mirror of
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Switch to Go11Modules
This commit is contained in:
parent
a9ab8591d7
commit
141b769fed
21
go.mod
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21
go.mod
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module github.com/prologic/bitraft
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require (
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github.com/armon/go-metrics v0.0.0-20170114134737-93f237eba9b0
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github.com/boltdb/bolt v0.0.0-20170131192018-e9cf4fae01b5
|
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github.com/garyburd/redigo v1.0.0
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github.com/golang/snappy v0.0.0-20170215233205-553a64147049
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github.com/hashicorp/go-msgpack v0.0.0-20150518234257-fa3f63826f7c
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||||
github.com/hashicorp/raft v0.0.0-20160824023112-5f09c4ffdbcd
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github.com/syndtr/goleveldb v0.0.0-20161227110519-23851d93a229
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github.com/tidwall/finn v0.1.0
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github.com/tidwall/match v0.0.0-20160830173930-173748da739a
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github.com/tidwall/raft-boltdb v0.0.0-20160909211738-25b87f2c5677
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github.com/tidwall/raft-fastlog v0.0.0-20160922202426-2f0d0a0ce558
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github.com/tidwall/raft-leveldb v0.0.0-20170127185243-ada471496dc9
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github.com/tidwall/raft-redcon v0.1.0
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github.com/tidwall/redcon v0.0.0-20170209173215-8b15dea700da
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github.com/tidwall/redlog v0.0.0-20170204190734-550629ebbfa9
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golang.org/x/crypto v0.0.0-20170209233901-453249f01cfe
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golang.org/x/sys v0.0.0-20170217003442-075e574b89e4
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)
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24
vendor/github.com/armon/go-metrics/.gitignore
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vendored
24
vendor/github.com/armon/go-metrics/.gitignore
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vendored
@ -1,24 +0,0 @@
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
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*.o
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*.a
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*.so
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|
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# Folders
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_obj
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_test
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# Architecture specific extensions/prefixes
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*.[568vq]
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[568vq].out
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|
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*.cgo1.go
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*.cgo2.c
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_cgo_defun.c
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_cgo_gotypes.go
|
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_cgo_export.*
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_testmain.go
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*.exe
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/metrics.out
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20
vendor/github.com/armon/go-metrics/LICENSE
generated
vendored
20
vendor/github.com/armon/go-metrics/LICENSE
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vendored
@ -1,20 +0,0 @@
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The MIT License (MIT)
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Copyright (c) 2013 Armon Dadgar
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|
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Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
this software and associated documentation files (the "Software"), to deal in
|
||||
the Software without restriction, including without limitation the rights to
|
||||
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
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|
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
74
vendor/github.com/armon/go-metrics/README.md
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74
vendor/github.com/armon/go-metrics/README.md
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@ -1,74 +0,0 @@
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go-metrics
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==========
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This library provides a `metrics` package which can be used to instrument code,
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expose application metrics, and profile runtime performance in a flexible manner.
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Current API: [![GoDoc](https://godoc.org/github.com/armon/go-metrics?status.svg)](https://godoc.org/github.com/armon/go-metrics)
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Sinks
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=====
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The `metrics` package makes use of a `MetricSink` interface to support delivery
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to any type of backend. Currently the following sinks are provided:
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* StatsiteSink : Sinks to a [statsite](https://github.com/armon/statsite/) instance (TCP)
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* StatsdSink: Sinks to a [StatsD](https://github.com/etsy/statsd/) / statsite instance (UDP)
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* PrometheusSink: Sinks to a [Prometheus](http://prometheus.io/) metrics endpoint (exposed via HTTP for scrapes)
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* InmemSink : Provides in-memory aggregation, can be used to export stats
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* FanoutSink : Sinks to multiple sinks. Enables writing to multiple statsite instances for example.
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* BlackholeSink : Sinks to nowhere
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In addition to the sinks, the `InmemSignal` can be used to catch a signal,
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and dump a formatted output of recent metrics. For example, when a process gets
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a SIGUSR1, it can dump to stderr recent performance metrics for debugging.
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Examples
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========
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Here is an example of using the package:
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```go
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func SlowMethod() {
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// Profiling the runtime of a method
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defer metrics.MeasureSince([]string{"SlowMethod"}, time.Now())
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}
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// Configure a statsite sink as the global metrics sink
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sink, _ := metrics.NewStatsiteSink("statsite:8125")
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metrics.NewGlobal(metrics.DefaultConfig("service-name"), sink)
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// Emit a Key/Value pair
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metrics.EmitKey([]string{"questions", "meaning of life"}, 42)
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```
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Here is an example of setting up a signal handler:
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```go
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// Setup the inmem sink and signal handler
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inm := metrics.NewInmemSink(10*time.Second, time.Minute)
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sig := metrics.DefaultInmemSignal(inm)
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metrics.NewGlobal(metrics.DefaultConfig("service-name"), inm)
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// Run some code
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inm.SetGauge([]string{"foo"}, 42)
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inm.EmitKey([]string{"bar"}, 30)
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inm.IncrCounter([]string{"baz"}, 42)
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inm.IncrCounter([]string{"baz"}, 1)
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inm.IncrCounter([]string{"baz"}, 80)
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inm.AddSample([]string{"method", "wow"}, 42)
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inm.AddSample([]string{"method", "wow"}, 100)
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inm.AddSample([]string{"method", "wow"}, 22)
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....
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```
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When a signal comes in, output like the following will be dumped to stderr:
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[2014-01-28 14:57:33.04 -0800 PST][G] 'foo': 42.000
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[2014-01-28 14:57:33.04 -0800 PST][P] 'bar': 30.000
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[2014-01-28 14:57:33.04 -0800 PST][C] 'baz': Count: 3 Min: 1.000 Mean: 41.000 Max: 80.000 Stddev: 39.509
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[2014-01-28 14:57:33.04 -0800 PST][S] 'method.wow': Count: 3 Min: 22.000 Mean: 54.667 Max: 100.000 Stddev: 40.513
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|
92
vendor/github.com/armon/go-metrics/circonus/circonus.go
generated
vendored
92
vendor/github.com/armon/go-metrics/circonus/circonus.go
generated
vendored
@ -1,92 +0,0 @@
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// Circonus Metrics Sink
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package circonus
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import (
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"strings"
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cgm "github.com/circonus-labs/circonus-gometrics"
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)
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// CirconusSink provides an interface to forward metrics to Circonus with
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// automatic check creation and metric management
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type CirconusSink struct {
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metrics *cgm.CirconusMetrics
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}
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|
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// Config options for CirconusSink
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// See https://github.com/circonus-labs/circonus-gometrics for configuration options
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type Config cgm.Config
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|
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// NewCirconusSink - create new metric sink for circonus
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//
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// one of the following must be supplied:
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// - API Token - search for an existing check or create a new check
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// - API Token + Check Id - the check identified by check id will be used
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// - API Token + Check Submission URL - the check identified by the submission url will be used
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// - Check Submission URL - the check identified by the submission url will be used
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// metric management will be *disabled*
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//
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// Note: If submission url is supplied w/o an api token, the public circonus ca cert will be used
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||||
// to verify the broker for metrics submission.
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func NewCirconusSink(cc *Config) (*CirconusSink, error) {
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cfg := cgm.Config{}
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if cc != nil {
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||||
cfg = cgm.Config(*cc)
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||||
}
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||||
|
||||
metrics, err := cgm.NewCirconusMetrics(&cfg)
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if err != nil {
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||||
return nil, err
|
||||
}
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|
||||
return &CirconusSink{
|
||||
metrics: metrics,
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}, nil
|
||||
}
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||||
|
||||
// Start submitting metrics to Circonus (flush every SubmitInterval)
|
||||
func (s *CirconusSink) Start() {
|
||||
s.metrics.Start()
|
||||
}
|
||||
|
||||
// Flush manually triggers metric submission to Circonus
|
||||
func (s *CirconusSink) Flush() {
|
||||
s.metrics.Flush()
|
||||
}
|
||||
|
||||
// SetGauge sets value for a gauge metric
|
||||
func (s *CirconusSink) SetGauge(key []string, val float32) {
|
||||
flatKey := s.flattenKey(key)
|
||||
s.metrics.SetGauge(flatKey, int64(val))
|
||||
}
|
||||
|
||||
// EmitKey is not implemented in circonus
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||||
func (s *CirconusSink) EmitKey(key []string, val float32) {
|
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// NOP
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||||
}
|
||||
|
||||
// IncrCounter increments a counter metric
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func (s *CirconusSink) IncrCounter(key []string, val float32) {
|
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flatKey := s.flattenKey(key)
|
||||
s.metrics.IncrementByValue(flatKey, uint64(val))
|
||||
}
|
||||
|
||||
// AddSample adds a sample to a histogram metric
|
||||
func (s *CirconusSink) AddSample(key []string, val float32) {
|
||||
flatKey := s.flattenKey(key)
|
||||
s.metrics.RecordValue(flatKey, float64(val))
|
||||
}
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||||
|
||||
// Flattens key to Circonus metric name
|
||||
func (s *CirconusSink) flattenKey(parts []string) string {
|
||||
joined := strings.Join(parts, "`")
|
||||
return strings.Map(func(r rune) rune {
|
||||
switch r {
|
||||
case ' ':
|
||||
return '_'
|
||||
default:
|
||||
return r
|
||||
}
|
||||
}, joined)
|
||||
}
|
153
vendor/github.com/armon/go-metrics/circonus/circonus_test.go
generated
vendored
153
vendor/github.com/armon/go-metrics/circonus/circonus_test.go
generated
vendored
@ -1,153 +0,0 @@
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package circonus
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"net/http"
|
||||
"net/http/httptest"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestNewCirconusSink(t *testing.T) {
|
||||
|
||||
// test with invalid config (nil)
|
||||
expectedError := errors.New("Invalid check manager configuration (no API token AND no submission url).")
|
||||
_, err := NewCirconusSink(nil)
|
||||
if err == nil || err.Error() != expectedError.Error() {
|
||||
t.Errorf("Expected an '%#v' error, got '%#v'", expectedError, err)
|
||||
}
|
||||
|
||||
// test w/submission url and w/o token
|
||||
cfg := &Config{}
|
||||
cfg.CheckManager.Check.SubmissionURL = "http://127.0.0.1:43191/"
|
||||
_, err = NewCirconusSink(cfg)
|
||||
if err != nil {
|
||||
t.Errorf("Expected no error, got '%v'", err)
|
||||
}
|
||||
|
||||
// note: a test with a valid token is *not* done as it *will* create a
|
||||
// check resulting in testing the api more than the circonus sink
|
||||
// see circonus-gometrics/checkmgr/checkmgr_test.go for testing of api token
|
||||
}
|
||||
|
||||
func TestFlattenKey(t *testing.T) {
|
||||
var testKeys = []struct {
|
||||
input []string
|
||||
expected string
|
||||
}{
|
||||
{[]string{"a", "b", "c"}, "a`b`c"},
|
||||
{[]string{"a-a", "b_b", "c/c"}, "a-a`b_b`c/c"},
|
||||
{[]string{"spaces must", "flatten", "to", "underscores"}, "spaces_must`flatten`to`underscores"},
|
||||
}
|
||||
|
||||
c := &CirconusSink{}
|
||||
|
||||
for _, test := range testKeys {
|
||||
if actual := c.flattenKey(test.input); actual != test.expected {
|
||||
t.Fatalf("Flattening %v failed, expected '%s' got '%s'", test.input, test.expected, actual)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func fakeBroker(q chan string) *httptest.Server {
|
||||
handler := func(w http.ResponseWriter, r *http.Request) {
|
||||
w.WriteHeader(200)
|
||||
w.Header().Set("Content-Type", "application/json")
|
||||
defer r.Body.Close()
|
||||
body, err := ioutil.ReadAll(r.Body)
|
||||
if err != nil {
|
||||
q <- err.Error()
|
||||
fmt.Fprintln(w, err.Error())
|
||||
} else {
|
||||
q <- string(body)
|
||||
fmt.Fprintln(w, `{"stats":1}`)
|
||||
}
|
||||
}
|
||||
|
||||
return httptest.NewServer(http.HandlerFunc(handler))
|
||||
}
|
||||
|
||||
func TestSetGauge(t *testing.T) {
|
||||
q := make(chan string)
|
||||
|
||||
server := fakeBroker(q)
|
||||
defer server.Close()
|
||||
|
||||
cfg := &Config{}
|
||||
cfg.CheckManager.Check.SubmissionURL = server.URL
|
||||
|
||||
cs, err := NewCirconusSink(cfg)
|
||||
if err != nil {
|
||||
t.Errorf("Expected no error, got '%v'", err)
|
||||
}
|
||||
|
||||
go func() {
|
||||
cs.SetGauge([]string{"foo", "bar"}, 1)
|
||||
cs.Flush()
|
||||
}()
|
||||
|
||||
expect := "{\"foo`bar\":{\"_type\":\"n\",\"_value\":1}}"
|
||||
actual := <-q
|
||||
|
||||
if actual != expect {
|
||||
t.Errorf("Expected '%s', got '%s'", expect, actual)
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
func TestIncrCounter(t *testing.T) {
|
||||
q := make(chan string)
|
||||
|
||||
server := fakeBroker(q)
|
||||
defer server.Close()
|
||||
|
||||
cfg := &Config{}
|
||||
cfg.CheckManager.Check.SubmissionURL = server.URL
|
||||
|
||||
cs, err := NewCirconusSink(cfg)
|
||||
if err != nil {
|
||||
t.Errorf("Expected no error, got '%v'", err)
|
||||
}
|
||||
|
||||
go func() {
|
||||
cs.IncrCounter([]string{"foo", "bar"}, 1)
|
||||
cs.Flush()
|
||||
}()
|
||||
|
||||
expect := "{\"foo`bar\":{\"_type\":\"n\",\"_value\":1}}"
|
||||
actual := <-q
|
||||
|
||||
if actual != expect {
|
||||
t.Errorf("Expected '%s', got '%s'", expect, actual)
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
func TestAddSample(t *testing.T) {
|
||||
q := make(chan string)
|
||||
|
||||
server := fakeBroker(q)
|
||||
defer server.Close()
|
||||
|
||||
cfg := &Config{}
|
||||
cfg.CheckManager.Check.SubmissionURL = server.URL
|
||||
|
||||
cs, err := NewCirconusSink(cfg)
|
||||
if err != nil {
|
||||
t.Errorf("Expected no error, got '%v'", err)
|
||||
}
|
||||
|
||||
go func() {
|
||||
cs.AddSample([]string{"foo", "bar"}, 1)
|
||||
cs.Flush()
|
||||
}()
|
||||
|
||||
expect := "{\"foo`bar\":{\"_type\":\"n\",\"_value\":[\"H[1.0e+00]=1\"]}}"
|
||||
actual := <-q
|
||||
|
||||
if actual != expect {
|
||||
t.Errorf("Expected '%s', got '%s'", expect, actual)
|
||||
|
||||
}
|
||||
}
|
12
vendor/github.com/armon/go-metrics/const_unix.go
generated
vendored
12
vendor/github.com/armon/go-metrics/const_unix.go
generated
vendored
@ -1,12 +0,0 @@
|
||||
// +build !windows
|
||||
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"syscall"
|
||||
)
|
||||
|
||||
const (
|
||||
// DefaultSignal is used with DefaultInmemSignal
|
||||
DefaultSignal = syscall.SIGUSR1
|
||||
)
|
13
vendor/github.com/armon/go-metrics/const_windows.go
generated
vendored
13
vendor/github.com/armon/go-metrics/const_windows.go
generated
vendored
@ -1,13 +0,0 @@
|
||||
// +build windows
|
||||
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"syscall"
|
||||
)
|
||||
|
||||
const (
|
||||
// DefaultSignal is used with DefaultInmemSignal
|
||||
// Windows has no SIGUSR1, use SIGBREAK
|
||||
DefaultSignal = syscall.Signal(21)
|
||||
)
|
125
vendor/github.com/armon/go-metrics/datadog/dogstatsd.go
generated
vendored
125
vendor/github.com/armon/go-metrics/datadog/dogstatsd.go
generated
vendored
@ -1,125 +0,0 @@
|
||||
package datadog
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strings"
|
||||
|
||||
"github.com/DataDog/datadog-go/statsd"
|
||||
)
|
||||
|
||||
// DogStatsdSink provides a MetricSink that can be used
|
||||
// with a dogstatsd server. It utilizes the Dogstatsd client at github.com/DataDog/datadog-go/statsd
|
||||
type DogStatsdSink struct {
|
||||
client *statsd.Client
|
||||
hostName string
|
||||
propagateHostname bool
|
||||
}
|
||||
|
||||
// NewDogStatsdSink is used to create a new DogStatsdSink with sane defaults
|
||||
func NewDogStatsdSink(addr string, hostName string) (*DogStatsdSink, error) {
|
||||
client, err := statsd.New(addr)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
sink := &DogStatsdSink{
|
||||
client: client,
|
||||
hostName: hostName,
|
||||
propagateHostname: false,
|
||||
}
|
||||
return sink, nil
|
||||
}
|
||||
|
||||
// SetTags sets common tags on the Dogstatsd Client that will be sent
|
||||
// along with all dogstatsd packets.
|
||||
// Ref: http://docs.datadoghq.com/guides/dogstatsd/#tags
|
||||
func (s *DogStatsdSink) SetTags(tags []string) {
|
||||
s.client.Tags = tags
|
||||
}
|
||||
|
||||
// EnableHostnamePropagation forces a Dogstatsd `host` tag with the value specified by `s.HostName`
|
||||
// Since the go-metrics package has its own mechanism for attaching a hostname to metrics,
|
||||
// setting the `propagateHostname` flag ensures that `s.HostName` overrides the host tag naively set by the DogStatsd server
|
||||
func (s *DogStatsdSink) EnableHostNamePropagation() {
|
||||
s.propagateHostname = true
|
||||
}
|
||||
|
||||
func (s *DogStatsdSink) flattenKey(parts []string) string {
|
||||
joined := strings.Join(parts, ".")
|
||||
return strings.Map(func(r rune) rune {
|
||||
switch r {
|
||||
case ':':
|
||||
fallthrough
|
||||
case ' ':
|
||||
return '_'
|
||||
default:
|
||||
return r
|
||||
}
|
||||
}, joined)
|
||||
}
|
||||
|
||||
func (s *DogStatsdSink) parseKey(key []string) ([]string, []string) {
|
||||
// Since DogStatsd supports dimensionality via tags on metric keys, this sink's approach is to splice the hostname out of the key in favor of a `host` tag
|
||||
// The `host` tag is either forced here, or set downstream by the DogStatsd server
|
||||
|
||||
var tags []string
|
||||
hostName := s.hostName
|
||||
|
||||
//Splice the hostname out of the key
|
||||
for i, el := range key {
|
||||
if el == hostName {
|
||||
key = append(key[:i], key[i+1:]...)
|
||||
}
|
||||
}
|
||||
|
||||
if s.propagateHostname {
|
||||
tags = append(tags, fmt.Sprintf("host:%s", hostName))
|
||||
}
|
||||
return key, tags
|
||||
}
|
||||
|
||||
// Implementation of methods in the MetricSink interface
|
||||
|
||||
func (s *DogStatsdSink) SetGauge(key []string, val float32) {
|
||||
s.SetGaugeWithTags(key, val, []string{})
|
||||
}
|
||||
|
||||
func (s *DogStatsdSink) IncrCounter(key []string, val float32) {
|
||||
s.IncrCounterWithTags(key, val, []string{})
|
||||
}
|
||||
|
||||
// EmitKey is not implemented since DogStatsd does not provide a metric type that holds an
|
||||
// arbitrary number of values
|
||||
func (s *DogStatsdSink) EmitKey(key []string, val float32) {
|
||||
}
|
||||
|
||||
func (s *DogStatsdSink) AddSample(key []string, val float32) {
|
||||
s.AddSampleWithTags(key, val, []string{})
|
||||
}
|
||||
|
||||
// The following ...WithTags methods correspond to Datadog's Tag extension to Statsd.
|
||||
// http://docs.datadoghq.com/guides/dogstatsd/#tags
|
||||
|
||||
func (s *DogStatsdSink) SetGaugeWithTags(key []string, val float32, tags []string) {
|
||||
flatKey, tags := s.getFlatkeyAndCombinedTags(key, tags)
|
||||
rate := 1.0
|
||||
s.client.Gauge(flatKey, float64(val), tags, rate)
|
||||
}
|
||||
|
||||
func (s *DogStatsdSink) IncrCounterWithTags(key []string, val float32, tags []string) {
|
||||
flatKey, tags := s.getFlatkeyAndCombinedTags(key, tags)
|
||||
rate := 1.0
|
||||
s.client.Count(flatKey, int64(val), tags, rate)
|
||||
}
|
||||
|
||||
func (s *DogStatsdSink) AddSampleWithTags(key []string, val float32, tags []string) {
|
||||
flatKey, tags := s.getFlatkeyAndCombinedTags(key, tags)
|
||||
rate := 1.0
|
||||
s.client.TimeInMilliseconds(flatKey, float64(val), tags, rate)
|
||||
}
|
||||
|
||||
func (s *DogStatsdSink) getFlatkeyAndCombinedTags(key []string, tags []string) (flattenedKey string, combinedTags []string) {
|
||||
key, hostTags := s.parseKey(key)
|
||||
flatKey := s.flattenKey(key)
|
||||
tags = append(tags, hostTags...)
|
||||
return flatKey, tags
|
||||
}
|
147
vendor/github.com/armon/go-metrics/datadog/dogstatsd_test.go
generated
vendored
147
vendor/github.com/armon/go-metrics/datadog/dogstatsd_test.go
generated
vendored
@ -1,147 +0,0 @@
|
||||
package datadog
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"net"
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
var EmptyTags []string
|
||||
|
||||
const (
|
||||
DogStatsdAddr = "127.0.0.1:7254"
|
||||
HostnameEnabled = true
|
||||
HostnameDisabled = false
|
||||
TestHostname = "test_hostname"
|
||||
)
|
||||
|
||||
func MockGetHostname() string {
|
||||
return TestHostname
|
||||
}
|
||||
|
||||
var ParseKeyTests = []struct {
|
||||
KeyToParse []string
|
||||
Tags []string
|
||||
PropagateHostname bool
|
||||
ExpectedKey []string
|
||||
ExpectedTags []string
|
||||
}{
|
||||
{[]string{"a", MockGetHostname(), "b", "c"}, EmptyTags, HostnameDisabled, []string{"a", "b", "c"}, EmptyTags},
|
||||
{[]string{"a", "b", "c"}, EmptyTags, HostnameDisabled, []string{"a", "b", "c"}, EmptyTags},
|
||||
{[]string{"a", "b", "c"}, EmptyTags, HostnameEnabled, []string{"a", "b", "c"}, []string{fmt.Sprintf("host:%s", MockGetHostname())}},
|
||||
}
|
||||
|
||||
var FlattenKeyTests = []struct {
|
||||
KeyToFlatten []string
|
||||
Expected string
|
||||
}{
|
||||
{[]string{"a", "b", "c"}, "a.b.c"},
|
||||
{[]string{"spaces must", "flatten", "to", "underscores"}, "spaces_must.flatten.to.underscores"},
|
||||
}
|
||||
|
||||
var MetricSinkTests = []struct {
|
||||
Method string
|
||||
Metric []string
|
||||
Value interface{}
|
||||
Tags []string
|
||||
PropagateHostname bool
|
||||
Expected string
|
||||
}{
|
||||
{"SetGauge", []string{"foo", "bar"}, float32(42), EmptyTags, HostnameDisabled, "foo.bar:42.000000|g"},
|
||||
{"SetGauge", []string{"foo", "bar", "baz"}, float32(42), EmptyTags, HostnameDisabled, "foo.bar.baz:42.000000|g"},
|
||||
{"AddSample", []string{"sample", "thing"}, float32(4), EmptyTags, HostnameDisabled, "sample.thing:4.000000|ms"},
|
||||
{"IncrCounter", []string{"count", "me"}, float32(3), EmptyTags, HostnameDisabled, "count.me:3|c"},
|
||||
|
||||
{"SetGauge", []string{"foo", "baz"}, float32(42), []string{"my_tag:my_value"}, HostnameDisabled, "foo.baz:42.000000|g|#my_tag:my_value"},
|
||||
{"SetGauge", []string{"foo", "bar"}, float32(42), []string{"my_tag:my_value", "other_tag:other_value"}, HostnameDisabled, "foo.bar:42.000000|g|#my_tag:my_value,other_tag:other_value"},
|
||||
{"SetGauge", []string{"foo", "bar"}, float32(42), []string{"my_tag:my_value", "other_tag:other_value"}, HostnameEnabled, "foo.bar:42.000000|g|#my_tag:my_value,other_tag:other_value,host:test_hostname"},
|
||||
}
|
||||
|
||||
func mockNewDogStatsdSink(addr string, tags []string, tagWithHostname bool) *DogStatsdSink {
|
||||
dog, _ := NewDogStatsdSink(addr, MockGetHostname())
|
||||
dog.SetTags(tags)
|
||||
if tagWithHostname {
|
||||
dog.EnableHostNamePropagation()
|
||||
}
|
||||
|
||||
return dog
|
||||
}
|
||||
|
||||
func setupTestServerAndBuffer(t *testing.T) (*net.UDPConn, []byte) {
|
||||
udpAddr, err := net.ResolveUDPAddr("udp", DogStatsdAddr)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
server, err := net.ListenUDP("udp", udpAddr)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return server, make([]byte, 1024)
|
||||
}
|
||||
|
||||
func TestParseKey(t *testing.T) {
|
||||
for _, tt := range ParseKeyTests {
|
||||
dog := mockNewDogStatsdSink(DogStatsdAddr, tt.Tags, tt.PropagateHostname)
|
||||
key, tags := dog.parseKey(tt.KeyToParse)
|
||||
|
||||
if !reflect.DeepEqual(key, tt.ExpectedKey) {
|
||||
t.Fatalf("Key Parsing failed for %v", tt.KeyToParse)
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(tags, tt.ExpectedTags) {
|
||||
t.Fatalf("Tag Parsing Failed for %v", tt.KeyToParse)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestFlattenKey(t *testing.T) {
|
||||
dog := mockNewDogStatsdSink(DogStatsdAddr, EmptyTags, HostnameDisabled)
|
||||
for _, tt := range FlattenKeyTests {
|
||||
if !reflect.DeepEqual(dog.flattenKey(tt.KeyToFlatten), tt.Expected) {
|
||||
t.Fatalf("Flattening %v failed", tt.KeyToFlatten)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetricSink(t *testing.T) {
|
||||
server, buf := setupTestServerAndBuffer(t)
|
||||
defer server.Close()
|
||||
|
||||
for _, tt := range MetricSinkTests {
|
||||
dog := mockNewDogStatsdSink(DogStatsdAddr, tt.Tags, tt.PropagateHostname)
|
||||
method := reflect.ValueOf(dog).MethodByName(tt.Method)
|
||||
method.Call([]reflect.Value{
|
||||
reflect.ValueOf(tt.Metric),
|
||||
reflect.ValueOf(tt.Value)})
|
||||
assertServerMatchesExpected(t, server, buf, tt.Expected)
|
||||
}
|
||||
}
|
||||
|
||||
func TestTaggableMetrics(t *testing.T) {
|
||||
server, buf := setupTestServerAndBuffer(t)
|
||||
defer server.Close()
|
||||
|
||||
dog := mockNewDogStatsdSink(DogStatsdAddr, EmptyTags, HostnameDisabled)
|
||||
|
||||
dog.AddSampleWithTags([]string{"sample", "thing"}, float32(4), []string{"tagkey:tagvalue"})
|
||||
assertServerMatchesExpected(t, server, buf, "sample.thing:4.000000|ms|#tagkey:tagvalue")
|
||||
|
||||
dog.SetGaugeWithTags([]string{"sample", "thing"}, float32(4), []string{"tagkey:tagvalue"})
|
||||
assertServerMatchesExpected(t, server, buf, "sample.thing:4.000000|g|#tagkey:tagvalue")
|
||||
|
||||
dog.IncrCounterWithTags([]string{"sample", "thing"}, float32(4), []string{"tagkey:tagvalue"})
|
||||
assertServerMatchesExpected(t, server, buf, "sample.thing:4|c|#tagkey:tagvalue")
|
||||
|
||||
dog = mockNewDogStatsdSink(DogStatsdAddr, []string{"global"}, HostnameEnabled) // with hostname, global tags
|
||||
dog.IncrCounterWithTags([]string{"sample", "thing"}, float32(4), []string{"tagkey:tagvalue"})
|
||||
assertServerMatchesExpected(t, server, buf, "sample.thing:4|c|#global,tagkey:tagvalue,host:test_hostname")
|
||||
}
|
||||
|
||||
func assertServerMatchesExpected(t *testing.T, server *net.UDPConn, buf []byte, expected string) {
|
||||
n, _ := server.Read(buf)
|
||||
msg := buf[:n]
|
||||
if string(msg) != expected {
|
||||
t.Fatalf("Line %s does not match expected: %s", string(msg), expected)
|
||||
}
|
||||
}
|
247
vendor/github.com/armon/go-metrics/inmem.go
generated
vendored
247
vendor/github.com/armon/go-metrics/inmem.go
generated
vendored
@ -1,247 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"math"
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
)
|
||||
|
||||
// InmemSink provides a MetricSink that does in-memory aggregation
|
||||
// without sending metrics over a network. It can be embedded within
|
||||
// an application to provide profiling information.
|
||||
type InmemSink struct {
|
||||
// How long is each aggregation interval
|
||||
interval time.Duration
|
||||
|
||||
// Retain controls how many metrics interval we keep
|
||||
retain time.Duration
|
||||
|
||||
// maxIntervals is the maximum length of intervals.
|
||||
// It is retain / interval.
|
||||
maxIntervals int
|
||||
|
||||
// intervals is a slice of the retained intervals
|
||||
intervals []*IntervalMetrics
|
||||
intervalLock sync.RWMutex
|
||||
|
||||
rateDenom float64
|
||||
}
|
||||
|
||||
// IntervalMetrics stores the aggregated metrics
|
||||
// for a specific interval
|
||||
type IntervalMetrics struct {
|
||||
sync.RWMutex
|
||||
|
||||
// The start time of the interval
|
||||
Interval time.Time
|
||||
|
||||
// Gauges maps the key to the last set value
|
||||
Gauges map[string]float32
|
||||
|
||||
// Points maps the string to the list of emitted values
|
||||
// from EmitKey
|
||||
Points map[string][]float32
|
||||
|
||||
// Counters maps the string key to a sum of the counter
|
||||
// values
|
||||
Counters map[string]*AggregateSample
|
||||
|
||||
// Samples maps the key to an AggregateSample,
|
||||
// which has the rolled up view of a sample
|
||||
Samples map[string]*AggregateSample
|
||||
}
|
||||
|
||||
// NewIntervalMetrics creates a new IntervalMetrics for a given interval
|
||||
func NewIntervalMetrics(intv time.Time) *IntervalMetrics {
|
||||
return &IntervalMetrics{
|
||||
Interval: intv,
|
||||
Gauges: make(map[string]float32),
|
||||
Points: make(map[string][]float32),
|
||||
Counters: make(map[string]*AggregateSample),
|
||||
Samples: make(map[string]*AggregateSample),
|
||||
}
|
||||
}
|
||||
|
||||
// AggregateSample is used to hold aggregate metrics
|
||||
// about a sample
|
||||
type AggregateSample struct {
|
||||
Count int // The count of emitted pairs
|
||||
Rate float64 // The count of emitted pairs per time unit (usually 1 second)
|
||||
Sum float64 // The sum of values
|
||||
SumSq float64 // The sum of squared values
|
||||
Min float64 // Minimum value
|
||||
Max float64 // Maximum value
|
||||
LastUpdated time.Time // When value was last updated
|
||||
}
|
||||
|
||||
// Computes a Stddev of the values
|
||||
func (a *AggregateSample) Stddev() float64 {
|
||||
num := (float64(a.Count) * a.SumSq) - math.Pow(a.Sum, 2)
|
||||
div := float64(a.Count * (a.Count - 1))
|
||||
if div == 0 {
|
||||
return 0
|
||||
}
|
||||
return math.Sqrt(num / div)
|
||||
}
|
||||
|
||||
// Computes a mean of the values
|
||||
func (a *AggregateSample) Mean() float64 {
|
||||
if a.Count == 0 {
|
||||
return 0
|
||||
}
|
||||
return a.Sum / float64(a.Count)
|
||||
}
|
||||
|
||||
// Ingest is used to update a sample
|
||||
func (a *AggregateSample) Ingest(v float64, rateDenom float64) {
|
||||
a.Count++
|
||||
a.Sum += v
|
||||
a.SumSq += (v * v)
|
||||
if v < a.Min || a.Count == 1 {
|
||||
a.Min = v
|
||||
}
|
||||
if v > a.Max || a.Count == 1 {
|
||||
a.Max = v
|
||||
}
|
||||
a.Rate = float64(a.Count)/rateDenom
|
||||
a.LastUpdated = time.Now()
|
||||
}
|
||||
|
||||
func (a *AggregateSample) String() string {
|
||||
if a.Count == 0 {
|
||||
return "Count: 0"
|
||||
} else if a.Stddev() == 0 {
|
||||
return fmt.Sprintf("Count: %d Sum: %0.3f LastUpdated: %s", a.Count, a.Sum, a.LastUpdated)
|
||||
} else {
|
||||
return fmt.Sprintf("Count: %d Min: %0.3f Mean: %0.3f Max: %0.3f Stddev: %0.3f Sum: %0.3f LastUpdated: %s",
|
||||
a.Count, a.Min, a.Mean(), a.Max, a.Stddev(), a.Sum, a.LastUpdated)
|
||||
}
|
||||
}
|
||||
|
||||
// NewInmemSink is used to construct a new in-memory sink.
|
||||
// Uses an aggregation interval and maximum retention period.
|
||||
func NewInmemSink(interval, retain time.Duration) *InmemSink {
|
||||
rateTimeUnit := time.Second
|
||||
i := &InmemSink{
|
||||
interval: interval,
|
||||
retain: retain,
|
||||
maxIntervals: int(retain / interval),
|
||||
rateDenom: float64(interval.Nanoseconds()) / float64(rateTimeUnit.Nanoseconds()),
|
||||
}
|
||||
i.intervals = make([]*IntervalMetrics, 0, i.maxIntervals)
|
||||
return i
|
||||
}
|
||||
|
||||
func (i *InmemSink) SetGauge(key []string, val float32) {
|
||||
k := i.flattenKey(key)
|
||||
intv := i.getInterval()
|
||||
|
||||
intv.Lock()
|
||||
defer intv.Unlock()
|
||||
intv.Gauges[k] = val
|
||||
}
|
||||
|
||||
func (i *InmemSink) EmitKey(key []string, val float32) {
|
||||
k := i.flattenKey(key)
|
||||
intv := i.getInterval()
|
||||
|
||||
intv.Lock()
|
||||
defer intv.Unlock()
|
||||
vals := intv.Points[k]
|
||||
intv.Points[k] = append(vals, val)
|
||||
}
|
||||
|
||||
func (i *InmemSink) IncrCounter(key []string, val float32) {
|
||||
k := i.flattenKey(key)
|
||||
intv := i.getInterval()
|
||||
|
||||
intv.Lock()
|
||||
defer intv.Unlock()
|
||||
|
||||
agg := intv.Counters[k]
|
||||
if agg == nil {
|
||||
agg = &AggregateSample{}
|
||||
intv.Counters[k] = agg
|
||||
}
|
||||
agg.Ingest(float64(val), i.rateDenom)
|
||||
}
|
||||
|
||||
func (i *InmemSink) AddSample(key []string, val float32) {
|
||||
k := i.flattenKey(key)
|
||||
intv := i.getInterval()
|
||||
|
||||
intv.Lock()
|
||||
defer intv.Unlock()
|
||||
|
||||
agg := intv.Samples[k]
|
||||
if agg == nil {
|
||||
agg = &AggregateSample{}
|
||||
intv.Samples[k] = agg
|
||||
}
|
||||
agg.Ingest(float64(val), i.rateDenom)
|
||||
}
|
||||
|
||||
// Data is used to retrieve all the aggregated metrics
|
||||
// Intervals may be in use, and a read lock should be acquired
|
||||
func (i *InmemSink) Data() []*IntervalMetrics {
|
||||
// Get the current interval, forces creation
|
||||
i.getInterval()
|
||||
|
||||
i.intervalLock.RLock()
|
||||
defer i.intervalLock.RUnlock()
|
||||
|
||||
intervals := make([]*IntervalMetrics, len(i.intervals))
|
||||
copy(intervals, i.intervals)
|
||||
return intervals
|
||||
}
|
||||
|
||||
func (i *InmemSink) getExistingInterval(intv time.Time) *IntervalMetrics {
|
||||
i.intervalLock.RLock()
|
||||
defer i.intervalLock.RUnlock()
|
||||
|
||||
n := len(i.intervals)
|
||||
if n > 0 && i.intervals[n-1].Interval == intv {
|
||||
return i.intervals[n-1]
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (i *InmemSink) createInterval(intv time.Time) *IntervalMetrics {
|
||||
i.intervalLock.Lock()
|
||||
defer i.intervalLock.Unlock()
|
||||
|
||||
// Check for an existing interval
|
||||
n := len(i.intervals)
|
||||
if n > 0 && i.intervals[n-1].Interval == intv {
|
||||
return i.intervals[n-1]
|
||||
}
|
||||
|
||||
// Add the current interval
|
||||
current := NewIntervalMetrics(intv)
|
||||
i.intervals = append(i.intervals, current)
|
||||
n++
|
||||
|
||||
// Truncate the intervals if they are too long
|
||||
if n >= i.maxIntervals {
|
||||
copy(i.intervals[0:], i.intervals[n-i.maxIntervals:])
|
||||
i.intervals = i.intervals[:i.maxIntervals]
|
||||
}
|
||||
return current
|
||||
}
|
||||
|
||||
// getInterval returns the current interval to write to
|
||||
func (i *InmemSink) getInterval() *IntervalMetrics {
|
||||
intv := time.Now().Truncate(i.interval)
|
||||
if m := i.getExistingInterval(intv); m != nil {
|
||||
return m
|
||||
}
|
||||
return i.createInterval(intv)
|
||||
}
|
||||
|
||||
// Flattens the key for formatting, removes spaces
|
||||
func (i *InmemSink) flattenKey(parts []string) string {
|
||||
joined := strings.Join(parts, ".")
|
||||
return strings.Replace(joined, " ", "_", -1)
|
||||
}
|
100
vendor/github.com/armon/go-metrics/inmem_signal.go
generated
vendored
100
vendor/github.com/armon/go-metrics/inmem_signal.go
generated
vendored
@ -1,100 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"os/signal"
|
||||
"sync"
|
||||
"syscall"
|
||||
)
|
||||
|
||||
// InmemSignal is used to listen for a given signal, and when received,
|
||||
// to dump the current metrics from the InmemSink to an io.Writer
|
||||
type InmemSignal struct {
|
||||
signal syscall.Signal
|
||||
inm *InmemSink
|
||||
w io.Writer
|
||||
sigCh chan os.Signal
|
||||
|
||||
stop bool
|
||||
stopCh chan struct{}
|
||||
stopLock sync.Mutex
|
||||
}
|
||||
|
||||
// NewInmemSignal creates a new InmemSignal which listens for a given signal,
|
||||
// and dumps the current metrics out to a writer
|
||||
func NewInmemSignal(inmem *InmemSink, sig syscall.Signal, w io.Writer) *InmemSignal {
|
||||
i := &InmemSignal{
|
||||
signal: sig,
|
||||
inm: inmem,
|
||||
w: w,
|
||||
sigCh: make(chan os.Signal, 1),
|
||||
stopCh: make(chan struct{}),
|
||||
}
|
||||
signal.Notify(i.sigCh, sig)
|
||||
go i.run()
|
||||
return i
|
||||
}
|
||||
|
||||
// DefaultInmemSignal returns a new InmemSignal that responds to SIGUSR1
|
||||
// and writes output to stderr. Windows uses SIGBREAK
|
||||
func DefaultInmemSignal(inmem *InmemSink) *InmemSignal {
|
||||
return NewInmemSignal(inmem, DefaultSignal, os.Stderr)
|
||||
}
|
||||
|
||||
// Stop is used to stop the InmemSignal from listening
|
||||
func (i *InmemSignal) Stop() {
|
||||
i.stopLock.Lock()
|
||||
defer i.stopLock.Unlock()
|
||||
|
||||
if i.stop {
|
||||
return
|
||||
}
|
||||
i.stop = true
|
||||
close(i.stopCh)
|
||||
signal.Stop(i.sigCh)
|
||||
}
|
||||
|
||||
// run is a long running routine that handles signals
|
||||
func (i *InmemSignal) run() {
|
||||
for {
|
||||
select {
|
||||
case <-i.sigCh:
|
||||
i.dumpStats()
|
||||
case <-i.stopCh:
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// dumpStats is used to dump the data to output writer
|
||||
func (i *InmemSignal) dumpStats() {
|
||||
buf := bytes.NewBuffer(nil)
|
||||
|
||||
data := i.inm.Data()
|
||||
// Skip the last period which is still being aggregated
|
||||
for i := 0; i < len(data)-1; i++ {
|
||||
intv := data[i]
|
||||
intv.RLock()
|
||||
for name, val := range intv.Gauges {
|
||||
fmt.Fprintf(buf, "[%v][G] '%s': %0.3f\n", intv.Interval, name, val)
|
||||
}
|
||||
for name, vals := range intv.Points {
|
||||
for _, val := range vals {
|
||||
fmt.Fprintf(buf, "[%v][P] '%s': %0.3f\n", intv.Interval, name, val)
|
||||
}
|
||||
}
|
||||
for name, agg := range intv.Counters {
|
||||
fmt.Fprintf(buf, "[%v][C] '%s': %s\n", intv.Interval, name, agg)
|
||||
}
|
||||
for name, agg := range intv.Samples {
|
||||
fmt.Fprintf(buf, "[%v][S] '%s': %s\n", intv.Interval, name, agg)
|
||||
}
|
||||
intv.RUnlock()
|
||||
}
|
||||
|
||||
// Write out the bytes
|
||||
i.w.Write(buf.Bytes())
|
||||
}
|
46
vendor/github.com/armon/go-metrics/inmem_signal_test.go
generated
vendored
46
vendor/github.com/armon/go-metrics/inmem_signal_test.go
generated
vendored
@ -1,46 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"os"
|
||||
"strings"
|
||||
"syscall"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
func TestInmemSignal(t *testing.T) {
|
||||
buf := bytes.NewBuffer(nil)
|
||||
inm := NewInmemSink(10*time.Millisecond, 50*time.Millisecond)
|
||||
sig := NewInmemSignal(inm, syscall.SIGUSR1, buf)
|
||||
defer sig.Stop()
|
||||
|
||||
inm.SetGauge([]string{"foo"}, 42)
|
||||
inm.EmitKey([]string{"bar"}, 42)
|
||||
inm.IncrCounter([]string{"baz"}, 42)
|
||||
inm.AddSample([]string{"wow"}, 42)
|
||||
|
||||
// Wait for period to end
|
||||
time.Sleep(15 * time.Millisecond)
|
||||
|
||||
// Send signal!
|
||||
syscall.Kill(os.Getpid(), syscall.SIGUSR1)
|
||||
|
||||
// Wait for flush
|
||||
time.Sleep(10 * time.Millisecond)
|
||||
|
||||
// Check the output
|
||||
out := string(buf.Bytes())
|
||||
if !strings.Contains(out, "[G] 'foo': 42") {
|
||||
t.Fatalf("bad: %v", out)
|
||||
}
|
||||
if !strings.Contains(out, "[P] 'bar': 42") {
|
||||
t.Fatalf("bad: %v", out)
|
||||
}
|
||||
if !strings.Contains(out, "[C] 'baz': Count: 1 Sum: 42") {
|
||||
t.Fatalf("bad: %v", out)
|
||||
}
|
||||
if !strings.Contains(out, "[S] 'wow': Count: 1 Sum: 42") {
|
||||
t.Fatalf("bad: %v", out)
|
||||
}
|
||||
}
|
107
vendor/github.com/armon/go-metrics/inmem_test.go
generated
vendored
107
vendor/github.com/armon/go-metrics/inmem_test.go
generated
vendored
@ -1,107 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"math"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
func TestInmemSink(t *testing.T) {
|
||||
inm := NewInmemSink(10*time.Millisecond, 50*time.Millisecond)
|
||||
|
||||
data := inm.Data()
|
||||
if len(data) != 1 {
|
||||
t.Fatalf("bad: %v", data)
|
||||
}
|
||||
|
||||
// Add data points
|
||||
inm.SetGauge([]string{"foo", "bar"}, 42)
|
||||
inm.EmitKey([]string{"foo", "bar"}, 42)
|
||||
inm.IncrCounter([]string{"foo", "bar"}, 20)
|
||||
inm.IncrCounter([]string{"foo", "bar"}, 22)
|
||||
inm.AddSample([]string{"foo", "bar"}, 20)
|
||||
inm.AddSample([]string{"foo", "bar"}, 22)
|
||||
|
||||
data = inm.Data()
|
||||
if len(data) != 1 {
|
||||
t.Fatalf("bad: %v", data)
|
||||
}
|
||||
|
||||
intvM := data[0]
|
||||
intvM.RLock()
|
||||
|
||||
if time.Now().Sub(intvM.Interval) > 10*time.Millisecond {
|
||||
t.Fatalf("interval too old")
|
||||
}
|
||||
if intvM.Gauges["foo.bar"] != 42 {
|
||||
t.Fatalf("bad val: %v", intvM.Gauges)
|
||||
}
|
||||
if intvM.Points["foo.bar"][0] != 42 {
|
||||
t.Fatalf("bad val: %v", intvM.Points)
|
||||
}
|
||||
|
||||
agg := intvM.Counters["foo.bar"]
|
||||
if agg.Count != 2 {
|
||||
t.Fatalf("bad val: %v", agg)
|
||||
}
|
||||
if agg.Rate != 200 {
|
||||
t.Fatalf("bad val: %v", agg.Rate)
|
||||
}
|
||||
if agg.Sum != 42 {
|
||||
t.Fatalf("bad val: %v", agg)
|
||||
}
|
||||
if agg.SumSq != 884 {
|
||||
t.Fatalf("bad val: %v", agg)
|
||||
}
|
||||
if agg.Min != 20 {
|
||||
t.Fatalf("bad val: %v", agg)
|
||||
}
|
||||
if agg.Max != 22 {
|
||||
t.Fatalf("bad val: %v", agg)
|
||||
}
|
||||
if agg.Mean() != 21 {
|
||||
t.Fatalf("bad val: %v", agg)
|
||||
}
|
||||
if agg.Stddev() != math.Sqrt(2) {
|
||||
t.Fatalf("bad val: %v", agg)
|
||||
}
|
||||
|
||||
if agg.LastUpdated.IsZero() {
|
||||
t.Fatalf("agg.LastUpdated is not set: %v", agg)
|
||||
}
|
||||
|
||||
diff := time.Now().Sub(agg.LastUpdated).Seconds()
|
||||
if diff > 1 {
|
||||
t.Fatalf("time diff too great: %f", diff)
|
||||
}
|
||||
|
||||
if agg = intvM.Samples["foo.bar"]; agg == nil {
|
||||
t.Fatalf("missing sample")
|
||||
}
|
||||
|
||||
intvM.RUnlock()
|
||||
|
||||
for i := 1; i < 10; i++ {
|
||||
time.Sleep(10 * time.Millisecond)
|
||||
inm.SetGauge([]string{"foo", "bar"}, 42)
|
||||
data = inm.Data()
|
||||
if len(data) != min(i+1, 5) {
|
||||
t.Fatalf("bad: %v", data)
|
||||
}
|
||||
}
|
||||
|
||||
// Should not exceed 5 intervals!
|
||||
time.Sleep(10 * time.Millisecond)
|
||||
inm.SetGauge([]string{"foo", "bar"}, 42)
|
||||
data = inm.Data()
|
||||
if len(data) != 5 {
|
||||
t.Fatalf("bad: %v", data)
|
||||
}
|
||||
}
|
||||
|
||||
func min(a, b int) int {
|
||||
if a < b {
|
||||
return a
|
||||
}
|
||||
return b
|
||||
}
|
115
vendor/github.com/armon/go-metrics/metrics.go
generated
vendored
115
vendor/github.com/armon/go-metrics/metrics.go
generated
vendored
@ -1,115 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"runtime"
|
||||
"time"
|
||||
)
|
||||
|
||||
func (m *Metrics) SetGauge(key []string, val float32) {
|
||||
if m.HostName != "" && m.EnableHostname {
|
||||
key = insert(0, m.HostName, key)
|
||||
}
|
||||
if m.EnableTypePrefix {
|
||||
key = insert(0, "gauge", key)
|
||||
}
|
||||
if m.ServiceName != "" {
|
||||
key = insert(0, m.ServiceName, key)
|
||||
}
|
||||
m.sink.SetGauge(key, val)
|
||||
}
|
||||
|
||||
func (m *Metrics) EmitKey(key []string, val float32) {
|
||||
if m.EnableTypePrefix {
|
||||
key = insert(0, "kv", key)
|
||||
}
|
||||
if m.ServiceName != "" {
|
||||
key = insert(0, m.ServiceName, key)
|
||||
}
|
||||
m.sink.EmitKey(key, val)
|
||||
}
|
||||
|
||||
func (m *Metrics) IncrCounter(key []string, val float32) {
|
||||
if m.EnableTypePrefix {
|
||||
key = insert(0, "counter", key)
|
||||
}
|
||||
if m.ServiceName != "" {
|
||||
key = insert(0, m.ServiceName, key)
|
||||
}
|
||||
m.sink.IncrCounter(key, val)
|
||||
}
|
||||
|
||||
func (m *Metrics) AddSample(key []string, val float32) {
|
||||
if m.EnableTypePrefix {
|
||||
key = insert(0, "sample", key)
|
||||
}
|
||||
if m.ServiceName != "" {
|
||||
key = insert(0, m.ServiceName, key)
|
||||
}
|
||||
m.sink.AddSample(key, val)
|
||||
}
|
||||
|
||||
func (m *Metrics) MeasureSince(key []string, start time.Time) {
|
||||
if m.EnableTypePrefix {
|
||||
key = insert(0, "timer", key)
|
||||
}
|
||||
if m.ServiceName != "" {
|
||||
key = insert(0, m.ServiceName, key)
|
||||
}
|
||||
now := time.Now()
|
||||
elapsed := now.Sub(start)
|
||||
msec := float32(elapsed.Nanoseconds()) / float32(m.TimerGranularity)
|
||||
m.sink.AddSample(key, msec)
|
||||
}
|
||||
|
||||
// Periodically collects runtime stats to publish
|
||||
func (m *Metrics) collectStats() {
|
||||
for {
|
||||
time.Sleep(m.ProfileInterval)
|
||||
m.emitRuntimeStats()
|
||||
}
|
||||
}
|
||||
|
||||
// Emits various runtime statsitics
|
||||
func (m *Metrics) emitRuntimeStats() {
|
||||
// Export number of Goroutines
|
||||
numRoutines := runtime.NumGoroutine()
|
||||
m.SetGauge([]string{"runtime", "num_goroutines"}, float32(numRoutines))
|
||||
|
||||
// Export memory stats
|
||||
var stats runtime.MemStats
|
||||
runtime.ReadMemStats(&stats)
|
||||
m.SetGauge([]string{"runtime", "alloc_bytes"}, float32(stats.Alloc))
|
||||
m.SetGauge([]string{"runtime", "sys_bytes"}, float32(stats.Sys))
|
||||
m.SetGauge([]string{"runtime", "malloc_count"}, float32(stats.Mallocs))
|
||||
m.SetGauge([]string{"runtime", "free_count"}, float32(stats.Frees))
|
||||
m.SetGauge([]string{"runtime", "heap_objects"}, float32(stats.HeapObjects))
|
||||
m.SetGauge([]string{"runtime", "total_gc_pause_ns"}, float32(stats.PauseTotalNs))
|
||||
m.SetGauge([]string{"runtime", "total_gc_runs"}, float32(stats.NumGC))
|
||||
|
||||
// Export info about the last few GC runs
|
||||
num := stats.NumGC
|
||||
|
||||
// Handle wrap around
|
||||
if num < m.lastNumGC {
|
||||
m.lastNumGC = 0
|
||||
}
|
||||
|
||||
// Ensure we don't scan more than 256
|
||||
if num-m.lastNumGC >= 256 {
|
||||
m.lastNumGC = num - 255
|
||||
}
|
||||
|
||||
for i := m.lastNumGC; i < num; i++ {
|
||||
pause := stats.PauseNs[i%256]
|
||||
m.AddSample([]string{"runtime", "gc_pause_ns"}, float32(pause))
|
||||
}
|
||||
m.lastNumGC = num
|
||||
}
|
||||
|
||||
// Inserts a string value at an index into the slice
|
||||
func insert(i int, v string, s []string) []string {
|
||||
s = append(s, "")
|
||||
copy(s[i+1:], s[i:])
|
||||
s[i] = v
|
||||
return s
|
||||
}
|
262
vendor/github.com/armon/go-metrics/metrics_test.go
generated
vendored
262
vendor/github.com/armon/go-metrics/metrics_test.go
generated
vendored
@ -1,262 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"runtime"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
func mockMetric() (*MockSink, *Metrics) {
|
||||
m := &MockSink{}
|
||||
met := &Metrics{sink: m}
|
||||
return m, met
|
||||
}
|
||||
|
||||
func TestMetrics_SetGauge(t *testing.T) {
|
||||
m, met := mockMetric()
|
||||
met.SetGauge([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.HostName = "test"
|
||||
met.EnableHostname = true
|
||||
met.SetGauge([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "test" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.EnableTypePrefix = true
|
||||
met.SetGauge([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "gauge" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.ServiceName = "service"
|
||||
met.SetGauge([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "service" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetrics_EmitKey(t *testing.T) {
|
||||
m, met := mockMetric()
|
||||
met.EmitKey([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.EnableTypePrefix = true
|
||||
met.EmitKey([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "kv" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.ServiceName = "service"
|
||||
met.EmitKey([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "service" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetrics_IncrCounter(t *testing.T) {
|
||||
m, met := mockMetric()
|
||||
met.IncrCounter([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.EnableTypePrefix = true
|
||||
met.IncrCounter([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "counter" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.ServiceName = "service"
|
||||
met.IncrCounter([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "service" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetrics_AddSample(t *testing.T) {
|
||||
m, met := mockMetric()
|
||||
met.AddSample([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.EnableTypePrefix = true
|
||||
met.AddSample([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "sample" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.ServiceName = "service"
|
||||
met.AddSample([]string{"key"}, float32(1))
|
||||
if m.keys[0][0] != "service" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] != 1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetrics_MeasureSince(t *testing.T) {
|
||||
m, met := mockMetric()
|
||||
met.TimerGranularity = time.Millisecond
|
||||
n := time.Now()
|
||||
met.MeasureSince([]string{"key"}, n)
|
||||
if m.keys[0][0] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] > 0.1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.TimerGranularity = time.Millisecond
|
||||
met.EnableTypePrefix = true
|
||||
met.MeasureSince([]string{"key"}, n)
|
||||
if m.keys[0][0] != "timer" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] > 0.1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
|
||||
m, met = mockMetric()
|
||||
met.TimerGranularity = time.Millisecond
|
||||
met.ServiceName = "service"
|
||||
met.MeasureSince([]string{"key"}, n)
|
||||
if m.keys[0][0] != "service" || m.keys[0][1] != "key" {
|
||||
t.Fatalf("")
|
||||
}
|
||||
if m.vals[0] > 0.1 {
|
||||
t.Fatalf("")
|
||||
}
|
||||
}
|
||||
|
||||
func TestMetrics_EmitRuntimeStats(t *testing.T) {
|
||||
runtime.GC()
|
||||
m, met := mockMetric()
|
||||
met.emitRuntimeStats()
|
||||
|
||||
if m.keys[0][0] != "runtime" || m.keys[0][1] != "num_goroutines" {
|
||||
t.Fatalf("bad key %v", m.keys)
|
||||
}
|
||||
if m.vals[0] <= 1 {
|
||||
t.Fatalf("bad val: %v", m.vals)
|
||||
}
|
||||
|
||||
if m.keys[1][0] != "runtime" || m.keys[1][1] != "alloc_bytes" {
|
||||
t.Fatalf("bad key %v", m.keys)
|
||||
}
|
||||
if m.vals[1] <= 40000 {
|
||||
t.Fatalf("bad val: %v", m.vals)
|
||||
}
|
||||
|
||||
if m.keys[2][0] != "runtime" || m.keys[2][1] != "sys_bytes" {
|
||||
t.Fatalf("bad key %v", m.keys)
|
||||
}
|
||||
if m.vals[2] <= 100000 {
|
||||
t.Fatalf("bad val: %v", m.vals)
|
||||
}
|
||||
|
||||
if m.keys[3][0] != "runtime" || m.keys[3][1] != "malloc_count" {
|
||||
t.Fatalf("bad key %v", m.keys)
|
||||
}
|
||||
if m.vals[3] <= 100 {
|
||||
t.Fatalf("bad val: %v", m.vals)
|
||||
}
|
||||
|
||||
if m.keys[4][0] != "runtime" || m.keys[4][1] != "free_count" {
|
||||
t.Fatalf("bad key %v", m.keys)
|
||||
}
|
||||
if m.vals[4] <= 100 {
|
||||
t.Fatalf("bad val: %v", m.vals)
|
||||
}
|
||||
|
||||
if m.keys[5][0] != "runtime" || m.keys[5][1] != "heap_objects" {
|
||||
t.Fatalf("bad key %v", m.keys)
|
||||
}
|
||||
if m.vals[5] <= 100 {
|
||||
t.Fatalf("bad val: %v", m.vals)
|
||||
}
|
||||
|
||||
if m.keys[6][0] != "runtime" || m.keys[6][1] != "total_gc_pause_ns" {
|
||||
t.Fatalf("bad key %v", m.keys)
|
||||
}
|
||||
if m.vals[6] <= 100000 {
|
||||
t.Fatalf("bad val: %v", m.vals)
|
||||
}
|
||||
|
||||
if m.keys[7][0] != "runtime" || m.keys[7][1] != "total_gc_runs" {
|
||||
t.Fatalf("bad key %v", m.keys)
|
||||
}
|
||||
if m.vals[7] < 1 {
|
||||
t.Fatalf("bad val: %v", m.vals)
|
||||
}
|
||||
|
||||
if m.keys[8][0] != "runtime" || m.keys[8][1] != "gc_pause_ns" {
|
||||
t.Fatalf("bad key %v", m.keys)
|
||||
}
|
||||
if m.vals[8] <= 1000 {
|
||||
t.Fatalf("bad val: %v", m.vals)
|
||||
}
|
||||
}
|
||||
|
||||
func TestInsert(t *testing.T) {
|
||||
k := []string{"hi", "bob"}
|
||||
exp := []string{"hi", "there", "bob"}
|
||||
out := insert(1, "there", k)
|
||||
if !reflect.DeepEqual(exp, out) {
|
||||
t.Fatalf("bad insert %v %v", exp, out)
|
||||
}
|
||||
}
|
89
vendor/github.com/armon/go-metrics/prometheus/prometheus.go
generated
vendored
89
vendor/github.com/armon/go-metrics/prometheus/prometheus.go
generated
vendored
@ -1,89 +0,0 @@
|
||||
// +build go1.3
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"strings"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/prometheus/client_golang/prometheus"
|
||||
)
|
||||
|
||||
type PrometheusSink struct {
|
||||
mu sync.Mutex
|
||||
gauges map[string]prometheus.Gauge
|
||||
summaries map[string]prometheus.Summary
|
||||
counters map[string]prometheus.Counter
|
||||
}
|
||||
|
||||
func NewPrometheusSink() (*PrometheusSink, error) {
|
||||
return &PrometheusSink{
|
||||
gauges: make(map[string]prometheus.Gauge),
|
||||
summaries: make(map[string]prometheus.Summary),
|
||||
counters: make(map[string]prometheus.Counter),
|
||||
}, nil
|
||||
}
|
||||
|
||||
func (p *PrometheusSink) flattenKey(parts []string) string {
|
||||
joined := strings.Join(parts, "_")
|
||||
joined = strings.Replace(joined, " ", "_", -1)
|
||||
joined = strings.Replace(joined, ".", "_", -1)
|
||||
joined = strings.Replace(joined, "-", "_", -1)
|
||||
joined = strings.Replace(joined, "=", "_", -1)
|
||||
return joined
|
||||
}
|
||||
|
||||
func (p *PrometheusSink) SetGauge(parts []string, val float32) {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
key := p.flattenKey(parts)
|
||||
g, ok := p.gauges[key]
|
||||
if !ok {
|
||||
g = prometheus.NewGauge(prometheus.GaugeOpts{
|
||||
Name: key,
|
||||
Help: key,
|
||||
})
|
||||
prometheus.MustRegister(g)
|
||||
p.gauges[key] = g
|
||||
}
|
||||
g.Set(float64(val))
|
||||
}
|
||||
|
||||
func (p *PrometheusSink) AddSample(parts []string, val float32) {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
key := p.flattenKey(parts)
|
||||
g, ok := p.summaries[key]
|
||||
if !ok {
|
||||
g = prometheus.NewSummary(prometheus.SummaryOpts{
|
||||
Name: key,
|
||||
Help: key,
|
||||
MaxAge: 10 * time.Second,
|
||||
})
|
||||
prometheus.MustRegister(g)
|
||||
p.summaries[key] = g
|
||||
}
|
||||
g.Observe(float64(val))
|
||||
}
|
||||
|
||||
// EmitKey is not implemented. Prometheus doesn’t offer a type for which an
|
||||
// arbitrary number of values is retained, as Prometheus works with a pull
|
||||
// model, rather than a push model.
|
||||
func (p *PrometheusSink) EmitKey(key []string, val float32) {
|
||||
}
|
||||
|
||||
func (p *PrometheusSink) IncrCounter(parts []string, val float32) {
|
||||
p.mu.Lock()
|
||||
defer p.mu.Unlock()
|
||||
key := p.flattenKey(parts)
|
||||
g, ok := p.counters[key]
|
||||
if !ok {
|
||||
g = prometheus.NewCounter(prometheus.CounterOpts{
|
||||
Name: key,
|
||||
Help: key,
|
||||
})
|
||||
prometheus.MustRegister(g)
|
||||
p.counters[key] = g
|
||||
}
|
||||
g.Add(float64(val))
|
||||
}
|
52
vendor/github.com/armon/go-metrics/sink.go
generated
vendored
52
vendor/github.com/armon/go-metrics/sink.go
generated
vendored
@ -1,52 +0,0 @@
|
||||
package metrics
|
||||
|
||||
// The MetricSink interface is used to transmit metrics information
|
||||
// to an external system
|
||||
type MetricSink interface {
|
||||
// A Gauge should retain the last value it is set to
|
||||
SetGauge(key []string, val float32)
|
||||
|
||||
// Should emit a Key/Value pair for each call
|
||||
EmitKey(key []string, val float32)
|
||||
|
||||
// Counters should accumulate values
|
||||
IncrCounter(key []string, val float32)
|
||||
|
||||
// Samples are for timing information, where quantiles are used
|
||||
AddSample(key []string, val float32)
|
||||
}
|
||||
|
||||
// BlackholeSink is used to just blackhole messages
|
||||
type BlackholeSink struct{}
|
||||
|
||||
func (*BlackholeSink) SetGauge(key []string, val float32) {}
|
||||
func (*BlackholeSink) EmitKey(key []string, val float32) {}
|
||||
func (*BlackholeSink) IncrCounter(key []string, val float32) {}
|
||||
func (*BlackholeSink) AddSample(key []string, val float32) {}
|
||||
|
||||
// FanoutSink is used to sink to fanout values to multiple sinks
|
||||
type FanoutSink []MetricSink
|
||||
|
||||
func (fh FanoutSink) SetGauge(key []string, val float32) {
|
||||
for _, s := range fh {
|
||||
s.SetGauge(key, val)
|
||||
}
|
||||
}
|
||||
|
||||
func (fh FanoutSink) EmitKey(key []string, val float32) {
|
||||
for _, s := range fh {
|
||||
s.EmitKey(key, val)
|
||||
}
|
||||
}
|
||||
|
||||
func (fh FanoutSink) IncrCounter(key []string, val float32) {
|
||||
for _, s := range fh {
|
||||
s.IncrCounter(key, val)
|
||||
}
|
||||
}
|
||||
|
||||
func (fh FanoutSink) AddSample(key []string, val float32) {
|
||||
for _, s := range fh {
|
||||
s.AddSample(key, val)
|
||||
}
|
||||
}
|
120
vendor/github.com/armon/go-metrics/sink_test.go
generated
vendored
120
vendor/github.com/armon/go-metrics/sink_test.go
generated
vendored
@ -1,120 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
type MockSink struct {
|
||||
keys [][]string
|
||||
vals []float32
|
||||
}
|
||||
|
||||
func (m *MockSink) SetGauge(key []string, val float32) {
|
||||
m.keys = append(m.keys, key)
|
||||
m.vals = append(m.vals, val)
|
||||
}
|
||||
func (m *MockSink) EmitKey(key []string, val float32) {
|
||||
m.keys = append(m.keys, key)
|
||||
m.vals = append(m.vals, val)
|
||||
}
|
||||
func (m *MockSink) IncrCounter(key []string, val float32) {
|
||||
m.keys = append(m.keys, key)
|
||||
m.vals = append(m.vals, val)
|
||||
}
|
||||
func (m *MockSink) AddSample(key []string, val float32) {
|
||||
m.keys = append(m.keys, key)
|
||||
m.vals = append(m.vals, val)
|
||||
}
|
||||
|
||||
func TestFanoutSink_Gauge(t *testing.T) {
|
||||
m1 := &MockSink{}
|
||||
m2 := &MockSink{}
|
||||
fh := &FanoutSink{m1, m2}
|
||||
|
||||
k := []string{"test"}
|
||||
v := float32(42.0)
|
||||
fh.SetGauge(k, v)
|
||||
|
||||
if !reflect.DeepEqual(m1.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m2.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m1.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m2.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
}
|
||||
|
||||
func TestFanoutSink_Key(t *testing.T) {
|
||||
m1 := &MockSink{}
|
||||
m2 := &MockSink{}
|
||||
fh := &FanoutSink{m1, m2}
|
||||
|
||||
k := []string{"test"}
|
||||
v := float32(42.0)
|
||||
fh.EmitKey(k, v)
|
||||
|
||||
if !reflect.DeepEqual(m1.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m2.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m1.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m2.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
}
|
||||
|
||||
func TestFanoutSink_Counter(t *testing.T) {
|
||||
m1 := &MockSink{}
|
||||
m2 := &MockSink{}
|
||||
fh := &FanoutSink{m1, m2}
|
||||
|
||||
k := []string{"test"}
|
||||
v := float32(42.0)
|
||||
fh.IncrCounter(k, v)
|
||||
|
||||
if !reflect.DeepEqual(m1.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m2.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m1.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m2.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
}
|
||||
|
||||
func TestFanoutSink_Sample(t *testing.T) {
|
||||
m1 := &MockSink{}
|
||||
m2 := &MockSink{}
|
||||
fh := &FanoutSink{m1, m2}
|
||||
|
||||
k := []string{"test"}
|
||||
v := float32(42.0)
|
||||
fh.AddSample(k, v)
|
||||
|
||||
if !reflect.DeepEqual(m1.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m2.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m1.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m2.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
}
|
95
vendor/github.com/armon/go-metrics/start.go
generated
vendored
95
vendor/github.com/armon/go-metrics/start.go
generated
vendored
@ -1,95 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"os"
|
||||
"time"
|
||||
)
|
||||
|
||||
// Config is used to configure metrics settings
|
||||
type Config struct {
|
||||
ServiceName string // Prefixed with keys to seperate services
|
||||
HostName string // Hostname to use. If not provided and EnableHostname, it will be os.Hostname
|
||||
EnableHostname bool // Enable prefixing gauge values with hostname
|
||||
EnableRuntimeMetrics bool // Enables profiling of runtime metrics (GC, Goroutines, Memory)
|
||||
EnableTypePrefix bool // Prefixes key with a type ("counter", "gauge", "timer")
|
||||
TimerGranularity time.Duration // Granularity of timers.
|
||||
ProfileInterval time.Duration // Interval to profile runtime metrics
|
||||
}
|
||||
|
||||
// Metrics represents an instance of a metrics sink that can
|
||||
// be used to emit
|
||||
type Metrics struct {
|
||||
Config
|
||||
lastNumGC uint32
|
||||
sink MetricSink
|
||||
}
|
||||
|
||||
// Shared global metrics instance
|
||||
var globalMetrics *Metrics
|
||||
|
||||
func init() {
|
||||
// Initialize to a blackhole sink to avoid errors
|
||||
globalMetrics = &Metrics{sink: &BlackholeSink{}}
|
||||
}
|
||||
|
||||
// DefaultConfig provides a sane default configuration
|
||||
func DefaultConfig(serviceName string) *Config {
|
||||
c := &Config{
|
||||
ServiceName: serviceName, // Use client provided service
|
||||
HostName: "",
|
||||
EnableHostname: true, // Enable hostname prefix
|
||||
EnableRuntimeMetrics: true, // Enable runtime profiling
|
||||
EnableTypePrefix: false, // Disable type prefix
|
||||
TimerGranularity: time.Millisecond, // Timers are in milliseconds
|
||||
ProfileInterval: time.Second, // Poll runtime every second
|
||||
}
|
||||
|
||||
// Try to get the hostname
|
||||
name, _ := os.Hostname()
|
||||
c.HostName = name
|
||||
return c
|
||||
}
|
||||
|
||||
// New is used to create a new instance of Metrics
|
||||
func New(conf *Config, sink MetricSink) (*Metrics, error) {
|
||||
met := &Metrics{}
|
||||
met.Config = *conf
|
||||
met.sink = sink
|
||||
|
||||
// Start the runtime collector
|
||||
if conf.EnableRuntimeMetrics {
|
||||
go met.collectStats()
|
||||
}
|
||||
return met, nil
|
||||
}
|
||||
|
||||
// NewGlobal is the same as New, but it assigns the metrics object to be
|
||||
// used globally as well as returning it.
|
||||
func NewGlobal(conf *Config, sink MetricSink) (*Metrics, error) {
|
||||
metrics, err := New(conf, sink)
|
||||
if err == nil {
|
||||
globalMetrics = metrics
|
||||
}
|
||||
return metrics, err
|
||||
}
|
||||
|
||||
// Proxy all the methods to the globalMetrics instance
|
||||
func SetGauge(key []string, val float32) {
|
||||
globalMetrics.SetGauge(key, val)
|
||||
}
|
||||
|
||||
func EmitKey(key []string, val float32) {
|
||||
globalMetrics.EmitKey(key, val)
|
||||
}
|
||||
|
||||
func IncrCounter(key []string, val float32) {
|
||||
globalMetrics.IncrCounter(key, val)
|
||||
}
|
||||
|
||||
func AddSample(key []string, val float32) {
|
||||
globalMetrics.AddSample(key, val)
|
||||
}
|
||||
|
||||
func MeasureSince(key []string, start time.Time) {
|
||||
globalMetrics.MeasureSince(key, start)
|
||||
}
|
110
vendor/github.com/armon/go-metrics/start_test.go
generated
vendored
110
vendor/github.com/armon/go-metrics/start_test.go
generated
vendored
@ -1,110 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
func TestDefaultConfig(t *testing.T) {
|
||||
conf := DefaultConfig("service")
|
||||
if conf.ServiceName != "service" {
|
||||
t.Fatalf("Bad name")
|
||||
}
|
||||
if conf.HostName == "" {
|
||||
t.Fatalf("missing hostname")
|
||||
}
|
||||
if !conf.EnableHostname || !conf.EnableRuntimeMetrics {
|
||||
t.Fatalf("expect true")
|
||||
}
|
||||
if conf.EnableTypePrefix {
|
||||
t.Fatalf("expect false")
|
||||
}
|
||||
if conf.TimerGranularity != time.Millisecond {
|
||||
t.Fatalf("bad granularity")
|
||||
}
|
||||
if conf.ProfileInterval != time.Second {
|
||||
t.Fatalf("bad interval")
|
||||
}
|
||||
}
|
||||
|
||||
func Test_GlobalMetrics_SetGauge(t *testing.T) {
|
||||
m := &MockSink{}
|
||||
globalMetrics = &Metrics{sink: m}
|
||||
|
||||
k := []string{"test"}
|
||||
v := float32(42.0)
|
||||
SetGauge(k, v)
|
||||
|
||||
if !reflect.DeepEqual(m.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
}
|
||||
|
||||
func Test_GlobalMetrics_EmitKey(t *testing.T) {
|
||||
m := &MockSink{}
|
||||
globalMetrics = &Metrics{sink: m}
|
||||
|
||||
k := []string{"test"}
|
||||
v := float32(42.0)
|
||||
EmitKey(k, v)
|
||||
|
||||
if !reflect.DeepEqual(m.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
}
|
||||
|
||||
func Test_GlobalMetrics_IncrCounter(t *testing.T) {
|
||||
m := &MockSink{}
|
||||
globalMetrics = &Metrics{sink: m}
|
||||
|
||||
k := []string{"test"}
|
||||
v := float32(42.0)
|
||||
IncrCounter(k, v)
|
||||
|
||||
if !reflect.DeepEqual(m.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
}
|
||||
|
||||
func Test_GlobalMetrics_AddSample(t *testing.T) {
|
||||
m := &MockSink{}
|
||||
globalMetrics = &Metrics{sink: m}
|
||||
|
||||
k := []string{"test"}
|
||||
v := float32(42.0)
|
||||
AddSample(k, v)
|
||||
|
||||
if !reflect.DeepEqual(m.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if !reflect.DeepEqual(m.vals[0], v) {
|
||||
t.Fatalf("val not equal")
|
||||
}
|
||||
}
|
||||
|
||||
func Test_GlobalMetrics_MeasureSince(t *testing.T) {
|
||||
m := &MockSink{}
|
||||
globalMetrics = &Metrics{sink: m}
|
||||
globalMetrics.TimerGranularity = time.Millisecond
|
||||
|
||||
k := []string{"test"}
|
||||
now := time.Now()
|
||||
MeasureSince(k, now)
|
||||
|
||||
if !reflect.DeepEqual(m.keys[0], k) {
|
||||
t.Fatalf("key not equal")
|
||||
}
|
||||
if m.vals[0] > 0.1 {
|
||||
t.Fatalf("val too large %v", m.vals[0])
|
||||
}
|
||||
}
|
154
vendor/github.com/armon/go-metrics/statsd.go
generated
vendored
154
vendor/github.com/armon/go-metrics/statsd.go
generated
vendored
@ -1,154 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"log"
|
||||
"net"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
// statsdMaxLen is the maximum size of a packet
|
||||
// to send to statsd
|
||||
statsdMaxLen = 1400
|
||||
)
|
||||
|
||||
// StatsdSink provides a MetricSink that can be used
|
||||
// with a statsite or statsd metrics server. It uses
|
||||
// only UDP packets, while StatsiteSink uses TCP.
|
||||
type StatsdSink struct {
|
||||
addr string
|
||||
metricQueue chan string
|
||||
}
|
||||
|
||||
// NewStatsdSink is used to create a new StatsdSink
|
||||
func NewStatsdSink(addr string) (*StatsdSink, error) {
|
||||
s := &StatsdSink{
|
||||
addr: addr,
|
||||
metricQueue: make(chan string, 4096),
|
||||
}
|
||||
go s.flushMetrics()
|
||||
return s, nil
|
||||
}
|
||||
|
||||
// Close is used to stop flushing to statsd
|
||||
func (s *StatsdSink) Shutdown() {
|
||||
close(s.metricQueue)
|
||||
}
|
||||
|
||||
func (s *StatsdSink) SetGauge(key []string, val float32) {
|
||||
flatKey := s.flattenKey(key)
|
||||
s.pushMetric(fmt.Sprintf("%s:%f|g\n", flatKey, val))
|
||||
}
|
||||
|
||||
func (s *StatsdSink) EmitKey(key []string, val float32) {
|
||||
flatKey := s.flattenKey(key)
|
||||
s.pushMetric(fmt.Sprintf("%s:%f|kv\n", flatKey, val))
|
||||
}
|
||||
|
||||
func (s *StatsdSink) IncrCounter(key []string, val float32) {
|
||||
flatKey := s.flattenKey(key)
|
||||
s.pushMetric(fmt.Sprintf("%s:%f|c\n", flatKey, val))
|
||||
}
|
||||
|
||||
func (s *StatsdSink) AddSample(key []string, val float32) {
|
||||
flatKey := s.flattenKey(key)
|
||||
s.pushMetric(fmt.Sprintf("%s:%f|ms\n", flatKey, val))
|
||||
}
|
||||
|
||||
// Flattens the key for formatting, removes spaces
|
||||
func (s *StatsdSink) flattenKey(parts []string) string {
|
||||
joined := strings.Join(parts, ".")
|
||||
return strings.Map(func(r rune) rune {
|
||||
switch r {
|
||||
case ':':
|
||||
fallthrough
|
||||
case ' ':
|
||||
return '_'
|
||||
default:
|
||||
return r
|
||||
}
|
||||
}, joined)
|
||||
}
|
||||
|
||||
// Does a non-blocking push to the metrics queue
|
||||
func (s *StatsdSink) pushMetric(m string) {
|
||||
select {
|
||||
case s.metricQueue <- m:
|
||||
default:
|
||||
}
|
||||
}
|
||||
|
||||
// Flushes metrics
|
||||
func (s *StatsdSink) flushMetrics() {
|
||||
var sock net.Conn
|
||||
var err error
|
||||
var wait <-chan time.Time
|
||||
ticker := time.NewTicker(flushInterval)
|
||||
defer ticker.Stop()
|
||||
|
||||
CONNECT:
|
||||
// Create a buffer
|
||||
buf := bytes.NewBuffer(nil)
|
||||
|
||||
// Attempt to connect
|
||||
sock, err = net.Dial("udp", s.addr)
|
||||
if err != nil {
|
||||
log.Printf("[ERR] Error connecting to statsd! Err: %s", err)
|
||||
goto WAIT
|
||||
}
|
||||
|
||||
for {
|
||||
select {
|
||||
case metric, ok := <-s.metricQueue:
|
||||
// Get a metric from the queue
|
||||
if !ok {
|
||||
goto QUIT
|
||||
}
|
||||
|
||||
// Check if this would overflow the packet size
|
||||
if len(metric)+buf.Len() > statsdMaxLen {
|
||||
_, err := sock.Write(buf.Bytes())
|
||||
buf.Reset()
|
||||
if err != nil {
|
||||
log.Printf("[ERR] Error writing to statsd! Err: %s", err)
|
||||
goto WAIT
|
||||
}
|
||||
}
|
||||
|
||||
// Append to the buffer
|
||||
buf.WriteString(metric)
|
||||
|
||||
case <-ticker.C:
|
||||
if buf.Len() == 0 {
|
||||
continue
|
||||
}
|
||||
|
||||
_, err := sock.Write(buf.Bytes())
|
||||
buf.Reset()
|
||||
if err != nil {
|
||||
log.Printf("[ERR] Error flushing to statsd! Err: %s", err)
|
||||
goto WAIT
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
WAIT:
|
||||
// Wait for a while
|
||||
wait = time.After(time.Duration(5) * time.Second)
|
||||
for {
|
||||
select {
|
||||
// Dequeue the messages to avoid backlog
|
||||
case _, ok := <-s.metricQueue:
|
||||
if !ok {
|
||||
goto QUIT
|
||||
}
|
||||
case <-wait:
|
||||
goto CONNECT
|
||||
}
|
||||
}
|
||||
QUIT:
|
||||
s.metricQueue = nil
|
||||
}
|
105
vendor/github.com/armon/go-metrics/statsd_test.go
generated
vendored
105
vendor/github.com/armon/go-metrics/statsd_test.go
generated
vendored
@ -1,105 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"net"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
func TestStatsd_Flatten(t *testing.T) {
|
||||
s := &StatsdSink{}
|
||||
flat := s.flattenKey([]string{"a", "b", "c", "d"})
|
||||
if flat != "a.b.c.d" {
|
||||
t.Fatalf("Bad flat")
|
||||
}
|
||||
}
|
||||
|
||||
func TestStatsd_PushFullQueue(t *testing.T) {
|
||||
q := make(chan string, 1)
|
||||
q <- "full"
|
||||
|
||||
s := &StatsdSink{metricQueue: q}
|
||||
s.pushMetric("omit")
|
||||
|
||||
out := <-q
|
||||
if out != "full" {
|
||||
t.Fatalf("bad val %v", out)
|
||||
}
|
||||
|
||||
select {
|
||||
case v := <-q:
|
||||
t.Fatalf("bad val %v", v)
|
||||
default:
|
||||
}
|
||||
}
|
||||
|
||||
func TestStatsd_Conn(t *testing.T) {
|
||||
addr := "127.0.0.1:7524"
|
||||
done := make(chan bool)
|
||||
go func() {
|
||||
list, err := net.ListenUDP("udp", &net.UDPAddr{IP: net.ParseIP("127.0.0.1"), Port: 7524})
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
defer list.Close()
|
||||
buf := make([]byte, 1500)
|
||||
n, err := list.Read(buf)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
buf = buf[:n]
|
||||
reader := bufio.NewReader(bytes.NewReader(buf))
|
||||
|
||||
line, err := reader.ReadString('\n')
|
||||
if err != nil {
|
||||
t.Fatalf("unexpected err %s", err)
|
||||
}
|
||||
if line != "gauge.val:1.000000|g\n" {
|
||||
t.Fatalf("bad line %s", line)
|
||||
}
|
||||
|
||||
line, err = reader.ReadString('\n')
|
||||
if err != nil {
|
||||
t.Fatalf("unexpected err %s", err)
|
||||
}
|
||||
if line != "key.other:2.000000|kv\n" {
|
||||
t.Fatalf("bad line %s", line)
|
||||
}
|
||||
|
||||
line, err = reader.ReadString('\n')
|
||||
if err != nil {
|
||||
t.Fatalf("unexpected err %s", err)
|
||||
}
|
||||
if line != "counter.me:3.000000|c\n" {
|
||||
t.Fatalf("bad line %s", line)
|
||||
}
|
||||
|
||||
line, err = reader.ReadString('\n')
|
||||
if err != nil {
|
||||
t.Fatalf("unexpected err %s", err)
|
||||
}
|
||||
if line != "sample.slow_thingy:4.000000|ms\n" {
|
||||
t.Fatalf("bad line %s", line)
|
||||
}
|
||||
|
||||
done <- true
|
||||
}()
|
||||
s, err := NewStatsdSink(addr)
|
||||
if err != nil {
|
||||
t.Fatalf("bad error")
|
||||
}
|
||||
|
||||
s.SetGauge([]string{"gauge", "val"}, float32(1))
|
||||
s.EmitKey([]string{"key", "other"}, float32(2))
|
||||
s.IncrCounter([]string{"counter", "me"}, float32(3))
|
||||
s.AddSample([]string{"sample", "slow thingy"}, float32(4))
|
||||
|
||||
select {
|
||||
case <-done:
|
||||
s.Shutdown()
|
||||
case <-time.After(3 * time.Second):
|
||||
t.Fatalf("timeout")
|
||||
}
|
||||
}
|
142
vendor/github.com/armon/go-metrics/statsite.go
generated
vendored
142
vendor/github.com/armon/go-metrics/statsite.go
generated
vendored
@ -1,142 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"fmt"
|
||||
"log"
|
||||
"net"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
// We force flush the statsite metrics after this period of
|
||||
// inactivity. Prevents stats from getting stuck in a buffer
|
||||
// forever.
|
||||
flushInterval = 100 * time.Millisecond
|
||||
)
|
||||
|
||||
// StatsiteSink provides a MetricSink that can be used with a
|
||||
// statsite metrics server
|
||||
type StatsiteSink struct {
|
||||
addr string
|
||||
metricQueue chan string
|
||||
}
|
||||
|
||||
// NewStatsiteSink is used to create a new StatsiteSink
|
||||
func NewStatsiteSink(addr string) (*StatsiteSink, error) {
|
||||
s := &StatsiteSink{
|
||||
addr: addr,
|
||||
metricQueue: make(chan string, 4096),
|
||||
}
|
||||
go s.flushMetrics()
|
||||
return s, nil
|
||||
}
|
||||
|
||||
// Close is used to stop flushing to statsite
|
||||
func (s *StatsiteSink) Shutdown() {
|
||||
close(s.metricQueue)
|
||||
}
|
||||
|
||||
func (s *StatsiteSink) SetGauge(key []string, val float32) {
|
||||
flatKey := s.flattenKey(key)
|
||||
s.pushMetric(fmt.Sprintf("%s:%f|g\n", flatKey, val))
|
||||
}
|
||||
|
||||
func (s *StatsiteSink) EmitKey(key []string, val float32) {
|
||||
flatKey := s.flattenKey(key)
|
||||
s.pushMetric(fmt.Sprintf("%s:%f|kv\n", flatKey, val))
|
||||
}
|
||||
|
||||
func (s *StatsiteSink) IncrCounter(key []string, val float32) {
|
||||
flatKey := s.flattenKey(key)
|
||||
s.pushMetric(fmt.Sprintf("%s:%f|c\n", flatKey, val))
|
||||
}
|
||||
|
||||
func (s *StatsiteSink) AddSample(key []string, val float32) {
|
||||
flatKey := s.flattenKey(key)
|
||||
s.pushMetric(fmt.Sprintf("%s:%f|ms\n", flatKey, val))
|
||||
}
|
||||
|
||||
// Flattens the key for formatting, removes spaces
|
||||
func (s *StatsiteSink) flattenKey(parts []string) string {
|
||||
joined := strings.Join(parts, ".")
|
||||
return strings.Map(func(r rune) rune {
|
||||
switch r {
|
||||
case ':':
|
||||
fallthrough
|
||||
case ' ':
|
||||
return '_'
|
||||
default:
|
||||
return r
|
||||
}
|
||||
}, joined)
|
||||
}
|
||||
|
||||
// Does a non-blocking push to the metrics queue
|
||||
func (s *StatsiteSink) pushMetric(m string) {
|
||||
select {
|
||||
case s.metricQueue <- m:
|
||||
default:
|
||||
}
|
||||
}
|
||||
|
||||
// Flushes metrics
|
||||
func (s *StatsiteSink) flushMetrics() {
|
||||
var sock net.Conn
|
||||
var err error
|
||||
var wait <-chan time.Time
|
||||
var buffered *bufio.Writer
|
||||
ticker := time.NewTicker(flushInterval)
|
||||
defer ticker.Stop()
|
||||
|
||||
CONNECT:
|
||||
// Attempt to connect
|
||||
sock, err = net.Dial("tcp", s.addr)
|
||||
if err != nil {
|
||||
log.Printf("[ERR] Error connecting to statsite! Err: %s", err)
|
||||
goto WAIT
|
||||
}
|
||||
|
||||
// Create a buffered writer
|
||||
buffered = bufio.NewWriter(sock)
|
||||
|
||||
for {
|
||||
select {
|
||||
case metric, ok := <-s.metricQueue:
|
||||
// Get a metric from the queue
|
||||
if !ok {
|
||||
goto QUIT
|
||||
}
|
||||
|
||||
// Try to send to statsite
|
||||
_, err := buffered.Write([]byte(metric))
|
||||
if err != nil {
|
||||
log.Printf("[ERR] Error writing to statsite! Err: %s", err)
|
||||
goto WAIT
|
||||
}
|
||||
case <-ticker.C:
|
||||
if err := buffered.Flush(); err != nil {
|
||||
log.Printf("[ERR] Error flushing to statsite! Err: %s", err)
|
||||
goto WAIT
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
WAIT:
|
||||
// Wait for a while
|
||||
wait = time.After(time.Duration(5) * time.Second)
|
||||
for {
|
||||
select {
|
||||
// Dequeue the messages to avoid backlog
|
||||
case _, ok := <-s.metricQueue:
|
||||
if !ok {
|
||||
goto QUIT
|
||||
}
|
||||
case <-wait:
|
||||
goto CONNECT
|
||||
}
|
||||
}
|
||||
QUIT:
|
||||
s.metricQueue = nil
|
||||
}
|
101
vendor/github.com/armon/go-metrics/statsite_test.go
generated
vendored
101
vendor/github.com/armon/go-metrics/statsite_test.go
generated
vendored
@ -1,101 +0,0 @@
|
||||
package metrics
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"net"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
func acceptConn(addr string) net.Conn {
|
||||
ln, _ := net.Listen("tcp", addr)
|
||||
conn, _ := ln.Accept()
|
||||
return conn
|
||||
}
|
||||
|
||||
func TestStatsite_Flatten(t *testing.T) {
|
||||
s := &StatsiteSink{}
|
||||
flat := s.flattenKey([]string{"a", "b", "c", "d"})
|
||||
if flat != "a.b.c.d" {
|
||||
t.Fatalf("Bad flat")
|
||||
}
|
||||
}
|
||||
|
||||
func TestStatsite_PushFullQueue(t *testing.T) {
|
||||
q := make(chan string, 1)
|
||||
q <- "full"
|
||||
|
||||
s := &StatsiteSink{metricQueue: q}
|
||||
s.pushMetric("omit")
|
||||
|
||||
out := <-q
|
||||
if out != "full" {
|
||||
t.Fatalf("bad val %v", out)
|
||||
}
|
||||
|
||||
select {
|
||||
case v := <-q:
|
||||
t.Fatalf("bad val %v", v)
|
||||
default:
|
||||
}
|
||||
}
|
||||
|
||||
func TestStatsite_Conn(t *testing.T) {
|
||||
addr := "localhost:7523"
|
||||
done := make(chan bool)
|
||||
go func() {
|
||||
conn := acceptConn(addr)
|
||||
reader := bufio.NewReader(conn)
|
||||
|
||||
line, err := reader.ReadString('\n')
|
||||
if err != nil {
|
||||
t.Fatalf("unexpected err %s", err)
|
||||
}
|
||||
if line != "gauge.val:1.000000|g\n" {
|
||||
t.Fatalf("bad line %s", line)
|
||||
}
|
||||
|
||||
line, err = reader.ReadString('\n')
|
||||
if err != nil {
|
||||
t.Fatalf("unexpected err %s", err)
|
||||
}
|
||||
if line != "key.other:2.000000|kv\n" {
|
||||
t.Fatalf("bad line %s", line)
|
||||
}
|
||||
|
||||
line, err = reader.ReadString('\n')
|
||||
if err != nil {
|
||||
t.Fatalf("unexpected err %s", err)
|
||||
}
|
||||
if line != "counter.me:3.000000|c\n" {
|
||||
t.Fatalf("bad line %s", line)
|
||||
}
|
||||
|
||||
line, err = reader.ReadString('\n')
|
||||
if err != nil {
|
||||
t.Fatalf("unexpected err %s", err)
|
||||
}
|
||||
if line != "sample.slow_thingy:4.000000|ms\n" {
|
||||
t.Fatalf("bad line %s", line)
|
||||
}
|
||||
|
||||
conn.Close()
|
||||
done <- true
|
||||
}()
|
||||
s, err := NewStatsiteSink(addr)
|
||||
if err != nil {
|
||||
t.Fatalf("bad error")
|
||||
}
|
||||
|
||||
s.SetGauge([]string{"gauge", "val"}, float32(1))
|
||||
s.EmitKey([]string{"key", "other"}, float32(2))
|
||||
s.IncrCounter([]string{"counter", "me"}, float32(3))
|
||||
s.AddSample([]string{"sample", "slow thingy"}, float32(4))
|
||||
|
||||
select {
|
||||
case <-done:
|
||||
s.Shutdown()
|
||||
case <-time.After(3 * time.Second):
|
||||
t.Fatalf("timeout")
|
||||
}
|
||||
}
|
4
vendor/github.com/boltdb/bolt/.gitignore
generated
vendored
4
vendor/github.com/boltdb/bolt/.gitignore
generated
vendored
@ -1,4 +0,0 @@
|
||||
*.prof
|
||||
*.test
|
||||
*.swp
|
||||
/bin/
|
20
vendor/github.com/boltdb/bolt/LICENSE
generated
vendored
20
vendor/github.com/boltdb/bolt/LICENSE
generated
vendored
@ -1,20 +0,0 @@
|
||||
The MIT License (MIT)
|
||||
|
||||
Copyright (c) 2013 Ben Johnson
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy of
|
||||
this software and associated documentation files (the "Software"), to deal in
|
||||
the Software without restriction, including without limitation the rights to
|
||||
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
|
||||
the Software, and to permit persons to whom the Software is furnished to do so,
|
||||
subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
|
||||
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
|
||||
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
|
||||
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
18
vendor/github.com/boltdb/bolt/Makefile
generated
vendored
18
vendor/github.com/boltdb/bolt/Makefile
generated
vendored
@ -1,18 +0,0 @@
|
||||
BRANCH=`git rev-parse --abbrev-ref HEAD`
|
||||
COMMIT=`git rev-parse --short HEAD`
|
||||
GOLDFLAGS="-X main.branch $(BRANCH) -X main.commit $(COMMIT)"
|
||||
|
||||
default: build
|
||||
|
||||
race:
|
||||
@go test -v -race -test.run="TestSimulate_(100op|1000op)"
|
||||
|
||||
# go get github.com/kisielk/errcheck
|
||||
errcheck:
|
||||
@errcheck -ignorepkg=bytes -ignore=os:Remove github.com/boltdb/bolt
|
||||
|
||||
test:
|
||||
@go test -v -cover .
|
||||
@go test -v ./cmd/bolt
|
||||
|
||||
.PHONY: fmt test
|
915
vendor/github.com/boltdb/bolt/README.md
generated
vendored
915
vendor/github.com/boltdb/bolt/README.md
generated
vendored
@ -1,915 +0,0 @@
|
||||
Bolt [![Coverage Status](https://coveralls.io/repos/boltdb/bolt/badge.svg?branch=master)](https://coveralls.io/r/boltdb/bolt?branch=master) [![GoDoc](https://godoc.org/github.com/boltdb/bolt?status.svg)](https://godoc.org/github.com/boltdb/bolt) ![Version](https://img.shields.io/badge/version-1.2.1-green.svg)
|
||||
====
|
||||
|
||||
Bolt is a pure Go key/value store inspired by [Howard Chu's][hyc_symas]
|
||||
[LMDB project][lmdb]. The goal of the project is to provide a simple,
|
||||
fast, and reliable database for projects that don't require a full database
|
||||
server such as Postgres or MySQL.
|
||||
|
||||
Since Bolt is meant to be used as such a low-level piece of functionality,
|
||||
simplicity is key. The API will be small and only focus on getting values
|
||||
and setting values. That's it.
|
||||
|
||||
[hyc_symas]: https://twitter.com/hyc_symas
|
||||
[lmdb]: http://symas.com/mdb/
|
||||
|
||||
## Project Status
|
||||
|
||||
Bolt is stable, the API is fixed, and the file format is fixed. Full unit
|
||||
test coverage and randomized black box testing are used to ensure database
|
||||
consistency and thread safety. Bolt is currently used in high-load production
|
||||
environments serving databases as large as 1TB. Many companies such as
|
||||
Shopify and Heroku use Bolt-backed services every day.
|
||||
|
||||
## Table of Contents
|
||||
|
||||
- [Getting Started](#getting-started)
|
||||
- [Installing](#installing)
|
||||
- [Opening a database](#opening-a-database)
|
||||
- [Transactions](#transactions)
|
||||
- [Read-write transactions](#read-write-transactions)
|
||||
- [Read-only transactions](#read-only-transactions)
|
||||
- [Batch read-write transactions](#batch-read-write-transactions)
|
||||
- [Managing transactions manually](#managing-transactions-manually)
|
||||
- [Using buckets](#using-buckets)
|
||||
- [Using key/value pairs](#using-keyvalue-pairs)
|
||||
- [Autoincrementing integer for the bucket](#autoincrementing-integer-for-the-bucket)
|
||||
- [Iterating over keys](#iterating-over-keys)
|
||||
- [Prefix scans](#prefix-scans)
|
||||
- [Range scans](#range-scans)
|
||||
- [ForEach()](#foreach)
|
||||
- [Nested buckets](#nested-buckets)
|
||||
- [Database backups](#database-backups)
|
||||
- [Statistics](#statistics)
|
||||
- [Read-Only Mode](#read-only-mode)
|
||||
- [Mobile Use (iOS/Android)](#mobile-use-iosandroid)
|
||||
- [Resources](#resources)
|
||||
- [Comparison with other databases](#comparison-with-other-databases)
|
||||
- [Postgres, MySQL, & other relational databases](#postgres-mysql--other-relational-databases)
|
||||
- [LevelDB, RocksDB](#leveldb-rocksdb)
|
||||
- [LMDB](#lmdb)
|
||||
- [Caveats & Limitations](#caveats--limitations)
|
||||
- [Reading the Source](#reading-the-source)
|
||||
- [Other Projects Using Bolt](#other-projects-using-bolt)
|
||||
|
||||
## Getting Started
|
||||
|
||||
### Installing
|
||||
|
||||
To start using Bolt, install Go and run `go get`:
|
||||
|
||||
```sh
|
||||
$ go get github.com/boltdb/bolt/...
|
||||
```
|
||||
|
||||
This will retrieve the library and install the `bolt` command line utility into
|
||||
your `$GOBIN` path.
|
||||
|
||||
|
||||
### Opening a database
|
||||
|
||||
The top-level object in Bolt is a `DB`. It is represented as a single file on
|
||||
your disk and represents a consistent snapshot of your data.
|
||||
|
||||
To open your database, simply use the `bolt.Open()` function:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
|
||||
"github.com/boltdb/bolt"
|
||||
)
|
||||
|
||||
func main() {
|
||||
// Open the my.db data file in your current directory.
|
||||
// It will be created if it doesn't exist.
|
||||
db, err := bolt.Open("my.db", 0600, nil)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
defer db.Close()
|
||||
|
||||
...
|
||||
}
|
||||
```
|
||||
|
||||
Please note that Bolt obtains a file lock on the data file so multiple processes
|
||||
cannot open the same database at the same time. Opening an already open Bolt
|
||||
database will cause it to hang until the other process closes it. To prevent
|
||||
an indefinite wait you can pass a timeout option to the `Open()` function:
|
||||
|
||||
```go
|
||||
db, err := bolt.Open("my.db", 0600, &bolt.Options{Timeout: 1 * time.Second})
|
||||
```
|
||||
|
||||
|
||||
### Transactions
|
||||
|
||||
Bolt allows only one read-write transaction at a time but allows as many
|
||||
read-only transactions as you want at a time. Each transaction has a consistent
|
||||
view of the data as it existed when the transaction started.
|
||||
|
||||
Individual transactions and all objects created from them (e.g. buckets, keys)
|
||||
are not thread safe. To work with data in multiple goroutines you must start
|
||||
a transaction for each one or use locking to ensure only one goroutine accesses
|
||||
a transaction at a time. Creating transaction from the `DB` is thread safe.
|
||||
|
||||
Read-only transactions and read-write transactions should not depend on one
|
||||
another and generally shouldn't be opened simultaneously in the same goroutine.
|
||||
This can cause a deadlock as the read-write transaction needs to periodically
|
||||
re-map the data file but it cannot do so while a read-only transaction is open.
|
||||
|
||||
|
||||
#### Read-write transactions
|
||||
|
||||
To start a read-write transaction, you can use the `DB.Update()` function:
|
||||
|
||||
```go
|
||||
err := db.Update(func(tx *bolt.Tx) error {
|
||||
...
|
||||
return nil
|
||||
})
|
||||
```
|
||||
|
||||
Inside the closure, you have a consistent view of the database. You commit the
|
||||
transaction by returning `nil` at the end. You can also rollback the transaction
|
||||
at any point by returning an error. All database operations are allowed inside
|
||||
a read-write transaction.
|
||||
|
||||
Always check the return error as it will report any disk failures that can cause
|
||||
your transaction to not complete. If you return an error within your closure
|
||||
it will be passed through.
|
||||
|
||||
|
||||
#### Read-only transactions
|
||||
|
||||
To start a read-only transaction, you can use the `DB.View()` function:
|
||||
|
||||
```go
|
||||
err := db.View(func(tx *bolt.Tx) error {
|
||||
...
|
||||
return nil
|
||||
})
|
||||
```
|
||||
|
||||
You also get a consistent view of the database within this closure, however,
|
||||
no mutating operations are allowed within a read-only transaction. You can only
|
||||
retrieve buckets, retrieve values, and copy the database within a read-only
|
||||
transaction.
|
||||
|
||||
|
||||
#### Batch read-write transactions
|
||||
|
||||
Each `DB.Update()` waits for disk to commit the writes. This overhead
|
||||
can be minimized by combining multiple updates with the `DB.Batch()`
|
||||
function:
|
||||
|
||||
```go
|
||||
err := db.Batch(func(tx *bolt.Tx) error {
|
||||
...
|
||||
return nil
|
||||
})
|
||||
```
|
||||
|
||||
Concurrent Batch calls are opportunistically combined into larger
|
||||
transactions. Batch is only useful when there are multiple goroutines
|
||||
calling it.
|
||||
|
||||
The trade-off is that `Batch` can call the given
|
||||
function multiple times, if parts of the transaction fail. The
|
||||
function must be idempotent and side effects must take effect only
|
||||
after a successful return from `DB.Batch()`.
|
||||
|
||||
For example: don't display messages from inside the function, instead
|
||||
set variables in the enclosing scope:
|
||||
|
||||
```go
|
||||
var id uint64
|
||||
err := db.Batch(func(tx *bolt.Tx) error {
|
||||
// Find last key in bucket, decode as bigendian uint64, increment
|
||||
// by one, encode back to []byte, and add new key.
|
||||
...
|
||||
id = newValue
|
||||
return nil
|
||||
})
|
||||
if err != nil {
|
||||
return ...
|
||||
}
|
||||
fmt.Println("Allocated ID %d", id)
|
||||
```
|
||||
|
||||
|
||||
#### Managing transactions manually
|
||||
|
||||
The `DB.View()` and `DB.Update()` functions are wrappers around the `DB.Begin()`
|
||||
function. These helper functions will start the transaction, execute a function,
|
||||
and then safely close your transaction if an error is returned. This is the
|
||||
recommended way to use Bolt transactions.
|
||||
|
||||
However, sometimes you may want to manually start and end your transactions.
|
||||
You can use the `DB.Begin()` function directly but **please** be sure to close
|
||||
the transaction.
|
||||
|
||||
```go
|
||||
// Start a writable transaction.
|
||||
tx, err := db.Begin(true)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer tx.Rollback()
|
||||
|
||||
// Use the transaction...
|
||||
_, err := tx.CreateBucket([]byte("MyBucket"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Commit the transaction and check for error.
|
||||
if err := tx.Commit(); err != nil {
|
||||
return err
|
||||
}
|
||||
```
|
||||
|
||||
The first argument to `DB.Begin()` is a boolean stating if the transaction
|
||||
should be writable.
|
||||
|
||||
|
||||
### Using buckets
|
||||
|
||||
Buckets are collections of key/value pairs within the database. All keys in a
|
||||
bucket must be unique. You can create a bucket using the `DB.CreateBucket()`
|
||||
function:
|
||||
|
||||
```go
|
||||
db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("MyBucket"))
|
||||
if err != nil {
|
||||
return fmt.Errorf("create bucket: %s", err)
|
||||
}
|
||||
return nil
|
||||
})
|
||||
```
|
||||
|
||||
You can also create a bucket only if it doesn't exist by using the
|
||||
`Tx.CreateBucketIfNotExists()` function. It's a common pattern to call this
|
||||
function for all your top-level buckets after you open your database so you can
|
||||
guarantee that they exist for future transactions.
|
||||
|
||||
To delete a bucket, simply call the `Tx.DeleteBucket()` function.
|
||||
|
||||
|
||||
### Using key/value pairs
|
||||
|
||||
To save a key/value pair to a bucket, use the `Bucket.Put()` function:
|
||||
|
||||
```go
|
||||
db.Update(func(tx *bolt.Tx) error {
|
||||
b := tx.Bucket([]byte("MyBucket"))
|
||||
err := b.Put([]byte("answer"), []byte("42"))
|
||||
return err
|
||||
})
|
||||
```
|
||||
|
||||
This will set the value of the `"answer"` key to `"42"` in the `MyBucket`
|
||||
bucket. To retrieve this value, we can use the `Bucket.Get()` function:
|
||||
|
||||
```go
|
||||
db.View(func(tx *bolt.Tx) error {
|
||||
b := tx.Bucket([]byte("MyBucket"))
|
||||
v := b.Get([]byte("answer"))
|
||||
fmt.Printf("The answer is: %s\n", v)
|
||||
return nil
|
||||
})
|
||||
```
|
||||
|
||||
The `Get()` function does not return an error because its operation is
|
||||
guaranteed to work (unless there is some kind of system failure). If the key
|
||||
exists then it will return its byte slice value. If it doesn't exist then it
|
||||
will return `nil`. It's important to note that you can have a zero-length value
|
||||
set to a key which is different than the key not existing.
|
||||
|
||||
Use the `Bucket.Delete()` function to delete a key from the bucket.
|
||||
|
||||
Please note that values returned from `Get()` are only valid while the
|
||||
transaction is open. If you need to use a value outside of the transaction
|
||||
then you must use `copy()` to copy it to another byte slice.
|
||||
|
||||
|
||||
### Autoincrementing integer for the bucket
|
||||
By using the `NextSequence()` function, you can let Bolt determine a sequence
|
||||
which can be used as the unique identifier for your key/value pairs. See the
|
||||
example below.
|
||||
|
||||
```go
|
||||
// CreateUser saves u to the store. The new user ID is set on u once the data is persisted.
|
||||
func (s *Store) CreateUser(u *User) error {
|
||||
return s.db.Update(func(tx *bolt.Tx) error {
|
||||
// Retrieve the users bucket.
|
||||
// This should be created when the DB is first opened.
|
||||
b := tx.Bucket([]byte("users"))
|
||||
|
||||
// Generate ID for the user.
|
||||
// This returns an error only if the Tx is closed or not writeable.
|
||||
// That can't happen in an Update() call so I ignore the error check.
|
||||
id, _ := b.NextSequence()
|
||||
u.ID = int(id)
|
||||
|
||||
// Marshal user data into bytes.
|
||||
buf, err := json.Marshal(u)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Persist bytes to users bucket.
|
||||
return b.Put(itob(u.ID), buf)
|
||||
})
|
||||
}
|
||||
|
||||
// itob returns an 8-byte big endian representation of v.
|
||||
func itob(v int) []byte {
|
||||
b := make([]byte, 8)
|
||||
binary.BigEndian.PutUint64(b, uint64(v))
|
||||
return b
|
||||
}
|
||||
|
||||
type User struct {
|
||||
ID int
|
||||
...
|
||||
}
|
||||
```
|
||||
|
||||
### Iterating over keys
|
||||
|
||||
Bolt stores its keys in byte-sorted order within a bucket. This makes sequential
|
||||
iteration over these keys extremely fast. To iterate over keys we'll use a
|
||||
`Cursor`:
|
||||
|
||||
```go
|
||||
db.View(func(tx *bolt.Tx) error {
|
||||
// Assume bucket exists and has keys
|
||||
b := tx.Bucket([]byte("MyBucket"))
|
||||
|
||||
c := b.Cursor()
|
||||
|
||||
for k, v := c.First(); k != nil; k, v = c.Next() {
|
||||
fmt.Printf("key=%s, value=%s\n", k, v)
|
||||
}
|
||||
|
||||
return nil
|
||||
})
|
||||
```
|
||||
|
||||
The cursor allows you to move to a specific point in the list of keys and move
|
||||
forward or backward through the keys one at a time.
|
||||
|
||||
The following functions are available on the cursor:
|
||||
|
||||
```
|
||||
First() Move to the first key.
|
||||
Last() Move to the last key.
|
||||
Seek() Move to a specific key.
|
||||
Next() Move to the next key.
|
||||
Prev() Move to the previous key.
|
||||
```
|
||||
|
||||
Each of those functions has a return signature of `(key []byte, value []byte)`.
|
||||
When you have iterated to the end of the cursor then `Next()` will return a
|
||||
`nil` key. You must seek to a position using `First()`, `Last()`, or `Seek()`
|
||||
before calling `Next()` or `Prev()`. If you do not seek to a position then
|
||||
these functions will return a `nil` key.
|
||||
|
||||
During iteration, if the key is non-`nil` but the value is `nil`, that means
|
||||
the key refers to a bucket rather than a value. Use `Bucket.Bucket()` to
|
||||
access the sub-bucket.
|
||||
|
||||
|
||||
#### Prefix scans
|
||||
|
||||
To iterate over a key prefix, you can combine `Seek()` and `bytes.HasPrefix()`:
|
||||
|
||||
```go
|
||||
db.View(func(tx *bolt.Tx) error {
|
||||
// Assume bucket exists and has keys
|
||||
c := tx.Bucket([]byte("MyBucket")).Cursor()
|
||||
|
||||
prefix := []byte("1234")
|
||||
for k, v := c.Seek(prefix); k != nil && bytes.HasPrefix(k, prefix); k, v = c.Next() {
|
||||
fmt.Printf("key=%s, value=%s\n", k, v)
|
||||
}
|
||||
|
||||
return nil
|
||||
})
|
||||
```
|
||||
|
||||
#### Range scans
|
||||
|
||||
Another common use case is scanning over a range such as a time range. If you
|
||||
use a sortable time encoding such as RFC3339 then you can query a specific
|
||||
date range like this:
|
||||
|
||||
```go
|
||||
db.View(func(tx *bolt.Tx) error {
|
||||
// Assume our events bucket exists and has RFC3339 encoded time keys.
|
||||
c := tx.Bucket([]byte("Events")).Cursor()
|
||||
|
||||
// Our time range spans the 90's decade.
|
||||
min := []byte("1990-01-01T00:00:00Z")
|
||||
max := []byte("2000-01-01T00:00:00Z")
|
||||
|
||||
// Iterate over the 90's.
|
||||
for k, v := c.Seek(min); k != nil && bytes.Compare(k, max) <= 0; k, v = c.Next() {
|
||||
fmt.Printf("%s: %s\n", k, v)
|
||||
}
|
||||
|
||||
return nil
|
||||
})
|
||||
```
|
||||
|
||||
Note that, while RFC3339 is sortable, the Golang implementation of RFC3339Nano does not use a fixed number of digits after the decimal point and is therefore not sortable.
|
||||
|
||||
|
||||
#### ForEach()
|
||||
|
||||
You can also use the function `ForEach()` if you know you'll be iterating over
|
||||
all the keys in a bucket:
|
||||
|
||||
```go
|
||||
db.View(func(tx *bolt.Tx) error {
|
||||
// Assume bucket exists and has keys
|
||||
b := tx.Bucket([]byte("MyBucket"))
|
||||
|
||||
b.ForEach(func(k, v []byte) error {
|
||||
fmt.Printf("key=%s, value=%s\n", k, v)
|
||||
return nil
|
||||
})
|
||||
return nil
|
||||
})
|
||||
```
|
||||
|
||||
Please note that keys and values in `ForEach()` are only valid while
|
||||
the transaction is open. If you need to use a key or value outside of
|
||||
the transaction, you must use `copy()` to copy it to another byte
|
||||
slice.
|
||||
|
||||
### Nested buckets
|
||||
|
||||
You can also store a bucket in a key to create nested buckets. The API is the
|
||||
same as the bucket management API on the `DB` object:
|
||||
|
||||
```go
|
||||
func (*Bucket) CreateBucket(key []byte) (*Bucket, error)
|
||||
func (*Bucket) CreateBucketIfNotExists(key []byte) (*Bucket, error)
|
||||
func (*Bucket) DeleteBucket(key []byte) error
|
||||
```
|
||||
|
||||
Say you had a multi-tenant application where the root level bucket was the account bucket. Inside of this bucket was a sequence of accounts which themselves are buckets. And inside the sequence bucket you could have many buckets pertaining to the Account itself (Users, Notes, etc) isolating the information into logical groupings.
|
||||
|
||||
```go
|
||||
|
||||
// createUser creates a new user in the given account.
|
||||
func createUser(accountID int, u *User) error {
|
||||
// Start the transaction.
|
||||
tx, err := db.Begin(true)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer tx.Rollback()
|
||||
|
||||
// Retrieve the root bucket for the account.
|
||||
// Assume this has already been created when the account was set up.
|
||||
root := tx.Bucket([]byte(strconv.FormatUint(accountID, 10)))
|
||||
|
||||
// Setup the users bucket.
|
||||
bkt, err := root.CreateBucketIfNotExists([]byte("USERS"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Generate an ID for the new user.
|
||||
userID, err := bkt.NextSequence()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
u.ID = userID
|
||||
|
||||
// Marshal and save the encoded user.
|
||||
if buf, err := json.Marshal(u); err != nil {
|
||||
return err
|
||||
} else if err := bkt.Put([]byte(strconv.FormatUint(u.ID, 10)), buf); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Commit the transaction.
|
||||
if err := tx.Commit(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
```
|
||||
|
||||
|
||||
|
||||
|
||||
### Database backups
|
||||
|
||||
Bolt is a single file so it's easy to backup. You can use the `Tx.WriteTo()`
|
||||
function to write a consistent view of the database to a writer. If you call
|
||||
this from a read-only transaction, it will perform a hot backup and not block
|
||||
your other database reads and writes.
|
||||
|
||||
By default, it will use a regular file handle which will utilize the operating
|
||||
system's page cache. See the [`Tx`](https://godoc.org/github.com/boltdb/bolt#Tx)
|
||||
documentation for information about optimizing for larger-than-RAM datasets.
|
||||
|
||||
One common use case is to backup over HTTP so you can use tools like `cURL` to
|
||||
do database backups:
|
||||
|
||||
```go
|
||||
func BackupHandleFunc(w http.ResponseWriter, req *http.Request) {
|
||||
err := db.View(func(tx *bolt.Tx) error {
|
||||
w.Header().Set("Content-Type", "application/octet-stream")
|
||||
w.Header().Set("Content-Disposition", `attachment; filename="my.db"`)
|
||||
w.Header().Set("Content-Length", strconv.Itoa(int(tx.Size())))
|
||||
_, err := tx.WriteTo(w)
|
||||
return err
|
||||
})
|
||||
if err != nil {
|
||||
http.Error(w, err.Error(), http.StatusInternalServerError)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
Then you can backup using this command:
|
||||
|
||||
```sh
|
||||
$ curl http://localhost/backup > my.db
|
||||
```
|
||||
|
||||
Or you can open your browser to `http://localhost/backup` and it will download
|
||||
automatically.
|
||||
|
||||
If you want to backup to another file you can use the `Tx.CopyFile()` helper
|
||||
function.
|
||||
|
||||
|
||||
### Statistics
|
||||
|
||||
The database keeps a running count of many of the internal operations it
|
||||
performs so you can better understand what's going on. By grabbing a snapshot
|
||||
of these stats at two points in time we can see what operations were performed
|
||||
in that time range.
|
||||
|
||||
For example, we could start a goroutine to log stats every 10 seconds:
|
||||
|
||||
```go
|
||||
go func() {
|
||||
// Grab the initial stats.
|
||||
prev := db.Stats()
|
||||
|
||||
for {
|
||||
// Wait for 10s.
|
||||
time.Sleep(10 * time.Second)
|
||||
|
||||
// Grab the current stats and diff them.
|
||||
stats := db.Stats()
|
||||
diff := stats.Sub(&prev)
|
||||
|
||||
// Encode stats to JSON and print to STDERR.
|
||||
json.NewEncoder(os.Stderr).Encode(diff)
|
||||
|
||||
// Save stats for the next loop.
|
||||
prev = stats
|
||||
}
|
||||
}()
|
||||
```
|
||||
|
||||
It's also useful to pipe these stats to a service such as statsd for monitoring
|
||||
or to provide an HTTP endpoint that will perform a fixed-length sample.
|
||||
|
||||
|
||||
### Read-Only Mode
|
||||
|
||||
Sometimes it is useful to create a shared, read-only Bolt database. To this,
|
||||
set the `Options.ReadOnly` flag when opening your database. Read-only mode
|
||||
uses a shared lock to allow multiple processes to read from the database but
|
||||
it will block any processes from opening the database in read-write mode.
|
||||
|
||||
```go
|
||||
db, err := bolt.Open("my.db", 0666, &bolt.Options{ReadOnly: true})
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
```
|
||||
|
||||
### Mobile Use (iOS/Android)
|
||||
|
||||
Bolt is able to run on mobile devices by leveraging the binding feature of the
|
||||
[gomobile](https://github.com/golang/mobile) tool. Create a struct that will
|
||||
contain your database logic and a reference to a `*bolt.DB` with a initializing
|
||||
constructor that takes in a filepath where the database file will be stored.
|
||||
Neither Android nor iOS require extra permissions or cleanup from using this method.
|
||||
|
||||
```go
|
||||
func NewBoltDB(filepath string) *BoltDB {
|
||||
db, err := bolt.Open(filepath+"/demo.db", 0600, nil)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
return &BoltDB{db}
|
||||
}
|
||||
|
||||
type BoltDB struct {
|
||||
db *bolt.DB
|
||||
...
|
||||
}
|
||||
|
||||
func (b *BoltDB) Path() string {
|
||||
return b.db.Path()
|
||||
}
|
||||
|
||||
func (b *BoltDB) Close() {
|
||||
b.db.Close()
|
||||
}
|
||||
```
|
||||
|
||||
Database logic should be defined as methods on this wrapper struct.
|
||||
|
||||
To initialize this struct from the native language (both platforms now sync
|
||||
their local storage to the cloud. These snippets disable that functionality for the
|
||||
database file):
|
||||
|
||||
#### Android
|
||||
|
||||
```java
|
||||
String path;
|
||||
if (android.os.Build.VERSION.SDK_INT >=android.os.Build.VERSION_CODES.LOLLIPOP){
|
||||
path = getNoBackupFilesDir().getAbsolutePath();
|
||||
} else{
|
||||
path = getFilesDir().getAbsolutePath();
|
||||
}
|
||||
Boltmobiledemo.BoltDB boltDB = Boltmobiledemo.NewBoltDB(path)
|
||||
```
|
||||
|
||||
#### iOS
|
||||
|
||||
```objc
|
||||
- (void)demo {
|
||||
NSString* path = [NSSearchPathForDirectoriesInDomains(NSLibraryDirectory,
|
||||
NSUserDomainMask,
|
||||
YES) objectAtIndex:0];
|
||||
GoBoltmobiledemoBoltDB * demo = GoBoltmobiledemoNewBoltDB(path);
|
||||
[self addSkipBackupAttributeToItemAtPath:demo.path];
|
||||
//Some DB Logic would go here
|
||||
[demo close];
|
||||
}
|
||||
|
||||
- (BOOL)addSkipBackupAttributeToItemAtPath:(NSString *) filePathString
|
||||
{
|
||||
NSURL* URL= [NSURL fileURLWithPath: filePathString];
|
||||
assert([[NSFileManager defaultManager] fileExistsAtPath: [URL path]]);
|
||||
|
||||
NSError *error = nil;
|
||||
BOOL success = [URL setResourceValue: [NSNumber numberWithBool: YES]
|
||||
forKey: NSURLIsExcludedFromBackupKey error: &error];
|
||||
if(!success){
|
||||
NSLog(@"Error excluding %@ from backup %@", [URL lastPathComponent], error);
|
||||
}
|
||||
return success;
|
||||
}
|
||||
|
||||
```
|
||||
|
||||
## Resources
|
||||
|
||||
For more information on getting started with Bolt, check out the following articles:
|
||||
|
||||
* [Intro to BoltDB: Painless Performant Persistence](http://npf.io/2014/07/intro-to-boltdb-painless-performant-persistence/) by [Nate Finch](https://github.com/natefinch).
|
||||
* [Bolt -- an embedded key/value database for Go](https://www.progville.com/go/bolt-embedded-db-golang/) by Progville
|
||||
|
||||
|
||||
## Comparison with other databases
|
||||
|
||||
### Postgres, MySQL, & other relational databases
|
||||
|
||||
Relational databases structure data into rows and are only accessible through
|
||||
the use of SQL. This approach provides flexibility in how you store and query
|
||||
your data but also incurs overhead in parsing and planning SQL statements. Bolt
|
||||
accesses all data by a byte slice key. This makes Bolt fast to read and write
|
||||
data by key but provides no built-in support for joining values together.
|
||||
|
||||
Most relational databases (with the exception of SQLite) are standalone servers
|
||||
that run separately from your application. This gives your systems
|
||||
flexibility to connect multiple application servers to a single database
|
||||
server but also adds overhead in serializing and transporting data over the
|
||||
network. Bolt runs as a library included in your application so all data access
|
||||
has to go through your application's process. This brings data closer to your
|
||||
application but limits multi-process access to the data.
|
||||
|
||||
|
||||
### LevelDB, RocksDB
|
||||
|
||||
LevelDB and its derivatives (RocksDB, HyperLevelDB) are similar to Bolt in that
|
||||
they are libraries bundled into the application, however, their underlying
|
||||
structure is a log-structured merge-tree (LSM tree). An LSM tree optimizes
|
||||
random writes by using a write ahead log and multi-tiered, sorted files called
|
||||
SSTables. Bolt uses a B+tree internally and only a single file. Both approaches
|
||||
have trade-offs.
|
||||
|
||||
If you require a high random write throughput (>10,000 w/sec) or you need to use
|
||||
spinning disks then LevelDB could be a good choice. If your application is
|
||||
read-heavy or does a lot of range scans then Bolt could be a good choice.
|
||||
|
||||
One other important consideration is that LevelDB does not have transactions.
|
||||
It supports batch writing of key/values pairs and it supports read snapshots
|
||||
but it will not give you the ability to do a compare-and-swap operation safely.
|
||||
Bolt supports fully serializable ACID transactions.
|
||||
|
||||
|
||||
### LMDB
|
||||
|
||||
Bolt was originally a port of LMDB so it is architecturally similar. Both use
|
||||
a B+tree, have ACID semantics with fully serializable transactions, and support
|
||||
lock-free MVCC using a single writer and multiple readers.
|
||||
|
||||
The two projects have somewhat diverged. LMDB heavily focuses on raw performance
|
||||
while Bolt has focused on simplicity and ease of use. For example, LMDB allows
|
||||
several unsafe actions such as direct writes for the sake of performance. Bolt
|
||||
opts to disallow actions which can leave the database in a corrupted state. The
|
||||
only exception to this in Bolt is `DB.NoSync`.
|
||||
|
||||
There are also a few differences in API. LMDB requires a maximum mmap size when
|
||||
opening an `mdb_env` whereas Bolt will handle incremental mmap resizing
|
||||
automatically. LMDB overloads the getter and setter functions with multiple
|
||||
flags whereas Bolt splits these specialized cases into their own functions.
|
||||
|
||||
|
||||
## Caveats & Limitations
|
||||
|
||||
It's important to pick the right tool for the job and Bolt is no exception.
|
||||
Here are a few things to note when evaluating and using Bolt:
|
||||
|
||||
* Bolt is good for read intensive workloads. Sequential write performance is
|
||||
also fast but random writes can be slow. You can use `DB.Batch()` or add a
|
||||
write-ahead log to help mitigate this issue.
|
||||
|
||||
* Bolt uses a B+tree internally so there can be a lot of random page access.
|
||||
SSDs provide a significant performance boost over spinning disks.
|
||||
|
||||
* Try to avoid long running read transactions. Bolt uses copy-on-write so
|
||||
old pages cannot be reclaimed while an old transaction is using them.
|
||||
|
||||
* Byte slices returned from Bolt are only valid during a transaction. Once the
|
||||
transaction has been committed or rolled back then the memory they point to
|
||||
can be reused by a new page or can be unmapped from virtual memory and you'll
|
||||
see an `unexpected fault address` panic when accessing it.
|
||||
|
||||
* Bolt uses an exclusive write lock on the database file so it cannot be
|
||||
shared by multiple processes.
|
||||
|
||||
* Be careful when using `Bucket.FillPercent`. Setting a high fill percent for
|
||||
buckets that have random inserts will cause your database to have very poor
|
||||
page utilization.
|
||||
|
||||
* Use larger buckets in general. Smaller buckets causes poor page utilization
|
||||
once they become larger than the page size (typically 4KB).
|
||||
|
||||
* Bulk loading a lot of random writes into a new bucket can be slow as the
|
||||
page will not split until the transaction is committed. Randomly inserting
|
||||
more than 100,000 key/value pairs into a single new bucket in a single
|
||||
transaction is not advised.
|
||||
|
||||
* Bolt uses a memory-mapped file so the underlying operating system handles the
|
||||
caching of the data. Typically, the OS will cache as much of the file as it
|
||||
can in memory and will release memory as needed to other processes. This means
|
||||
that Bolt can show very high memory usage when working with large databases.
|
||||
However, this is expected and the OS will release memory as needed. Bolt can
|
||||
handle databases much larger than the available physical RAM, provided its
|
||||
memory-map fits in the process virtual address space. It may be problematic
|
||||
on 32-bits systems.
|
||||
|
||||
* The data structures in the Bolt database are memory mapped so the data file
|
||||
will be endian specific. This means that you cannot copy a Bolt file from a
|
||||
little endian machine to a big endian machine and have it work. For most
|
||||
users this is not a concern since most modern CPUs are little endian.
|
||||
|
||||
* Because of the way pages are laid out on disk, Bolt cannot truncate data files
|
||||
and return free pages back to the disk. Instead, Bolt maintains a free list
|
||||
of unused pages within its data file. These free pages can be reused by later
|
||||
transactions. This works well for many use cases as databases generally tend
|
||||
to grow. However, it's important to note that deleting large chunks of data
|
||||
will not allow you to reclaim that space on disk.
|
||||
|
||||
For more information on page allocation, [see this comment][page-allocation].
|
||||
|
||||
[page-allocation]: https://github.com/boltdb/bolt/issues/308#issuecomment-74811638
|
||||
|
||||
|
||||
## Reading the Source
|
||||
|
||||
Bolt is a relatively small code base (<3KLOC) for an embedded, serializable,
|
||||
transactional key/value database so it can be a good starting point for people
|
||||
interested in how databases work.
|
||||
|
||||
The best places to start are the main entry points into Bolt:
|
||||
|
||||
- `Open()` - Initializes the reference to the database. It's responsible for
|
||||
creating the database if it doesn't exist, obtaining an exclusive lock on the
|
||||
file, reading the meta pages, & memory-mapping the file.
|
||||
|
||||
- `DB.Begin()` - Starts a read-only or read-write transaction depending on the
|
||||
value of the `writable` argument. This requires briefly obtaining the "meta"
|
||||
lock to keep track of open transactions. Only one read-write transaction can
|
||||
exist at a time so the "rwlock" is acquired during the life of a read-write
|
||||
transaction.
|
||||
|
||||
- `Bucket.Put()` - Writes a key/value pair into a bucket. After validating the
|
||||
arguments, a cursor is used to traverse the B+tree to the page and position
|
||||
where they key & value will be written. Once the position is found, the bucket
|
||||
materializes the underlying page and the page's parent pages into memory as
|
||||
"nodes". These nodes are where mutations occur during read-write transactions.
|
||||
These changes get flushed to disk during commit.
|
||||
|
||||
- `Bucket.Get()` - Retrieves a key/value pair from a bucket. This uses a cursor
|
||||
to move to the page & position of a key/value pair. During a read-only
|
||||
transaction, the key and value data is returned as a direct reference to the
|
||||
underlying mmap file so there's no allocation overhead. For read-write
|
||||
transactions, this data may reference the mmap file or one of the in-memory
|
||||
node values.
|
||||
|
||||
- `Cursor` - This object is simply for traversing the B+tree of on-disk pages
|
||||
or in-memory nodes. It can seek to a specific key, move to the first or last
|
||||
value, or it can move forward or backward. The cursor handles the movement up
|
||||
and down the B+tree transparently to the end user.
|
||||
|
||||
- `Tx.Commit()` - Converts the in-memory dirty nodes and the list of free pages
|
||||
into pages to be written to disk. Writing to disk then occurs in two phases.
|
||||
First, the dirty pages are written to disk and an `fsync()` occurs. Second, a
|
||||
new meta page with an incremented transaction ID is written and another
|
||||
`fsync()` occurs. This two phase write ensures that partially written data
|
||||
pages are ignored in the event of a crash since the meta page pointing to them
|
||||
is never written. Partially written meta pages are invalidated because they
|
||||
are written with a checksum.
|
||||
|
||||
If you have additional notes that could be helpful for others, please submit
|
||||
them via pull request.
|
||||
|
||||
|
||||
## Other Projects Using Bolt
|
||||
|
||||
Below is a list of public, open source projects that use Bolt:
|
||||
|
||||
* [BoltDbWeb](https://github.com/evnix/boltdbweb) - A web based GUI for BoltDB files.
|
||||
* [Operation Go: A Routine Mission](http://gocode.io) - An online programming game for Golang using Bolt for user accounts and a leaderboard.
|
||||
* [Bazil](https://bazil.org/) - A file system that lets your data reside where it is most convenient for it to reside.
|
||||
* [DVID](https://github.com/janelia-flyem/dvid) - Added Bolt as optional storage engine and testing it against Basho-tuned leveldb.
|
||||
* [Skybox Analytics](https://github.com/skybox/skybox) - A standalone funnel analysis tool for web analytics.
|
||||
* [Scuttlebutt](https://github.com/benbjohnson/scuttlebutt) - Uses Bolt to store and process all Twitter mentions of GitHub projects.
|
||||
* [Wiki](https://github.com/peterhellberg/wiki) - A tiny wiki using Goji, BoltDB and Blackfriday.
|
||||
* [ChainStore](https://github.com/pressly/chainstore) - Simple key-value interface to a variety of storage engines organized as a chain of operations.
|
||||
* [MetricBase](https://github.com/msiebuhr/MetricBase) - Single-binary version of Graphite.
|
||||
* [Gitchain](https://github.com/gitchain/gitchain) - Decentralized, peer-to-peer Git repositories aka "Git meets Bitcoin".
|
||||
* [event-shuttle](https://github.com/sclasen/event-shuttle) - A Unix system service to collect and reliably deliver messages to Kafka.
|
||||
* [ipxed](https://github.com/kelseyhightower/ipxed) - Web interface and api for ipxed.
|
||||
* [BoltStore](https://github.com/yosssi/boltstore) - Session store using Bolt.
|
||||
* [photosite/session](https://godoc.org/bitbucket.org/kardianos/photosite/session) - Sessions for a photo viewing site.
|
||||
* [LedisDB](https://github.com/siddontang/ledisdb) - A high performance NoSQL, using Bolt as optional storage.
|
||||
* [ipLocator](https://github.com/AndreasBriese/ipLocator) - A fast ip-geo-location-server using bolt with bloom filters.
|
||||
* [cayley](https://github.com/google/cayley) - Cayley is an open-source graph database using Bolt as optional backend.
|
||||
* [bleve](http://www.blevesearch.com/) - A pure Go search engine similar to ElasticSearch that uses Bolt as the default storage backend.
|
||||
* [tentacool](https://github.com/optiflows/tentacool) - REST api server to manage system stuff (IP, DNS, Gateway...) on a linux server.
|
||||
* [Seaweed File System](https://github.com/chrislusf/seaweedfs) - Highly scalable distributed key~file system with O(1) disk read.
|
||||
* [InfluxDB](https://influxdata.com) - Scalable datastore for metrics, events, and real-time analytics.
|
||||
* [Freehold](http://tshannon.bitbucket.org/freehold/) - An open, secure, and lightweight platform for your files and data.
|
||||
* [Prometheus Annotation Server](https://github.com/oliver006/prom_annotation_server) - Annotation server for PromDash & Prometheus service monitoring system.
|
||||
* [Consul](https://github.com/hashicorp/consul) - Consul is service discovery and configuration made easy. Distributed, highly available, and datacenter-aware.
|
||||
* [Kala](https://github.com/ajvb/kala) - Kala is a modern job scheduler optimized to run on a single node. It is persistent, JSON over HTTP API, ISO 8601 duration notation, and dependent jobs.
|
||||
* [drive](https://github.com/odeke-em/drive) - drive is an unofficial Google Drive command line client for \*NIX operating systems.
|
||||
* [stow](https://github.com/djherbis/stow) - a persistence manager for objects
|
||||
backed by boltdb.
|
||||
* [buckets](https://github.com/joyrexus/buckets) - a bolt wrapper streamlining
|
||||
simple tx and key scans.
|
||||
* [mbuckets](https://github.com/abhigupta912/mbuckets) - A Bolt wrapper that allows easy operations on multi level (nested) buckets.
|
||||
* [Request Baskets](https://github.com/darklynx/request-baskets) - A web service to collect arbitrary HTTP requests and inspect them via REST API or simple web UI, similar to [RequestBin](http://requestb.in/) service
|
||||
* [Go Report Card](https://goreportcard.com/) - Go code quality report cards as a (free and open source) service.
|
||||
* [Boltdb Boilerplate](https://github.com/bobintornado/boltdb-boilerplate) - Boilerplate wrapper around bolt aiming to make simple calls one-liners.
|
||||
* [lru](https://github.com/crowdriff/lru) - Easy to use Bolt-backed Least-Recently-Used (LRU) read-through cache with chainable remote stores.
|
||||
* [Storm](https://github.com/asdine/storm) - Simple and powerful ORM for BoltDB.
|
||||
* [GoWebApp](https://github.com/josephspurrier/gowebapp) - A basic MVC web application in Go using BoltDB.
|
||||
* [SimpleBolt](https://github.com/xyproto/simplebolt) - A simple way to use BoltDB. Deals mainly with strings.
|
||||
* [Algernon](https://github.com/xyproto/algernon) - A HTTP/2 web server with built-in support for Lua. Uses BoltDB as the default database backend.
|
||||
* [MuLiFS](https://github.com/dankomiocevic/mulifs) - Music Library Filesystem creates a filesystem to organise your music files.
|
||||
* [GoShort](https://github.com/pankajkhairnar/goShort) - GoShort is a URL shortener written in Golang and BoltDB for persistent key/value storage and for routing it's using high performent HTTPRouter.
|
||||
* [torrent](https://github.com/anacrolix/torrent) - Full-featured BitTorrent client package and utilities in Go. BoltDB is a storage backend in development.
|
||||
* [gopherpit](https://github.com/gopherpit/gopherpit) - A web service to manage Go remote import paths with custom domains
|
||||
* [bolter](https://github.com/hasit/bolter) - Command-line app for viewing BoltDB file in your terminal.
|
||||
* [btcwallet](https://github.com/btcsuite/btcwallet) - A bitcoin wallet.
|
||||
* [dcrwallet](https://github.com/decred/dcrwallet) - A wallet for the Decred cryptocurrency.
|
||||
* [Ironsmith](https://github.com/timshannon/ironsmith) - A simple, script-driven continuous integration (build - > test -> release) tool, with no external dependencies
|
||||
* [BoltHold](https://github.com/timshannon/bolthold) - An embeddable NoSQL store for Go types built on BoltDB
|
||||
|
||||
If you are using Bolt in a project please send a pull request to add it to the list.
|
18
vendor/github.com/boltdb/bolt/appveyor.yml
generated
vendored
18
vendor/github.com/boltdb/bolt/appveyor.yml
generated
vendored
@ -1,18 +0,0 @@
|
||||
version: "{build}"
|
||||
|
||||
os: Windows Server 2012 R2
|
||||
|
||||
clone_folder: c:\gopath\src\github.com\boltdb\bolt
|
||||
|
||||
environment:
|
||||
GOPATH: c:\gopath
|
||||
|
||||
install:
|
||||
- echo %PATH%
|
||||
- echo %GOPATH%
|
||||
- go version
|
||||
- go env
|
||||
- go get -v -t ./...
|
||||
|
||||
build_script:
|
||||
- go test -v ./...
|
10
vendor/github.com/boltdb/bolt/bolt_386.go
generated
vendored
10
vendor/github.com/boltdb/bolt/bolt_386.go
generated
vendored
@ -1,10 +0,0 @@
|
||||
package bolt
|
||||
|
||||
// maxMapSize represents the largest mmap size supported by Bolt.
|
||||
const maxMapSize = 0x7FFFFFFF // 2GB
|
||||
|
||||
// maxAllocSize is the size used when creating array pointers.
|
||||
const maxAllocSize = 0xFFFFFFF
|
||||
|
||||
// Are unaligned load/stores broken on this arch?
|
||||
var brokenUnaligned = false
|
10
vendor/github.com/boltdb/bolt/bolt_amd64.go
generated
vendored
10
vendor/github.com/boltdb/bolt/bolt_amd64.go
generated
vendored
@ -1,10 +0,0 @@
|
||||
package bolt
|
||||
|
||||
// maxMapSize represents the largest mmap size supported by Bolt.
|
||||
const maxMapSize = 0xFFFFFFFFFFFF // 256TB
|
||||
|
||||
// maxAllocSize is the size used when creating array pointers.
|
||||
const maxAllocSize = 0x7FFFFFFF
|
||||
|
||||
// Are unaligned load/stores broken on this arch?
|
||||
var brokenUnaligned = false
|
28
vendor/github.com/boltdb/bolt/bolt_arm.go
generated
vendored
28
vendor/github.com/boltdb/bolt/bolt_arm.go
generated
vendored
@ -1,28 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import "unsafe"
|
||||
|
||||
// maxMapSize represents the largest mmap size supported by Bolt.
|
||||
const maxMapSize = 0x7FFFFFFF // 2GB
|
||||
|
||||
// maxAllocSize is the size used when creating array pointers.
|
||||
const maxAllocSize = 0xFFFFFFF
|
||||
|
||||
// Are unaligned load/stores broken on this arch?
|
||||
var brokenUnaligned bool
|
||||
|
||||
func init() {
|
||||
// Simple check to see whether this arch handles unaligned load/stores
|
||||
// correctly.
|
||||
|
||||
// ARM9 and older devices require load/stores to be from/to aligned
|
||||
// addresses. If not, the lower 2 bits are cleared and that address is
|
||||
// read in a jumbled up order.
|
||||
|
||||
// See http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka15414.html
|
||||
|
||||
raw := [6]byte{0xfe, 0xef, 0x11, 0x22, 0x22, 0x11}
|
||||
val := *(*uint32)(unsafe.Pointer(uintptr(unsafe.Pointer(&raw)) + 2))
|
||||
|
||||
brokenUnaligned = val != 0x11222211
|
||||
}
|
12
vendor/github.com/boltdb/bolt/bolt_arm64.go
generated
vendored
12
vendor/github.com/boltdb/bolt/bolt_arm64.go
generated
vendored
@ -1,12 +0,0 @@
|
||||
// +build arm64
|
||||
|
||||
package bolt
|
||||
|
||||
// maxMapSize represents the largest mmap size supported by Bolt.
|
||||
const maxMapSize = 0xFFFFFFFFFFFF // 256TB
|
||||
|
||||
// maxAllocSize is the size used when creating array pointers.
|
||||
const maxAllocSize = 0x7FFFFFFF
|
||||
|
||||
// Are unaligned load/stores broken on this arch?
|
||||
var brokenUnaligned = false
|
10
vendor/github.com/boltdb/bolt/bolt_linux.go
generated
vendored
10
vendor/github.com/boltdb/bolt/bolt_linux.go
generated
vendored
@ -1,10 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"syscall"
|
||||
)
|
||||
|
||||
// fdatasync flushes written data to a file descriptor.
|
||||
func fdatasync(db *DB) error {
|
||||
return syscall.Fdatasync(int(db.file.Fd()))
|
||||
}
|
27
vendor/github.com/boltdb/bolt/bolt_openbsd.go
generated
vendored
27
vendor/github.com/boltdb/bolt/bolt_openbsd.go
generated
vendored
@ -1,27 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"syscall"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
const (
|
||||
msAsync = 1 << iota // perform asynchronous writes
|
||||
msSync // perform synchronous writes
|
||||
msInvalidate // invalidate cached data
|
||||
)
|
||||
|
||||
func msync(db *DB) error {
|
||||
_, _, errno := syscall.Syscall(syscall.SYS_MSYNC, uintptr(unsafe.Pointer(db.data)), uintptr(db.datasz), msInvalidate)
|
||||
if errno != 0 {
|
||||
return errno
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func fdatasync(db *DB) error {
|
||||
if db.data != nil {
|
||||
return msync(db)
|
||||
}
|
||||
return db.file.Sync()
|
||||
}
|
9
vendor/github.com/boltdb/bolt/bolt_ppc.go
generated
vendored
9
vendor/github.com/boltdb/bolt/bolt_ppc.go
generated
vendored
@ -1,9 +0,0 @@
|
||||
// +build ppc
|
||||
|
||||
package bolt
|
||||
|
||||
// maxMapSize represents the largest mmap size supported by Bolt.
|
||||
const maxMapSize = 0x7FFFFFFF // 2GB
|
||||
|
||||
// maxAllocSize is the size used when creating array pointers.
|
||||
const maxAllocSize = 0xFFFFFFF
|
12
vendor/github.com/boltdb/bolt/bolt_ppc64.go
generated
vendored
12
vendor/github.com/boltdb/bolt/bolt_ppc64.go
generated
vendored
@ -1,12 +0,0 @@
|
||||
// +build ppc64
|
||||
|
||||
package bolt
|
||||
|
||||
// maxMapSize represents the largest mmap size supported by Bolt.
|
||||
const maxMapSize = 0xFFFFFFFFFFFF // 256TB
|
||||
|
||||
// maxAllocSize is the size used when creating array pointers.
|
||||
const maxAllocSize = 0x7FFFFFFF
|
||||
|
||||
// Are unaligned load/stores broken on this arch?
|
||||
var brokenUnaligned = false
|
12
vendor/github.com/boltdb/bolt/bolt_ppc64le.go
generated
vendored
12
vendor/github.com/boltdb/bolt/bolt_ppc64le.go
generated
vendored
@ -1,12 +0,0 @@
|
||||
// +build ppc64le
|
||||
|
||||
package bolt
|
||||
|
||||
// maxMapSize represents the largest mmap size supported by Bolt.
|
||||
const maxMapSize = 0xFFFFFFFFFFFF // 256TB
|
||||
|
||||
// maxAllocSize is the size used when creating array pointers.
|
||||
const maxAllocSize = 0x7FFFFFFF
|
||||
|
||||
// Are unaligned load/stores broken on this arch?
|
||||
var brokenUnaligned = false
|
12
vendor/github.com/boltdb/bolt/bolt_s390x.go
generated
vendored
12
vendor/github.com/boltdb/bolt/bolt_s390x.go
generated
vendored
@ -1,12 +0,0 @@
|
||||
// +build s390x
|
||||
|
||||
package bolt
|
||||
|
||||
// maxMapSize represents the largest mmap size supported by Bolt.
|
||||
const maxMapSize = 0xFFFFFFFFFFFF // 256TB
|
||||
|
||||
// maxAllocSize is the size used when creating array pointers.
|
||||
const maxAllocSize = 0x7FFFFFFF
|
||||
|
||||
// Are unaligned load/stores broken on this arch?
|
||||
var brokenUnaligned = false
|
89
vendor/github.com/boltdb/bolt/bolt_unix.go
generated
vendored
89
vendor/github.com/boltdb/bolt/bolt_unix.go
generated
vendored
@ -1,89 +0,0 @@
|
||||
// +build !windows,!plan9,!solaris
|
||||
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
"syscall"
|
||||
"time"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// flock acquires an advisory lock on a file descriptor.
|
||||
func flock(db *DB, mode os.FileMode, exclusive bool, timeout time.Duration) error {
|
||||
var t time.Time
|
||||
for {
|
||||
// If we're beyond our timeout then return an error.
|
||||
// This can only occur after we've attempted a flock once.
|
||||
if t.IsZero() {
|
||||
t = time.Now()
|
||||
} else if timeout > 0 && time.Since(t) > timeout {
|
||||
return ErrTimeout
|
||||
}
|
||||
flag := syscall.LOCK_SH
|
||||
if exclusive {
|
||||
flag = syscall.LOCK_EX
|
||||
}
|
||||
|
||||
// Otherwise attempt to obtain an exclusive lock.
|
||||
err := syscall.Flock(int(db.file.Fd()), flag|syscall.LOCK_NB)
|
||||
if err == nil {
|
||||
return nil
|
||||
} else if err != syscall.EWOULDBLOCK {
|
||||
return err
|
||||
}
|
||||
|
||||
// Wait for a bit and try again.
|
||||
time.Sleep(50 * time.Millisecond)
|
||||
}
|
||||
}
|
||||
|
||||
// funlock releases an advisory lock on a file descriptor.
|
||||
func funlock(db *DB) error {
|
||||
return syscall.Flock(int(db.file.Fd()), syscall.LOCK_UN)
|
||||
}
|
||||
|
||||
// mmap memory maps a DB's data file.
|
||||
func mmap(db *DB, sz int) error {
|
||||
// Map the data file to memory.
|
||||
b, err := syscall.Mmap(int(db.file.Fd()), 0, sz, syscall.PROT_READ, syscall.MAP_SHARED|db.MmapFlags)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Advise the kernel that the mmap is accessed randomly.
|
||||
if err := madvise(b, syscall.MADV_RANDOM); err != nil {
|
||||
return fmt.Errorf("madvise: %s", err)
|
||||
}
|
||||
|
||||
// Save the original byte slice and convert to a byte array pointer.
|
||||
db.dataref = b
|
||||
db.data = (*[maxMapSize]byte)(unsafe.Pointer(&b[0]))
|
||||
db.datasz = sz
|
||||
return nil
|
||||
}
|
||||
|
||||
// munmap unmaps a DB's data file from memory.
|
||||
func munmap(db *DB) error {
|
||||
// Ignore the unmap if we have no mapped data.
|
||||
if db.dataref == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Unmap using the original byte slice.
|
||||
err := syscall.Munmap(db.dataref)
|
||||
db.dataref = nil
|
||||
db.data = nil
|
||||
db.datasz = 0
|
||||
return err
|
||||
}
|
||||
|
||||
// NOTE: This function is copied from stdlib because it is not available on darwin.
|
||||
func madvise(b []byte, advice int) (err error) {
|
||||
_, _, e1 := syscall.Syscall(syscall.SYS_MADVISE, uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), uintptr(advice))
|
||||
if e1 != 0 {
|
||||
err = e1
|
||||
}
|
||||
return
|
||||
}
|
90
vendor/github.com/boltdb/bolt/bolt_unix_solaris.go
generated
vendored
90
vendor/github.com/boltdb/bolt/bolt_unix_solaris.go
generated
vendored
@ -1,90 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
"syscall"
|
||||
"time"
|
||||
"unsafe"
|
||||
|
||||
"golang.org/x/sys/unix"
|
||||
)
|
||||
|
||||
// flock acquires an advisory lock on a file descriptor.
|
||||
func flock(db *DB, mode os.FileMode, exclusive bool, timeout time.Duration) error {
|
||||
var t time.Time
|
||||
for {
|
||||
// If we're beyond our timeout then return an error.
|
||||
// This can only occur after we've attempted a flock once.
|
||||
if t.IsZero() {
|
||||
t = time.Now()
|
||||
} else if timeout > 0 && time.Since(t) > timeout {
|
||||
return ErrTimeout
|
||||
}
|
||||
var lock syscall.Flock_t
|
||||
lock.Start = 0
|
||||
lock.Len = 0
|
||||
lock.Pid = 0
|
||||
lock.Whence = 0
|
||||
lock.Pid = 0
|
||||
if exclusive {
|
||||
lock.Type = syscall.F_WRLCK
|
||||
} else {
|
||||
lock.Type = syscall.F_RDLCK
|
||||
}
|
||||
err := syscall.FcntlFlock(db.file.Fd(), syscall.F_SETLK, &lock)
|
||||
if err == nil {
|
||||
return nil
|
||||
} else if err != syscall.EAGAIN {
|
||||
return err
|
||||
}
|
||||
|
||||
// Wait for a bit and try again.
|
||||
time.Sleep(50 * time.Millisecond)
|
||||
}
|
||||
}
|
||||
|
||||
// funlock releases an advisory lock on a file descriptor.
|
||||
func funlock(db *DB) error {
|
||||
var lock syscall.Flock_t
|
||||
lock.Start = 0
|
||||
lock.Len = 0
|
||||
lock.Type = syscall.F_UNLCK
|
||||
lock.Whence = 0
|
||||
return syscall.FcntlFlock(uintptr(db.file.Fd()), syscall.F_SETLK, &lock)
|
||||
}
|
||||
|
||||
// mmap memory maps a DB's data file.
|
||||
func mmap(db *DB, sz int) error {
|
||||
// Map the data file to memory.
|
||||
b, err := unix.Mmap(int(db.file.Fd()), 0, sz, syscall.PROT_READ, syscall.MAP_SHARED|db.MmapFlags)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Advise the kernel that the mmap is accessed randomly.
|
||||
if err := unix.Madvise(b, syscall.MADV_RANDOM); err != nil {
|
||||
return fmt.Errorf("madvise: %s", err)
|
||||
}
|
||||
|
||||
// Save the original byte slice and convert to a byte array pointer.
|
||||
db.dataref = b
|
||||
db.data = (*[maxMapSize]byte)(unsafe.Pointer(&b[0]))
|
||||
db.datasz = sz
|
||||
return nil
|
||||
}
|
||||
|
||||
// munmap unmaps a DB's data file from memory.
|
||||
func munmap(db *DB) error {
|
||||
// Ignore the unmap if we have no mapped data.
|
||||
if db.dataref == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Unmap using the original byte slice.
|
||||
err := unix.Munmap(db.dataref)
|
||||
db.dataref = nil
|
||||
db.data = nil
|
||||
db.datasz = 0
|
||||
return err
|
||||
}
|
144
vendor/github.com/boltdb/bolt/bolt_windows.go
generated
vendored
144
vendor/github.com/boltdb/bolt/bolt_windows.go
generated
vendored
@ -1,144 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
"syscall"
|
||||
"time"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// LockFileEx code derived from golang build filemutex_windows.go @ v1.5.1
|
||||
var (
|
||||
modkernel32 = syscall.NewLazyDLL("kernel32.dll")
|
||||
procLockFileEx = modkernel32.NewProc("LockFileEx")
|
||||
procUnlockFileEx = modkernel32.NewProc("UnlockFileEx")
|
||||
)
|
||||
|
||||
const (
|
||||
lockExt = ".lock"
|
||||
|
||||
// see https://msdn.microsoft.com/en-us/library/windows/desktop/aa365203(v=vs.85).aspx
|
||||
flagLockExclusive = 2
|
||||
flagLockFailImmediately = 1
|
||||
|
||||
// see https://msdn.microsoft.com/en-us/library/windows/desktop/ms681382(v=vs.85).aspx
|
||||
errLockViolation syscall.Errno = 0x21
|
||||
)
|
||||
|
||||
func lockFileEx(h syscall.Handle, flags, reserved, locklow, lockhigh uint32, ol *syscall.Overlapped) (err error) {
|
||||
r, _, err := procLockFileEx.Call(uintptr(h), uintptr(flags), uintptr(reserved), uintptr(locklow), uintptr(lockhigh), uintptr(unsafe.Pointer(ol)))
|
||||
if r == 0 {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func unlockFileEx(h syscall.Handle, reserved, locklow, lockhigh uint32, ol *syscall.Overlapped) (err error) {
|
||||
r, _, err := procUnlockFileEx.Call(uintptr(h), uintptr(reserved), uintptr(locklow), uintptr(lockhigh), uintptr(unsafe.Pointer(ol)), 0)
|
||||
if r == 0 {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// fdatasync flushes written data to a file descriptor.
|
||||
func fdatasync(db *DB) error {
|
||||
return db.file.Sync()
|
||||
}
|
||||
|
||||
// flock acquires an advisory lock on a file descriptor.
|
||||
func flock(db *DB, mode os.FileMode, exclusive bool, timeout time.Duration) error {
|
||||
// Create a separate lock file on windows because a process
|
||||
// cannot share an exclusive lock on the same file. This is
|
||||
// needed during Tx.WriteTo().
|
||||
f, err := os.OpenFile(db.path+lockExt, os.O_CREATE, mode)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
db.lockfile = f
|
||||
|
||||
var t time.Time
|
||||
for {
|
||||
// If we're beyond our timeout then return an error.
|
||||
// This can only occur after we've attempted a flock once.
|
||||
if t.IsZero() {
|
||||
t = time.Now()
|
||||
} else if timeout > 0 && time.Since(t) > timeout {
|
||||
return ErrTimeout
|
||||
}
|
||||
|
||||
var flag uint32 = flagLockFailImmediately
|
||||
if exclusive {
|
||||
flag |= flagLockExclusive
|
||||
}
|
||||
|
||||
err := lockFileEx(syscall.Handle(db.lockfile.Fd()), flag, 0, 1, 0, &syscall.Overlapped{})
|
||||
if err == nil {
|
||||
return nil
|
||||
} else if err != errLockViolation {
|
||||
return err
|
||||
}
|
||||
|
||||
// Wait for a bit and try again.
|
||||
time.Sleep(50 * time.Millisecond)
|
||||
}
|
||||
}
|
||||
|
||||
// funlock releases an advisory lock on a file descriptor.
|
||||
func funlock(db *DB) error {
|
||||
err := unlockFileEx(syscall.Handle(db.lockfile.Fd()), 0, 1, 0, &syscall.Overlapped{})
|
||||
db.lockfile.Close()
|
||||
os.Remove(db.path + lockExt)
|
||||
return err
|
||||
}
|
||||
|
||||
// mmap memory maps a DB's data file.
|
||||
// Based on: https://github.com/edsrzf/mmap-go
|
||||
func mmap(db *DB, sz int) error {
|
||||
if !db.readOnly {
|
||||
// Truncate the database to the size of the mmap.
|
||||
if err := db.file.Truncate(int64(sz)); err != nil {
|
||||
return fmt.Errorf("truncate: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
// Open a file mapping handle.
|
||||
sizelo := uint32(sz >> 32)
|
||||
sizehi := uint32(sz) & 0xffffffff
|
||||
h, errno := syscall.CreateFileMapping(syscall.Handle(db.file.Fd()), nil, syscall.PAGE_READONLY, sizelo, sizehi, nil)
|
||||
if h == 0 {
|
||||
return os.NewSyscallError("CreateFileMapping", errno)
|
||||
}
|
||||
|
||||
// Create the memory map.
|
||||
addr, errno := syscall.MapViewOfFile(h, syscall.FILE_MAP_READ, 0, 0, uintptr(sz))
|
||||
if addr == 0 {
|
||||
return os.NewSyscallError("MapViewOfFile", errno)
|
||||
}
|
||||
|
||||
// Close mapping handle.
|
||||
if err := syscall.CloseHandle(syscall.Handle(h)); err != nil {
|
||||
return os.NewSyscallError("CloseHandle", err)
|
||||
}
|
||||
|
||||
// Convert to a byte array.
|
||||
db.data = ((*[maxMapSize]byte)(unsafe.Pointer(addr)))
|
||||
db.datasz = sz
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// munmap unmaps a pointer from a file.
|
||||
// Based on: https://github.com/edsrzf/mmap-go
|
||||
func munmap(db *DB) error {
|
||||
if db.data == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
addr := (uintptr)(unsafe.Pointer(&db.data[0]))
|
||||
if err := syscall.UnmapViewOfFile(addr); err != nil {
|
||||
return os.NewSyscallError("UnmapViewOfFile", err)
|
||||
}
|
||||
return nil
|
||||
}
|
8
vendor/github.com/boltdb/bolt/boltsync_unix.go
generated
vendored
8
vendor/github.com/boltdb/bolt/boltsync_unix.go
generated
vendored
@ -1,8 +0,0 @@
|
||||
// +build !windows,!plan9,!linux,!openbsd
|
||||
|
||||
package bolt
|
||||
|
||||
// fdatasync flushes written data to a file descriptor.
|
||||
func fdatasync(db *DB) error {
|
||||
return db.file.Sync()
|
||||
}
|
777
vendor/github.com/boltdb/bolt/bucket.go
generated
vendored
777
vendor/github.com/boltdb/bolt/bucket.go
generated
vendored
@ -1,777 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
const (
|
||||
// MaxKeySize is the maximum length of a key, in bytes.
|
||||
MaxKeySize = 32768
|
||||
|
||||
// MaxValueSize is the maximum length of a value, in bytes.
|
||||
MaxValueSize = (1 << 31) - 2
|
||||
)
|
||||
|
||||
const (
|
||||
maxUint = ^uint(0)
|
||||
minUint = 0
|
||||
maxInt = int(^uint(0) >> 1)
|
||||
minInt = -maxInt - 1
|
||||
)
|
||||
|
||||
const bucketHeaderSize = int(unsafe.Sizeof(bucket{}))
|
||||
|
||||
const (
|
||||
minFillPercent = 0.1
|
||||
maxFillPercent = 1.0
|
||||
)
|
||||
|
||||
// DefaultFillPercent is the percentage that split pages are filled.
|
||||
// This value can be changed by setting Bucket.FillPercent.
|
||||
const DefaultFillPercent = 0.5
|
||||
|
||||
// Bucket represents a collection of key/value pairs inside the database.
|
||||
type Bucket struct {
|
||||
*bucket
|
||||
tx *Tx // the associated transaction
|
||||
buckets map[string]*Bucket // subbucket cache
|
||||
page *page // inline page reference
|
||||
rootNode *node // materialized node for the root page.
|
||||
nodes map[pgid]*node // node cache
|
||||
|
||||
// Sets the threshold for filling nodes when they split. By default,
|
||||
// the bucket will fill to 50% but it can be useful to increase this
|
||||
// amount if you know that your write workloads are mostly append-only.
|
||||
//
|
||||
// This is non-persisted across transactions so it must be set in every Tx.
|
||||
FillPercent float64
|
||||
}
|
||||
|
||||
// bucket represents the on-file representation of a bucket.
|
||||
// This is stored as the "value" of a bucket key. If the bucket is small enough,
|
||||
// then its root page can be stored inline in the "value", after the bucket
|
||||
// header. In the case of inline buckets, the "root" will be 0.
|
||||
type bucket struct {
|
||||
root pgid // page id of the bucket's root-level page
|
||||
sequence uint64 // monotonically incrementing, used by NextSequence()
|
||||
}
|
||||
|
||||
// newBucket returns a new bucket associated with a transaction.
|
||||
func newBucket(tx *Tx) Bucket {
|
||||
var b = Bucket{tx: tx, FillPercent: DefaultFillPercent}
|
||||
if tx.writable {
|
||||
b.buckets = make(map[string]*Bucket)
|
||||
b.nodes = make(map[pgid]*node)
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
// Tx returns the tx of the bucket.
|
||||
func (b *Bucket) Tx() *Tx {
|
||||
return b.tx
|
||||
}
|
||||
|
||||
// Root returns the root of the bucket.
|
||||
func (b *Bucket) Root() pgid {
|
||||
return b.root
|
||||
}
|
||||
|
||||
// Writable returns whether the bucket is writable.
|
||||
func (b *Bucket) Writable() bool {
|
||||
return b.tx.writable
|
||||
}
|
||||
|
||||
// Cursor creates a cursor associated with the bucket.
|
||||
// The cursor is only valid as long as the transaction is open.
|
||||
// Do not use a cursor after the transaction is closed.
|
||||
func (b *Bucket) Cursor() *Cursor {
|
||||
// Update transaction statistics.
|
||||
b.tx.stats.CursorCount++
|
||||
|
||||
// Allocate and return a cursor.
|
||||
return &Cursor{
|
||||
bucket: b,
|
||||
stack: make([]elemRef, 0),
|
||||
}
|
||||
}
|
||||
|
||||
// Bucket retrieves a nested bucket by name.
|
||||
// Returns nil if the bucket does not exist.
|
||||
// The bucket instance is only valid for the lifetime of the transaction.
|
||||
func (b *Bucket) Bucket(name []byte) *Bucket {
|
||||
if b.buckets != nil {
|
||||
if child := b.buckets[string(name)]; child != nil {
|
||||
return child
|
||||
}
|
||||
}
|
||||
|
||||
// Move cursor to key.
|
||||
c := b.Cursor()
|
||||
k, v, flags := c.seek(name)
|
||||
|
||||
// Return nil if the key doesn't exist or it is not a bucket.
|
||||
if !bytes.Equal(name, k) || (flags&bucketLeafFlag) == 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Otherwise create a bucket and cache it.
|
||||
var child = b.openBucket(v)
|
||||
if b.buckets != nil {
|
||||
b.buckets[string(name)] = child
|
||||
}
|
||||
|
||||
return child
|
||||
}
|
||||
|
||||
// Helper method that re-interprets a sub-bucket value
|
||||
// from a parent into a Bucket
|
||||
func (b *Bucket) openBucket(value []byte) *Bucket {
|
||||
var child = newBucket(b.tx)
|
||||
|
||||
// If unaligned load/stores are broken on this arch and value is
|
||||
// unaligned simply clone to an aligned byte array.
|
||||
unaligned := brokenUnaligned && uintptr(unsafe.Pointer(&value[0]))&3 != 0
|
||||
|
||||
if unaligned {
|
||||
value = cloneBytes(value)
|
||||
}
|
||||
|
||||
// If this is a writable transaction then we need to copy the bucket entry.
|
||||
// Read-only transactions can point directly at the mmap entry.
|
||||
if b.tx.writable && !unaligned {
|
||||
child.bucket = &bucket{}
|
||||
*child.bucket = *(*bucket)(unsafe.Pointer(&value[0]))
|
||||
} else {
|
||||
child.bucket = (*bucket)(unsafe.Pointer(&value[0]))
|
||||
}
|
||||
|
||||
// Save a reference to the inline page if the bucket is inline.
|
||||
if child.root == 0 {
|
||||
child.page = (*page)(unsafe.Pointer(&value[bucketHeaderSize]))
|
||||
}
|
||||
|
||||
return &child
|
||||
}
|
||||
|
||||
// CreateBucket creates a new bucket at the given key and returns the new bucket.
|
||||
// Returns an error if the key already exists, if the bucket name is blank, or if the bucket name is too long.
|
||||
// The bucket instance is only valid for the lifetime of the transaction.
|
||||
func (b *Bucket) CreateBucket(key []byte) (*Bucket, error) {
|
||||
if b.tx.db == nil {
|
||||
return nil, ErrTxClosed
|
||||
} else if !b.tx.writable {
|
||||
return nil, ErrTxNotWritable
|
||||
} else if len(key) == 0 {
|
||||
return nil, ErrBucketNameRequired
|
||||
}
|
||||
|
||||
// Move cursor to correct position.
|
||||
c := b.Cursor()
|
||||
k, _, flags := c.seek(key)
|
||||
|
||||
// Return an error if there is an existing key.
|
||||
if bytes.Equal(key, k) {
|
||||
if (flags & bucketLeafFlag) != 0 {
|
||||
return nil, ErrBucketExists
|
||||
}
|
||||
return nil, ErrIncompatibleValue
|
||||
}
|
||||
|
||||
// Create empty, inline bucket.
|
||||
var bucket = Bucket{
|
||||
bucket: &bucket{},
|
||||
rootNode: &node{isLeaf: true},
|
||||
FillPercent: DefaultFillPercent,
|
||||
}
|
||||
var value = bucket.write()
|
||||
|
||||
// Insert into node.
|
||||
key = cloneBytes(key)
|
||||
c.node().put(key, key, value, 0, bucketLeafFlag)
|
||||
|
||||
// Since subbuckets are not allowed on inline buckets, we need to
|
||||
// dereference the inline page, if it exists. This will cause the bucket
|
||||
// to be treated as a regular, non-inline bucket for the rest of the tx.
|
||||
b.page = nil
|
||||
|
||||
return b.Bucket(key), nil
|
||||
}
|
||||
|
||||
// CreateBucketIfNotExists creates a new bucket if it doesn't already exist and returns a reference to it.
|
||||
// Returns an error if the bucket name is blank, or if the bucket name is too long.
|
||||
// The bucket instance is only valid for the lifetime of the transaction.
|
||||
func (b *Bucket) CreateBucketIfNotExists(key []byte) (*Bucket, error) {
|
||||
child, err := b.CreateBucket(key)
|
||||
if err == ErrBucketExists {
|
||||
return b.Bucket(key), nil
|
||||
} else if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return child, nil
|
||||
}
|
||||
|
||||
// DeleteBucket deletes a bucket at the given key.
|
||||
// Returns an error if the bucket does not exists, or if the key represents a non-bucket value.
|
||||
func (b *Bucket) DeleteBucket(key []byte) error {
|
||||
if b.tx.db == nil {
|
||||
return ErrTxClosed
|
||||
} else if !b.Writable() {
|
||||
return ErrTxNotWritable
|
||||
}
|
||||
|
||||
// Move cursor to correct position.
|
||||
c := b.Cursor()
|
||||
k, _, flags := c.seek(key)
|
||||
|
||||
// Return an error if bucket doesn't exist or is not a bucket.
|
||||
if !bytes.Equal(key, k) {
|
||||
return ErrBucketNotFound
|
||||
} else if (flags & bucketLeafFlag) == 0 {
|
||||
return ErrIncompatibleValue
|
||||
}
|
||||
|
||||
// Recursively delete all child buckets.
|
||||
child := b.Bucket(key)
|
||||
err := child.ForEach(func(k, v []byte) error {
|
||||
if v == nil {
|
||||
if err := child.DeleteBucket(k); err != nil {
|
||||
return fmt.Errorf("delete bucket: %s", err)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Remove cached copy.
|
||||
delete(b.buckets, string(key))
|
||||
|
||||
// Release all bucket pages to freelist.
|
||||
child.nodes = nil
|
||||
child.rootNode = nil
|
||||
child.free()
|
||||
|
||||
// Delete the node if we have a matching key.
|
||||
c.node().del(key)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Get retrieves the value for a key in the bucket.
|
||||
// Returns a nil value if the key does not exist or if the key is a nested bucket.
|
||||
// The returned value is only valid for the life of the transaction.
|
||||
func (b *Bucket) Get(key []byte) []byte {
|
||||
k, v, flags := b.Cursor().seek(key)
|
||||
|
||||
// Return nil if this is a bucket.
|
||||
if (flags & bucketLeafFlag) != 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
// If our target node isn't the same key as what's passed in then return nil.
|
||||
if !bytes.Equal(key, k) {
|
||||
return nil
|
||||
}
|
||||
return v
|
||||
}
|
||||
|
||||
// Put sets the value for a key in the bucket.
|
||||
// If the key exist then its previous value will be overwritten.
|
||||
// Supplied value must remain valid for the life of the transaction.
|
||||
// Returns an error if the bucket was created from a read-only transaction, if the key is blank, if the key is too large, or if the value is too large.
|
||||
func (b *Bucket) Put(key []byte, value []byte) error {
|
||||
if b.tx.db == nil {
|
||||
return ErrTxClosed
|
||||
} else if !b.Writable() {
|
||||
return ErrTxNotWritable
|
||||
} else if len(key) == 0 {
|
||||
return ErrKeyRequired
|
||||
} else if len(key) > MaxKeySize {
|
||||
return ErrKeyTooLarge
|
||||
} else if int64(len(value)) > MaxValueSize {
|
||||
return ErrValueTooLarge
|
||||
}
|
||||
|
||||
// Move cursor to correct position.
|
||||
c := b.Cursor()
|
||||
k, _, flags := c.seek(key)
|
||||
|
||||
// Return an error if there is an existing key with a bucket value.
|
||||
if bytes.Equal(key, k) && (flags&bucketLeafFlag) != 0 {
|
||||
return ErrIncompatibleValue
|
||||
}
|
||||
|
||||
// Insert into node.
|
||||
key = cloneBytes(key)
|
||||
c.node().put(key, key, value, 0, 0)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Delete removes a key from the bucket.
|
||||
// If the key does not exist then nothing is done and a nil error is returned.
|
||||
// Returns an error if the bucket was created from a read-only transaction.
|
||||
func (b *Bucket) Delete(key []byte) error {
|
||||
if b.tx.db == nil {
|
||||
return ErrTxClosed
|
||||
} else if !b.Writable() {
|
||||
return ErrTxNotWritable
|
||||
}
|
||||
|
||||
// Move cursor to correct position.
|
||||
c := b.Cursor()
|
||||
_, _, flags := c.seek(key)
|
||||
|
||||
// Return an error if there is already existing bucket value.
|
||||
if (flags & bucketLeafFlag) != 0 {
|
||||
return ErrIncompatibleValue
|
||||
}
|
||||
|
||||
// Delete the node if we have a matching key.
|
||||
c.node().del(key)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Sequence returns the current integer for the bucket without incrementing it.
|
||||
func (b *Bucket) Sequence() uint64 { return b.bucket.sequence }
|
||||
|
||||
// SetSequence updates the sequence number for the bucket.
|
||||
func (b *Bucket) SetSequence(v uint64) error {
|
||||
if b.tx.db == nil {
|
||||
return ErrTxClosed
|
||||
} else if !b.Writable() {
|
||||
return ErrTxNotWritable
|
||||
}
|
||||
|
||||
// Materialize the root node if it hasn't been already so that the
|
||||
// bucket will be saved during commit.
|
||||
if b.rootNode == nil {
|
||||
_ = b.node(b.root, nil)
|
||||
}
|
||||
|
||||
// Increment and return the sequence.
|
||||
b.bucket.sequence = v
|
||||
return nil
|
||||
}
|
||||
|
||||
// NextSequence returns an autoincrementing integer for the bucket.
|
||||
func (b *Bucket) NextSequence() (uint64, error) {
|
||||
if b.tx.db == nil {
|
||||
return 0, ErrTxClosed
|
||||
} else if !b.Writable() {
|
||||
return 0, ErrTxNotWritable
|
||||
}
|
||||
|
||||
// Materialize the root node if it hasn't been already so that the
|
||||
// bucket will be saved during commit.
|
||||
if b.rootNode == nil {
|
||||
_ = b.node(b.root, nil)
|
||||
}
|
||||
|
||||
// Increment and return the sequence.
|
||||
b.bucket.sequence++
|
||||
return b.bucket.sequence, nil
|
||||
}
|
||||
|
||||
// ForEach executes a function for each key/value pair in a bucket.
|
||||
// If the provided function returns an error then the iteration is stopped and
|
||||
// the error is returned to the caller. The provided function must not modify
|
||||
// the bucket; this will result in undefined behavior.
|
||||
func (b *Bucket) ForEach(fn func(k, v []byte) error) error {
|
||||
if b.tx.db == nil {
|
||||
return ErrTxClosed
|
||||
}
|
||||
c := b.Cursor()
|
||||
for k, v := c.First(); k != nil; k, v = c.Next() {
|
||||
if err := fn(k, v); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Stat returns stats on a bucket.
|
||||
func (b *Bucket) Stats() BucketStats {
|
||||
var s, subStats BucketStats
|
||||
pageSize := b.tx.db.pageSize
|
||||
s.BucketN += 1
|
||||
if b.root == 0 {
|
||||
s.InlineBucketN += 1
|
||||
}
|
||||
b.forEachPage(func(p *page, depth int) {
|
||||
if (p.flags & leafPageFlag) != 0 {
|
||||
s.KeyN += int(p.count)
|
||||
|
||||
// used totals the used bytes for the page
|
||||
used := pageHeaderSize
|
||||
|
||||
if p.count != 0 {
|
||||
// If page has any elements, add all element headers.
|
||||
used += leafPageElementSize * int(p.count-1)
|
||||
|
||||
// Add all element key, value sizes.
|
||||
// The computation takes advantage of the fact that the position
|
||||
// of the last element's key/value equals to the total of the sizes
|
||||
// of all previous elements' keys and values.
|
||||
// It also includes the last element's header.
|
||||
lastElement := p.leafPageElement(p.count - 1)
|
||||
used += int(lastElement.pos + lastElement.ksize + lastElement.vsize)
|
||||
}
|
||||
|
||||
if b.root == 0 {
|
||||
// For inlined bucket just update the inline stats
|
||||
s.InlineBucketInuse += used
|
||||
} else {
|
||||
// For non-inlined bucket update all the leaf stats
|
||||
s.LeafPageN++
|
||||
s.LeafInuse += used
|
||||
s.LeafOverflowN += int(p.overflow)
|
||||
|
||||
// Collect stats from sub-buckets.
|
||||
// Do that by iterating over all element headers
|
||||
// looking for the ones with the bucketLeafFlag.
|
||||
for i := uint16(0); i < p.count; i++ {
|
||||
e := p.leafPageElement(i)
|
||||
if (e.flags & bucketLeafFlag) != 0 {
|
||||
// For any bucket element, open the element value
|
||||
// and recursively call Stats on the contained bucket.
|
||||
subStats.Add(b.openBucket(e.value()).Stats())
|
||||
}
|
||||
}
|
||||
}
|
||||
} else if (p.flags & branchPageFlag) != 0 {
|
||||
s.BranchPageN++
|
||||
lastElement := p.branchPageElement(p.count - 1)
|
||||
|
||||
// used totals the used bytes for the page
|
||||
// Add header and all element headers.
|
||||
used := pageHeaderSize + (branchPageElementSize * int(p.count-1))
|
||||
|
||||
// Add size of all keys and values.
|
||||
// Again, use the fact that last element's position equals to
|
||||
// the total of key, value sizes of all previous elements.
|
||||
used += int(lastElement.pos + lastElement.ksize)
|
||||
s.BranchInuse += used
|
||||
s.BranchOverflowN += int(p.overflow)
|
||||
}
|
||||
|
||||
// Keep track of maximum page depth.
|
||||
if depth+1 > s.Depth {
|
||||
s.Depth = (depth + 1)
|
||||
}
|
||||
})
|
||||
|
||||
// Alloc stats can be computed from page counts and pageSize.
|
||||
s.BranchAlloc = (s.BranchPageN + s.BranchOverflowN) * pageSize
|
||||
s.LeafAlloc = (s.LeafPageN + s.LeafOverflowN) * pageSize
|
||||
|
||||
// Add the max depth of sub-buckets to get total nested depth.
|
||||
s.Depth += subStats.Depth
|
||||
// Add the stats for all sub-buckets
|
||||
s.Add(subStats)
|
||||
return s
|
||||
}
|
||||
|
||||
// forEachPage iterates over every page in a bucket, including inline pages.
|
||||
func (b *Bucket) forEachPage(fn func(*page, int)) {
|
||||
// If we have an inline page then just use that.
|
||||
if b.page != nil {
|
||||
fn(b.page, 0)
|
||||
return
|
||||
}
|
||||
|
||||
// Otherwise traverse the page hierarchy.
|
||||
b.tx.forEachPage(b.root, 0, fn)
|
||||
}
|
||||
|
||||
// forEachPageNode iterates over every page (or node) in a bucket.
|
||||
// This also includes inline pages.
|
||||
func (b *Bucket) forEachPageNode(fn func(*page, *node, int)) {
|
||||
// If we have an inline page or root node then just use that.
|
||||
if b.page != nil {
|
||||
fn(b.page, nil, 0)
|
||||
return
|
||||
}
|
||||
b._forEachPageNode(b.root, 0, fn)
|
||||
}
|
||||
|
||||
func (b *Bucket) _forEachPageNode(pgid pgid, depth int, fn func(*page, *node, int)) {
|
||||
var p, n = b.pageNode(pgid)
|
||||
|
||||
// Execute function.
|
||||
fn(p, n, depth)
|
||||
|
||||
// Recursively loop over children.
|
||||
if p != nil {
|
||||
if (p.flags & branchPageFlag) != 0 {
|
||||
for i := 0; i < int(p.count); i++ {
|
||||
elem := p.branchPageElement(uint16(i))
|
||||
b._forEachPageNode(elem.pgid, depth+1, fn)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
if !n.isLeaf {
|
||||
for _, inode := range n.inodes {
|
||||
b._forEachPageNode(inode.pgid, depth+1, fn)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// spill writes all the nodes for this bucket to dirty pages.
|
||||
func (b *Bucket) spill() error {
|
||||
// Spill all child buckets first.
|
||||
for name, child := range b.buckets {
|
||||
// If the child bucket is small enough and it has no child buckets then
|
||||
// write it inline into the parent bucket's page. Otherwise spill it
|
||||
// like a normal bucket and make the parent value a pointer to the page.
|
||||
var value []byte
|
||||
if child.inlineable() {
|
||||
child.free()
|
||||
value = child.write()
|
||||
} else {
|
||||
if err := child.spill(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Update the child bucket header in this bucket.
|
||||
value = make([]byte, unsafe.Sizeof(bucket{}))
|
||||
var bucket = (*bucket)(unsafe.Pointer(&value[0]))
|
||||
*bucket = *child.bucket
|
||||
}
|
||||
|
||||
// Skip writing the bucket if there are no materialized nodes.
|
||||
if child.rootNode == nil {
|
||||
continue
|
||||
}
|
||||
|
||||
// Update parent node.
|
||||
var c = b.Cursor()
|
||||
k, _, flags := c.seek([]byte(name))
|
||||
if !bytes.Equal([]byte(name), k) {
|
||||
panic(fmt.Sprintf("misplaced bucket header: %x -> %x", []byte(name), k))
|
||||
}
|
||||
if flags&bucketLeafFlag == 0 {
|
||||
panic(fmt.Sprintf("unexpected bucket header flag: %x", flags))
|
||||
}
|
||||
c.node().put([]byte(name), []byte(name), value, 0, bucketLeafFlag)
|
||||
}
|
||||
|
||||
// Ignore if there's not a materialized root node.
|
||||
if b.rootNode == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Spill nodes.
|
||||
if err := b.rootNode.spill(); err != nil {
|
||||
return err
|
||||
}
|
||||
b.rootNode = b.rootNode.root()
|
||||
|
||||
// Update the root node for this bucket.
|
||||
if b.rootNode.pgid >= b.tx.meta.pgid {
|
||||
panic(fmt.Sprintf("pgid (%d) above high water mark (%d)", b.rootNode.pgid, b.tx.meta.pgid))
|
||||
}
|
||||
b.root = b.rootNode.pgid
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// inlineable returns true if a bucket is small enough to be written inline
|
||||
// and if it contains no subbuckets. Otherwise returns false.
|
||||
func (b *Bucket) inlineable() bool {
|
||||
var n = b.rootNode
|
||||
|
||||
// Bucket must only contain a single leaf node.
|
||||
if n == nil || !n.isLeaf {
|
||||
return false
|
||||
}
|
||||
|
||||
// Bucket is not inlineable if it contains subbuckets or if it goes beyond
|
||||
// our threshold for inline bucket size.
|
||||
var size = pageHeaderSize
|
||||
for _, inode := range n.inodes {
|
||||
size += leafPageElementSize + len(inode.key) + len(inode.value)
|
||||
|
||||
if inode.flags&bucketLeafFlag != 0 {
|
||||
return false
|
||||
} else if size > b.maxInlineBucketSize() {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// Returns the maximum total size of a bucket to make it a candidate for inlining.
|
||||
func (b *Bucket) maxInlineBucketSize() int {
|
||||
return b.tx.db.pageSize / 4
|
||||
}
|
||||
|
||||
// write allocates and writes a bucket to a byte slice.
|
||||
func (b *Bucket) write() []byte {
|
||||
// Allocate the appropriate size.
|
||||
var n = b.rootNode
|
||||
var value = make([]byte, bucketHeaderSize+n.size())
|
||||
|
||||
// Write a bucket header.
|
||||
var bucket = (*bucket)(unsafe.Pointer(&value[0]))
|
||||
*bucket = *b.bucket
|
||||
|
||||
// Convert byte slice to a fake page and write the root node.
|
||||
var p = (*page)(unsafe.Pointer(&value[bucketHeaderSize]))
|
||||
n.write(p)
|
||||
|
||||
return value
|
||||
}
|
||||
|
||||
// rebalance attempts to balance all nodes.
|
||||
func (b *Bucket) rebalance() {
|
||||
for _, n := range b.nodes {
|
||||
n.rebalance()
|
||||
}
|
||||
for _, child := range b.buckets {
|
||||
child.rebalance()
|
||||
}
|
||||
}
|
||||
|
||||
// node creates a node from a page and associates it with a given parent.
|
||||
func (b *Bucket) node(pgid pgid, parent *node) *node {
|
||||
_assert(b.nodes != nil, "nodes map expected")
|
||||
|
||||
// Retrieve node if it's already been created.
|
||||
if n := b.nodes[pgid]; n != nil {
|
||||
return n
|
||||
}
|
||||
|
||||
// Otherwise create a node and cache it.
|
||||
n := &node{bucket: b, parent: parent}
|
||||
if parent == nil {
|
||||
b.rootNode = n
|
||||
} else {
|
||||
parent.children = append(parent.children, n)
|
||||
}
|
||||
|
||||
// Use the inline page if this is an inline bucket.
|
||||
var p = b.page
|
||||
if p == nil {
|
||||
p = b.tx.page(pgid)
|
||||
}
|
||||
|
||||
// Read the page into the node and cache it.
|
||||
n.read(p)
|
||||
b.nodes[pgid] = n
|
||||
|
||||
// Update statistics.
|
||||
b.tx.stats.NodeCount++
|
||||
|
||||
return n
|
||||
}
|
||||
|
||||
// free recursively frees all pages in the bucket.
|
||||
func (b *Bucket) free() {
|
||||
if b.root == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
var tx = b.tx
|
||||
b.forEachPageNode(func(p *page, n *node, _ int) {
|
||||
if p != nil {
|
||||
tx.db.freelist.free(tx.meta.txid, p)
|
||||
} else {
|
||||
n.free()
|
||||
}
|
||||
})
|
||||
b.root = 0
|
||||
}
|
||||
|
||||
// dereference removes all references to the old mmap.
|
||||
func (b *Bucket) dereference() {
|
||||
if b.rootNode != nil {
|
||||
b.rootNode.root().dereference()
|
||||
}
|
||||
|
||||
for _, child := range b.buckets {
|
||||
child.dereference()
|
||||
}
|
||||
}
|
||||
|
||||
// pageNode returns the in-memory node, if it exists.
|
||||
// Otherwise returns the underlying page.
|
||||
func (b *Bucket) pageNode(id pgid) (*page, *node) {
|
||||
// Inline buckets have a fake page embedded in their value so treat them
|
||||
// differently. We'll return the rootNode (if available) or the fake page.
|
||||
if b.root == 0 {
|
||||
if id != 0 {
|
||||
panic(fmt.Sprintf("inline bucket non-zero page access(2): %d != 0", id))
|
||||
}
|
||||
if b.rootNode != nil {
|
||||
return nil, b.rootNode
|
||||
}
|
||||
return b.page, nil
|
||||
}
|
||||
|
||||
// Check the node cache for non-inline buckets.
|
||||
if b.nodes != nil {
|
||||
if n := b.nodes[id]; n != nil {
|
||||
return nil, n
|
||||
}
|
||||
}
|
||||
|
||||
// Finally lookup the page from the transaction if no node is materialized.
|
||||
return b.tx.page(id), nil
|
||||
}
|
||||
|
||||
// BucketStats records statistics about resources used by a bucket.
|
||||
type BucketStats struct {
|
||||
// Page count statistics.
|
||||
BranchPageN int // number of logical branch pages
|
||||
BranchOverflowN int // number of physical branch overflow pages
|
||||
LeafPageN int // number of logical leaf pages
|
||||
LeafOverflowN int // number of physical leaf overflow pages
|
||||
|
||||
// Tree statistics.
|
||||
KeyN int // number of keys/value pairs
|
||||
Depth int // number of levels in B+tree
|
||||
|
||||
// Page size utilization.
|
||||
BranchAlloc int // bytes allocated for physical branch pages
|
||||
BranchInuse int // bytes actually used for branch data
|
||||
LeafAlloc int // bytes allocated for physical leaf pages
|
||||
LeafInuse int // bytes actually used for leaf data
|
||||
|
||||
// Bucket statistics
|
||||
BucketN int // total number of buckets including the top bucket
|
||||
InlineBucketN int // total number on inlined buckets
|
||||
InlineBucketInuse int // bytes used for inlined buckets (also accounted for in LeafInuse)
|
||||
}
|
||||
|
||||
func (s *BucketStats) Add(other BucketStats) {
|
||||
s.BranchPageN += other.BranchPageN
|
||||
s.BranchOverflowN += other.BranchOverflowN
|
||||
s.LeafPageN += other.LeafPageN
|
||||
s.LeafOverflowN += other.LeafOverflowN
|
||||
s.KeyN += other.KeyN
|
||||
if s.Depth < other.Depth {
|
||||
s.Depth = other.Depth
|
||||
}
|
||||
s.BranchAlloc += other.BranchAlloc
|
||||
s.BranchInuse += other.BranchInuse
|
||||
s.LeafAlloc += other.LeafAlloc
|
||||
s.LeafInuse += other.LeafInuse
|
||||
|
||||
s.BucketN += other.BucketN
|
||||
s.InlineBucketN += other.InlineBucketN
|
||||
s.InlineBucketInuse += other.InlineBucketInuse
|
||||
}
|
||||
|
||||
// cloneBytes returns a copy of a given slice.
|
||||
func cloneBytes(v []byte) []byte {
|
||||
var clone = make([]byte, len(v))
|
||||
copy(clone, v)
|
||||
return clone
|
||||
}
|
1909
vendor/github.com/boltdb/bolt/bucket_test.go
generated
vendored
1909
vendor/github.com/boltdb/bolt/bucket_test.go
generated
vendored
File diff suppressed because it is too large
Load Diff
1740
vendor/github.com/boltdb/bolt/cmd/bolt/main.go
generated
vendored
1740
vendor/github.com/boltdb/bolt/cmd/bolt/main.go
generated
vendored
File diff suppressed because it is too large
Load Diff
356
vendor/github.com/boltdb/bolt/cmd/bolt/main_test.go
generated
vendored
356
vendor/github.com/boltdb/bolt/cmd/bolt/main_test.go
generated
vendored
@ -1,356 +0,0 @@
|
||||
package main_test
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
crypto "crypto/rand"
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"math/rand"
|
||||
"os"
|
||||
"strconv"
|
||||
"testing"
|
||||
|
||||
"github.com/boltdb/bolt"
|
||||
"github.com/boltdb/bolt/cmd/bolt"
|
||||
)
|
||||
|
||||
// Ensure the "info" command can print information about a database.
|
||||
func TestInfoCommand_Run(t *testing.T) {
|
||||
db := MustOpen(0666, nil)
|
||||
db.DB.Close()
|
||||
defer db.Close()
|
||||
|
||||
// Run the info command.
|
||||
m := NewMain()
|
||||
if err := m.Run("info", db.Path); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure the "stats" command executes correctly with an empty database.
|
||||
func TestStatsCommand_Run_EmptyDatabase(t *testing.T) {
|
||||
// Ignore
|
||||
if os.Getpagesize() != 4096 {
|
||||
t.Skip("system does not use 4KB page size")
|
||||
}
|
||||
|
||||
db := MustOpen(0666, nil)
|
||||
defer db.Close()
|
||||
db.DB.Close()
|
||||
|
||||
// Generate expected result.
|
||||
exp := "Aggregate statistics for 0 buckets\n\n" +
|
||||
"Page count statistics\n" +
|
||||
"\tNumber of logical branch pages: 0\n" +
|
||||
"\tNumber of physical branch overflow pages: 0\n" +
|
||||
"\tNumber of logical leaf pages: 0\n" +
|
||||
"\tNumber of physical leaf overflow pages: 0\n" +
|
||||
"Tree statistics\n" +
|
||||
"\tNumber of keys/value pairs: 0\n" +
|
||||
"\tNumber of levels in B+tree: 0\n" +
|
||||
"Page size utilization\n" +
|
||||
"\tBytes allocated for physical branch pages: 0\n" +
|
||||
"\tBytes actually used for branch data: 0 (0%)\n" +
|
||||
"\tBytes allocated for physical leaf pages: 0\n" +
|
||||
"\tBytes actually used for leaf data: 0 (0%)\n" +
|
||||
"Bucket statistics\n" +
|
||||
"\tTotal number of buckets: 0\n" +
|
||||
"\tTotal number on inlined buckets: 0 (0%)\n" +
|
||||
"\tBytes used for inlined buckets: 0 (0%)\n"
|
||||
|
||||
// Run the command.
|
||||
m := NewMain()
|
||||
if err := m.Run("stats", db.Path); err != nil {
|
||||
t.Fatal(err)
|
||||
} else if m.Stdout.String() != exp {
|
||||
t.Fatalf("unexpected stdout:\n\n%s", m.Stdout.String())
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure the "stats" command can execute correctly.
|
||||
func TestStatsCommand_Run(t *testing.T) {
|
||||
// Ignore
|
||||
if os.Getpagesize() != 4096 {
|
||||
t.Skip("system does not use 4KB page size")
|
||||
}
|
||||
|
||||
db := MustOpen(0666, nil)
|
||||
defer db.Close()
|
||||
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
// Create "foo" bucket.
|
||||
b, err := tx.CreateBucket([]byte("foo"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for i := 0; i < 10; i++ {
|
||||
if err := b.Put([]byte(strconv.Itoa(i)), []byte(strconv.Itoa(i))); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Create "bar" bucket.
|
||||
b, err = tx.CreateBucket([]byte("bar"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for i := 0; i < 100; i++ {
|
||||
if err := b.Put([]byte(strconv.Itoa(i)), []byte(strconv.Itoa(i))); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Create "baz" bucket.
|
||||
b, err = tx.CreateBucket([]byte("baz"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := b.Put([]byte("key"), []byte("value")); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
db.DB.Close()
|
||||
|
||||
// Generate expected result.
|
||||
exp := "Aggregate statistics for 3 buckets\n\n" +
|
||||
"Page count statistics\n" +
|
||||
"\tNumber of logical branch pages: 0\n" +
|
||||
"\tNumber of physical branch overflow pages: 0\n" +
|
||||
"\tNumber of logical leaf pages: 1\n" +
|
||||
"\tNumber of physical leaf overflow pages: 0\n" +
|
||||
"Tree statistics\n" +
|
||||
"\tNumber of keys/value pairs: 111\n" +
|
||||
"\tNumber of levels in B+tree: 1\n" +
|
||||
"Page size utilization\n" +
|
||||
"\tBytes allocated for physical branch pages: 0\n" +
|
||||
"\tBytes actually used for branch data: 0 (0%)\n" +
|
||||
"\tBytes allocated for physical leaf pages: 4096\n" +
|
||||
"\tBytes actually used for leaf data: 1996 (48%)\n" +
|
||||
"Bucket statistics\n" +
|
||||
"\tTotal number of buckets: 3\n" +
|
||||
"\tTotal number on inlined buckets: 2 (66%)\n" +
|
||||
"\tBytes used for inlined buckets: 236 (11%)\n"
|
||||
|
||||
// Run the command.
|
||||
m := NewMain()
|
||||
if err := m.Run("stats", db.Path); err != nil {
|
||||
t.Fatal(err)
|
||||
} else if m.Stdout.String() != exp {
|
||||
t.Fatalf("unexpected stdout:\n\n%s", m.Stdout.String())
|
||||
}
|
||||
}
|
||||
|
||||
// Main represents a test wrapper for main.Main that records output.
|
||||
type Main struct {
|
||||
*main.Main
|
||||
Stdin bytes.Buffer
|
||||
Stdout bytes.Buffer
|
||||
Stderr bytes.Buffer
|
||||
}
|
||||
|
||||
// NewMain returns a new instance of Main.
|
||||
func NewMain() *Main {
|
||||
m := &Main{Main: main.NewMain()}
|
||||
m.Main.Stdin = &m.Stdin
|
||||
m.Main.Stdout = &m.Stdout
|
||||
m.Main.Stderr = &m.Stderr
|
||||
return m
|
||||
}
|
||||
|
||||
// MustOpen creates a Bolt database in a temporary location.
|
||||
func MustOpen(mode os.FileMode, options *bolt.Options) *DB {
|
||||
// Create temporary path.
|
||||
f, _ := ioutil.TempFile("", "bolt-")
|
||||
f.Close()
|
||||
os.Remove(f.Name())
|
||||
|
||||
db, err := bolt.Open(f.Name(), mode, options)
|
||||
if err != nil {
|
||||
panic(err.Error())
|
||||
}
|
||||
return &DB{DB: db, Path: f.Name()}
|
||||
}
|
||||
|
||||
// DB is a test wrapper for bolt.DB.
|
||||
type DB struct {
|
||||
*bolt.DB
|
||||
Path string
|
||||
}
|
||||
|
||||
// Close closes and removes the database.
|
||||
func (db *DB) Close() error {
|
||||
defer os.Remove(db.Path)
|
||||
return db.DB.Close()
|
||||
}
|
||||
|
||||
func TestCompactCommand_Run(t *testing.T) {
|
||||
var s int64
|
||||
if err := binary.Read(crypto.Reader, binary.BigEndian, &s); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
rand.Seed(s)
|
||||
|
||||
dstdb := MustOpen(0666, nil)
|
||||
dstdb.Close()
|
||||
|
||||
// fill the db
|
||||
db := MustOpen(0666, nil)
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
n := 2 + rand.Intn(5)
|
||||
for i := 0; i < n; i++ {
|
||||
k := []byte(fmt.Sprintf("b%d", i))
|
||||
b, err := tx.CreateBucketIfNotExists(k)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := b.SetSequence(uint64(i)); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := fillBucket(b, append(k, '.')); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
db.Close()
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// make the db grow by adding large values, and delete them.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucketIfNotExists([]byte("large_vals"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
n := 5 + rand.Intn(5)
|
||||
for i := 0; i < n; i++ {
|
||||
v := make([]byte, 1000*1000*(1+rand.Intn(5)))
|
||||
_, err := crypto.Read(v)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := b.Put([]byte(fmt.Sprintf("l%d", i)), v); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
db.Close()
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
c := tx.Bucket([]byte("large_vals")).Cursor()
|
||||
for k, _ := c.First(); k != nil; k, _ = c.Next() {
|
||||
if err := c.Delete(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return tx.DeleteBucket([]byte("large_vals"))
|
||||
}); err != nil {
|
||||
db.Close()
|
||||
t.Fatal(err)
|
||||
}
|
||||
db.DB.Close()
|
||||
defer db.Close()
|
||||
defer dstdb.Close()
|
||||
|
||||
dbChk, err := chkdb(db.Path)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
m := NewMain()
|
||||
if err := m.Run("compact", "-o", dstdb.Path, db.Path); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
dbChkAfterCompact, err := chkdb(db.Path)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
dstdbChk, err := chkdb(dstdb.Path)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if !bytes.Equal(dbChk, dbChkAfterCompact) {
|
||||
t.Error("the original db has been touched")
|
||||
}
|
||||
if !bytes.Equal(dbChk, dstdbChk) {
|
||||
t.Error("the compacted db data isn't the same than the original db")
|
||||
}
|
||||
}
|
||||
|
||||
func fillBucket(b *bolt.Bucket, prefix []byte) error {
|
||||
n := 10 + rand.Intn(50)
|
||||
for i := 0; i < n; i++ {
|
||||
v := make([]byte, 10*(1+rand.Intn(4)))
|
||||
_, err := crypto.Read(v)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
k := append(prefix, []byte(fmt.Sprintf("k%d", i))...)
|
||||
if err := b.Put(k, v); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
// limit depth of subbuckets
|
||||
s := 2 + rand.Intn(4)
|
||||
if len(prefix) > (2*s + 1) {
|
||||
return nil
|
||||
}
|
||||
n = 1 + rand.Intn(3)
|
||||
for i := 0; i < n; i++ {
|
||||
k := append(prefix, []byte(fmt.Sprintf("b%d", i))...)
|
||||
sb, err := b.CreateBucket(k)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := fillBucket(sb, append(k, '.')); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func chkdb(path string) ([]byte, error) {
|
||||
db, err := bolt.Open(path, 0666, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer db.Close()
|
||||
var buf bytes.Buffer
|
||||
err = db.View(func(tx *bolt.Tx) error {
|
||||
return tx.ForEach(func(name []byte, b *bolt.Bucket) error {
|
||||
return walkBucket(b, name, nil, &buf)
|
||||
})
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return buf.Bytes(), nil
|
||||
}
|
||||
|
||||
func walkBucket(parent *bolt.Bucket, k []byte, v []byte, w io.Writer) error {
|
||||
if _, err := fmt.Fprintf(w, "%d:%x=%x\n", parent.Sequence(), k, v); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// not a bucket, exit.
|
||||
if v != nil {
|
||||
return nil
|
||||
}
|
||||
return parent.ForEach(func(k, v []byte) error {
|
||||
if v == nil {
|
||||
return walkBucket(parent.Bucket(k), k, nil, w)
|
||||
}
|
||||
return walkBucket(parent, k, v, w)
|
||||
})
|
||||
}
|
400
vendor/github.com/boltdb/bolt/cursor.go
generated
vendored
400
vendor/github.com/boltdb/bolt/cursor.go
generated
vendored
@ -1,400 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"sort"
|
||||
)
|
||||
|
||||
// Cursor represents an iterator that can traverse over all key/value pairs in a bucket in sorted order.
|
||||
// Cursors see nested buckets with value == nil.
|
||||
// Cursors can be obtained from a transaction and are valid as long as the transaction is open.
|
||||
//
|
||||
// Keys and values returned from the cursor are only valid for the life of the transaction.
|
||||
//
|
||||
// Changing data while traversing with a cursor may cause it to be invalidated
|
||||
// and return unexpected keys and/or values. You must reposition your cursor
|
||||
// after mutating data.
|
||||
type Cursor struct {
|
||||
bucket *Bucket
|
||||
stack []elemRef
|
||||
}
|
||||
|
||||
// Bucket returns the bucket that this cursor was created from.
|
||||
func (c *Cursor) Bucket() *Bucket {
|
||||
return c.bucket
|
||||
}
|
||||
|
||||
// First moves the cursor to the first item in the bucket and returns its key and value.
|
||||
// If the bucket is empty then a nil key and value are returned.
|
||||
// The returned key and value are only valid for the life of the transaction.
|
||||
func (c *Cursor) First() (key []byte, value []byte) {
|
||||
_assert(c.bucket.tx.db != nil, "tx closed")
|
||||
c.stack = c.stack[:0]
|
||||
p, n := c.bucket.pageNode(c.bucket.root)
|
||||
c.stack = append(c.stack, elemRef{page: p, node: n, index: 0})
|
||||
c.first()
|
||||
|
||||
// If we land on an empty page then move to the next value.
|
||||
// https://github.com/boltdb/bolt/issues/450
|
||||
if c.stack[len(c.stack)-1].count() == 0 {
|
||||
c.next()
|
||||
}
|
||||
|
||||
k, v, flags := c.keyValue()
|
||||
if (flags & uint32(bucketLeafFlag)) != 0 {
|
||||
return k, nil
|
||||
}
|
||||
return k, v
|
||||
|
||||
}
|
||||
|
||||
// Last moves the cursor to the last item in the bucket and returns its key and value.
|
||||
// If the bucket is empty then a nil key and value are returned.
|
||||
// The returned key and value are only valid for the life of the transaction.
|
||||
func (c *Cursor) Last() (key []byte, value []byte) {
|
||||
_assert(c.bucket.tx.db != nil, "tx closed")
|
||||
c.stack = c.stack[:0]
|
||||
p, n := c.bucket.pageNode(c.bucket.root)
|
||||
ref := elemRef{page: p, node: n}
|
||||
ref.index = ref.count() - 1
|
||||
c.stack = append(c.stack, ref)
|
||||
c.last()
|
||||
k, v, flags := c.keyValue()
|
||||
if (flags & uint32(bucketLeafFlag)) != 0 {
|
||||
return k, nil
|
||||
}
|
||||
return k, v
|
||||
}
|
||||
|
||||
// Next moves the cursor to the next item in the bucket and returns its key and value.
|
||||
// If the cursor is at the end of the bucket then a nil key and value are returned.
|
||||
// The returned key and value are only valid for the life of the transaction.
|
||||
func (c *Cursor) Next() (key []byte, value []byte) {
|
||||
_assert(c.bucket.tx.db != nil, "tx closed")
|
||||
k, v, flags := c.next()
|
||||
if (flags & uint32(bucketLeafFlag)) != 0 {
|
||||
return k, nil
|
||||
}
|
||||
return k, v
|
||||
}
|
||||
|
||||
// Prev moves the cursor to the previous item in the bucket and returns its key and value.
|
||||
// If the cursor is at the beginning of the bucket then a nil key and value are returned.
|
||||
// The returned key and value are only valid for the life of the transaction.
|
||||
func (c *Cursor) Prev() (key []byte, value []byte) {
|
||||
_assert(c.bucket.tx.db != nil, "tx closed")
|
||||
|
||||
// Attempt to move back one element until we're successful.
|
||||
// Move up the stack as we hit the beginning of each page in our stack.
|
||||
for i := len(c.stack) - 1; i >= 0; i-- {
|
||||
elem := &c.stack[i]
|
||||
if elem.index > 0 {
|
||||
elem.index--
|
||||
break
|
||||
}
|
||||
c.stack = c.stack[:i]
|
||||
}
|
||||
|
||||
// If we've hit the end then return nil.
|
||||
if len(c.stack) == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
// Move down the stack to find the last element of the last leaf under this branch.
|
||||
c.last()
|
||||
k, v, flags := c.keyValue()
|
||||
if (flags & uint32(bucketLeafFlag)) != 0 {
|
||||
return k, nil
|
||||
}
|
||||
return k, v
|
||||
}
|
||||
|
||||
// Seek moves the cursor to a given key and returns it.
|
||||
// If the key does not exist then the next key is used. If no keys
|
||||
// follow, a nil key is returned.
|
||||
// The returned key and value are only valid for the life of the transaction.
|
||||
func (c *Cursor) Seek(seek []byte) (key []byte, value []byte) {
|
||||
k, v, flags := c.seek(seek)
|
||||
|
||||
// If we ended up after the last element of a page then move to the next one.
|
||||
if ref := &c.stack[len(c.stack)-1]; ref.index >= ref.count() {
|
||||
k, v, flags = c.next()
|
||||
}
|
||||
|
||||
if k == nil {
|
||||
return nil, nil
|
||||
} else if (flags & uint32(bucketLeafFlag)) != 0 {
|
||||
return k, nil
|
||||
}
|
||||
return k, v
|
||||
}
|
||||
|
||||
// Delete removes the current key/value under the cursor from the bucket.
|
||||
// Delete fails if current key/value is a bucket or if the transaction is not writable.
|
||||
func (c *Cursor) Delete() error {
|
||||
if c.bucket.tx.db == nil {
|
||||
return ErrTxClosed
|
||||
} else if !c.bucket.Writable() {
|
||||
return ErrTxNotWritable
|
||||
}
|
||||
|
||||
key, _, flags := c.keyValue()
|
||||
// Return an error if current value is a bucket.
|
||||
if (flags & bucketLeafFlag) != 0 {
|
||||
return ErrIncompatibleValue
|
||||
}
|
||||
c.node().del(key)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// seek moves the cursor to a given key and returns it.
|
||||
// If the key does not exist then the next key is used.
|
||||
func (c *Cursor) seek(seek []byte) (key []byte, value []byte, flags uint32) {
|
||||
_assert(c.bucket.tx.db != nil, "tx closed")
|
||||
|
||||
// Start from root page/node and traverse to correct page.
|
||||
c.stack = c.stack[:0]
|
||||
c.search(seek, c.bucket.root)
|
||||
ref := &c.stack[len(c.stack)-1]
|
||||
|
||||
// If the cursor is pointing to the end of page/node then return nil.
|
||||
if ref.index >= ref.count() {
|
||||
return nil, nil, 0
|
||||
}
|
||||
|
||||
// If this is a bucket then return a nil value.
|
||||
return c.keyValue()
|
||||
}
|
||||
|
||||
// first moves the cursor to the first leaf element under the last page in the stack.
|
||||
func (c *Cursor) first() {
|
||||
for {
|
||||
// Exit when we hit a leaf page.
|
||||
var ref = &c.stack[len(c.stack)-1]
|
||||
if ref.isLeaf() {
|
||||
break
|
||||
}
|
||||
|
||||
// Keep adding pages pointing to the first element to the stack.
|
||||
var pgid pgid
|
||||
if ref.node != nil {
|
||||
pgid = ref.node.inodes[ref.index].pgid
|
||||
} else {
|
||||
pgid = ref.page.branchPageElement(uint16(ref.index)).pgid
|
||||
}
|
||||
p, n := c.bucket.pageNode(pgid)
|
||||
c.stack = append(c.stack, elemRef{page: p, node: n, index: 0})
|
||||
}
|
||||
}
|
||||
|
||||
// last moves the cursor to the last leaf element under the last page in the stack.
|
||||
func (c *Cursor) last() {
|
||||
for {
|
||||
// Exit when we hit a leaf page.
|
||||
ref := &c.stack[len(c.stack)-1]
|
||||
if ref.isLeaf() {
|
||||
break
|
||||
}
|
||||
|
||||
// Keep adding pages pointing to the last element in the stack.
|
||||
var pgid pgid
|
||||
if ref.node != nil {
|
||||
pgid = ref.node.inodes[ref.index].pgid
|
||||
} else {
|
||||
pgid = ref.page.branchPageElement(uint16(ref.index)).pgid
|
||||
}
|
||||
p, n := c.bucket.pageNode(pgid)
|
||||
|
||||
var nextRef = elemRef{page: p, node: n}
|
||||
nextRef.index = nextRef.count() - 1
|
||||
c.stack = append(c.stack, nextRef)
|
||||
}
|
||||
}
|
||||
|
||||
// next moves to the next leaf element and returns the key and value.
|
||||
// If the cursor is at the last leaf element then it stays there and returns nil.
|
||||
func (c *Cursor) next() (key []byte, value []byte, flags uint32) {
|
||||
for {
|
||||
// Attempt to move over one element until we're successful.
|
||||
// Move up the stack as we hit the end of each page in our stack.
|
||||
var i int
|
||||
for i = len(c.stack) - 1; i >= 0; i-- {
|
||||
elem := &c.stack[i]
|
||||
if elem.index < elem.count()-1 {
|
||||
elem.index++
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
// If we've hit the root page then stop and return. This will leave the
|
||||
// cursor on the last element of the last page.
|
||||
if i == -1 {
|
||||
return nil, nil, 0
|
||||
}
|
||||
|
||||
// Otherwise start from where we left off in the stack and find the
|
||||
// first element of the first leaf page.
|
||||
c.stack = c.stack[:i+1]
|
||||
c.first()
|
||||
|
||||
// If this is an empty page then restart and move back up the stack.
|
||||
// https://github.com/boltdb/bolt/issues/450
|
||||
if c.stack[len(c.stack)-1].count() == 0 {
|
||||
continue
|
||||
}
|
||||
|
||||
return c.keyValue()
|
||||
}
|
||||
}
|
||||
|
||||
// search recursively performs a binary search against a given page/node until it finds a given key.
|
||||
func (c *Cursor) search(key []byte, pgid pgid) {
|
||||
p, n := c.bucket.pageNode(pgid)
|
||||
if p != nil && (p.flags&(branchPageFlag|leafPageFlag)) == 0 {
|
||||
panic(fmt.Sprintf("invalid page type: %d: %x", p.id, p.flags))
|
||||
}
|
||||
e := elemRef{page: p, node: n}
|
||||
c.stack = append(c.stack, e)
|
||||
|
||||
// If we're on a leaf page/node then find the specific node.
|
||||
if e.isLeaf() {
|
||||
c.nsearch(key)
|
||||
return
|
||||
}
|
||||
|
||||
if n != nil {
|
||||
c.searchNode(key, n)
|
||||
return
|
||||
}
|
||||
c.searchPage(key, p)
|
||||
}
|
||||
|
||||
func (c *Cursor) searchNode(key []byte, n *node) {
|
||||
var exact bool
|
||||
index := sort.Search(len(n.inodes), func(i int) bool {
|
||||
// TODO(benbjohnson): Optimize this range search. It's a bit hacky right now.
|
||||
// sort.Search() finds the lowest index where f() != -1 but we need the highest index.
|
||||
ret := bytes.Compare(n.inodes[i].key, key)
|
||||
if ret == 0 {
|
||||
exact = true
|
||||
}
|
||||
return ret != -1
|
||||
})
|
||||
if !exact && index > 0 {
|
||||
index--
|
||||
}
|
||||
c.stack[len(c.stack)-1].index = index
|
||||
|
||||
// Recursively search to the next page.
|
||||
c.search(key, n.inodes[index].pgid)
|
||||
}
|
||||
|
||||
func (c *Cursor) searchPage(key []byte, p *page) {
|
||||
// Binary search for the correct range.
|
||||
inodes := p.branchPageElements()
|
||||
|
||||
var exact bool
|
||||
index := sort.Search(int(p.count), func(i int) bool {
|
||||
// TODO(benbjohnson): Optimize this range search. It's a bit hacky right now.
|
||||
// sort.Search() finds the lowest index where f() != -1 but we need the highest index.
|
||||
ret := bytes.Compare(inodes[i].key(), key)
|
||||
if ret == 0 {
|
||||
exact = true
|
||||
}
|
||||
return ret != -1
|
||||
})
|
||||
if !exact && index > 0 {
|
||||
index--
|
||||
}
|
||||
c.stack[len(c.stack)-1].index = index
|
||||
|
||||
// Recursively search to the next page.
|
||||
c.search(key, inodes[index].pgid)
|
||||
}
|
||||
|
||||
// nsearch searches the leaf node on the top of the stack for a key.
|
||||
func (c *Cursor) nsearch(key []byte) {
|
||||
e := &c.stack[len(c.stack)-1]
|
||||
p, n := e.page, e.node
|
||||
|
||||
// If we have a node then search its inodes.
|
||||
if n != nil {
|
||||
index := sort.Search(len(n.inodes), func(i int) bool {
|
||||
return bytes.Compare(n.inodes[i].key, key) != -1
|
||||
})
|
||||
e.index = index
|
||||
return
|
||||
}
|
||||
|
||||
// If we have a page then search its leaf elements.
|
||||
inodes := p.leafPageElements()
|
||||
index := sort.Search(int(p.count), func(i int) bool {
|
||||
return bytes.Compare(inodes[i].key(), key) != -1
|
||||
})
|
||||
e.index = index
|
||||
}
|
||||
|
||||
// keyValue returns the key and value of the current leaf element.
|
||||
func (c *Cursor) keyValue() ([]byte, []byte, uint32) {
|
||||
ref := &c.stack[len(c.stack)-1]
|
||||
if ref.count() == 0 || ref.index >= ref.count() {
|
||||
return nil, nil, 0
|
||||
}
|
||||
|
||||
// Retrieve value from node.
|
||||
if ref.node != nil {
|
||||
inode := &ref.node.inodes[ref.index]
|
||||
return inode.key, inode.value, inode.flags
|
||||
}
|
||||
|
||||
// Or retrieve value from page.
|
||||
elem := ref.page.leafPageElement(uint16(ref.index))
|
||||
return elem.key(), elem.value(), elem.flags
|
||||
}
|
||||
|
||||
// node returns the node that the cursor is currently positioned on.
|
||||
func (c *Cursor) node() *node {
|
||||
_assert(len(c.stack) > 0, "accessing a node with a zero-length cursor stack")
|
||||
|
||||
// If the top of the stack is a leaf node then just return it.
|
||||
if ref := &c.stack[len(c.stack)-1]; ref.node != nil && ref.isLeaf() {
|
||||
return ref.node
|
||||
}
|
||||
|
||||
// Start from root and traverse down the hierarchy.
|
||||
var n = c.stack[0].node
|
||||
if n == nil {
|
||||
n = c.bucket.node(c.stack[0].page.id, nil)
|
||||
}
|
||||
for _, ref := range c.stack[:len(c.stack)-1] {
|
||||
_assert(!n.isLeaf, "expected branch node")
|
||||
n = n.childAt(int(ref.index))
|
||||
}
|
||||
_assert(n.isLeaf, "expected leaf node")
|
||||
return n
|
||||
}
|
||||
|
||||
// elemRef represents a reference to an element on a given page/node.
|
||||
type elemRef struct {
|
||||
page *page
|
||||
node *node
|
||||
index int
|
||||
}
|
||||
|
||||
// isLeaf returns whether the ref is pointing at a leaf page/node.
|
||||
func (r *elemRef) isLeaf() bool {
|
||||
if r.node != nil {
|
||||
return r.node.isLeaf
|
||||
}
|
||||
return (r.page.flags & leafPageFlag) != 0
|
||||
}
|
||||
|
||||
// count returns the number of inodes or page elements.
|
||||
func (r *elemRef) count() int {
|
||||
if r.node != nil {
|
||||
return len(r.node.inodes)
|
||||
}
|
||||
return int(r.page.count)
|
||||
}
|
817
vendor/github.com/boltdb/bolt/cursor_test.go
generated
vendored
817
vendor/github.com/boltdb/bolt/cursor_test.go
generated
vendored
@ -1,817 +0,0 @@
|
||||
package bolt_test
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"log"
|
||||
"os"
|
||||
"reflect"
|
||||
"sort"
|
||||
"testing"
|
||||
"testing/quick"
|
||||
|
||||
"github.com/boltdb/bolt"
|
||||
)
|
||||
|
||||
// Ensure that a cursor can return a reference to the bucket that created it.
|
||||
func TestCursor_Bucket(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if cb := b.Cursor().Bucket(); !reflect.DeepEqual(cb, b) {
|
||||
t.Fatal("cursor bucket mismatch")
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx cursor can seek to the appropriate keys.
|
||||
func TestCursor_Seek(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte("0001")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("bar"), []byte("0002")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("baz"), []byte("0003")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if _, err := b.CreateBucket([]byte("bkt")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
|
||||
// Exact match should go to the key.
|
||||
if k, v := c.Seek([]byte("bar")); !bytes.Equal(k, []byte("bar")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, []byte("0002")) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
// Inexact match should go to the next key.
|
||||
if k, v := c.Seek([]byte("bas")); !bytes.Equal(k, []byte("baz")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, []byte("0003")) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
// Low key should go to the first key.
|
||||
if k, v := c.Seek([]byte("")); !bytes.Equal(k, []byte("bar")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, []byte("0002")) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
// High key should return no key.
|
||||
if k, v := c.Seek([]byte("zzz")); k != nil {
|
||||
t.Fatalf("expected nil key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("expected nil value: %v", v)
|
||||
}
|
||||
|
||||
// Buckets should return their key but no value.
|
||||
if k, v := c.Seek([]byte("bkt")); !bytes.Equal(k, []byte("bkt")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("expected nil value: %v", v)
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestCursor_Delete(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
const count = 1000
|
||||
|
||||
// Insert every other key between 0 and $count.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
for i := 0; i < count; i += 1 {
|
||||
k := make([]byte, 8)
|
||||
binary.BigEndian.PutUint64(k, uint64(i))
|
||||
if err := b.Put(k, make([]byte, 100)); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
if _, err := b.CreateBucket([]byte("sub")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
bound := make([]byte, 8)
|
||||
binary.BigEndian.PutUint64(bound, uint64(count/2))
|
||||
for key, _ := c.First(); bytes.Compare(key, bound) < 0; key, _ = c.Next() {
|
||||
if err := c.Delete(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
c.Seek([]byte("sub"))
|
||||
if err := c.Delete(); err != bolt.ErrIncompatibleValue {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
stats := tx.Bucket([]byte("widgets")).Stats()
|
||||
if stats.KeyN != count/2+1 {
|
||||
t.Fatalf("unexpected KeyN: %d", stats.KeyN)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx cursor can seek to the appropriate keys when there are a
|
||||
// large number of keys. This test also checks that seek will always move
|
||||
// forward to the next key.
|
||||
//
|
||||
// Related: https://github.com/boltdb/bolt/pull/187
|
||||
func TestCursor_Seek_Large(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
var count = 10000
|
||||
|
||||
// Insert every other key between 0 and $count.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
for i := 0; i < count; i += 100 {
|
||||
for j := i; j < i+100; j += 2 {
|
||||
k := make([]byte, 8)
|
||||
binary.BigEndian.PutUint64(k, uint64(j))
|
||||
if err := b.Put(k, make([]byte, 100)); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
for i := 0; i < count; i++ {
|
||||
seek := make([]byte, 8)
|
||||
binary.BigEndian.PutUint64(seek, uint64(i))
|
||||
|
||||
k, _ := c.Seek(seek)
|
||||
|
||||
// The last seek is beyond the end of the the range so
|
||||
// it should return nil.
|
||||
if i == count-1 {
|
||||
if k != nil {
|
||||
t.Fatal("expected nil key")
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
// Otherwise we should seek to the exact key or the next key.
|
||||
num := binary.BigEndian.Uint64(k)
|
||||
if i%2 == 0 {
|
||||
if num != uint64(i) {
|
||||
t.Fatalf("unexpected num: %d", num)
|
||||
}
|
||||
} else {
|
||||
if num != uint64(i+1) {
|
||||
t.Fatalf("unexpected num: %d", num)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a cursor can iterate over an empty bucket without error.
|
||||
func TestCursor_EmptyBucket(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
_, err := tx.CreateBucket([]byte("widgets"))
|
||||
return err
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
k, v := c.First()
|
||||
if k != nil {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx cursor can reverse iterate over an empty bucket without error.
|
||||
func TestCursor_EmptyBucketReverse(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
_, err := tx.CreateBucket([]byte("widgets"))
|
||||
return err
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
k, v := c.Last()
|
||||
if k != nil {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx cursor can iterate over a single root with a couple elements.
|
||||
func TestCursor_Iterate_Leaf(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("baz"), []byte{}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte{0}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("bar"), []byte{1}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
tx, err := db.Begin(false)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer func() { _ = tx.Rollback() }()
|
||||
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
|
||||
k, v := c.First()
|
||||
if !bytes.Equal(k, []byte("bar")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, []byte{1}) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
k, v = c.Next()
|
||||
if !bytes.Equal(k, []byte("baz")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, []byte{}) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
k, v = c.Next()
|
||||
if !bytes.Equal(k, []byte("foo")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, []byte{0}) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
k, v = c.Next()
|
||||
if k != nil {
|
||||
t.Fatalf("expected nil key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("expected nil value: %v", v)
|
||||
}
|
||||
|
||||
k, v = c.Next()
|
||||
if k != nil {
|
||||
t.Fatalf("expected nil key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("expected nil value: %v", v)
|
||||
}
|
||||
|
||||
if err := tx.Rollback(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx cursor can iterate in reverse over a single root with a couple elements.
|
||||
func TestCursor_LeafRootReverse(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("baz"), []byte{}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte{0}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("bar"), []byte{1}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
tx, err := db.Begin(false)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
|
||||
if k, v := c.Last(); !bytes.Equal(k, []byte("foo")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, []byte{0}) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
if k, v := c.Prev(); !bytes.Equal(k, []byte("baz")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, []byte{}) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
if k, v := c.Prev(); !bytes.Equal(k, []byte("bar")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, []byte{1}) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
if k, v := c.Prev(); k != nil {
|
||||
t.Fatalf("expected nil key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("expected nil value: %v", v)
|
||||
}
|
||||
|
||||
if k, v := c.Prev(); k != nil {
|
||||
t.Fatalf("expected nil key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("expected nil value: %v", v)
|
||||
}
|
||||
|
||||
if err := tx.Rollback(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx cursor can restart from the beginning.
|
||||
func TestCursor_Restart(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("bar"), []byte{}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte{}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
tx, err := db.Begin(false)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
|
||||
if k, _ := c.First(); !bytes.Equal(k, []byte("bar")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
}
|
||||
if k, _ := c.Next(); !bytes.Equal(k, []byte("foo")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
}
|
||||
|
||||
if k, _ := c.First(); !bytes.Equal(k, []byte("bar")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
}
|
||||
if k, _ := c.Next(); !bytes.Equal(k, []byte("foo")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
}
|
||||
|
||||
if err := tx.Rollback(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a cursor can skip over empty pages that have been deleted.
|
||||
func TestCursor_First_EmptyPages(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
// Create 1000 keys in the "widgets" bucket.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
for i := 0; i < 1000; i++ {
|
||||
if err := b.Put(u64tob(uint64(i)), []byte{}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// Delete half the keys and then try to iterate.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b := tx.Bucket([]byte("widgets"))
|
||||
for i := 0; i < 600; i++ {
|
||||
if err := b.Delete(u64tob(uint64(i))); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
c := b.Cursor()
|
||||
var n int
|
||||
for k, _ := c.First(); k != nil; k, _ = c.Next() {
|
||||
n++
|
||||
}
|
||||
if n != 400 {
|
||||
t.Fatalf("unexpected key count: %d", n)
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx can iterate over all elements in a bucket.
|
||||
func TestCursor_QuickCheck(t *testing.T) {
|
||||
f := func(items testdata) bool {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
// Bulk insert all values.
|
||||
tx, err := db.Begin(true)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
for _, item := range items {
|
||||
if err := b.Put(item.Key, item.Value); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
if err := tx.Commit(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// Sort test data.
|
||||
sort.Sort(items)
|
||||
|
||||
// Iterate over all items and check consistency.
|
||||
var index = 0
|
||||
tx, err = db.Begin(false)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
for k, v := c.First(); k != nil && index < len(items); k, v = c.Next() {
|
||||
if !bytes.Equal(k, items[index].Key) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, items[index].Value) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
index++
|
||||
}
|
||||
if len(items) != index {
|
||||
t.Fatalf("unexpected item count: %v, expected %v", len(items), index)
|
||||
}
|
||||
|
||||
if err := tx.Rollback(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
if err := quick.Check(f, qconfig()); err != nil {
|
||||
t.Error(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a transaction can iterate over all elements in a bucket in reverse.
|
||||
func TestCursor_QuickCheck_Reverse(t *testing.T) {
|
||||
f := func(items testdata) bool {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
// Bulk insert all values.
|
||||
tx, err := db.Begin(true)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
for _, item := range items {
|
||||
if err := b.Put(item.Key, item.Value); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
if err := tx.Commit(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// Sort test data.
|
||||
sort.Sort(revtestdata(items))
|
||||
|
||||
// Iterate over all items and check consistency.
|
||||
var index = 0
|
||||
tx, err = db.Begin(false)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
for k, v := c.Last(); k != nil && index < len(items); k, v = c.Prev() {
|
||||
if !bytes.Equal(k, items[index].Key) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if !bytes.Equal(v, items[index].Value) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
index++
|
||||
}
|
||||
if len(items) != index {
|
||||
t.Fatalf("unexpected item count: %v, expected %v", len(items), index)
|
||||
}
|
||||
|
||||
if err := tx.Rollback(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
if err := quick.Check(f, qconfig()); err != nil {
|
||||
t.Error(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx cursor can iterate over subbuckets.
|
||||
func TestCursor_QuickCheck_BucketsOnly(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if _, err := b.CreateBucket([]byte("foo")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if _, err := b.CreateBucket([]byte("bar")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if _, err := b.CreateBucket([]byte("baz")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
var names []string
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
for k, v := c.First(); k != nil; k, v = c.Next() {
|
||||
names = append(names, string(k))
|
||||
if v != nil {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
}
|
||||
if !reflect.DeepEqual(names, []string{"bar", "baz", "foo"}) {
|
||||
t.Fatalf("unexpected names: %+v", names)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx cursor can reverse iterate over subbuckets.
|
||||
func TestCursor_QuickCheck_BucketsOnly_Reverse(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if _, err := b.CreateBucket([]byte("foo")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if _, err := b.CreateBucket([]byte("bar")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if _, err := b.CreateBucket([]byte("baz")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
var names []string
|
||||
c := tx.Bucket([]byte("widgets")).Cursor()
|
||||
for k, v := c.Last(); k != nil; k, v = c.Prev() {
|
||||
names = append(names, string(k))
|
||||
if v != nil {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
}
|
||||
if !reflect.DeepEqual(names, []string{"foo", "baz", "bar"}) {
|
||||
t.Fatalf("unexpected names: %+v", names)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
func ExampleCursor() {
|
||||
// Open the database.
|
||||
db, err := bolt.Open(tempfile(), 0666, nil)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
defer os.Remove(db.Path())
|
||||
|
||||
// Start a read-write transaction.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
// Create a new bucket.
|
||||
b, err := tx.CreateBucket([]byte("animals"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Insert data into a bucket.
|
||||
if err := b.Put([]byte("dog"), []byte("fun")); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("cat"), []byte("lame")); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("liger"), []byte("awesome")); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Create a cursor for iteration.
|
||||
c := b.Cursor()
|
||||
|
||||
// Iterate over items in sorted key order. This starts from the
|
||||
// first key/value pair and updates the k/v variables to the
|
||||
// next key/value on each iteration.
|
||||
//
|
||||
// The loop finishes at the end of the cursor when a nil key is returned.
|
||||
for k, v := c.First(); k != nil; k, v = c.Next() {
|
||||
fmt.Printf("A %s is %s.\n", k, v)
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.Close(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Output:
|
||||
// A cat is lame.
|
||||
// A dog is fun.
|
||||
// A liger is awesome.
|
||||
}
|
||||
|
||||
func ExampleCursor_reverse() {
|
||||
// Open the database.
|
||||
db, err := bolt.Open(tempfile(), 0666, nil)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
defer os.Remove(db.Path())
|
||||
|
||||
// Start a read-write transaction.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
// Create a new bucket.
|
||||
b, err := tx.CreateBucket([]byte("animals"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Insert data into a bucket.
|
||||
if err := b.Put([]byte("dog"), []byte("fun")); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("cat"), []byte("lame")); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("liger"), []byte("awesome")); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Create a cursor for iteration.
|
||||
c := b.Cursor()
|
||||
|
||||
// Iterate over items in reverse sorted key order. This starts
|
||||
// from the last key/value pair and updates the k/v variables to
|
||||
// the previous key/value on each iteration.
|
||||
//
|
||||
// The loop finishes at the beginning of the cursor when a nil key
|
||||
// is returned.
|
||||
for k, v := c.Last(); k != nil; k, v = c.Prev() {
|
||||
fmt.Printf("A %s is %s.\n", k, v)
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Close the database to release the file lock.
|
||||
if err := db.Close(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Output:
|
||||
// A liger is awesome.
|
||||
// A dog is fun.
|
||||
// A cat is lame.
|
||||
}
|
1039
vendor/github.com/boltdb/bolt/db.go
generated
vendored
1039
vendor/github.com/boltdb/bolt/db.go
generated
vendored
File diff suppressed because it is too large
Load Diff
1545
vendor/github.com/boltdb/bolt/db_test.go
generated
vendored
1545
vendor/github.com/boltdb/bolt/db_test.go
generated
vendored
File diff suppressed because it is too large
Load Diff
44
vendor/github.com/boltdb/bolt/doc.go
generated
vendored
44
vendor/github.com/boltdb/bolt/doc.go
generated
vendored
@ -1,44 +0,0 @@
|
||||
/*
|
||||
Package bolt implements a low-level key/value store in pure Go. It supports
|
||||
fully serializable transactions, ACID semantics, and lock-free MVCC with
|
||||
multiple readers and a single writer. Bolt can be used for projects that
|
||||
want a simple data store without the need to add large dependencies such as
|
||||
Postgres or MySQL.
|
||||
|
||||
Bolt is a single-level, zero-copy, B+tree data store. This means that Bolt is
|
||||
optimized for fast read access and does not require recovery in the event of a
|
||||
system crash. Transactions which have not finished committing will simply be
|
||||
rolled back in the event of a crash.
|
||||
|
||||
The design of Bolt is based on Howard Chu's LMDB database project.
|
||||
|
||||
Bolt currently works on Windows, Mac OS X, and Linux.
|
||||
|
||||
|
||||
Basics
|
||||
|
||||
There are only a few types in Bolt: DB, Bucket, Tx, and Cursor. The DB is
|
||||
a collection of buckets and is represented by a single file on disk. A bucket is
|
||||
a collection of unique keys that are associated with values.
|
||||
|
||||
Transactions provide either read-only or read-write access to the database.
|
||||
Read-only transactions can retrieve key/value pairs and can use Cursors to
|
||||
iterate over the dataset sequentially. Read-write transactions can create and
|
||||
delete buckets and can insert and remove keys. Only one read-write transaction
|
||||
is allowed at a time.
|
||||
|
||||
|
||||
Caveats
|
||||
|
||||
The database uses a read-only, memory-mapped data file to ensure that
|
||||
applications cannot corrupt the database, however, this means that keys and
|
||||
values returned from Bolt cannot be changed. Writing to a read-only byte slice
|
||||
will cause Go to panic.
|
||||
|
||||
Keys and values retrieved from the database are only valid for the life of
|
||||
the transaction. When used outside the transaction, these byte slices can
|
||||
point to different data or can point to invalid memory which will cause a panic.
|
||||
|
||||
|
||||
*/
|
||||
package bolt
|
71
vendor/github.com/boltdb/bolt/errors.go
generated
vendored
71
vendor/github.com/boltdb/bolt/errors.go
generated
vendored
@ -1,71 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import "errors"
|
||||
|
||||
// These errors can be returned when opening or calling methods on a DB.
|
||||
var (
|
||||
// ErrDatabaseNotOpen is returned when a DB instance is accessed before it
|
||||
// is opened or after it is closed.
|
||||
ErrDatabaseNotOpen = errors.New("database not open")
|
||||
|
||||
// ErrDatabaseOpen is returned when opening a database that is
|
||||
// already open.
|
||||
ErrDatabaseOpen = errors.New("database already open")
|
||||
|
||||
// ErrInvalid is returned when both meta pages on a database are invalid.
|
||||
// This typically occurs when a file is not a bolt database.
|
||||
ErrInvalid = errors.New("invalid database")
|
||||
|
||||
// ErrVersionMismatch is returned when the data file was created with a
|
||||
// different version of Bolt.
|
||||
ErrVersionMismatch = errors.New("version mismatch")
|
||||
|
||||
// ErrChecksum is returned when either meta page checksum does not match.
|
||||
ErrChecksum = errors.New("checksum error")
|
||||
|
||||
// ErrTimeout is returned when a database cannot obtain an exclusive lock
|
||||
// on the data file after the timeout passed to Open().
|
||||
ErrTimeout = errors.New("timeout")
|
||||
)
|
||||
|
||||
// These errors can occur when beginning or committing a Tx.
|
||||
var (
|
||||
// ErrTxNotWritable is returned when performing a write operation on a
|
||||
// read-only transaction.
|
||||
ErrTxNotWritable = errors.New("tx not writable")
|
||||
|
||||
// ErrTxClosed is returned when committing or rolling back a transaction
|
||||
// that has already been committed or rolled back.
|
||||
ErrTxClosed = errors.New("tx closed")
|
||||
|
||||
// ErrDatabaseReadOnly is returned when a mutating transaction is started on a
|
||||
// read-only database.
|
||||
ErrDatabaseReadOnly = errors.New("database is in read-only mode")
|
||||
)
|
||||
|
||||
// These errors can occur when putting or deleting a value or a bucket.
|
||||
var (
|
||||
// ErrBucketNotFound is returned when trying to access a bucket that has
|
||||
// not been created yet.
|
||||
ErrBucketNotFound = errors.New("bucket not found")
|
||||
|
||||
// ErrBucketExists is returned when creating a bucket that already exists.
|
||||
ErrBucketExists = errors.New("bucket already exists")
|
||||
|
||||
// ErrBucketNameRequired is returned when creating a bucket with a blank name.
|
||||
ErrBucketNameRequired = errors.New("bucket name required")
|
||||
|
||||
// ErrKeyRequired is returned when inserting a zero-length key.
|
||||
ErrKeyRequired = errors.New("key required")
|
||||
|
||||
// ErrKeyTooLarge is returned when inserting a key that is larger than MaxKeySize.
|
||||
ErrKeyTooLarge = errors.New("key too large")
|
||||
|
||||
// ErrValueTooLarge is returned when inserting a value that is larger than MaxValueSize.
|
||||
ErrValueTooLarge = errors.New("value too large")
|
||||
|
||||
// ErrIncompatibleValue is returned when trying create or delete a bucket
|
||||
// on an existing non-bucket key or when trying to create or delete a
|
||||
// non-bucket key on an existing bucket key.
|
||||
ErrIncompatibleValue = errors.New("incompatible value")
|
||||
)
|
252
vendor/github.com/boltdb/bolt/freelist.go
generated
vendored
252
vendor/github.com/boltdb/bolt/freelist.go
generated
vendored
@ -1,252 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"sort"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// freelist represents a list of all pages that are available for allocation.
|
||||
// It also tracks pages that have been freed but are still in use by open transactions.
|
||||
type freelist struct {
|
||||
ids []pgid // all free and available free page ids.
|
||||
pending map[txid][]pgid // mapping of soon-to-be free page ids by tx.
|
||||
cache map[pgid]bool // fast lookup of all free and pending page ids.
|
||||
}
|
||||
|
||||
// newFreelist returns an empty, initialized freelist.
|
||||
func newFreelist() *freelist {
|
||||
return &freelist{
|
||||
pending: make(map[txid][]pgid),
|
||||
cache: make(map[pgid]bool),
|
||||
}
|
||||
}
|
||||
|
||||
// size returns the size of the page after serialization.
|
||||
func (f *freelist) size() int {
|
||||
n := f.count()
|
||||
if n >= 0xFFFF {
|
||||
// The first element will be used to store the count. See freelist.write.
|
||||
n++
|
||||
}
|
||||
return pageHeaderSize + (int(unsafe.Sizeof(pgid(0))) * n)
|
||||
}
|
||||
|
||||
// count returns count of pages on the freelist
|
||||
func (f *freelist) count() int {
|
||||
return f.free_count() + f.pending_count()
|
||||
}
|
||||
|
||||
// free_count returns count of free pages
|
||||
func (f *freelist) free_count() int {
|
||||
return len(f.ids)
|
||||
}
|
||||
|
||||
// pending_count returns count of pending pages
|
||||
func (f *freelist) pending_count() int {
|
||||
var count int
|
||||
for _, list := range f.pending {
|
||||
count += len(list)
|
||||
}
|
||||
return count
|
||||
}
|
||||
|
||||
// copyall copies into dst a list of all free ids and all pending ids in one sorted list.
|
||||
// f.count returns the minimum length required for dst.
|
||||
func (f *freelist) copyall(dst []pgid) {
|
||||
m := make(pgids, 0, f.pending_count())
|
||||
for _, list := range f.pending {
|
||||
m = append(m, list...)
|
||||
}
|
||||
sort.Sort(m)
|
||||
mergepgids(dst, f.ids, m)
|
||||
}
|
||||
|
||||
// allocate returns the starting page id of a contiguous list of pages of a given size.
|
||||
// If a contiguous block cannot be found then 0 is returned.
|
||||
func (f *freelist) allocate(n int) pgid {
|
||||
if len(f.ids) == 0 {
|
||||
return 0
|
||||
}
|
||||
|
||||
var initial, previd pgid
|
||||
for i, id := range f.ids {
|
||||
if id <= 1 {
|
||||
panic(fmt.Sprintf("invalid page allocation: %d", id))
|
||||
}
|
||||
|
||||
// Reset initial page if this is not contiguous.
|
||||
if previd == 0 || id-previd != 1 {
|
||||
initial = id
|
||||
}
|
||||
|
||||
// If we found a contiguous block then remove it and return it.
|
||||
if (id-initial)+1 == pgid(n) {
|
||||
// If we're allocating off the beginning then take the fast path
|
||||
// and just adjust the existing slice. This will use extra memory
|
||||
// temporarily but the append() in free() will realloc the slice
|
||||
// as is necessary.
|
||||
if (i + 1) == n {
|
||||
f.ids = f.ids[i+1:]
|
||||
} else {
|
||||
copy(f.ids[i-n+1:], f.ids[i+1:])
|
||||
f.ids = f.ids[:len(f.ids)-n]
|
||||
}
|
||||
|
||||
// Remove from the free cache.
|
||||
for i := pgid(0); i < pgid(n); i++ {
|
||||
delete(f.cache, initial+i)
|
||||
}
|
||||
|
||||
return initial
|
||||
}
|
||||
|
||||
previd = id
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
// free releases a page and its overflow for a given transaction id.
|
||||
// If the page is already free then a panic will occur.
|
||||
func (f *freelist) free(txid txid, p *page) {
|
||||
if p.id <= 1 {
|
||||
panic(fmt.Sprintf("cannot free page 0 or 1: %d", p.id))
|
||||
}
|
||||
|
||||
// Free page and all its overflow pages.
|
||||
var ids = f.pending[txid]
|
||||
for id := p.id; id <= p.id+pgid(p.overflow); id++ {
|
||||
// Verify that page is not already free.
|
||||
if f.cache[id] {
|
||||
panic(fmt.Sprintf("page %d already freed", id))
|
||||
}
|
||||
|
||||
// Add to the freelist and cache.
|
||||
ids = append(ids, id)
|
||||
f.cache[id] = true
|
||||
}
|
||||
f.pending[txid] = ids
|
||||
}
|
||||
|
||||
// release moves all page ids for a transaction id (or older) to the freelist.
|
||||
func (f *freelist) release(txid txid) {
|
||||
m := make(pgids, 0)
|
||||
for tid, ids := range f.pending {
|
||||
if tid <= txid {
|
||||
// Move transaction's pending pages to the available freelist.
|
||||
// Don't remove from the cache since the page is still free.
|
||||
m = append(m, ids...)
|
||||
delete(f.pending, tid)
|
||||
}
|
||||
}
|
||||
sort.Sort(m)
|
||||
f.ids = pgids(f.ids).merge(m)
|
||||
}
|
||||
|
||||
// rollback removes the pages from a given pending tx.
|
||||
func (f *freelist) rollback(txid txid) {
|
||||
// Remove page ids from cache.
|
||||
for _, id := range f.pending[txid] {
|
||||
delete(f.cache, id)
|
||||
}
|
||||
|
||||
// Remove pages from pending list.
|
||||
delete(f.pending, txid)
|
||||
}
|
||||
|
||||
// freed returns whether a given page is in the free list.
|
||||
func (f *freelist) freed(pgid pgid) bool {
|
||||
return f.cache[pgid]
|
||||
}
|
||||
|
||||
// read initializes the freelist from a freelist page.
|
||||
func (f *freelist) read(p *page) {
|
||||
// If the page.count is at the max uint16 value (64k) then it's considered
|
||||
// an overflow and the size of the freelist is stored as the first element.
|
||||
idx, count := 0, int(p.count)
|
||||
if count == 0xFFFF {
|
||||
idx = 1
|
||||
count = int(((*[maxAllocSize]pgid)(unsafe.Pointer(&p.ptr)))[0])
|
||||
}
|
||||
|
||||
// Copy the list of page ids from the freelist.
|
||||
if count == 0 {
|
||||
f.ids = nil
|
||||
} else {
|
||||
ids := ((*[maxAllocSize]pgid)(unsafe.Pointer(&p.ptr)))[idx:count]
|
||||
f.ids = make([]pgid, len(ids))
|
||||
copy(f.ids, ids)
|
||||
|
||||
// Make sure they're sorted.
|
||||
sort.Sort(pgids(f.ids))
|
||||
}
|
||||
|
||||
// Rebuild the page cache.
|
||||
f.reindex()
|
||||
}
|
||||
|
||||
// write writes the page ids onto a freelist page. All free and pending ids are
|
||||
// saved to disk since in the event of a program crash, all pending ids will
|
||||
// become free.
|
||||
func (f *freelist) write(p *page) error {
|
||||
// Combine the old free pgids and pgids waiting on an open transaction.
|
||||
|
||||
// Update the header flag.
|
||||
p.flags |= freelistPageFlag
|
||||
|
||||
// The page.count can only hold up to 64k elements so if we overflow that
|
||||
// number then we handle it by putting the size in the first element.
|
||||
lenids := f.count()
|
||||
if lenids == 0 {
|
||||
p.count = uint16(lenids)
|
||||
} else if lenids < 0xFFFF {
|
||||
p.count = uint16(lenids)
|
||||
f.copyall(((*[maxAllocSize]pgid)(unsafe.Pointer(&p.ptr)))[:])
|
||||
} else {
|
||||
p.count = 0xFFFF
|
||||
((*[maxAllocSize]pgid)(unsafe.Pointer(&p.ptr)))[0] = pgid(lenids)
|
||||
f.copyall(((*[maxAllocSize]pgid)(unsafe.Pointer(&p.ptr)))[1:])
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// reload reads the freelist from a page and filters out pending items.
|
||||
func (f *freelist) reload(p *page) {
|
||||
f.read(p)
|
||||
|
||||
// Build a cache of only pending pages.
|
||||
pcache := make(map[pgid]bool)
|
||||
for _, pendingIDs := range f.pending {
|
||||
for _, pendingID := range pendingIDs {
|
||||
pcache[pendingID] = true
|
||||
}
|
||||
}
|
||||
|
||||
// Check each page in the freelist and build a new available freelist
|
||||
// with any pages not in the pending lists.
|
||||
var a []pgid
|
||||
for _, id := range f.ids {
|
||||
if !pcache[id] {
|
||||
a = append(a, id)
|
||||
}
|
||||
}
|
||||
f.ids = a
|
||||
|
||||
// Once the available list is rebuilt then rebuild the free cache so that
|
||||
// it includes the available and pending free pages.
|
||||
f.reindex()
|
||||
}
|
||||
|
||||
// reindex rebuilds the free cache based on available and pending free lists.
|
||||
func (f *freelist) reindex() {
|
||||
f.cache = make(map[pgid]bool, len(f.ids))
|
||||
for _, id := range f.ids {
|
||||
f.cache[id] = true
|
||||
}
|
||||
for _, pendingIDs := range f.pending {
|
||||
for _, pendingID := range pendingIDs {
|
||||
f.cache[pendingID] = true
|
||||
}
|
||||
}
|
||||
}
|
158
vendor/github.com/boltdb/bolt/freelist_test.go
generated
vendored
158
vendor/github.com/boltdb/bolt/freelist_test.go
generated
vendored
@ -1,158 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"math/rand"
|
||||
"reflect"
|
||||
"sort"
|
||||
"testing"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// Ensure that a page is added to a transaction's freelist.
|
||||
func TestFreelist_free(t *testing.T) {
|
||||
f := newFreelist()
|
||||
f.free(100, &page{id: 12})
|
||||
if !reflect.DeepEqual([]pgid{12}, f.pending[100]) {
|
||||
t.Fatalf("exp=%v; got=%v", []pgid{12}, f.pending[100])
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a page and its overflow is added to a transaction's freelist.
|
||||
func TestFreelist_free_overflow(t *testing.T) {
|
||||
f := newFreelist()
|
||||
f.free(100, &page{id: 12, overflow: 3})
|
||||
if exp := []pgid{12, 13, 14, 15}; !reflect.DeepEqual(exp, f.pending[100]) {
|
||||
t.Fatalf("exp=%v; got=%v", exp, f.pending[100])
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a transaction's free pages can be released.
|
||||
func TestFreelist_release(t *testing.T) {
|
||||
f := newFreelist()
|
||||
f.free(100, &page{id: 12, overflow: 1})
|
||||
f.free(100, &page{id: 9})
|
||||
f.free(102, &page{id: 39})
|
||||
f.release(100)
|
||||
f.release(101)
|
||||
if exp := []pgid{9, 12, 13}; !reflect.DeepEqual(exp, f.ids) {
|
||||
t.Fatalf("exp=%v; got=%v", exp, f.ids)
|
||||
}
|
||||
|
||||
f.release(102)
|
||||
if exp := []pgid{9, 12, 13, 39}; !reflect.DeepEqual(exp, f.ids) {
|
||||
t.Fatalf("exp=%v; got=%v", exp, f.ids)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a freelist can find contiguous blocks of pages.
|
||||
func TestFreelist_allocate(t *testing.T) {
|
||||
f := &freelist{ids: []pgid{3, 4, 5, 6, 7, 9, 12, 13, 18}}
|
||||
if id := int(f.allocate(3)); id != 3 {
|
||||
t.Fatalf("exp=3; got=%v", id)
|
||||
}
|
||||
if id := int(f.allocate(1)); id != 6 {
|
||||
t.Fatalf("exp=6; got=%v", id)
|
||||
}
|
||||
if id := int(f.allocate(3)); id != 0 {
|
||||
t.Fatalf("exp=0; got=%v", id)
|
||||
}
|
||||
if id := int(f.allocate(2)); id != 12 {
|
||||
t.Fatalf("exp=12; got=%v", id)
|
||||
}
|
||||
if id := int(f.allocate(1)); id != 7 {
|
||||
t.Fatalf("exp=7; got=%v", id)
|
||||
}
|
||||
if id := int(f.allocate(0)); id != 0 {
|
||||
t.Fatalf("exp=0; got=%v", id)
|
||||
}
|
||||
if id := int(f.allocate(0)); id != 0 {
|
||||
t.Fatalf("exp=0; got=%v", id)
|
||||
}
|
||||
if exp := []pgid{9, 18}; !reflect.DeepEqual(exp, f.ids) {
|
||||
t.Fatalf("exp=%v; got=%v", exp, f.ids)
|
||||
}
|
||||
|
||||
if id := int(f.allocate(1)); id != 9 {
|
||||
t.Fatalf("exp=9; got=%v", id)
|
||||
}
|
||||
if id := int(f.allocate(1)); id != 18 {
|
||||
t.Fatalf("exp=18; got=%v", id)
|
||||
}
|
||||
if id := int(f.allocate(1)); id != 0 {
|
||||
t.Fatalf("exp=0; got=%v", id)
|
||||
}
|
||||
if exp := []pgid{}; !reflect.DeepEqual(exp, f.ids) {
|
||||
t.Fatalf("exp=%v; got=%v", exp, f.ids)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a freelist can deserialize from a freelist page.
|
||||
func TestFreelist_read(t *testing.T) {
|
||||
// Create a page.
|
||||
var buf [4096]byte
|
||||
page := (*page)(unsafe.Pointer(&buf[0]))
|
||||
page.flags = freelistPageFlag
|
||||
page.count = 2
|
||||
|
||||
// Insert 2 page ids.
|
||||
ids := (*[3]pgid)(unsafe.Pointer(&page.ptr))
|
||||
ids[0] = 23
|
||||
ids[1] = 50
|
||||
|
||||
// Deserialize page into a freelist.
|
||||
f := newFreelist()
|
||||
f.read(page)
|
||||
|
||||
// Ensure that there are two page ids in the freelist.
|
||||
if exp := []pgid{23, 50}; !reflect.DeepEqual(exp, f.ids) {
|
||||
t.Fatalf("exp=%v; got=%v", exp, f.ids)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a freelist can serialize into a freelist page.
|
||||
func TestFreelist_write(t *testing.T) {
|
||||
// Create a freelist and write it to a page.
|
||||
var buf [4096]byte
|
||||
f := &freelist{ids: []pgid{12, 39}, pending: make(map[txid][]pgid)}
|
||||
f.pending[100] = []pgid{28, 11}
|
||||
f.pending[101] = []pgid{3}
|
||||
p := (*page)(unsafe.Pointer(&buf[0]))
|
||||
if err := f.write(p); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// Read the page back out.
|
||||
f2 := newFreelist()
|
||||
f2.read(p)
|
||||
|
||||
// Ensure that the freelist is correct.
|
||||
// All pages should be present and in reverse order.
|
||||
if exp := []pgid{3, 11, 12, 28, 39}; !reflect.DeepEqual(exp, f2.ids) {
|
||||
t.Fatalf("exp=%v; got=%v", exp, f2.ids)
|
||||
}
|
||||
}
|
||||
|
||||
func Benchmark_FreelistRelease10K(b *testing.B) { benchmark_FreelistRelease(b, 10000) }
|
||||
func Benchmark_FreelistRelease100K(b *testing.B) { benchmark_FreelistRelease(b, 100000) }
|
||||
func Benchmark_FreelistRelease1000K(b *testing.B) { benchmark_FreelistRelease(b, 1000000) }
|
||||
func Benchmark_FreelistRelease10000K(b *testing.B) { benchmark_FreelistRelease(b, 10000000) }
|
||||
|
||||
func benchmark_FreelistRelease(b *testing.B, size int) {
|
||||
ids := randomPgids(size)
|
||||
pending := randomPgids(len(ids) / 400)
|
||||
b.ResetTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
f := &freelist{ids: ids, pending: map[txid][]pgid{1: pending}}
|
||||
f.release(1)
|
||||
}
|
||||
}
|
||||
|
||||
func randomPgids(n int) []pgid {
|
||||
rand.Seed(42)
|
||||
pgids := make(pgids, n)
|
||||
for i := range pgids {
|
||||
pgids[i] = pgid(rand.Int63())
|
||||
}
|
||||
sort.Sort(pgids)
|
||||
return pgids
|
||||
}
|
604
vendor/github.com/boltdb/bolt/node.go
generated
vendored
604
vendor/github.com/boltdb/bolt/node.go
generated
vendored
@ -1,604 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"sort"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// node represents an in-memory, deserialized page.
|
||||
type node struct {
|
||||
bucket *Bucket
|
||||
isLeaf bool
|
||||
unbalanced bool
|
||||
spilled bool
|
||||
key []byte
|
||||
pgid pgid
|
||||
parent *node
|
||||
children nodes
|
||||
inodes inodes
|
||||
}
|
||||
|
||||
// root returns the top-level node this node is attached to.
|
||||
func (n *node) root() *node {
|
||||
if n.parent == nil {
|
||||
return n
|
||||
}
|
||||
return n.parent.root()
|
||||
}
|
||||
|
||||
// minKeys returns the minimum number of inodes this node should have.
|
||||
func (n *node) minKeys() int {
|
||||
if n.isLeaf {
|
||||
return 1
|
||||
}
|
||||
return 2
|
||||
}
|
||||
|
||||
// size returns the size of the node after serialization.
|
||||
func (n *node) size() int {
|
||||
sz, elsz := pageHeaderSize, n.pageElementSize()
|
||||
for i := 0; i < len(n.inodes); i++ {
|
||||
item := &n.inodes[i]
|
||||
sz += elsz + len(item.key) + len(item.value)
|
||||
}
|
||||
return sz
|
||||
}
|
||||
|
||||
// sizeLessThan returns true if the node is less than a given size.
|
||||
// This is an optimization to avoid calculating a large node when we only need
|
||||
// to know if it fits inside a certain page size.
|
||||
func (n *node) sizeLessThan(v int) bool {
|
||||
sz, elsz := pageHeaderSize, n.pageElementSize()
|
||||
for i := 0; i < len(n.inodes); i++ {
|
||||
item := &n.inodes[i]
|
||||
sz += elsz + len(item.key) + len(item.value)
|
||||
if sz >= v {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// pageElementSize returns the size of each page element based on the type of node.
|
||||
func (n *node) pageElementSize() int {
|
||||
if n.isLeaf {
|
||||
return leafPageElementSize
|
||||
}
|
||||
return branchPageElementSize
|
||||
}
|
||||
|
||||
// childAt returns the child node at a given index.
|
||||
func (n *node) childAt(index int) *node {
|
||||
if n.isLeaf {
|
||||
panic(fmt.Sprintf("invalid childAt(%d) on a leaf node", index))
|
||||
}
|
||||
return n.bucket.node(n.inodes[index].pgid, n)
|
||||
}
|
||||
|
||||
// childIndex returns the index of a given child node.
|
||||
func (n *node) childIndex(child *node) int {
|
||||
index := sort.Search(len(n.inodes), func(i int) bool { return bytes.Compare(n.inodes[i].key, child.key) != -1 })
|
||||
return index
|
||||
}
|
||||
|
||||
// numChildren returns the number of children.
|
||||
func (n *node) numChildren() int {
|
||||
return len(n.inodes)
|
||||
}
|
||||
|
||||
// nextSibling returns the next node with the same parent.
|
||||
func (n *node) nextSibling() *node {
|
||||
if n.parent == nil {
|
||||
return nil
|
||||
}
|
||||
index := n.parent.childIndex(n)
|
||||
if index >= n.parent.numChildren()-1 {
|
||||
return nil
|
||||
}
|
||||
return n.parent.childAt(index + 1)
|
||||
}
|
||||
|
||||
// prevSibling returns the previous node with the same parent.
|
||||
func (n *node) prevSibling() *node {
|
||||
if n.parent == nil {
|
||||
return nil
|
||||
}
|
||||
index := n.parent.childIndex(n)
|
||||
if index == 0 {
|
||||
return nil
|
||||
}
|
||||
return n.parent.childAt(index - 1)
|
||||
}
|
||||
|
||||
// put inserts a key/value.
|
||||
func (n *node) put(oldKey, newKey, value []byte, pgid pgid, flags uint32) {
|
||||
if pgid >= n.bucket.tx.meta.pgid {
|
||||
panic(fmt.Sprintf("pgid (%d) above high water mark (%d)", pgid, n.bucket.tx.meta.pgid))
|
||||
} else if len(oldKey) <= 0 {
|
||||
panic("put: zero-length old key")
|
||||
} else if len(newKey) <= 0 {
|
||||
panic("put: zero-length new key")
|
||||
}
|
||||
|
||||
// Find insertion index.
|
||||
index := sort.Search(len(n.inodes), func(i int) bool { return bytes.Compare(n.inodes[i].key, oldKey) != -1 })
|
||||
|
||||
// Add capacity and shift nodes if we don't have an exact match and need to insert.
|
||||
exact := (len(n.inodes) > 0 && index < len(n.inodes) && bytes.Equal(n.inodes[index].key, oldKey))
|
||||
if !exact {
|
||||
n.inodes = append(n.inodes, inode{})
|
||||
copy(n.inodes[index+1:], n.inodes[index:])
|
||||
}
|
||||
|
||||
inode := &n.inodes[index]
|
||||
inode.flags = flags
|
||||
inode.key = newKey
|
||||
inode.value = value
|
||||
inode.pgid = pgid
|
||||
_assert(len(inode.key) > 0, "put: zero-length inode key")
|
||||
}
|
||||
|
||||
// del removes a key from the node.
|
||||
func (n *node) del(key []byte) {
|
||||
// Find index of key.
|
||||
index := sort.Search(len(n.inodes), func(i int) bool { return bytes.Compare(n.inodes[i].key, key) != -1 })
|
||||
|
||||
// Exit if the key isn't found.
|
||||
if index >= len(n.inodes) || !bytes.Equal(n.inodes[index].key, key) {
|
||||
return
|
||||
}
|
||||
|
||||
// Delete inode from the node.
|
||||
n.inodes = append(n.inodes[:index], n.inodes[index+1:]...)
|
||||
|
||||
// Mark the node as needing rebalancing.
|
||||
n.unbalanced = true
|
||||
}
|
||||
|
||||
// read initializes the node from a page.
|
||||
func (n *node) read(p *page) {
|
||||
n.pgid = p.id
|
||||
n.isLeaf = ((p.flags & leafPageFlag) != 0)
|
||||
n.inodes = make(inodes, int(p.count))
|
||||
|
||||
for i := 0; i < int(p.count); i++ {
|
||||
inode := &n.inodes[i]
|
||||
if n.isLeaf {
|
||||
elem := p.leafPageElement(uint16(i))
|
||||
inode.flags = elem.flags
|
||||
inode.key = elem.key()
|
||||
inode.value = elem.value()
|
||||
} else {
|
||||
elem := p.branchPageElement(uint16(i))
|
||||
inode.pgid = elem.pgid
|
||||
inode.key = elem.key()
|
||||
}
|
||||
_assert(len(inode.key) > 0, "read: zero-length inode key")
|
||||
}
|
||||
|
||||
// Save first key so we can find the node in the parent when we spill.
|
||||
if len(n.inodes) > 0 {
|
||||
n.key = n.inodes[0].key
|
||||
_assert(len(n.key) > 0, "read: zero-length node key")
|
||||
} else {
|
||||
n.key = nil
|
||||
}
|
||||
}
|
||||
|
||||
// write writes the items onto one or more pages.
|
||||
func (n *node) write(p *page) {
|
||||
// Initialize page.
|
||||
if n.isLeaf {
|
||||
p.flags |= leafPageFlag
|
||||
} else {
|
||||
p.flags |= branchPageFlag
|
||||
}
|
||||
|
||||
if len(n.inodes) >= 0xFFFF {
|
||||
panic(fmt.Sprintf("inode overflow: %d (pgid=%d)", len(n.inodes), p.id))
|
||||
}
|
||||
p.count = uint16(len(n.inodes))
|
||||
|
||||
// Stop here if there are no items to write.
|
||||
if p.count == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
// Loop over each item and write it to the page.
|
||||
b := (*[maxAllocSize]byte)(unsafe.Pointer(&p.ptr))[n.pageElementSize()*len(n.inodes):]
|
||||
for i, item := range n.inodes {
|
||||
_assert(len(item.key) > 0, "write: zero-length inode key")
|
||||
|
||||
// Write the page element.
|
||||
if n.isLeaf {
|
||||
elem := p.leafPageElement(uint16(i))
|
||||
elem.pos = uint32(uintptr(unsafe.Pointer(&b[0])) - uintptr(unsafe.Pointer(elem)))
|
||||
elem.flags = item.flags
|
||||
elem.ksize = uint32(len(item.key))
|
||||
elem.vsize = uint32(len(item.value))
|
||||
} else {
|
||||
elem := p.branchPageElement(uint16(i))
|
||||
elem.pos = uint32(uintptr(unsafe.Pointer(&b[0])) - uintptr(unsafe.Pointer(elem)))
|
||||
elem.ksize = uint32(len(item.key))
|
||||
elem.pgid = item.pgid
|
||||
_assert(elem.pgid != p.id, "write: circular dependency occurred")
|
||||
}
|
||||
|
||||
// If the length of key+value is larger than the max allocation size
|
||||
// then we need to reallocate the byte array pointer.
|
||||
//
|
||||
// See: https://github.com/boltdb/bolt/pull/335
|
||||
klen, vlen := len(item.key), len(item.value)
|
||||
if len(b) < klen+vlen {
|
||||
b = (*[maxAllocSize]byte)(unsafe.Pointer(&b[0]))[:]
|
||||
}
|
||||
|
||||
// Write data for the element to the end of the page.
|
||||
copy(b[0:], item.key)
|
||||
b = b[klen:]
|
||||
copy(b[0:], item.value)
|
||||
b = b[vlen:]
|
||||
}
|
||||
|
||||
// DEBUG ONLY: n.dump()
|
||||
}
|
||||
|
||||
// split breaks up a node into multiple smaller nodes, if appropriate.
|
||||
// This should only be called from the spill() function.
|
||||
func (n *node) split(pageSize int) []*node {
|
||||
var nodes []*node
|
||||
|
||||
node := n
|
||||
for {
|
||||
// Split node into two.
|
||||
a, b := node.splitTwo(pageSize)
|
||||
nodes = append(nodes, a)
|
||||
|
||||
// If we can't split then exit the loop.
|
||||
if b == nil {
|
||||
break
|
||||
}
|
||||
|
||||
// Set node to b so it gets split on the next iteration.
|
||||
node = b
|
||||
}
|
||||
|
||||
return nodes
|
||||
}
|
||||
|
||||
// splitTwo breaks up a node into two smaller nodes, if appropriate.
|
||||
// This should only be called from the split() function.
|
||||
func (n *node) splitTwo(pageSize int) (*node, *node) {
|
||||
// Ignore the split if the page doesn't have at least enough nodes for
|
||||
// two pages or if the nodes can fit in a single page.
|
||||
if len(n.inodes) <= (minKeysPerPage*2) || n.sizeLessThan(pageSize) {
|
||||
return n, nil
|
||||
}
|
||||
|
||||
// Determine the threshold before starting a new node.
|
||||
var fillPercent = n.bucket.FillPercent
|
||||
if fillPercent < minFillPercent {
|
||||
fillPercent = minFillPercent
|
||||
} else if fillPercent > maxFillPercent {
|
||||
fillPercent = maxFillPercent
|
||||
}
|
||||
threshold := int(float64(pageSize) * fillPercent)
|
||||
|
||||
// Determine split position and sizes of the two pages.
|
||||
splitIndex, _ := n.splitIndex(threshold)
|
||||
|
||||
// Split node into two separate nodes.
|
||||
// If there's no parent then we'll need to create one.
|
||||
if n.parent == nil {
|
||||
n.parent = &node{bucket: n.bucket, children: []*node{n}}
|
||||
}
|
||||
|
||||
// Create a new node and add it to the parent.
|
||||
next := &node{bucket: n.bucket, isLeaf: n.isLeaf, parent: n.parent}
|
||||
n.parent.children = append(n.parent.children, next)
|
||||
|
||||
// Split inodes across two nodes.
|
||||
next.inodes = n.inodes[splitIndex:]
|
||||
n.inodes = n.inodes[:splitIndex]
|
||||
|
||||
// Update the statistics.
|
||||
n.bucket.tx.stats.Split++
|
||||
|
||||
return n, next
|
||||
}
|
||||
|
||||
// splitIndex finds the position where a page will fill a given threshold.
|
||||
// It returns the index as well as the size of the first page.
|
||||
// This is only be called from split().
|
||||
func (n *node) splitIndex(threshold int) (index, sz int) {
|
||||
sz = pageHeaderSize
|
||||
|
||||
// Loop until we only have the minimum number of keys required for the second page.
|
||||
for i := 0; i < len(n.inodes)-minKeysPerPage; i++ {
|
||||
index = i
|
||||
inode := n.inodes[i]
|
||||
elsize := n.pageElementSize() + len(inode.key) + len(inode.value)
|
||||
|
||||
// If we have at least the minimum number of keys and adding another
|
||||
// node would put us over the threshold then exit and return.
|
||||
if i >= minKeysPerPage && sz+elsize > threshold {
|
||||
break
|
||||
}
|
||||
|
||||
// Add the element size to the total size.
|
||||
sz += elsize
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// spill writes the nodes to dirty pages and splits nodes as it goes.
|
||||
// Returns an error if dirty pages cannot be allocated.
|
||||
func (n *node) spill() error {
|
||||
var tx = n.bucket.tx
|
||||
if n.spilled {
|
||||
return nil
|
||||
}
|
||||
|
||||
// Spill child nodes first. Child nodes can materialize sibling nodes in
|
||||
// the case of split-merge so we cannot use a range loop. We have to check
|
||||
// the children size on every loop iteration.
|
||||
sort.Sort(n.children)
|
||||
for i := 0; i < len(n.children); i++ {
|
||||
if err := n.children[i].spill(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// We no longer need the child list because it's only used for spill tracking.
|
||||
n.children = nil
|
||||
|
||||
// Split nodes into appropriate sizes. The first node will always be n.
|
||||
var nodes = n.split(tx.db.pageSize)
|
||||
for _, node := range nodes {
|
||||
// Add node's page to the freelist if it's not new.
|
||||
if node.pgid > 0 {
|
||||
tx.db.freelist.free(tx.meta.txid, tx.page(node.pgid))
|
||||
node.pgid = 0
|
||||
}
|
||||
|
||||
// Allocate contiguous space for the node.
|
||||
p, err := tx.allocate((node.size() / tx.db.pageSize) + 1)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Write the node.
|
||||
if p.id >= tx.meta.pgid {
|
||||
panic(fmt.Sprintf("pgid (%d) above high water mark (%d)", p.id, tx.meta.pgid))
|
||||
}
|
||||
node.pgid = p.id
|
||||
node.write(p)
|
||||
node.spilled = true
|
||||
|
||||
// Insert into parent inodes.
|
||||
if node.parent != nil {
|
||||
var key = node.key
|
||||
if key == nil {
|
||||
key = node.inodes[0].key
|
||||
}
|
||||
|
||||
node.parent.put(key, node.inodes[0].key, nil, node.pgid, 0)
|
||||
node.key = node.inodes[0].key
|
||||
_assert(len(node.key) > 0, "spill: zero-length node key")
|
||||
}
|
||||
|
||||
// Update the statistics.
|
||||
tx.stats.Spill++
|
||||
}
|
||||
|
||||
// If the root node split and created a new root then we need to spill that
|
||||
// as well. We'll clear out the children to make sure it doesn't try to respill.
|
||||
if n.parent != nil && n.parent.pgid == 0 {
|
||||
n.children = nil
|
||||
return n.parent.spill()
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// rebalance attempts to combine the node with sibling nodes if the node fill
|
||||
// size is below a threshold or if there are not enough keys.
|
||||
func (n *node) rebalance() {
|
||||
if !n.unbalanced {
|
||||
return
|
||||
}
|
||||
n.unbalanced = false
|
||||
|
||||
// Update statistics.
|
||||
n.bucket.tx.stats.Rebalance++
|
||||
|
||||
// Ignore if node is above threshold (25%) and has enough keys.
|
||||
var threshold = n.bucket.tx.db.pageSize / 4
|
||||
if n.size() > threshold && len(n.inodes) > n.minKeys() {
|
||||
return
|
||||
}
|
||||
|
||||
// Root node has special handling.
|
||||
if n.parent == nil {
|
||||
// If root node is a branch and only has one node then collapse it.
|
||||
if !n.isLeaf && len(n.inodes) == 1 {
|
||||
// Move root's child up.
|
||||
child := n.bucket.node(n.inodes[0].pgid, n)
|
||||
n.isLeaf = child.isLeaf
|
||||
n.inodes = child.inodes[:]
|
||||
n.children = child.children
|
||||
|
||||
// Reparent all child nodes being moved.
|
||||
for _, inode := range n.inodes {
|
||||
if child, ok := n.bucket.nodes[inode.pgid]; ok {
|
||||
child.parent = n
|
||||
}
|
||||
}
|
||||
|
||||
// Remove old child.
|
||||
child.parent = nil
|
||||
delete(n.bucket.nodes, child.pgid)
|
||||
child.free()
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// If node has no keys then just remove it.
|
||||
if n.numChildren() == 0 {
|
||||
n.parent.del(n.key)
|
||||
n.parent.removeChild(n)
|
||||
delete(n.bucket.nodes, n.pgid)
|
||||
n.free()
|
||||
n.parent.rebalance()
|
||||
return
|
||||
}
|
||||
|
||||
_assert(n.parent.numChildren() > 1, "parent must have at least 2 children")
|
||||
|
||||
// Destination node is right sibling if idx == 0, otherwise left sibling.
|
||||
var target *node
|
||||
var useNextSibling = (n.parent.childIndex(n) == 0)
|
||||
if useNextSibling {
|
||||
target = n.nextSibling()
|
||||
} else {
|
||||
target = n.prevSibling()
|
||||
}
|
||||
|
||||
// If both this node and the target node are too small then merge them.
|
||||
if useNextSibling {
|
||||
// Reparent all child nodes being moved.
|
||||
for _, inode := range target.inodes {
|
||||
if child, ok := n.bucket.nodes[inode.pgid]; ok {
|
||||
child.parent.removeChild(child)
|
||||
child.parent = n
|
||||
child.parent.children = append(child.parent.children, child)
|
||||
}
|
||||
}
|
||||
|
||||
// Copy over inodes from target and remove target.
|
||||
n.inodes = append(n.inodes, target.inodes...)
|
||||
n.parent.del(target.key)
|
||||
n.parent.removeChild(target)
|
||||
delete(n.bucket.nodes, target.pgid)
|
||||
target.free()
|
||||
} else {
|
||||
// Reparent all child nodes being moved.
|
||||
for _, inode := range n.inodes {
|
||||
if child, ok := n.bucket.nodes[inode.pgid]; ok {
|
||||
child.parent.removeChild(child)
|
||||
child.parent = target
|
||||
child.parent.children = append(child.parent.children, child)
|
||||
}
|
||||
}
|
||||
|
||||
// Copy over inodes to target and remove node.
|
||||
target.inodes = append(target.inodes, n.inodes...)
|
||||
n.parent.del(n.key)
|
||||
n.parent.removeChild(n)
|
||||
delete(n.bucket.nodes, n.pgid)
|
||||
n.free()
|
||||
}
|
||||
|
||||
// Either this node or the target node was deleted from the parent so rebalance it.
|
||||
n.parent.rebalance()
|
||||
}
|
||||
|
||||
// removes a node from the list of in-memory children.
|
||||
// This does not affect the inodes.
|
||||
func (n *node) removeChild(target *node) {
|
||||
for i, child := range n.children {
|
||||
if child == target {
|
||||
n.children = append(n.children[:i], n.children[i+1:]...)
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// dereference causes the node to copy all its inode key/value references to heap memory.
|
||||
// This is required when the mmap is reallocated so inodes are not pointing to stale data.
|
||||
func (n *node) dereference() {
|
||||
if n.key != nil {
|
||||
key := make([]byte, len(n.key))
|
||||
copy(key, n.key)
|
||||
n.key = key
|
||||
_assert(n.pgid == 0 || len(n.key) > 0, "dereference: zero-length node key on existing node")
|
||||
}
|
||||
|
||||
for i := range n.inodes {
|
||||
inode := &n.inodes[i]
|
||||
|
||||
key := make([]byte, len(inode.key))
|
||||
copy(key, inode.key)
|
||||
inode.key = key
|
||||
_assert(len(inode.key) > 0, "dereference: zero-length inode key")
|
||||
|
||||
value := make([]byte, len(inode.value))
|
||||
copy(value, inode.value)
|
||||
inode.value = value
|
||||
}
|
||||
|
||||
// Recursively dereference children.
|
||||
for _, child := range n.children {
|
||||
child.dereference()
|
||||
}
|
||||
|
||||
// Update statistics.
|
||||
n.bucket.tx.stats.NodeDeref++
|
||||
}
|
||||
|
||||
// free adds the node's underlying page to the freelist.
|
||||
func (n *node) free() {
|
||||
if n.pgid != 0 {
|
||||
n.bucket.tx.db.freelist.free(n.bucket.tx.meta.txid, n.bucket.tx.page(n.pgid))
|
||||
n.pgid = 0
|
||||
}
|
||||
}
|
||||
|
||||
// dump writes the contents of the node to STDERR for debugging purposes.
|
||||
/*
|
||||
func (n *node) dump() {
|
||||
// Write node header.
|
||||
var typ = "branch"
|
||||
if n.isLeaf {
|
||||
typ = "leaf"
|
||||
}
|
||||
warnf("[NODE %d {type=%s count=%d}]", n.pgid, typ, len(n.inodes))
|
||||
|
||||
// Write out abbreviated version of each item.
|
||||
for _, item := range n.inodes {
|
||||
if n.isLeaf {
|
||||
if item.flags&bucketLeafFlag != 0 {
|
||||
bucket := (*bucket)(unsafe.Pointer(&item.value[0]))
|
||||
warnf("+L %08x -> (bucket root=%d)", trunc(item.key, 4), bucket.root)
|
||||
} else {
|
||||
warnf("+L %08x -> %08x", trunc(item.key, 4), trunc(item.value, 4))
|
||||
}
|
||||
} else {
|
||||
warnf("+B %08x -> pgid=%d", trunc(item.key, 4), item.pgid)
|
||||
}
|
||||
}
|
||||
warn("")
|
||||
}
|
||||
*/
|
||||
|
||||
type nodes []*node
|
||||
|
||||
func (s nodes) Len() int { return len(s) }
|
||||
func (s nodes) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
|
||||
func (s nodes) Less(i, j int) bool { return bytes.Compare(s[i].inodes[0].key, s[j].inodes[0].key) == -1 }
|
||||
|
||||
// inode represents an internal node inside of a node.
|
||||
// It can be used to point to elements in a page or point
|
||||
// to an element which hasn't been added to a page yet.
|
||||
type inode struct {
|
||||
flags uint32
|
||||
pgid pgid
|
||||
key []byte
|
||||
value []byte
|
||||
}
|
||||
|
||||
type inodes []inode
|
156
vendor/github.com/boltdb/bolt/node_test.go
generated
vendored
156
vendor/github.com/boltdb/bolt/node_test.go
generated
vendored
@ -1,156 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"testing"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// Ensure that a node can insert a key/value.
|
||||
func TestNode_put(t *testing.T) {
|
||||
n := &node{inodes: make(inodes, 0), bucket: &Bucket{tx: &Tx{meta: &meta{pgid: 1}}}}
|
||||
n.put([]byte("baz"), []byte("baz"), []byte("2"), 0, 0)
|
||||
n.put([]byte("foo"), []byte("foo"), []byte("0"), 0, 0)
|
||||
n.put([]byte("bar"), []byte("bar"), []byte("1"), 0, 0)
|
||||
n.put([]byte("foo"), []byte("foo"), []byte("3"), 0, leafPageFlag)
|
||||
|
||||
if len(n.inodes) != 3 {
|
||||
t.Fatalf("exp=3; got=%d", len(n.inodes))
|
||||
}
|
||||
if k, v := n.inodes[0].key, n.inodes[0].value; string(k) != "bar" || string(v) != "1" {
|
||||
t.Fatalf("exp=<bar,1>; got=<%s,%s>", k, v)
|
||||
}
|
||||
if k, v := n.inodes[1].key, n.inodes[1].value; string(k) != "baz" || string(v) != "2" {
|
||||
t.Fatalf("exp=<baz,2>; got=<%s,%s>", k, v)
|
||||
}
|
||||
if k, v := n.inodes[2].key, n.inodes[2].value; string(k) != "foo" || string(v) != "3" {
|
||||
t.Fatalf("exp=<foo,3>; got=<%s,%s>", k, v)
|
||||
}
|
||||
if n.inodes[2].flags != uint32(leafPageFlag) {
|
||||
t.Fatalf("not a leaf: %d", n.inodes[2].flags)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a node can deserialize from a leaf page.
|
||||
func TestNode_read_LeafPage(t *testing.T) {
|
||||
// Create a page.
|
||||
var buf [4096]byte
|
||||
page := (*page)(unsafe.Pointer(&buf[0]))
|
||||
page.flags = leafPageFlag
|
||||
page.count = 2
|
||||
|
||||
// Insert 2 elements at the beginning. sizeof(leafPageElement) == 16
|
||||
nodes := (*[3]leafPageElement)(unsafe.Pointer(&page.ptr))
|
||||
nodes[0] = leafPageElement{flags: 0, pos: 32, ksize: 3, vsize: 4} // pos = sizeof(leafPageElement) * 2
|
||||
nodes[1] = leafPageElement{flags: 0, pos: 23, ksize: 10, vsize: 3} // pos = sizeof(leafPageElement) + 3 + 4
|
||||
|
||||
// Write data for the nodes at the end.
|
||||
data := (*[4096]byte)(unsafe.Pointer(&nodes[2]))
|
||||
copy(data[:], []byte("barfooz"))
|
||||
copy(data[7:], []byte("helloworldbye"))
|
||||
|
||||
// Deserialize page into a leaf.
|
||||
n := &node{}
|
||||
n.read(page)
|
||||
|
||||
// Check that there are two inodes with correct data.
|
||||
if !n.isLeaf {
|
||||
t.Fatal("expected leaf")
|
||||
}
|
||||
if len(n.inodes) != 2 {
|
||||
t.Fatalf("exp=2; got=%d", len(n.inodes))
|
||||
}
|
||||
if k, v := n.inodes[0].key, n.inodes[0].value; string(k) != "bar" || string(v) != "fooz" {
|
||||
t.Fatalf("exp=<bar,fooz>; got=<%s,%s>", k, v)
|
||||
}
|
||||
if k, v := n.inodes[1].key, n.inodes[1].value; string(k) != "helloworld" || string(v) != "bye" {
|
||||
t.Fatalf("exp=<helloworld,bye>; got=<%s,%s>", k, v)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a node can serialize into a leaf page.
|
||||
func TestNode_write_LeafPage(t *testing.T) {
|
||||
// Create a node.
|
||||
n := &node{isLeaf: true, inodes: make(inodes, 0), bucket: &Bucket{tx: &Tx{db: &DB{}, meta: &meta{pgid: 1}}}}
|
||||
n.put([]byte("susy"), []byte("susy"), []byte("que"), 0, 0)
|
||||
n.put([]byte("ricki"), []byte("ricki"), []byte("lake"), 0, 0)
|
||||
n.put([]byte("john"), []byte("john"), []byte("johnson"), 0, 0)
|
||||
|
||||
// Write it to a page.
|
||||
var buf [4096]byte
|
||||
p := (*page)(unsafe.Pointer(&buf[0]))
|
||||
n.write(p)
|
||||
|
||||
// Read the page back in.
|
||||
n2 := &node{}
|
||||
n2.read(p)
|
||||
|
||||
// Check that the two pages are the same.
|
||||
if len(n2.inodes) != 3 {
|
||||
t.Fatalf("exp=3; got=%d", len(n2.inodes))
|
||||
}
|
||||
if k, v := n2.inodes[0].key, n2.inodes[0].value; string(k) != "john" || string(v) != "johnson" {
|
||||
t.Fatalf("exp=<john,johnson>; got=<%s,%s>", k, v)
|
||||
}
|
||||
if k, v := n2.inodes[1].key, n2.inodes[1].value; string(k) != "ricki" || string(v) != "lake" {
|
||||
t.Fatalf("exp=<ricki,lake>; got=<%s,%s>", k, v)
|
||||
}
|
||||
if k, v := n2.inodes[2].key, n2.inodes[2].value; string(k) != "susy" || string(v) != "que" {
|
||||
t.Fatalf("exp=<susy,que>; got=<%s,%s>", k, v)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a node can split into appropriate subgroups.
|
||||
func TestNode_split(t *testing.T) {
|
||||
// Create a node.
|
||||
n := &node{inodes: make(inodes, 0), bucket: &Bucket{tx: &Tx{db: &DB{}, meta: &meta{pgid: 1}}}}
|
||||
n.put([]byte("00000001"), []byte("00000001"), []byte("0123456701234567"), 0, 0)
|
||||
n.put([]byte("00000002"), []byte("00000002"), []byte("0123456701234567"), 0, 0)
|
||||
n.put([]byte("00000003"), []byte("00000003"), []byte("0123456701234567"), 0, 0)
|
||||
n.put([]byte("00000004"), []byte("00000004"), []byte("0123456701234567"), 0, 0)
|
||||
n.put([]byte("00000005"), []byte("00000005"), []byte("0123456701234567"), 0, 0)
|
||||
|
||||
// Split between 2 & 3.
|
||||
n.split(100)
|
||||
|
||||
var parent = n.parent
|
||||
if len(parent.children) != 2 {
|
||||
t.Fatalf("exp=2; got=%d", len(parent.children))
|
||||
}
|
||||
if len(parent.children[0].inodes) != 2 {
|
||||
t.Fatalf("exp=2; got=%d", len(parent.children[0].inodes))
|
||||
}
|
||||
if len(parent.children[1].inodes) != 3 {
|
||||
t.Fatalf("exp=3; got=%d", len(parent.children[1].inodes))
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a page with the minimum number of inodes just returns a single node.
|
||||
func TestNode_split_MinKeys(t *testing.T) {
|
||||
// Create a node.
|
||||
n := &node{inodes: make(inodes, 0), bucket: &Bucket{tx: &Tx{db: &DB{}, meta: &meta{pgid: 1}}}}
|
||||
n.put([]byte("00000001"), []byte("00000001"), []byte("0123456701234567"), 0, 0)
|
||||
n.put([]byte("00000002"), []byte("00000002"), []byte("0123456701234567"), 0, 0)
|
||||
|
||||
// Split.
|
||||
n.split(20)
|
||||
if n.parent != nil {
|
||||
t.Fatalf("expected nil parent")
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a node that has keys that all fit on a page just returns one leaf.
|
||||
func TestNode_split_SinglePage(t *testing.T) {
|
||||
// Create a node.
|
||||
n := &node{inodes: make(inodes, 0), bucket: &Bucket{tx: &Tx{db: &DB{}, meta: &meta{pgid: 1}}}}
|
||||
n.put([]byte("00000001"), []byte("00000001"), []byte("0123456701234567"), 0, 0)
|
||||
n.put([]byte("00000002"), []byte("00000002"), []byte("0123456701234567"), 0, 0)
|
||||
n.put([]byte("00000003"), []byte("00000003"), []byte("0123456701234567"), 0, 0)
|
||||
n.put([]byte("00000004"), []byte("00000004"), []byte("0123456701234567"), 0, 0)
|
||||
n.put([]byte("00000005"), []byte("00000005"), []byte("0123456701234567"), 0, 0)
|
||||
|
||||
// Split.
|
||||
n.split(4096)
|
||||
if n.parent != nil {
|
||||
t.Fatalf("expected nil parent")
|
||||
}
|
||||
}
|
197
vendor/github.com/boltdb/bolt/page.go
generated
vendored
197
vendor/github.com/boltdb/bolt/page.go
generated
vendored
@ -1,197 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
"sort"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
const pageHeaderSize = int(unsafe.Offsetof(((*page)(nil)).ptr))
|
||||
|
||||
const minKeysPerPage = 2
|
||||
|
||||
const branchPageElementSize = int(unsafe.Sizeof(branchPageElement{}))
|
||||
const leafPageElementSize = int(unsafe.Sizeof(leafPageElement{}))
|
||||
|
||||
const (
|
||||
branchPageFlag = 0x01
|
||||
leafPageFlag = 0x02
|
||||
metaPageFlag = 0x04
|
||||
freelistPageFlag = 0x10
|
||||
)
|
||||
|
||||
const (
|
||||
bucketLeafFlag = 0x01
|
||||
)
|
||||
|
||||
type pgid uint64
|
||||
|
||||
type page struct {
|
||||
id pgid
|
||||
flags uint16
|
||||
count uint16
|
||||
overflow uint32
|
||||
ptr uintptr
|
||||
}
|
||||
|
||||
// typ returns a human readable page type string used for debugging.
|
||||
func (p *page) typ() string {
|
||||
if (p.flags & branchPageFlag) != 0 {
|
||||
return "branch"
|
||||
} else if (p.flags & leafPageFlag) != 0 {
|
||||
return "leaf"
|
||||
} else if (p.flags & metaPageFlag) != 0 {
|
||||
return "meta"
|
||||
} else if (p.flags & freelistPageFlag) != 0 {
|
||||
return "freelist"
|
||||
}
|
||||
return fmt.Sprintf("unknown<%02x>", p.flags)
|
||||
}
|
||||
|
||||
// meta returns a pointer to the metadata section of the page.
|
||||
func (p *page) meta() *meta {
|
||||
return (*meta)(unsafe.Pointer(&p.ptr))
|
||||
}
|
||||
|
||||
// leafPageElement retrieves the leaf node by index
|
||||
func (p *page) leafPageElement(index uint16) *leafPageElement {
|
||||
n := &((*[0x7FFFFFF]leafPageElement)(unsafe.Pointer(&p.ptr)))[index]
|
||||
return n
|
||||
}
|
||||
|
||||
// leafPageElements retrieves a list of leaf nodes.
|
||||
func (p *page) leafPageElements() []leafPageElement {
|
||||
if p.count == 0 {
|
||||
return nil
|
||||
}
|
||||
return ((*[0x7FFFFFF]leafPageElement)(unsafe.Pointer(&p.ptr)))[:]
|
||||
}
|
||||
|
||||
// branchPageElement retrieves the branch node by index
|
||||
func (p *page) branchPageElement(index uint16) *branchPageElement {
|
||||
return &((*[0x7FFFFFF]branchPageElement)(unsafe.Pointer(&p.ptr)))[index]
|
||||
}
|
||||
|
||||
// branchPageElements retrieves a list of branch nodes.
|
||||
func (p *page) branchPageElements() []branchPageElement {
|
||||
if p.count == 0 {
|
||||
return nil
|
||||
}
|
||||
return ((*[0x7FFFFFF]branchPageElement)(unsafe.Pointer(&p.ptr)))[:]
|
||||
}
|
||||
|
||||
// dump writes n bytes of the page to STDERR as hex output.
|
||||
func (p *page) hexdump(n int) {
|
||||
buf := (*[maxAllocSize]byte)(unsafe.Pointer(p))[:n]
|
||||
fmt.Fprintf(os.Stderr, "%x\n", buf)
|
||||
}
|
||||
|
||||
type pages []*page
|
||||
|
||||
func (s pages) Len() int { return len(s) }
|
||||
func (s pages) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
|
||||
func (s pages) Less(i, j int) bool { return s[i].id < s[j].id }
|
||||
|
||||
// branchPageElement represents a node on a branch page.
|
||||
type branchPageElement struct {
|
||||
pos uint32
|
||||
ksize uint32
|
||||
pgid pgid
|
||||
}
|
||||
|
||||
// key returns a byte slice of the node key.
|
||||
func (n *branchPageElement) key() []byte {
|
||||
buf := (*[maxAllocSize]byte)(unsafe.Pointer(n))
|
||||
return (*[maxAllocSize]byte)(unsafe.Pointer(&buf[n.pos]))[:n.ksize]
|
||||
}
|
||||
|
||||
// leafPageElement represents a node on a leaf page.
|
||||
type leafPageElement struct {
|
||||
flags uint32
|
||||
pos uint32
|
||||
ksize uint32
|
||||
vsize uint32
|
||||
}
|
||||
|
||||
// key returns a byte slice of the node key.
|
||||
func (n *leafPageElement) key() []byte {
|
||||
buf := (*[maxAllocSize]byte)(unsafe.Pointer(n))
|
||||
return (*[maxAllocSize]byte)(unsafe.Pointer(&buf[n.pos]))[:n.ksize:n.ksize]
|
||||
}
|
||||
|
||||
// value returns a byte slice of the node value.
|
||||
func (n *leafPageElement) value() []byte {
|
||||
buf := (*[maxAllocSize]byte)(unsafe.Pointer(n))
|
||||
return (*[maxAllocSize]byte)(unsafe.Pointer(&buf[n.pos+n.ksize]))[:n.vsize:n.vsize]
|
||||
}
|
||||
|
||||
// PageInfo represents human readable information about a page.
|
||||
type PageInfo struct {
|
||||
ID int
|
||||
Type string
|
||||
Count int
|
||||
OverflowCount int
|
||||
}
|
||||
|
||||
type pgids []pgid
|
||||
|
||||
func (s pgids) Len() int { return len(s) }
|
||||
func (s pgids) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
|
||||
func (s pgids) Less(i, j int) bool { return s[i] < s[j] }
|
||||
|
||||
// merge returns the sorted union of a and b.
|
||||
func (a pgids) merge(b pgids) pgids {
|
||||
// Return the opposite slice if one is nil.
|
||||
if len(a) == 0 {
|
||||
return b
|
||||
}
|
||||
if len(b) == 0 {
|
||||
return a
|
||||
}
|
||||
merged := make(pgids, len(a)+len(b))
|
||||
mergepgids(merged, a, b)
|
||||
return merged
|
||||
}
|
||||
|
||||
// mergepgids copies the sorted union of a and b into dst.
|
||||
// If dst is too small, it panics.
|
||||
func mergepgids(dst, a, b pgids) {
|
||||
if len(dst) < len(a)+len(b) {
|
||||
panic(fmt.Errorf("mergepgids bad len %d < %d + %d", len(dst), len(a), len(b)))
|
||||
}
|
||||
// Copy in the opposite slice if one is nil.
|
||||
if len(a) == 0 {
|
||||
copy(dst, b)
|
||||
return
|
||||
}
|
||||
if len(b) == 0 {
|
||||
copy(dst, a)
|
||||
return
|
||||
}
|
||||
|
||||
// Merged will hold all elements from both lists.
|
||||
merged := dst[:0]
|
||||
|
||||
// Assign lead to the slice with a lower starting value, follow to the higher value.
|
||||
lead, follow := a, b
|
||||
if b[0] < a[0] {
|
||||
lead, follow = b, a
|
||||
}
|
||||
|
||||
// Continue while there are elements in the lead.
|
||||
for len(lead) > 0 {
|
||||
// Merge largest prefix of lead that is ahead of follow[0].
|
||||
n := sort.Search(len(lead), func(i int) bool { return lead[i] > follow[0] })
|
||||
merged = append(merged, lead[:n]...)
|
||||
if n >= len(lead) {
|
||||
break
|
||||
}
|
||||
|
||||
// Swap lead and follow.
|
||||
lead, follow = follow, lead[n:]
|
||||
}
|
||||
|
||||
// Append what's left in follow.
|
||||
_ = append(merged, follow...)
|
||||
}
|
72
vendor/github.com/boltdb/bolt/page_test.go
generated
vendored
72
vendor/github.com/boltdb/bolt/page_test.go
generated
vendored
@ -1,72 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"sort"
|
||||
"testing"
|
||||
"testing/quick"
|
||||
)
|
||||
|
||||
// Ensure that the page type can be returned in human readable format.
|
||||
func TestPage_typ(t *testing.T) {
|
||||
if typ := (&page{flags: branchPageFlag}).typ(); typ != "branch" {
|
||||
t.Fatalf("exp=branch; got=%v", typ)
|
||||
}
|
||||
if typ := (&page{flags: leafPageFlag}).typ(); typ != "leaf" {
|
||||
t.Fatalf("exp=leaf; got=%v", typ)
|
||||
}
|
||||
if typ := (&page{flags: metaPageFlag}).typ(); typ != "meta" {
|
||||
t.Fatalf("exp=meta; got=%v", typ)
|
||||
}
|
||||
if typ := (&page{flags: freelistPageFlag}).typ(); typ != "freelist" {
|
||||
t.Fatalf("exp=freelist; got=%v", typ)
|
||||
}
|
||||
if typ := (&page{flags: 20000}).typ(); typ != "unknown<4e20>" {
|
||||
t.Fatalf("exp=unknown<4e20>; got=%v", typ)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that the hexdump debugging function doesn't blow up.
|
||||
func TestPage_dump(t *testing.T) {
|
||||
(&page{id: 256}).hexdump(16)
|
||||
}
|
||||
|
||||
func TestPgids_merge(t *testing.T) {
|
||||
a := pgids{4, 5, 6, 10, 11, 12, 13, 27}
|
||||
b := pgids{1, 3, 8, 9, 25, 30}
|
||||
c := a.merge(b)
|
||||
if !reflect.DeepEqual(c, pgids{1, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 25, 27, 30}) {
|
||||
t.Errorf("mismatch: %v", c)
|
||||
}
|
||||
|
||||
a = pgids{4, 5, 6, 10, 11, 12, 13, 27, 35, 36}
|
||||
b = pgids{8, 9, 25, 30}
|
||||
c = a.merge(b)
|
||||
if !reflect.DeepEqual(c, pgids{4, 5, 6, 8, 9, 10, 11, 12, 13, 25, 27, 30, 35, 36}) {
|
||||
t.Errorf("mismatch: %v", c)
|
||||
}
|
||||
}
|
||||
|
||||
func TestPgids_merge_quick(t *testing.T) {
|
||||
if err := quick.Check(func(a, b pgids) bool {
|
||||
// Sort incoming lists.
|
||||
sort.Sort(a)
|
||||
sort.Sort(b)
|
||||
|
||||
// Merge the two lists together.
|
||||
got := a.merge(b)
|
||||
|
||||
// The expected value should be the two lists combined and sorted.
|
||||
exp := append(a, b...)
|
||||
sort.Sort(exp)
|
||||
|
||||
if !reflect.DeepEqual(exp, got) {
|
||||
t.Errorf("\nexp=%+v\ngot=%+v\n", exp, got)
|
||||
return false
|
||||
}
|
||||
|
||||
return true
|
||||
}, nil); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
87
vendor/github.com/boltdb/bolt/quick_test.go
generated
vendored
87
vendor/github.com/boltdb/bolt/quick_test.go
generated
vendored
@ -1,87 +0,0 @@
|
||||
package bolt_test
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"flag"
|
||||
"fmt"
|
||||
"math/rand"
|
||||
"os"
|
||||
"reflect"
|
||||
"testing/quick"
|
||||
"time"
|
||||
)
|
||||
|
||||
// testing/quick defaults to 5 iterations and a random seed.
|
||||
// You can override these settings from the command line:
|
||||
//
|
||||
// -quick.count The number of iterations to perform.
|
||||
// -quick.seed The seed to use for randomizing.
|
||||
// -quick.maxitems The maximum number of items to insert into a DB.
|
||||
// -quick.maxksize The maximum size of a key.
|
||||
// -quick.maxvsize The maximum size of a value.
|
||||
//
|
||||
|
||||
var qcount, qseed, qmaxitems, qmaxksize, qmaxvsize int
|
||||
|
||||
func init() {
|
||||
flag.IntVar(&qcount, "quick.count", 5, "")
|
||||
flag.IntVar(&qseed, "quick.seed", int(time.Now().UnixNano())%100000, "")
|
||||
flag.IntVar(&qmaxitems, "quick.maxitems", 1000, "")
|
||||
flag.IntVar(&qmaxksize, "quick.maxksize", 1024, "")
|
||||
flag.IntVar(&qmaxvsize, "quick.maxvsize", 1024, "")
|
||||
flag.Parse()
|
||||
fmt.Fprintln(os.Stderr, "seed:", qseed)
|
||||
fmt.Fprintf(os.Stderr, "quick settings: count=%v, items=%v, ksize=%v, vsize=%v\n", qcount, qmaxitems, qmaxksize, qmaxvsize)
|
||||
}
|
||||
|
||||
func qconfig() *quick.Config {
|
||||
return &quick.Config{
|
||||
MaxCount: qcount,
|
||||
Rand: rand.New(rand.NewSource(int64(qseed))),
|
||||
}
|
||||
}
|
||||
|
||||
type testdata []testdataitem
|
||||
|
||||
func (t testdata) Len() int { return len(t) }
|
||||
func (t testdata) Swap(i, j int) { t[i], t[j] = t[j], t[i] }
|
||||
func (t testdata) Less(i, j int) bool { return bytes.Compare(t[i].Key, t[j].Key) == -1 }
|
||||
|
||||
func (t testdata) Generate(rand *rand.Rand, size int) reflect.Value {
|
||||
n := rand.Intn(qmaxitems-1) + 1
|
||||
items := make(testdata, n)
|
||||
used := make(map[string]bool)
|
||||
for i := 0; i < n; i++ {
|
||||
item := &items[i]
|
||||
// Ensure that keys are unique by looping until we find one that we have not already used.
|
||||
for {
|
||||
item.Key = randByteSlice(rand, 1, qmaxksize)
|
||||
if !used[string(item.Key)] {
|
||||
used[string(item.Key)] = true
|
||||
break
|
||||
}
|
||||
}
|
||||
item.Value = randByteSlice(rand, 0, qmaxvsize)
|
||||
}
|
||||
return reflect.ValueOf(items)
|
||||
}
|
||||
|
||||
type revtestdata []testdataitem
|
||||
|
||||
func (t revtestdata) Len() int { return len(t) }
|
||||
func (t revtestdata) Swap(i, j int) { t[i], t[j] = t[j], t[i] }
|
||||
func (t revtestdata) Less(i, j int) bool { return bytes.Compare(t[i].Key, t[j].Key) == 1 }
|
||||
|
||||
type testdataitem struct {
|
||||
Key []byte
|
||||
Value []byte
|
||||
}
|
||||
|
||||
func randByteSlice(rand *rand.Rand, minSize, maxSize int) []byte {
|
||||
n := rand.Intn(maxSize-minSize) + minSize
|
||||
b := make([]byte, n)
|
||||
for i := 0; i < n; i++ {
|
||||
b[i] = byte(rand.Intn(255))
|
||||
}
|
||||
return b
|
||||
}
|
329
vendor/github.com/boltdb/bolt/simulation_test.go
generated
vendored
329
vendor/github.com/boltdb/bolt/simulation_test.go
generated
vendored
@ -1,329 +0,0 @@
|
||||
package bolt_test
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"math/rand"
|
||||
"sync"
|
||||
"testing"
|
||||
|
||||
"github.com/boltdb/bolt"
|
||||
)
|
||||
|
||||
func TestSimulate_1op_1p(t *testing.T) { testSimulate(t, 1, 1) }
|
||||
func TestSimulate_10op_1p(t *testing.T) { testSimulate(t, 10, 1) }
|
||||
func TestSimulate_100op_1p(t *testing.T) { testSimulate(t, 100, 1) }
|
||||
func TestSimulate_1000op_1p(t *testing.T) { testSimulate(t, 1000, 1) }
|
||||
func TestSimulate_10000op_1p(t *testing.T) { testSimulate(t, 10000, 1) }
|
||||
|
||||
func TestSimulate_10op_10p(t *testing.T) { testSimulate(t, 10, 10) }
|
||||
func TestSimulate_100op_10p(t *testing.T) { testSimulate(t, 100, 10) }
|
||||
func TestSimulate_1000op_10p(t *testing.T) { testSimulate(t, 1000, 10) }
|
||||
func TestSimulate_10000op_10p(t *testing.T) { testSimulate(t, 10000, 10) }
|
||||
|
||||
func TestSimulate_100op_100p(t *testing.T) { testSimulate(t, 100, 100) }
|
||||
func TestSimulate_1000op_100p(t *testing.T) { testSimulate(t, 1000, 100) }
|
||||
func TestSimulate_10000op_100p(t *testing.T) { testSimulate(t, 10000, 100) }
|
||||
|
||||
func TestSimulate_10000op_1000p(t *testing.T) { testSimulate(t, 10000, 1000) }
|
||||
|
||||
// Randomly generate operations on a given database with multiple clients to ensure consistency and thread safety.
|
||||
func testSimulate(t *testing.T, threadCount, parallelism int) {
|
||||
if testing.Short() {
|
||||
t.Skip("skipping test in short mode.")
|
||||
}
|
||||
|
||||
rand.Seed(int64(qseed))
|
||||
|
||||
// A list of operations that readers and writers can perform.
|
||||
var readerHandlers = []simulateHandler{simulateGetHandler}
|
||||
var writerHandlers = []simulateHandler{simulateGetHandler, simulatePutHandler}
|
||||
|
||||
var versions = make(map[int]*QuickDB)
|
||||
versions[1] = NewQuickDB()
|
||||
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
var mutex sync.Mutex
|
||||
|
||||
// Run n threads in parallel, each with their own operation.
|
||||
var wg sync.WaitGroup
|
||||
var threads = make(chan bool, parallelism)
|
||||
var i int
|
||||
for {
|
||||
threads <- true
|
||||
wg.Add(1)
|
||||
writable := ((rand.Int() % 100) < 20) // 20% writers
|
||||
|
||||
// Choose an operation to execute.
|
||||
var handler simulateHandler
|
||||
if writable {
|
||||
handler = writerHandlers[rand.Intn(len(writerHandlers))]
|
||||
} else {
|
||||
handler = readerHandlers[rand.Intn(len(readerHandlers))]
|
||||
}
|
||||
|
||||
// Execute a thread for the given operation.
|
||||
go func(writable bool, handler simulateHandler) {
|
||||
defer wg.Done()
|
||||
|
||||
// Start transaction.
|
||||
tx, err := db.Begin(writable)
|
||||
if err != nil {
|
||||
t.Fatal("tx begin: ", err)
|
||||
}
|
||||
|
||||
// Obtain current state of the dataset.
|
||||
mutex.Lock()
|
||||
var qdb = versions[tx.ID()]
|
||||
if writable {
|
||||
qdb = versions[tx.ID()-1].Copy()
|
||||
}
|
||||
mutex.Unlock()
|
||||
|
||||
// Make sure we commit/rollback the tx at the end and update the state.
|
||||
if writable {
|
||||
defer func() {
|
||||
mutex.Lock()
|
||||
versions[tx.ID()] = qdb
|
||||
mutex.Unlock()
|
||||
|
||||
if err := tx.Commit(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}()
|
||||
} else {
|
||||
defer func() { _ = tx.Rollback() }()
|
||||
}
|
||||
|
||||
// Ignore operation if we don't have data yet.
|
||||
if qdb == nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Execute handler.
|
||||
handler(tx, qdb)
|
||||
|
||||
// Release a thread back to the scheduling loop.
|
||||
<-threads
|
||||
}(writable, handler)
|
||||
|
||||
i++
|
||||
if i > threadCount {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
// Wait until all threads are done.
|
||||
wg.Wait()
|
||||
}
|
||||
|
||||
type simulateHandler func(tx *bolt.Tx, qdb *QuickDB)
|
||||
|
||||
// Retrieves a key from the database and verifies that it is what is expected.
|
||||
func simulateGetHandler(tx *bolt.Tx, qdb *QuickDB) {
|
||||
// Randomly retrieve an existing exist.
|
||||
keys := qdb.Rand()
|
||||
if len(keys) == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
// Retrieve root bucket.
|
||||
b := tx.Bucket(keys[0])
|
||||
if b == nil {
|
||||
panic(fmt.Sprintf("bucket[0] expected: %08x\n", trunc(keys[0], 4)))
|
||||
}
|
||||
|
||||
// Drill into nested buckets.
|
||||
for _, key := range keys[1 : len(keys)-1] {
|
||||
b = b.Bucket(key)
|
||||
if b == nil {
|
||||
panic(fmt.Sprintf("bucket[n] expected: %v -> %v\n", keys, key))
|
||||
}
|
||||
}
|
||||
|
||||
// Verify key/value on the final bucket.
|
||||
expected := qdb.Get(keys)
|
||||
actual := b.Get(keys[len(keys)-1])
|
||||
if !bytes.Equal(actual, expected) {
|
||||
fmt.Println("=== EXPECTED ===")
|
||||
fmt.Println(expected)
|
||||
fmt.Println("=== ACTUAL ===")
|
||||
fmt.Println(actual)
|
||||
fmt.Println("=== END ===")
|
||||
panic("value mismatch")
|
||||
}
|
||||
}
|
||||
|
||||
// Inserts a key into the database.
|
||||
func simulatePutHandler(tx *bolt.Tx, qdb *QuickDB) {
|
||||
var err error
|
||||
keys, value := randKeys(), randValue()
|
||||
|
||||
// Retrieve root bucket.
|
||||
b := tx.Bucket(keys[0])
|
||||
if b == nil {
|
||||
b, err = tx.CreateBucket(keys[0])
|
||||
if err != nil {
|
||||
panic("create bucket: " + err.Error())
|
||||
}
|
||||
}
|
||||
|
||||
// Create nested buckets, if necessary.
|
||||
for _, key := range keys[1 : len(keys)-1] {
|
||||
child := b.Bucket(key)
|
||||
if child != nil {
|
||||
b = child
|
||||
} else {
|
||||
b, err = b.CreateBucket(key)
|
||||
if err != nil {
|
||||
panic("create bucket: " + err.Error())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Insert into database.
|
||||
if err := b.Put(keys[len(keys)-1], value); err != nil {
|
||||
panic("put: " + err.Error())
|
||||
}
|
||||
|
||||
// Insert into in-memory database.
|
||||
qdb.Put(keys, value)
|
||||
}
|
||||
|
||||
// QuickDB is an in-memory database that replicates the functionality of the
|
||||
// Bolt DB type except that it is entirely in-memory. It is meant for testing
|
||||
// that the Bolt database is consistent.
|
||||
type QuickDB struct {
|
||||
sync.RWMutex
|
||||
m map[string]interface{}
|
||||
}
|
||||
|
||||
// NewQuickDB returns an instance of QuickDB.
|
||||
func NewQuickDB() *QuickDB {
|
||||
return &QuickDB{m: make(map[string]interface{})}
|
||||
}
|
||||
|
||||
// Get retrieves the value at a key path.
|
||||
func (db *QuickDB) Get(keys [][]byte) []byte {
|
||||
db.RLock()
|
||||
defer db.RUnlock()
|
||||
|
||||
m := db.m
|
||||
for _, key := range keys[:len(keys)-1] {
|
||||
value := m[string(key)]
|
||||
if value == nil {
|
||||
return nil
|
||||
}
|
||||
switch value := value.(type) {
|
||||
case map[string]interface{}:
|
||||
m = value
|
||||
case []byte:
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// Only return if it's a simple value.
|
||||
if value, ok := m[string(keys[len(keys)-1])].([]byte); ok {
|
||||
return value
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Put inserts a value into a key path.
|
||||
func (db *QuickDB) Put(keys [][]byte, value []byte) {
|
||||
db.Lock()
|
||||
defer db.Unlock()
|
||||
|
||||
// Build buckets all the way down the key path.
|
||||
m := db.m
|
||||
for _, key := range keys[:len(keys)-1] {
|
||||
if _, ok := m[string(key)].([]byte); ok {
|
||||
return // Keypath intersects with a simple value. Do nothing.
|
||||
}
|
||||
|
||||
if m[string(key)] == nil {
|
||||
m[string(key)] = make(map[string]interface{})
|
||||
}
|
||||
m = m[string(key)].(map[string]interface{})
|
||||
}
|
||||
|
||||
// Insert value into the last key.
|
||||
m[string(keys[len(keys)-1])] = value
|
||||
}
|
||||
|
||||
// Rand returns a random key path that points to a simple value.
|
||||
func (db *QuickDB) Rand() [][]byte {
|
||||
db.RLock()
|
||||
defer db.RUnlock()
|
||||
if len(db.m) == 0 {
|
||||
return nil
|
||||
}
|
||||
var keys [][]byte
|
||||
db.rand(db.m, &keys)
|
||||
return keys
|
||||
}
|
||||
|
||||
func (db *QuickDB) rand(m map[string]interface{}, keys *[][]byte) {
|
||||
i, index := 0, rand.Intn(len(m))
|
||||
for k, v := range m {
|
||||
if i == index {
|
||||
*keys = append(*keys, []byte(k))
|
||||
if v, ok := v.(map[string]interface{}); ok {
|
||||
db.rand(v, keys)
|
||||
}
|
||||
return
|
||||
}
|
||||
i++
|
||||
}
|
||||
panic("quickdb rand: out-of-range")
|
||||
}
|
||||
|
||||
// Copy copies the entire database.
|
||||
func (db *QuickDB) Copy() *QuickDB {
|
||||
db.RLock()
|
||||
defer db.RUnlock()
|
||||
return &QuickDB{m: db.copy(db.m)}
|
||||
}
|
||||
|
||||
func (db *QuickDB) copy(m map[string]interface{}) map[string]interface{} {
|
||||
clone := make(map[string]interface{}, len(m))
|
||||
for k, v := range m {
|
||||
switch v := v.(type) {
|
||||
case map[string]interface{}:
|
||||
clone[k] = db.copy(v)
|
||||
default:
|
||||
clone[k] = v
|
||||
}
|
||||
}
|
||||
return clone
|
||||
}
|
||||
|
||||
func randKey() []byte {
|
||||
var min, max = 1, 1024
|
||||
n := rand.Intn(max-min) + min
|
||||
b := make([]byte, n)
|
||||
for i := 0; i < n; i++ {
|
||||
b[i] = byte(rand.Intn(255))
|
||||
}
|
||||
return b
|
||||
}
|
||||
|
||||
func randKeys() [][]byte {
|
||||
var keys [][]byte
|
||||
var count = rand.Intn(2) + 2
|
||||
for i := 0; i < count; i++ {
|
||||
keys = append(keys, randKey())
|
||||
}
|
||||
return keys
|
||||
}
|
||||
|
||||
func randValue() []byte {
|
||||
n := rand.Intn(8192)
|
||||
b := make([]byte, n)
|
||||
for i := 0; i < n; i++ {
|
||||
b[i] = byte(rand.Intn(255))
|
||||
}
|
||||
return b
|
||||
}
|
684
vendor/github.com/boltdb/bolt/tx.go
generated
vendored
684
vendor/github.com/boltdb/bolt/tx.go
generated
vendored
@ -1,684 +0,0 @@
|
||||
package bolt
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"sort"
|
||||
"strings"
|
||||
"time"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// txid represents the internal transaction identifier.
|
||||
type txid uint64
|
||||
|
||||
// Tx represents a read-only or read/write transaction on the database.
|
||||
// Read-only transactions can be used for retrieving values for keys and creating cursors.
|
||||
// Read/write transactions can create and remove buckets and create and remove keys.
|
||||
//
|
||||
// IMPORTANT: You must commit or rollback transactions when you are done with
|
||||
// them. Pages can not be reclaimed by the writer until no more transactions
|
||||
// are using them. A long running read transaction can cause the database to
|
||||
// quickly grow.
|
||||
type Tx struct {
|
||||
writable bool
|
||||
managed bool
|
||||
db *DB
|
||||
meta *meta
|
||||
root Bucket
|
||||
pages map[pgid]*page
|
||||
stats TxStats
|
||||
commitHandlers []func()
|
||||
|
||||
// WriteFlag specifies the flag for write-related methods like WriteTo().
|
||||
// Tx opens the database file with the specified flag to copy the data.
|
||||
//
|
||||
// By default, the flag is unset, which works well for mostly in-memory
|
||||
// workloads. For databases that are much larger than available RAM,
|
||||
// set the flag to syscall.O_DIRECT to avoid trashing the page cache.
|
||||
WriteFlag int
|
||||
}
|
||||
|
||||
// init initializes the transaction.
|
||||
func (tx *Tx) init(db *DB) {
|
||||
tx.db = db
|
||||
tx.pages = nil
|
||||
|
||||
// Copy the meta page since it can be changed by the writer.
|
||||
tx.meta = &meta{}
|
||||
db.meta().copy(tx.meta)
|
||||
|
||||
// Copy over the root bucket.
|
||||
tx.root = newBucket(tx)
|
||||
tx.root.bucket = &bucket{}
|
||||
*tx.root.bucket = tx.meta.root
|
||||
|
||||
// Increment the transaction id and add a page cache for writable transactions.
|
||||
if tx.writable {
|
||||
tx.pages = make(map[pgid]*page)
|
||||
tx.meta.txid += txid(1)
|
||||
}
|
||||
}
|
||||
|
||||
// ID returns the transaction id.
|
||||
func (tx *Tx) ID() int {
|
||||
return int(tx.meta.txid)
|
||||
}
|
||||
|
||||
// DB returns a reference to the database that created the transaction.
|
||||
func (tx *Tx) DB() *DB {
|
||||
return tx.db
|
||||
}
|
||||
|
||||
// Size returns current database size in bytes as seen by this transaction.
|
||||
func (tx *Tx) Size() int64 {
|
||||
return int64(tx.meta.pgid) * int64(tx.db.pageSize)
|
||||
}
|
||||
|
||||
// Writable returns whether the transaction can perform write operations.
|
||||
func (tx *Tx) Writable() bool {
|
||||
return tx.writable
|
||||
}
|
||||
|
||||
// Cursor creates a cursor associated with the root bucket.
|
||||
// All items in the cursor will return a nil value because all root bucket keys point to buckets.
|
||||
// The cursor is only valid as long as the transaction is open.
|
||||
// Do not use a cursor after the transaction is closed.
|
||||
func (tx *Tx) Cursor() *Cursor {
|
||||
return tx.root.Cursor()
|
||||
}
|
||||
|
||||
// Stats retrieves a copy of the current transaction statistics.
|
||||
func (tx *Tx) Stats() TxStats {
|
||||
return tx.stats
|
||||
}
|
||||
|
||||
// Bucket retrieves a bucket by name.
|
||||
// Returns nil if the bucket does not exist.
|
||||
// The bucket instance is only valid for the lifetime of the transaction.
|
||||
func (tx *Tx) Bucket(name []byte) *Bucket {
|
||||
return tx.root.Bucket(name)
|
||||
}
|
||||
|
||||
// CreateBucket creates a new bucket.
|
||||
// Returns an error if the bucket already exists, if the bucket name is blank, or if the bucket name is too long.
|
||||
// The bucket instance is only valid for the lifetime of the transaction.
|
||||
func (tx *Tx) CreateBucket(name []byte) (*Bucket, error) {
|
||||
return tx.root.CreateBucket(name)
|
||||
}
|
||||
|
||||
// CreateBucketIfNotExists creates a new bucket if it doesn't already exist.
|
||||
// Returns an error if the bucket name is blank, or if the bucket name is too long.
|
||||
// The bucket instance is only valid for the lifetime of the transaction.
|
||||
func (tx *Tx) CreateBucketIfNotExists(name []byte) (*Bucket, error) {
|
||||
return tx.root.CreateBucketIfNotExists(name)
|
||||
}
|
||||
|
||||
// DeleteBucket deletes a bucket.
|
||||
// Returns an error if the bucket cannot be found or if the key represents a non-bucket value.
|
||||
func (tx *Tx) DeleteBucket(name []byte) error {
|
||||
return tx.root.DeleteBucket(name)
|
||||
}
|
||||
|
||||
// ForEach executes a function for each bucket in the root.
|
||||
// If the provided function returns an error then the iteration is stopped and
|
||||
// the error is returned to the caller.
|
||||
func (tx *Tx) ForEach(fn func(name []byte, b *Bucket) error) error {
|
||||
return tx.root.ForEach(func(k, v []byte) error {
|
||||
if err := fn(k, tx.root.Bucket(k)); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
})
|
||||
}
|
||||
|
||||
// OnCommit adds a handler function to be executed after the transaction successfully commits.
|
||||
func (tx *Tx) OnCommit(fn func()) {
|
||||
tx.commitHandlers = append(tx.commitHandlers, fn)
|
||||
}
|
||||
|
||||
// Commit writes all changes to disk and updates the meta page.
|
||||
// Returns an error if a disk write error occurs, or if Commit is
|
||||
// called on a read-only transaction.
|
||||
func (tx *Tx) Commit() error {
|
||||
_assert(!tx.managed, "managed tx commit not allowed")
|
||||
if tx.db == nil {
|
||||
return ErrTxClosed
|
||||
} else if !tx.writable {
|
||||
return ErrTxNotWritable
|
||||
}
|
||||
|
||||
// TODO(benbjohnson): Use vectorized I/O to write out dirty pages.
|
||||
|
||||
// Rebalance nodes which have had deletions.
|
||||
var startTime = time.Now()
|
||||
tx.root.rebalance()
|
||||
if tx.stats.Rebalance > 0 {
|
||||
tx.stats.RebalanceTime += time.Since(startTime)
|
||||
}
|
||||
|
||||
// spill data onto dirty pages.
|
||||
startTime = time.Now()
|
||||
if err := tx.root.spill(); err != nil {
|
||||
tx.rollback()
|
||||
return err
|
||||
}
|
||||
tx.stats.SpillTime += time.Since(startTime)
|
||||
|
||||
// Free the old root bucket.
|
||||
tx.meta.root.root = tx.root.root
|
||||
|
||||
opgid := tx.meta.pgid
|
||||
|
||||
// Free the freelist and allocate new pages for it. This will overestimate
|
||||
// the size of the freelist but not underestimate the size (which would be bad).
|
||||
tx.db.freelist.free(tx.meta.txid, tx.db.page(tx.meta.freelist))
|
||||
p, err := tx.allocate((tx.db.freelist.size() / tx.db.pageSize) + 1)
|
||||
if err != nil {
|
||||
tx.rollback()
|
||||
return err
|
||||
}
|
||||
if err := tx.db.freelist.write(p); err != nil {
|
||||
tx.rollback()
|
||||
return err
|
||||
}
|
||||
tx.meta.freelist = p.id
|
||||
|
||||
// If the high water mark has moved up then attempt to grow the database.
|
||||
if tx.meta.pgid > opgid {
|
||||
if err := tx.db.grow(int(tx.meta.pgid+1) * tx.db.pageSize); err != nil {
|
||||
tx.rollback()
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Write dirty pages to disk.
|
||||
startTime = time.Now()
|
||||
if err := tx.write(); err != nil {
|
||||
tx.rollback()
|
||||
return err
|
||||
}
|
||||
|
||||
// If strict mode is enabled then perform a consistency check.
|
||||
// Only the first consistency error is reported in the panic.
|
||||
if tx.db.StrictMode {
|
||||
ch := tx.Check()
|
||||
var errs []string
|
||||
for {
|
||||
err, ok := <-ch
|
||||
if !ok {
|
||||
break
|
||||
}
|
||||
errs = append(errs, err.Error())
|
||||
}
|
||||
if len(errs) > 0 {
|
||||
panic("check fail: " + strings.Join(errs, "\n"))
|
||||
}
|
||||
}
|
||||
|
||||
// Write meta to disk.
|
||||
if err := tx.writeMeta(); err != nil {
|
||||
tx.rollback()
|
||||
return err
|
||||
}
|
||||
tx.stats.WriteTime += time.Since(startTime)
|
||||
|
||||
// Finalize the transaction.
|
||||
tx.close()
|
||||
|
||||
// Execute commit handlers now that the locks have been removed.
|
||||
for _, fn := range tx.commitHandlers {
|
||||
fn()
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// Rollback closes the transaction and ignores all previous updates. Read-only
|
||||
// transactions must be rolled back and not committed.
|
||||
func (tx *Tx) Rollback() error {
|
||||
_assert(!tx.managed, "managed tx rollback not allowed")
|
||||
if tx.db == nil {
|
||||
return ErrTxClosed
|
||||
}
|
||||
tx.rollback()
|
||||
return nil
|
||||
}
|
||||
|
||||
func (tx *Tx) rollback() {
|
||||
if tx.db == nil {
|
||||
return
|
||||
}
|
||||
if tx.writable {
|
||||
tx.db.freelist.rollback(tx.meta.txid)
|
||||
tx.db.freelist.reload(tx.db.page(tx.db.meta().freelist))
|
||||
}
|
||||
tx.close()
|
||||
}
|
||||
|
||||
func (tx *Tx) close() {
|
||||
if tx.db == nil {
|
||||
return
|
||||
}
|
||||
if tx.writable {
|
||||
// Grab freelist stats.
|
||||
var freelistFreeN = tx.db.freelist.free_count()
|
||||
var freelistPendingN = tx.db.freelist.pending_count()
|
||||
var freelistAlloc = tx.db.freelist.size()
|
||||
|
||||
// Remove transaction ref & writer lock.
|
||||
tx.db.rwtx = nil
|
||||
tx.db.rwlock.Unlock()
|
||||
|
||||
// Merge statistics.
|
||||
tx.db.statlock.Lock()
|
||||
tx.db.stats.FreePageN = freelistFreeN
|
||||
tx.db.stats.PendingPageN = freelistPendingN
|
||||
tx.db.stats.FreeAlloc = (freelistFreeN + freelistPendingN) * tx.db.pageSize
|
||||
tx.db.stats.FreelistInuse = freelistAlloc
|
||||
tx.db.stats.TxStats.add(&tx.stats)
|
||||
tx.db.statlock.Unlock()
|
||||
} else {
|
||||
tx.db.removeTx(tx)
|
||||
}
|
||||
|
||||
// Clear all references.
|
||||
tx.db = nil
|
||||
tx.meta = nil
|
||||
tx.root = Bucket{tx: tx}
|
||||
tx.pages = nil
|
||||
}
|
||||
|
||||
// Copy writes the entire database to a writer.
|
||||
// This function exists for backwards compatibility. Use WriteTo() instead.
|
||||
func (tx *Tx) Copy(w io.Writer) error {
|
||||
_, err := tx.WriteTo(w)
|
||||
return err
|
||||
}
|
||||
|
||||
// WriteTo writes the entire database to a writer.
|
||||
// If err == nil then exactly tx.Size() bytes will be written into the writer.
|
||||
func (tx *Tx) WriteTo(w io.Writer) (n int64, err error) {
|
||||
// Attempt to open reader with WriteFlag
|
||||
f, err := os.OpenFile(tx.db.path, os.O_RDONLY|tx.WriteFlag, 0)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
defer func() { _ = f.Close() }()
|
||||
|
||||
// Generate a meta page. We use the same page data for both meta pages.
|
||||
buf := make([]byte, tx.db.pageSize)
|
||||
page := (*page)(unsafe.Pointer(&buf[0]))
|
||||
page.flags = metaPageFlag
|
||||
*page.meta() = *tx.meta
|
||||
|
||||
// Write meta 0.
|
||||
page.id = 0
|
||||
page.meta().checksum = page.meta().sum64()
|
||||
nn, err := w.Write(buf)
|
||||
n += int64(nn)
|
||||
if err != nil {
|
||||
return n, fmt.Errorf("meta 0 copy: %s", err)
|
||||
}
|
||||
|
||||
// Write meta 1 with a lower transaction id.
|
||||
page.id = 1
|
||||
page.meta().txid -= 1
|
||||
page.meta().checksum = page.meta().sum64()
|
||||
nn, err = w.Write(buf)
|
||||
n += int64(nn)
|
||||
if err != nil {
|
||||
return n, fmt.Errorf("meta 1 copy: %s", err)
|
||||
}
|
||||
|
||||
// Move past the meta pages in the file.
|
||||
if _, err := f.Seek(int64(tx.db.pageSize*2), os.SEEK_SET); err != nil {
|
||||
return n, fmt.Errorf("seek: %s", err)
|
||||
}
|
||||
|
||||
// Copy data pages.
|
||||
wn, err := io.CopyN(w, f, tx.Size()-int64(tx.db.pageSize*2))
|
||||
n += wn
|
||||
if err != nil {
|
||||
return n, err
|
||||
}
|
||||
|
||||
return n, f.Close()
|
||||
}
|
||||
|
||||
// CopyFile copies the entire database to file at the given path.
|
||||
// A reader transaction is maintained during the copy so it is safe to continue
|
||||
// using the database while a copy is in progress.
|
||||
func (tx *Tx) CopyFile(path string, mode os.FileMode) error {
|
||||
f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_TRUNC, mode)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
err = tx.Copy(f)
|
||||
if err != nil {
|
||||
_ = f.Close()
|
||||
return err
|
||||
}
|
||||
return f.Close()
|
||||
}
|
||||
|
||||
// Check performs several consistency checks on the database for this transaction.
|
||||
// An error is returned if any inconsistency is found.
|
||||
//
|
||||
// It can be safely run concurrently on a writable transaction. However, this
|
||||
// incurs a high cost for large databases and databases with a lot of subbuckets
|
||||
// because of caching. This overhead can be removed if running on a read-only
|
||||
// transaction, however, it is not safe to execute other writer transactions at
|
||||
// the same time.
|
||||
func (tx *Tx) Check() <-chan error {
|
||||
ch := make(chan error)
|
||||
go tx.check(ch)
|
||||
return ch
|
||||
}
|
||||
|
||||
func (tx *Tx) check(ch chan error) {
|
||||
// Check if any pages are double freed.
|
||||
freed := make(map[pgid]bool)
|
||||
all := make([]pgid, tx.db.freelist.count())
|
||||
tx.db.freelist.copyall(all)
|
||||
for _, id := range all {
|
||||
if freed[id] {
|
||||
ch <- fmt.Errorf("page %d: already freed", id)
|
||||
}
|
||||
freed[id] = true
|
||||
}
|
||||
|
||||
// Track every reachable page.
|
||||
reachable := make(map[pgid]*page)
|
||||
reachable[0] = tx.page(0) // meta0
|
||||
reachable[1] = tx.page(1) // meta1
|
||||
for i := uint32(0); i <= tx.page(tx.meta.freelist).overflow; i++ {
|
||||
reachable[tx.meta.freelist+pgid(i)] = tx.page(tx.meta.freelist)
|
||||
}
|
||||
|
||||
// Recursively check buckets.
|
||||
tx.checkBucket(&tx.root, reachable, freed, ch)
|
||||
|
||||
// Ensure all pages below high water mark are either reachable or freed.
|
||||
for i := pgid(0); i < tx.meta.pgid; i++ {
|
||||
_, isReachable := reachable[i]
|
||||
if !isReachable && !freed[i] {
|
||||
ch <- fmt.Errorf("page %d: unreachable unfreed", int(i))
|
||||
}
|
||||
}
|
||||
|
||||
// Close the channel to signal completion.
|
||||
close(ch)
|
||||
}
|
||||
|
||||
func (tx *Tx) checkBucket(b *Bucket, reachable map[pgid]*page, freed map[pgid]bool, ch chan error) {
|
||||
// Ignore inline buckets.
|
||||
if b.root == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
// Check every page used by this bucket.
|
||||
b.tx.forEachPage(b.root, 0, func(p *page, _ int) {
|
||||
if p.id > tx.meta.pgid {
|
||||
ch <- fmt.Errorf("page %d: out of bounds: %d", int(p.id), int(b.tx.meta.pgid))
|
||||
}
|
||||
|
||||
// Ensure each page is only referenced once.
|
||||
for i := pgid(0); i <= pgid(p.overflow); i++ {
|
||||
var id = p.id + i
|
||||
if _, ok := reachable[id]; ok {
|
||||
ch <- fmt.Errorf("page %d: multiple references", int(id))
|
||||
}
|
||||
reachable[id] = p
|
||||
}
|
||||
|
||||
// We should only encounter un-freed leaf and branch pages.
|
||||
if freed[p.id] {
|
||||
ch <- fmt.Errorf("page %d: reachable freed", int(p.id))
|
||||
} else if (p.flags&branchPageFlag) == 0 && (p.flags&leafPageFlag) == 0 {
|
||||
ch <- fmt.Errorf("page %d: invalid type: %s", int(p.id), p.typ())
|
||||
}
|
||||
})
|
||||
|
||||
// Check each bucket within this bucket.
|
||||
_ = b.ForEach(func(k, v []byte) error {
|
||||
if child := b.Bucket(k); child != nil {
|
||||
tx.checkBucket(child, reachable, freed, ch)
|
||||
}
|
||||
return nil
|
||||
})
|
||||
}
|
||||
|
||||
// allocate returns a contiguous block of memory starting at a given page.
|
||||
func (tx *Tx) allocate(count int) (*page, error) {
|
||||
p, err := tx.db.allocate(count)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Save to our page cache.
|
||||
tx.pages[p.id] = p
|
||||
|
||||
// Update statistics.
|
||||
tx.stats.PageCount++
|
||||
tx.stats.PageAlloc += count * tx.db.pageSize
|
||||
|
||||
return p, nil
|
||||
}
|
||||
|
||||
// write writes any dirty pages to disk.
|
||||
func (tx *Tx) write() error {
|
||||
// Sort pages by id.
|
||||
pages := make(pages, 0, len(tx.pages))
|
||||
for _, p := range tx.pages {
|
||||
pages = append(pages, p)
|
||||
}
|
||||
// Clear out page cache early.
|
||||
tx.pages = make(map[pgid]*page)
|
||||
sort.Sort(pages)
|
||||
|
||||
// Write pages to disk in order.
|
||||
for _, p := range pages {
|
||||
size := (int(p.overflow) + 1) * tx.db.pageSize
|
||||
offset := int64(p.id) * int64(tx.db.pageSize)
|
||||
|
||||
// Write out page in "max allocation" sized chunks.
|
||||
ptr := (*[maxAllocSize]byte)(unsafe.Pointer(p))
|
||||
for {
|
||||
// Limit our write to our max allocation size.
|
||||
sz := size
|
||||
if sz > maxAllocSize-1 {
|
||||
sz = maxAllocSize - 1
|
||||
}
|
||||
|
||||
// Write chunk to disk.
|
||||
buf := ptr[:sz]
|
||||
if _, err := tx.db.ops.writeAt(buf, offset); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Update statistics.
|
||||
tx.stats.Write++
|
||||
|
||||
// Exit inner for loop if we've written all the chunks.
|
||||
size -= sz
|
||||
if size == 0 {
|
||||
break
|
||||
}
|
||||
|
||||
// Otherwise move offset forward and move pointer to next chunk.
|
||||
offset += int64(sz)
|
||||
ptr = (*[maxAllocSize]byte)(unsafe.Pointer(&ptr[sz]))
|
||||
}
|
||||
}
|
||||
|
||||
// Ignore file sync if flag is set on DB.
|
||||
if !tx.db.NoSync || IgnoreNoSync {
|
||||
if err := fdatasync(tx.db); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Put small pages back to page pool.
|
||||
for _, p := range pages {
|
||||
// Ignore page sizes over 1 page.
|
||||
// These are allocated using make() instead of the page pool.
|
||||
if int(p.overflow) != 0 {
|
||||
continue
|
||||
}
|
||||
|
||||
buf := (*[maxAllocSize]byte)(unsafe.Pointer(p))[:tx.db.pageSize]
|
||||
|
||||
// See https://go.googlesource.com/go/+/f03c9202c43e0abb130669852082117ca50aa9b1
|
||||
for i := range buf {
|
||||
buf[i] = 0
|
||||
}
|
||||
tx.db.pagePool.Put(buf)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// writeMeta writes the meta to the disk.
|
||||
func (tx *Tx) writeMeta() error {
|
||||
// Create a temporary buffer for the meta page.
|
||||
buf := make([]byte, tx.db.pageSize)
|
||||
p := tx.db.pageInBuffer(buf, 0)
|
||||
tx.meta.write(p)
|
||||
|
||||
// Write the meta page to file.
|
||||
if _, err := tx.db.ops.writeAt(buf, int64(p.id)*int64(tx.db.pageSize)); err != nil {
|
||||
return err
|
||||
}
|
||||
if !tx.db.NoSync || IgnoreNoSync {
|
||||
if err := fdatasync(tx.db); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Update statistics.
|
||||
tx.stats.Write++
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// page returns a reference to the page with a given id.
|
||||
// If page has been written to then a temporary buffered page is returned.
|
||||
func (tx *Tx) page(id pgid) *page {
|
||||
// Check the dirty pages first.
|
||||
if tx.pages != nil {
|
||||
if p, ok := tx.pages[id]; ok {
|
||||
return p
|
||||
}
|
||||
}
|
||||
|
||||
// Otherwise return directly from the mmap.
|
||||
return tx.db.page(id)
|
||||
}
|
||||
|
||||
// forEachPage iterates over every page within a given page and executes a function.
|
||||
func (tx *Tx) forEachPage(pgid pgid, depth int, fn func(*page, int)) {
|
||||
p := tx.page(pgid)
|
||||
|
||||
// Execute function.
|
||||
fn(p, depth)
|
||||
|
||||
// Recursively loop over children.
|
||||
if (p.flags & branchPageFlag) != 0 {
|
||||
for i := 0; i < int(p.count); i++ {
|
||||
elem := p.branchPageElement(uint16(i))
|
||||
tx.forEachPage(elem.pgid, depth+1, fn)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Page returns page information for a given page number.
|
||||
// This is only safe for concurrent use when used by a writable transaction.
|
||||
func (tx *Tx) Page(id int) (*PageInfo, error) {
|
||||
if tx.db == nil {
|
||||
return nil, ErrTxClosed
|
||||
} else if pgid(id) >= tx.meta.pgid {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
// Build the page info.
|
||||
p := tx.db.page(pgid(id))
|
||||
info := &PageInfo{
|
||||
ID: id,
|
||||
Count: int(p.count),
|
||||
OverflowCount: int(p.overflow),
|
||||
}
|
||||
|
||||
// Determine the type (or if it's free).
|
||||
if tx.db.freelist.freed(pgid(id)) {
|
||||
info.Type = "free"
|
||||
} else {
|
||||
info.Type = p.typ()
|
||||
}
|
||||
|
||||
return info, nil
|
||||
}
|
||||
|
||||
// TxStats represents statistics about the actions performed by the transaction.
|
||||
type TxStats struct {
|
||||
// Page statistics.
|
||||
PageCount int // number of page allocations
|
||||
PageAlloc int // total bytes allocated
|
||||
|
||||
// Cursor statistics.
|
||||
CursorCount int // number of cursors created
|
||||
|
||||
// Node statistics
|
||||
NodeCount int // number of node allocations
|
||||
NodeDeref int // number of node dereferences
|
||||
|
||||
// Rebalance statistics.
|
||||
Rebalance int // number of node rebalances
|
||||
RebalanceTime time.Duration // total time spent rebalancing
|
||||
|
||||
// Split/Spill statistics.
|
||||
Split int // number of nodes split
|
||||
Spill int // number of nodes spilled
|
||||
SpillTime time.Duration // total time spent spilling
|
||||
|
||||
// Write statistics.
|
||||
Write int // number of writes performed
|
||||
WriteTime time.Duration // total time spent writing to disk
|
||||
}
|
||||
|
||||
func (s *TxStats) add(other *TxStats) {
|
||||
s.PageCount += other.PageCount
|
||||
s.PageAlloc += other.PageAlloc
|
||||
s.CursorCount += other.CursorCount
|
||||
s.NodeCount += other.NodeCount
|
||||
s.NodeDeref += other.NodeDeref
|
||||
s.Rebalance += other.Rebalance
|
||||
s.RebalanceTime += other.RebalanceTime
|
||||
s.Split += other.Split
|
||||
s.Spill += other.Spill
|
||||
s.SpillTime += other.SpillTime
|
||||
s.Write += other.Write
|
||||
s.WriteTime += other.WriteTime
|
||||
}
|
||||
|
||||
// Sub calculates and returns the difference between two sets of transaction stats.
|
||||
// This is useful when obtaining stats at two different points and time and
|
||||
// you need the performance counters that occurred within that time span.
|
||||
func (s *TxStats) Sub(other *TxStats) TxStats {
|
||||
var diff TxStats
|
||||
diff.PageCount = s.PageCount - other.PageCount
|
||||
diff.PageAlloc = s.PageAlloc - other.PageAlloc
|
||||
diff.CursorCount = s.CursorCount - other.CursorCount
|
||||
diff.NodeCount = s.NodeCount - other.NodeCount
|
||||
diff.NodeDeref = s.NodeDeref - other.NodeDeref
|
||||
diff.Rebalance = s.Rebalance - other.Rebalance
|
||||
diff.RebalanceTime = s.RebalanceTime - other.RebalanceTime
|
||||
diff.Split = s.Split - other.Split
|
||||
diff.Spill = s.Spill - other.Spill
|
||||
diff.SpillTime = s.SpillTime - other.SpillTime
|
||||
diff.Write = s.Write - other.Write
|
||||
diff.WriteTime = s.WriteTime - other.WriteTime
|
||||
return diff
|
||||
}
|
716
vendor/github.com/boltdb/bolt/tx_test.go
generated
vendored
716
vendor/github.com/boltdb/bolt/tx_test.go
generated
vendored
@ -1,716 +0,0 @@
|
||||
package bolt_test
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"errors"
|
||||
"fmt"
|
||||
"log"
|
||||
"os"
|
||||
"testing"
|
||||
|
||||
"github.com/boltdb/bolt"
|
||||
)
|
||||
|
||||
// Ensure that committing a closed transaction returns an error.
|
||||
func TestTx_Commit_ErrTxClosed(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
tx, err := db.Begin(true)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if _, err := tx.CreateBucket([]byte("foo")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := tx.Commit(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := tx.Commit(); err != bolt.ErrTxClosed {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that rolling back a closed transaction returns an error.
|
||||
func TestTx_Rollback_ErrTxClosed(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
tx, err := db.Begin(true)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := tx.Rollback(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := tx.Rollback(); err != bolt.ErrTxClosed {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that committing a read-only transaction returns an error.
|
||||
func TestTx_Commit_ErrTxNotWritable(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
tx, err := db.Begin(false)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := tx.Commit(); err != bolt.ErrTxNotWritable {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a transaction can retrieve a cursor on the root bucket.
|
||||
func TestTx_Cursor(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
if _, err := tx.CreateBucket([]byte("widgets")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if _, err := tx.CreateBucket([]byte("woojits")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
c := tx.Cursor()
|
||||
if k, v := c.First(); !bytes.Equal(k, []byte("widgets")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
if k, v := c.Next(); !bytes.Equal(k, []byte("woojits")) {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
|
||||
if k, v := c.Next(); k != nil {
|
||||
t.Fatalf("unexpected key: %v", k)
|
||||
} else if v != nil {
|
||||
t.Fatalf("unexpected value: %v", k)
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that creating a bucket with a read-only transaction returns an error.
|
||||
func TestTx_CreateBucket_ErrTxNotWritable(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
_, err := tx.CreateBucket([]byte("foo"))
|
||||
if err != bolt.ErrTxNotWritable {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that creating a bucket on a closed transaction returns an error.
|
||||
func TestTx_CreateBucket_ErrTxClosed(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
tx, err := db.Begin(true)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := tx.Commit(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if _, err := tx.CreateBucket([]byte("foo")); err != bolt.ErrTxClosed {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx can retrieve a bucket.
|
||||
func TestTx_Bucket(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
if _, err := tx.CreateBucket([]byte("widgets")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if tx.Bucket([]byte("widgets")) == nil {
|
||||
t.Fatal("expected bucket")
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a Tx retrieving a non-existent key returns nil.
|
||||
func TestTx_Get_NotFound(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := b.Put([]byte("foo"), []byte("bar")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if b.Get([]byte("no_such_key")) != nil {
|
||||
t.Fatal("expected nil value")
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a bucket can be created and retrieved.
|
||||
func TestTx_CreateBucket(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
// Create a bucket.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
} else if b == nil {
|
||||
t.Fatal("expected bucket")
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// Read the bucket through a separate transaction.
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
if tx.Bucket([]byte("widgets")) == nil {
|
||||
t.Fatal("expected bucket")
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a bucket can be created if it doesn't already exist.
|
||||
func TestTx_CreateBucketIfNotExists(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
// Create bucket.
|
||||
if b, err := tx.CreateBucketIfNotExists([]byte("widgets")); err != nil {
|
||||
t.Fatal(err)
|
||||
} else if b == nil {
|
||||
t.Fatal("expected bucket")
|
||||
}
|
||||
|
||||
// Create bucket again.
|
||||
if b, err := tx.CreateBucketIfNotExists([]byte("widgets")); err != nil {
|
||||
t.Fatal(err)
|
||||
} else if b == nil {
|
||||
t.Fatal("expected bucket")
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// Read the bucket through a separate transaction.
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
if tx.Bucket([]byte("widgets")) == nil {
|
||||
t.Fatal("expected bucket")
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure transaction returns an error if creating an unnamed bucket.
|
||||
func TestTx_CreateBucketIfNotExists_ErrBucketNameRequired(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
if _, err := tx.CreateBucketIfNotExists([]byte{}); err != bolt.ErrBucketNameRequired {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
|
||||
if _, err := tx.CreateBucketIfNotExists(nil); err != bolt.ErrBucketNameRequired {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a bucket cannot be created twice.
|
||||
func TestTx_CreateBucket_ErrBucketExists(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
// Create a bucket.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
if _, err := tx.CreateBucket([]byte("widgets")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// Create the same bucket again.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
if _, err := tx.CreateBucket([]byte("widgets")); err != bolt.ErrBucketExists {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a bucket is created with a non-blank name.
|
||||
func TestTx_CreateBucket_ErrBucketNameRequired(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
if _, err := tx.CreateBucket(nil); err != bolt.ErrBucketNameRequired {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that a bucket can be deleted.
|
||||
func TestTx_DeleteBucket(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
// Create a bucket and add a value.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte("bar")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// Delete the bucket and make sure we can't get the value.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
if err := tx.DeleteBucket([]byte("widgets")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if tx.Bucket([]byte("widgets")) != nil {
|
||||
t.Fatal("unexpected bucket")
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
// Create the bucket again and make sure there's not a phantom value.
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if v := b.Get([]byte("foo")); v != nil {
|
||||
t.Fatalf("unexpected phantom value: %v", v)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that deleting a bucket on a closed transaction returns an error.
|
||||
func TestTx_DeleteBucket_ErrTxClosed(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
tx, err := db.Begin(true)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := tx.Commit(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := tx.DeleteBucket([]byte("foo")); err != bolt.ErrTxClosed {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that deleting a bucket with a read-only transaction returns an error.
|
||||
func TestTx_DeleteBucket_ReadOnly(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
if err := tx.DeleteBucket([]byte("foo")); err != bolt.ErrTxNotWritable {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that nothing happens when deleting a bucket that doesn't exist.
|
||||
func TestTx_DeleteBucket_NotFound(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
if err := tx.DeleteBucket([]byte("widgets")); err != bolt.ErrBucketNotFound {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that no error is returned when a tx.ForEach function does not return
|
||||
// an error.
|
||||
func TestTx_ForEach_NoError(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte("bar")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := tx.ForEach(func(name []byte, b *bolt.Bucket) error {
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that an error is returned when a tx.ForEach function returns an error.
|
||||
func TestTx_ForEach_WithError(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte("bar")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
marker := errors.New("marker")
|
||||
if err := tx.ForEach(func(name []byte, b *bolt.Bucket) error {
|
||||
return marker
|
||||
}); err != marker {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that Tx commit handlers are called after a transaction successfully commits.
|
||||
func TestTx_OnCommit(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
var x int
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
tx.OnCommit(func() { x += 1 })
|
||||
tx.OnCommit(func() { x += 2 })
|
||||
if _, err := tx.CreateBucket([]byte("widgets")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
} else if x != 3 {
|
||||
t.Fatalf("unexpected x: %d", x)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that Tx commit handlers are NOT called after a transaction rolls back.
|
||||
func TestTx_OnCommit_Rollback(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
var x int
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
tx.OnCommit(func() { x += 1 })
|
||||
tx.OnCommit(func() { x += 2 })
|
||||
if _, err := tx.CreateBucket([]byte("widgets")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return errors.New("rollback this commit")
|
||||
}); err == nil || err.Error() != "rollback this commit" {
|
||||
t.Fatalf("unexpected error: %s", err)
|
||||
} else if x != 0 {
|
||||
t.Fatalf("unexpected x: %d", x)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that the database can be copied to a file path.
|
||||
func TestTx_CopyFile(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
|
||||
path := tempfile()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte("bar")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("baz"), []byte("bat")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
return tx.CopyFile(path, 0600)
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
db2, err := bolt.Open(path, 0600, nil)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db2.View(func(tx *bolt.Tx) error {
|
||||
if v := tx.Bucket([]byte("widgets")).Get([]byte("foo")); !bytes.Equal(v, []byte("bar")) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
if v := tx.Bucket([]byte("widgets")).Get([]byte("baz")); !bytes.Equal(v, []byte("bat")) {
|
||||
t.Fatalf("unexpected value: %v", v)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db2.Close(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
type failWriterError struct{}
|
||||
|
||||
func (failWriterError) Error() string {
|
||||
return "error injected for tests"
|
||||
}
|
||||
|
||||
type failWriter struct {
|
||||
// fail after this many bytes
|
||||
After int
|
||||
}
|
||||
|
||||
func (f *failWriter) Write(p []byte) (n int, err error) {
|
||||
n = len(p)
|
||||
if n > f.After {
|
||||
n = f.After
|
||||
err = failWriterError{}
|
||||
}
|
||||
f.After -= n
|
||||
return n, err
|
||||
}
|
||||
|
||||
// Ensure that Copy handles write errors right.
|
||||
func TestTx_CopyFile_Error_Meta(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte("bar")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("baz"), []byte("bat")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
return tx.Copy(&failWriter{})
|
||||
}); err == nil || err.Error() != "meta 0 copy: error injected for tests" {
|
||||
t.Fatalf("unexpected error: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure that Copy handles write errors right.
|
||||
func TestTx_CopyFile_Error_Normal(t *testing.T) {
|
||||
db := MustOpenDB()
|
||||
defer db.MustClose()
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte("bar")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := b.Put([]byte("baz"), []byte("bat")); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
return tx.Copy(&failWriter{3 * db.Info().PageSize})
|
||||
}); err == nil || err.Error() != "error injected for tests" {
|
||||
t.Fatalf("unexpected error: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
func ExampleTx_Rollback() {
|
||||
// Open the database.
|
||||
db, err := bolt.Open(tempfile(), 0666, nil)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
defer os.Remove(db.Path())
|
||||
|
||||
// Create a bucket.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
_, err := tx.CreateBucket([]byte("widgets"))
|
||||
return err
|
||||
}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Set a value for a key.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
return tx.Bucket([]byte("widgets")).Put([]byte("foo"), []byte("bar"))
|
||||
}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Update the key but rollback the transaction so it never saves.
|
||||
tx, err := db.Begin(true)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
b := tx.Bucket([]byte("widgets"))
|
||||
if err := b.Put([]byte("foo"), []byte("baz")); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
if err := tx.Rollback(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Ensure that our original value is still set.
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
value := tx.Bucket([]byte("widgets")).Get([]byte("foo"))
|
||||
fmt.Printf("The value for 'foo' is still: %s\n", value)
|
||||
return nil
|
||||
}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Close database to release file lock.
|
||||
if err := db.Close(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Output:
|
||||
// The value for 'foo' is still: bar
|
||||
}
|
||||
|
||||
func ExampleTx_CopyFile() {
|
||||
// Open the database.
|
||||
db, err := bolt.Open(tempfile(), 0666, nil)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
defer os.Remove(db.Path())
|
||||
|
||||
// Create a bucket and a key.
|
||||
if err := db.Update(func(tx *bolt.Tx) error {
|
||||
b, err := tx.CreateBucket([]byte("widgets"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := b.Put([]byte("foo"), []byte("bar")); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Copy the database to another file.
|
||||
toFile := tempfile()
|
||||
if err := db.View(func(tx *bolt.Tx) error {
|
||||
return tx.CopyFile(toFile, 0666)
|
||||
}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
defer os.Remove(toFile)
|
||||
|
||||
// Open the cloned database.
|
||||
db2, err := bolt.Open(toFile, 0666, nil)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Ensure that the key exists in the copy.
|
||||
if err := db2.View(func(tx *bolt.Tx) error {
|
||||
value := tx.Bucket([]byte("widgets")).Get([]byte("foo"))
|
||||
fmt.Printf("The value for 'foo' in the clone is: %s\n", value)
|
||||
return nil
|
||||
}); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Close database to release file lock.
|
||||
if err := db.Close(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
if err := db2.Close(); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
// Output:
|
||||
// The value for 'foo' in the clone is: bar
|
||||
}
|
16
vendor/github.com/garyburd/redigo/.travis.yml
generated
vendored
16
vendor/github.com/garyburd/redigo/.travis.yml
generated
vendored
@ -1,16 +0,0 @@
|
||||
language: go
|
||||
sudo: false
|
||||
services:
|
||||
- redis-server
|
||||
|
||||
go:
|
||||
- 1.4
|
||||
- 1.5
|
||||
- 1.6
|
||||
- tip
|
||||
|
||||
script:
|
||||
- go get -t -v ./...
|
||||
- diff -u <(echo -n) <(gofmt -d .)
|
||||
- go vet $(go list ./... | grep -v /vendor/)
|
||||
- go test -v -race ./...
|
175
vendor/github.com/garyburd/redigo/LICENSE
generated
vendored
175
vendor/github.com/garyburd/redigo/LICENSE
generated
vendored
@ -1,175 +0,0 @@
|
||||
|
||||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
50
vendor/github.com/garyburd/redigo/README.markdown
generated
vendored
50
vendor/github.com/garyburd/redigo/README.markdown
generated
vendored
@ -1,50 +0,0 @@
|
||||
Redigo
|
||||
======
|
||||
|
||||
[![Build Status](https://travis-ci.org/garyburd/redigo.svg?branch=master)](https://travis-ci.org/garyburd/redigo)
|
||||
[![GoDoc](https://godoc.org/github.com/garyburd/redigo/redis?status.svg)](https://godoc.org/github.com/garyburd/redigo/redis)
|
||||
|
||||
Redigo is a [Go](http://golang.org/) client for the [Redis](http://redis.io/) database.
|
||||
|
||||
Features
|
||||
-------
|
||||
|
||||
* A [Print-like](http://godoc.org/github.com/garyburd/redigo/redis#hdr-Executing_Commands) API with support for all Redis commands.
|
||||
* [Pipelining](http://godoc.org/github.com/garyburd/redigo/redis#hdr-Pipelining), including pipelined transactions.
|
||||
* [Publish/Subscribe](http://godoc.org/github.com/garyburd/redigo/redis#hdr-Publish_and_Subscribe).
|
||||
* [Connection pooling](http://godoc.org/github.com/garyburd/redigo/redis#Pool).
|
||||
* [Script helper type](http://godoc.org/github.com/garyburd/redigo/redis#Script) with optimistic use of EVALSHA.
|
||||
* [Helper functions](http://godoc.org/github.com/garyburd/redigo/redis#hdr-Reply_Helpers) for working with command replies.
|
||||
|
||||
Documentation
|
||||
-------------
|
||||
|
||||
- [API Reference](http://godoc.org/github.com/garyburd/redigo/redis)
|
||||
- [FAQ](https://github.com/garyburd/redigo/wiki/FAQ)
|
||||
|
||||
Installation
|
||||
------------
|
||||
|
||||
Install Redigo using the "go get" command:
|
||||
|
||||
go get github.com/garyburd/redigo/redis
|
||||
|
||||
The Go distribution is Redigo's only dependency.
|
||||
|
||||
Related Projects
|
||||
----------------
|
||||
|
||||
- [rafaeljusto/redigomock](https://godoc.org/github.com/rafaeljusto/redigomock) - A mock library for Redigo.
|
||||
- [chasex/redis-go-cluster](https://github.com/chasex/redis-go-cluster) - A Redis cluster client implementation.
|
||||
- [FZambia/go-sentinel](https://github.com/FZambia/go-sentinel) - Redis Sentinel support for Redigo
|
||||
- [PuerkitoBio/redisc](https://github.com/PuerkitoBio/redisc) - Redis Cluster client built on top of Redigo
|
||||
|
||||
Contributing
|
||||
------------
|
||||
|
||||
Send email to Gary Burd (address in GitHub profile) before doing any work on Redigo.
|
||||
|
||||
License
|
||||
-------
|
||||
|
||||
Redigo is available under the [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0.html).
|
54
vendor/github.com/garyburd/redigo/internal/commandinfo.go
generated
vendored
54
vendor/github.com/garyburd/redigo/internal/commandinfo.go
generated
vendored
@ -1,54 +0,0 @@
|
||||
// Copyright 2014 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package internal // import "github.com/garyburd/redigo/internal"
|
||||
|
||||
import (
|
||||
"strings"
|
||||
)
|
||||
|
||||
const (
|
||||
WatchState = 1 << iota
|
||||
MultiState
|
||||
SubscribeState
|
||||
MonitorState
|
||||
)
|
||||
|
||||
type CommandInfo struct {
|
||||
Set, Clear int
|
||||
}
|
||||
|
||||
var commandInfos = map[string]CommandInfo{
|
||||
"WATCH": {Set: WatchState},
|
||||
"UNWATCH": {Clear: WatchState},
|
||||
"MULTI": {Set: MultiState},
|
||||
"EXEC": {Clear: WatchState | MultiState},
|
||||
"DISCARD": {Clear: WatchState | MultiState},
|
||||
"PSUBSCRIBE": {Set: SubscribeState},
|
||||
"SUBSCRIBE": {Set: SubscribeState},
|
||||
"MONITOR": {Set: MonitorState},
|
||||
}
|
||||
|
||||
func init() {
|
||||
for n, ci := range commandInfos {
|
||||
commandInfos[strings.ToLower(n)] = ci
|
||||
}
|
||||
}
|
||||
|
||||
func LookupCommandInfo(commandName string) CommandInfo {
|
||||
if ci, ok := commandInfos[commandName]; ok {
|
||||
return ci
|
||||
}
|
||||
return commandInfos[strings.ToUpper(commandName)]
|
||||
}
|
27
vendor/github.com/garyburd/redigo/internal/commandinfo_test.go
generated
vendored
27
vendor/github.com/garyburd/redigo/internal/commandinfo_test.go
generated
vendored
@ -1,27 +0,0 @@
|
||||
package internal
|
||||
|
||||
import "testing"
|
||||
|
||||
func TestLookupCommandInfo(t *testing.T) {
|
||||
for _, n := range []string{"watch", "WATCH", "wAtch"} {
|
||||
if LookupCommandInfo(n) == (CommandInfo{}) {
|
||||
t.Errorf("LookupCommandInfo(%q) = CommandInfo{}, expected non-zero value", n)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func benchmarkLookupCommandInfo(b *testing.B, names ...string) {
|
||||
for i := 0; i < b.N; i++ {
|
||||
for _, c := range names {
|
||||
LookupCommandInfo(c)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkLookupCommandInfoCorrectCase(b *testing.B) {
|
||||
benchmarkLookupCommandInfo(b, "watch", "WATCH", "monitor", "MONITOR")
|
||||
}
|
||||
|
||||
func BenchmarkLookupCommandInfoMixedCase(b *testing.B) {
|
||||
benchmarkLookupCommandInfo(b, "wAtch", "WeTCH", "monItor", "MONiTOR")
|
||||
}
|
68
vendor/github.com/garyburd/redigo/internal/redistest/testdb.go
generated
vendored
68
vendor/github.com/garyburd/redigo/internal/redistest/testdb.go
generated
vendored
@ -1,68 +0,0 @@
|
||||
// Copyright 2014 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
// Package redistest contains utilities for writing Redigo tests.
|
||||
package redistest
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"time"
|
||||
|
||||
"github.com/garyburd/redigo/redis"
|
||||
)
|
||||
|
||||
type testConn struct {
|
||||
redis.Conn
|
||||
}
|
||||
|
||||
func (t testConn) Close() error {
|
||||
_, err := t.Conn.Do("SELECT", "9")
|
||||
if err != nil {
|
||||
return nil
|
||||
}
|
||||
_, err = t.Conn.Do("FLUSHDB")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return t.Conn.Close()
|
||||
}
|
||||
|
||||
// Dial dials the local Redis server and selects database 9. To prevent
|
||||
// stomping on real data, DialTestDB fails if database 9 contains data. The
|
||||
// returned connection flushes database 9 on close.
|
||||
func Dial() (redis.Conn, error) {
|
||||
c, err := redis.DialTimeout("tcp", ":6379", 0, 1*time.Second, 1*time.Second)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
_, err = c.Do("SELECT", "9")
|
||||
if err != nil {
|
||||
c.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
n, err := redis.Int(c.Do("DBSIZE"))
|
||||
if err != nil {
|
||||
c.Close()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if n != 0 {
|
||||
c.Close()
|
||||
return nil, errors.New("database #9 is not empty, test can not continue")
|
||||
}
|
||||
|
||||
return testConn{c}, nil
|
||||
}
|
570
vendor/github.com/garyburd/redigo/redis/conn.go
generated
vendored
570
vendor/github.com/garyburd/redigo/redis/conn.go
generated
vendored
@ -1,570 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"net"
|
||||
"net/url"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"sync"
|
||||
"time"
|
||||
)
|
||||
|
||||
// conn is the low-level implementation of Conn
|
||||
type conn struct {
|
||||
|
||||
// Shared
|
||||
mu sync.Mutex
|
||||
pending int
|
||||
err error
|
||||
conn net.Conn
|
||||
|
||||
// Read
|
||||
readTimeout time.Duration
|
||||
br *bufio.Reader
|
||||
|
||||
// Write
|
||||
writeTimeout time.Duration
|
||||
bw *bufio.Writer
|
||||
|
||||
// Scratch space for formatting argument length.
|
||||
// '*' or '$', length, "\r\n"
|
||||
lenScratch [32]byte
|
||||
|
||||
// Scratch space for formatting integers and floats.
|
||||
numScratch [40]byte
|
||||
}
|
||||
|
||||
// DialTimeout acts like Dial but takes timeouts for establishing the
|
||||
// connection to the server, writing a command and reading a reply.
|
||||
//
|
||||
// Deprecated: Use Dial with options instead.
|
||||
func DialTimeout(network, address string, connectTimeout, readTimeout, writeTimeout time.Duration) (Conn, error) {
|
||||
return Dial(network, address,
|
||||
DialConnectTimeout(connectTimeout),
|
||||
DialReadTimeout(readTimeout),
|
||||
DialWriteTimeout(writeTimeout))
|
||||
}
|
||||
|
||||
// DialOption specifies an option for dialing a Redis server.
|
||||
type DialOption struct {
|
||||
f func(*dialOptions)
|
||||
}
|
||||
|
||||
type dialOptions struct {
|
||||
readTimeout time.Duration
|
||||
writeTimeout time.Duration
|
||||
dial func(network, addr string) (net.Conn, error)
|
||||
db int
|
||||
password string
|
||||
}
|
||||
|
||||
// DialReadTimeout specifies the timeout for reading a single command reply.
|
||||
func DialReadTimeout(d time.Duration) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.readTimeout = d
|
||||
}}
|
||||
}
|
||||
|
||||
// DialWriteTimeout specifies the timeout for writing a single command.
|
||||
func DialWriteTimeout(d time.Duration) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.writeTimeout = d
|
||||
}}
|
||||
}
|
||||
|
||||
// DialConnectTimeout specifies the timeout for connecting to the Redis server.
|
||||
func DialConnectTimeout(d time.Duration) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
dialer := net.Dialer{Timeout: d}
|
||||
do.dial = dialer.Dial
|
||||
}}
|
||||
}
|
||||
|
||||
// DialNetDial specifies a custom dial function for creating TCP
|
||||
// connections. If this option is left out, then net.Dial is
|
||||
// used. DialNetDial overrides DialConnectTimeout.
|
||||
func DialNetDial(dial func(network, addr string) (net.Conn, error)) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.dial = dial
|
||||
}}
|
||||
}
|
||||
|
||||
// DialDatabase specifies the database to select when dialing a connection.
|
||||
func DialDatabase(db int) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.db = db
|
||||
}}
|
||||
}
|
||||
|
||||
// DialPassword specifies the password to use when connecting to
|
||||
// the Redis server.
|
||||
func DialPassword(password string) DialOption {
|
||||
return DialOption{func(do *dialOptions) {
|
||||
do.password = password
|
||||
}}
|
||||
}
|
||||
|
||||
// Dial connects to the Redis server at the given network and
|
||||
// address using the specified options.
|
||||
func Dial(network, address string, options ...DialOption) (Conn, error) {
|
||||
do := dialOptions{
|
||||
dial: net.Dial,
|
||||
}
|
||||
for _, option := range options {
|
||||
option.f(&do)
|
||||
}
|
||||
|
||||
netConn, err := do.dial(network, address)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
c := &conn{
|
||||
conn: netConn,
|
||||
bw: bufio.NewWriter(netConn),
|
||||
br: bufio.NewReader(netConn),
|
||||
readTimeout: do.readTimeout,
|
||||
writeTimeout: do.writeTimeout,
|
||||
}
|
||||
|
||||
if do.password != "" {
|
||||
if _, err := c.Do("AUTH", do.password); err != nil {
|
||||
netConn.Close()
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
if do.db != 0 {
|
||||
if _, err := c.Do("SELECT", do.db); err != nil {
|
||||
netConn.Close()
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
return c, nil
|
||||
}
|
||||
|
||||
var pathDBRegexp = regexp.MustCompile(`/(\d*)\z`)
|
||||
|
||||
// DialURL connects to a Redis server at the given URL using the Redis
|
||||
// URI scheme. URLs should follow the draft IANA specification for the
|
||||
// scheme (https://www.iana.org/assignments/uri-schemes/prov/redis).
|
||||
func DialURL(rawurl string, options ...DialOption) (Conn, error) {
|
||||
u, err := url.Parse(rawurl)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if u.Scheme != "redis" {
|
||||
return nil, fmt.Errorf("invalid redis URL scheme: %s", u.Scheme)
|
||||
}
|
||||
|
||||
// As per the IANA draft spec, the host defaults to localhost and
|
||||
// the port defaults to 6379.
|
||||
host, port, err := net.SplitHostPort(u.Host)
|
||||
if err != nil {
|
||||
// assume port is missing
|
||||
host = u.Host
|
||||
port = "6379"
|
||||
}
|
||||
if host == "" {
|
||||
host = "localhost"
|
||||
}
|
||||
address := net.JoinHostPort(host, port)
|
||||
|
||||
if u.User != nil {
|
||||
password, isSet := u.User.Password()
|
||||
if isSet {
|
||||
options = append(options, DialPassword(password))
|
||||
}
|
||||
}
|
||||
|
||||
match := pathDBRegexp.FindStringSubmatch(u.Path)
|
||||
if len(match) == 2 {
|
||||
db := 0
|
||||
if len(match[1]) > 0 {
|
||||
db, err = strconv.Atoi(match[1])
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("invalid database: %s", u.Path[1:])
|
||||
}
|
||||
}
|
||||
if db != 0 {
|
||||
options = append(options, DialDatabase(db))
|
||||
}
|
||||
} else if u.Path != "" {
|
||||
return nil, fmt.Errorf("invalid database: %s", u.Path[1:])
|
||||
}
|
||||
|
||||
return Dial("tcp", address, options...)
|
||||
}
|
||||
|
||||
// NewConn returns a new Redigo connection for the given net connection.
|
||||
func NewConn(netConn net.Conn, readTimeout, writeTimeout time.Duration) Conn {
|
||||
return &conn{
|
||||
conn: netConn,
|
||||
bw: bufio.NewWriter(netConn),
|
||||
br: bufio.NewReader(netConn),
|
||||
readTimeout: readTimeout,
|
||||
writeTimeout: writeTimeout,
|
||||
}
|
||||
}
|
||||
|
||||
func (c *conn) Close() error {
|
||||
c.mu.Lock()
|
||||
err := c.err
|
||||
if c.err == nil {
|
||||
c.err = errors.New("redigo: closed")
|
||||
err = c.conn.Close()
|
||||
}
|
||||
c.mu.Unlock()
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) fatal(err error) error {
|
||||
c.mu.Lock()
|
||||
if c.err == nil {
|
||||
c.err = err
|
||||
// Close connection to force errors on subsequent calls and to unblock
|
||||
// other reader or writer.
|
||||
c.conn.Close()
|
||||
}
|
||||
c.mu.Unlock()
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) Err() error {
|
||||
c.mu.Lock()
|
||||
err := c.err
|
||||
c.mu.Unlock()
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) writeLen(prefix byte, n int) error {
|
||||
c.lenScratch[len(c.lenScratch)-1] = '\n'
|
||||
c.lenScratch[len(c.lenScratch)-2] = '\r'
|
||||
i := len(c.lenScratch) - 3
|
||||
for {
|
||||
c.lenScratch[i] = byte('0' + n%10)
|
||||
i -= 1
|
||||
n = n / 10
|
||||
if n == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
c.lenScratch[i] = prefix
|
||||
_, err := c.bw.Write(c.lenScratch[i:])
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) writeString(s string) error {
|
||||
c.writeLen('$', len(s))
|
||||
c.bw.WriteString(s)
|
||||
_, err := c.bw.WriteString("\r\n")
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) writeBytes(p []byte) error {
|
||||
c.writeLen('$', len(p))
|
||||
c.bw.Write(p)
|
||||
_, err := c.bw.WriteString("\r\n")
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *conn) writeInt64(n int64) error {
|
||||
return c.writeBytes(strconv.AppendInt(c.numScratch[:0], n, 10))
|
||||
}
|
||||
|
||||
func (c *conn) writeFloat64(n float64) error {
|
||||
return c.writeBytes(strconv.AppendFloat(c.numScratch[:0], n, 'g', -1, 64))
|
||||
}
|
||||
|
||||
func (c *conn) writeCommand(cmd string, args []interface{}) (err error) {
|
||||
c.writeLen('*', 1+len(args))
|
||||
err = c.writeString(cmd)
|
||||
for _, arg := range args {
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
switch arg := arg.(type) {
|
||||
case string:
|
||||
err = c.writeString(arg)
|
||||
case []byte:
|
||||
err = c.writeBytes(arg)
|
||||
case int:
|
||||
err = c.writeInt64(int64(arg))
|
||||
case int64:
|
||||
err = c.writeInt64(arg)
|
||||
case float64:
|
||||
err = c.writeFloat64(arg)
|
||||
case bool:
|
||||
if arg {
|
||||
err = c.writeString("1")
|
||||
} else {
|
||||
err = c.writeString("0")
|
||||
}
|
||||
case nil:
|
||||
err = c.writeString("")
|
||||
default:
|
||||
var buf bytes.Buffer
|
||||
fmt.Fprint(&buf, arg)
|
||||
err = c.writeBytes(buf.Bytes())
|
||||
}
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
type protocolError string
|
||||
|
||||
func (pe protocolError) Error() string {
|
||||
return fmt.Sprintf("redigo: %s (possible server error or unsupported concurrent read by application)", string(pe))
|
||||
}
|
||||
|
||||
func (c *conn) readLine() ([]byte, error) {
|
||||
p, err := c.br.ReadSlice('\n')
|
||||
if err == bufio.ErrBufferFull {
|
||||
return nil, protocolError("long response line")
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
i := len(p) - 2
|
||||
if i < 0 || p[i] != '\r' {
|
||||
return nil, protocolError("bad response line terminator")
|
||||
}
|
||||
return p[:i], nil
|
||||
}
|
||||
|
||||
// parseLen parses bulk string and array lengths.
|
||||
func parseLen(p []byte) (int, error) {
|
||||
if len(p) == 0 {
|
||||
return -1, protocolError("malformed length")
|
||||
}
|
||||
|
||||
if p[0] == '-' && len(p) == 2 && p[1] == '1' {
|
||||
// handle $-1 and $-1 null replies.
|
||||
return -1, nil
|
||||
}
|
||||
|
||||
var n int
|
||||
for _, b := range p {
|
||||
n *= 10
|
||||
if b < '0' || b > '9' {
|
||||
return -1, protocolError("illegal bytes in length")
|
||||
}
|
||||
n += int(b - '0')
|
||||
}
|
||||
|
||||
return n, nil
|
||||
}
|
||||
|
||||
// parseInt parses an integer reply.
|
||||
func parseInt(p []byte) (interface{}, error) {
|
||||
if len(p) == 0 {
|
||||
return 0, protocolError("malformed integer")
|
||||
}
|
||||
|
||||
var negate bool
|
||||
if p[0] == '-' {
|
||||
negate = true
|
||||
p = p[1:]
|
||||
if len(p) == 0 {
|
||||
return 0, protocolError("malformed integer")
|
||||
}
|
||||
}
|
||||
|
||||
var n int64
|
||||
for _, b := range p {
|
||||
n *= 10
|
||||
if b < '0' || b > '9' {
|
||||
return 0, protocolError("illegal bytes in length")
|
||||
}
|
||||
n += int64(b - '0')
|
||||
}
|
||||
|
||||
if negate {
|
||||
n = -n
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
||||
var (
|
||||
okReply interface{} = "OK"
|
||||
pongReply interface{} = "PONG"
|
||||
)
|
||||
|
||||
func (c *conn) readReply() (interface{}, error) {
|
||||
line, err := c.readLine()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(line) == 0 {
|
||||
return nil, protocolError("short response line")
|
||||
}
|
||||
switch line[0] {
|
||||
case '+':
|
||||
switch {
|
||||
case len(line) == 3 && line[1] == 'O' && line[2] == 'K':
|
||||
// Avoid allocation for frequent "+OK" response.
|
||||
return okReply, nil
|
||||
case len(line) == 5 && line[1] == 'P' && line[2] == 'O' && line[3] == 'N' && line[4] == 'G':
|
||||
// Avoid allocation in PING command benchmarks :)
|
||||
return pongReply, nil
|
||||
default:
|
||||
return string(line[1:]), nil
|
||||
}
|
||||
case '-':
|
||||
return Error(string(line[1:])), nil
|
||||
case ':':
|
||||
return parseInt(line[1:])
|
||||
case '$':
|
||||
n, err := parseLen(line[1:])
|
||||
if n < 0 || err != nil {
|
||||
return nil, err
|
||||
}
|
||||
p := make([]byte, n)
|
||||
_, err = io.ReadFull(c.br, p)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if line, err := c.readLine(); err != nil {
|
||||
return nil, err
|
||||
} else if len(line) != 0 {
|
||||
return nil, protocolError("bad bulk string format")
|
||||
}
|
||||
return p, nil
|
||||
case '*':
|
||||
n, err := parseLen(line[1:])
|
||||
if n < 0 || err != nil {
|
||||
return nil, err
|
||||
}
|
||||
r := make([]interface{}, n)
|
||||
for i := range r {
|
||||
r[i], err = c.readReply()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
return r, nil
|
||||
}
|
||||
return nil, protocolError("unexpected response line")
|
||||
}
|
||||
|
||||
func (c *conn) Send(cmd string, args ...interface{}) error {
|
||||
c.mu.Lock()
|
||||
c.pending += 1
|
||||
c.mu.Unlock()
|
||||
if c.writeTimeout != 0 {
|
||||
c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
|
||||
}
|
||||
if err := c.writeCommand(cmd, args); err != nil {
|
||||
return c.fatal(err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *conn) Flush() error {
|
||||
if c.writeTimeout != 0 {
|
||||
c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
|
||||
}
|
||||
if err := c.bw.Flush(); err != nil {
|
||||
return c.fatal(err)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *conn) Receive() (reply interface{}, err error) {
|
||||
if c.readTimeout != 0 {
|
||||
c.conn.SetReadDeadline(time.Now().Add(c.readTimeout))
|
||||
}
|
||||
if reply, err = c.readReply(); err != nil {
|
||||
return nil, c.fatal(err)
|
||||
}
|
||||
// When using pub/sub, the number of receives can be greater than the
|
||||
// number of sends. To enable normal use of the connection after
|
||||
// unsubscribing from all channels, we do not decrement pending to a
|
||||
// negative value.
|
||||
//
|
||||
// The pending field is decremented after the reply is read to handle the
|
||||
// case where Receive is called before Send.
|
||||
c.mu.Lock()
|
||||
if c.pending > 0 {
|
||||
c.pending -= 1
|
||||
}
|
||||
c.mu.Unlock()
|
||||
if err, ok := reply.(Error); ok {
|
||||
return nil, err
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func (c *conn) Do(cmd string, args ...interface{}) (interface{}, error) {
|
||||
c.mu.Lock()
|
||||
pending := c.pending
|
||||
c.pending = 0
|
||||
c.mu.Unlock()
|
||||
|
||||
if cmd == "" && pending == 0 {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
if c.writeTimeout != 0 {
|
||||
c.conn.SetWriteDeadline(time.Now().Add(c.writeTimeout))
|
||||
}
|
||||
|
||||
if cmd != "" {
|
||||
if err := c.writeCommand(cmd, args); err != nil {
|
||||
return nil, c.fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
if err := c.bw.Flush(); err != nil {
|
||||
return nil, c.fatal(err)
|
||||
}
|
||||
|
||||
if c.readTimeout != 0 {
|
||||
c.conn.SetReadDeadline(time.Now().Add(c.readTimeout))
|
||||
}
|
||||
|
||||
if cmd == "" {
|
||||
reply := make([]interface{}, pending)
|
||||
for i := range reply {
|
||||
r, e := c.readReply()
|
||||
if e != nil {
|
||||
return nil, c.fatal(e)
|
||||
}
|
||||
reply[i] = r
|
||||
}
|
||||
return reply, nil
|
||||
}
|
||||
|
||||
var err error
|
||||
var reply interface{}
|
||||
for i := 0; i <= pending; i++ {
|
||||
var e error
|
||||
if reply, e = c.readReply(); e != nil {
|
||||
return nil, c.fatal(e)
|
||||
}
|
||||
if e, ok := reply.(Error); ok && err == nil {
|
||||
err = e
|
||||
}
|
||||
}
|
||||
return reply, err
|
||||
}
|
670
vendor/github.com/garyburd/redigo/redis/conn_test.go
generated
vendored
670
vendor/github.com/garyburd/redigo/redis/conn_test.go
generated
vendored
@ -1,670 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis_test
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"io"
|
||||
"math"
|
||||
"net"
|
||||
"os"
|
||||
"reflect"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/garyburd/redigo/redis"
|
||||
)
|
||||
|
||||
type testConn struct {
|
||||
io.Reader
|
||||
io.Writer
|
||||
}
|
||||
|
||||
func (*testConn) Close() error { return nil }
|
||||
func (*testConn) LocalAddr() net.Addr { return nil }
|
||||
func (*testConn) RemoteAddr() net.Addr { return nil }
|
||||
func (*testConn) SetDeadline(t time.Time) error { return nil }
|
||||
func (*testConn) SetReadDeadline(t time.Time) error { return nil }
|
||||
func (*testConn) SetWriteDeadline(t time.Time) error { return nil }
|
||||
|
||||
func dialTestConn(r io.Reader, w io.Writer) redis.DialOption {
|
||||
return redis.DialNetDial(func(net, addr string) (net.Conn, error) {
|
||||
return &testConn{Reader: r, Writer: w}, nil
|
||||
})
|
||||
}
|
||||
|
||||
var writeTests = []struct {
|
||||
args []interface{}
|
||||
expected string
|
||||
}{
|
||||
{
|
||||
[]interface{}{"SET", "key", "value"},
|
||||
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$5\r\nvalue\r\n",
|
||||
},
|
||||
{
|
||||
[]interface{}{"SET", "key", "value"},
|
||||
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$5\r\nvalue\r\n",
|
||||
},
|
||||
{
|
||||
[]interface{}{"SET", "key", byte(100)},
|
||||
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$3\r\n100\r\n",
|
||||
},
|
||||
{
|
||||
[]interface{}{"SET", "key", 100},
|
||||
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$3\r\n100\r\n",
|
||||
},
|
||||
{
|
||||
[]interface{}{"SET", "key", int64(math.MinInt64)},
|
||||
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$20\r\n-9223372036854775808\r\n",
|
||||
},
|
||||
{
|
||||
[]interface{}{"SET", "key", float64(1349673917.939762)},
|
||||
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$21\r\n1.349673917939762e+09\r\n",
|
||||
},
|
||||
{
|
||||
[]interface{}{"SET", "key", ""},
|
||||
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$0\r\n\r\n",
|
||||
},
|
||||
{
|
||||
[]interface{}{"SET", "key", nil},
|
||||
"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$0\r\n\r\n",
|
||||
},
|
||||
{
|
||||
[]interface{}{"ECHO", true, false},
|
||||
"*3\r\n$4\r\nECHO\r\n$1\r\n1\r\n$1\r\n0\r\n",
|
||||
},
|
||||
}
|
||||
|
||||
func TestWrite(t *testing.T) {
|
||||
for _, tt := range writeTests {
|
||||
var buf bytes.Buffer
|
||||
c, _ := redis.Dial("", "", dialTestConn(nil, &buf))
|
||||
err := c.Send(tt.args[0].(string), tt.args[1:]...)
|
||||
if err != nil {
|
||||
t.Errorf("Send(%v) returned error %v", tt.args, err)
|
||||
continue
|
||||
}
|
||||
c.Flush()
|
||||
actual := buf.String()
|
||||
if actual != tt.expected {
|
||||
t.Errorf("Send(%v) = %q, want %q", tt.args, actual, tt.expected)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var errorSentinel = &struct{}{}
|
||||
|
||||
var readTests = []struct {
|
||||
reply string
|
||||
expected interface{}
|
||||
}{
|
||||
{
|
||||
"+OK\r\n",
|
||||
"OK",
|
||||
},
|
||||
{
|
||||
"+PONG\r\n",
|
||||
"PONG",
|
||||
},
|
||||
{
|
||||
"@OK\r\n",
|
||||
errorSentinel,
|
||||
},
|
||||
{
|
||||
"$6\r\nfoobar\r\n",
|
||||
[]byte("foobar"),
|
||||
},
|
||||
{
|
||||
"$-1\r\n",
|
||||
nil,
|
||||
},
|
||||
{
|
||||
":1\r\n",
|
||||
int64(1),
|
||||
},
|
||||
{
|
||||
":-2\r\n",
|
||||
int64(-2),
|
||||
},
|
||||
{
|
||||
"*0\r\n",
|
||||
[]interface{}{},
|
||||
},
|
||||
{
|
||||
"*-1\r\n",
|
||||
nil,
|
||||
},
|
||||
{
|
||||
"*4\r\n$3\r\nfoo\r\n$3\r\nbar\r\n$5\r\nHello\r\n$5\r\nWorld\r\n",
|
||||
[]interface{}{[]byte("foo"), []byte("bar"), []byte("Hello"), []byte("World")},
|
||||
},
|
||||
{
|
||||
"*3\r\n$3\r\nfoo\r\n$-1\r\n$3\r\nbar\r\n",
|
||||
[]interface{}{[]byte("foo"), nil, []byte("bar")},
|
||||
},
|
||||
|
||||
{
|
||||
// "x" is not a valid length
|
||||
"$x\r\nfoobar\r\n",
|
||||
errorSentinel,
|
||||
},
|
||||
{
|
||||
// -2 is not a valid length
|
||||
"$-2\r\n",
|
||||
errorSentinel,
|
||||
},
|
||||
{
|
||||
// "x" is not a valid integer
|
||||
":x\r\n",
|
||||
errorSentinel,
|
||||
},
|
||||
{
|
||||
// missing \r\n following value
|
||||
"$6\r\nfoobar",
|
||||
errorSentinel,
|
||||
},
|
||||
{
|
||||
// short value
|
||||
"$6\r\nxx",
|
||||
errorSentinel,
|
||||
},
|
||||
{
|
||||
// long value
|
||||
"$6\r\nfoobarx\r\n",
|
||||
errorSentinel,
|
||||
},
|
||||
}
|
||||
|
||||
func TestRead(t *testing.T) {
|
||||
for _, tt := range readTests {
|
||||
c, _ := redis.Dial("", "", dialTestConn(strings.NewReader(tt.reply), nil))
|
||||
actual, err := c.Receive()
|
||||
if tt.expected == errorSentinel {
|
||||
if err == nil {
|
||||
t.Errorf("Receive(%q) did not return expected error", tt.reply)
|
||||
}
|
||||
} else {
|
||||
if err != nil {
|
||||
t.Errorf("Receive(%q) returned error %v", tt.reply, err)
|
||||
continue
|
||||
}
|
||||
if !reflect.DeepEqual(actual, tt.expected) {
|
||||
t.Errorf("Receive(%q) = %v, want %v", tt.reply, actual, tt.expected)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var testCommands = []struct {
|
||||
args []interface{}
|
||||
expected interface{}
|
||||
}{
|
||||
{
|
||||
[]interface{}{"PING"},
|
||||
"PONG",
|
||||
},
|
||||
{
|
||||
[]interface{}{"SET", "foo", "bar"},
|
||||
"OK",
|
||||
},
|
||||
{
|
||||
[]interface{}{"GET", "foo"},
|
||||
[]byte("bar"),
|
||||
},
|
||||
{
|
||||
[]interface{}{"GET", "nokey"},
|
||||
nil,
|
||||
},
|
||||
{
|
||||
[]interface{}{"MGET", "nokey", "foo"},
|
||||
[]interface{}{nil, []byte("bar")},
|
||||
},
|
||||
{
|
||||
[]interface{}{"INCR", "mycounter"},
|
||||
int64(1),
|
||||
},
|
||||
{
|
||||
[]interface{}{"LPUSH", "mylist", "foo"},
|
||||
int64(1),
|
||||
},
|
||||
{
|
||||
[]interface{}{"LPUSH", "mylist", "bar"},
|
||||
int64(2),
|
||||
},
|
||||
{
|
||||
[]interface{}{"LRANGE", "mylist", 0, -1},
|
||||
[]interface{}{[]byte("bar"), []byte("foo")},
|
||||
},
|
||||
{
|
||||
[]interface{}{"MULTI"},
|
||||
"OK",
|
||||
},
|
||||
{
|
||||
[]interface{}{"LRANGE", "mylist", 0, -1},
|
||||
"QUEUED",
|
||||
},
|
||||
{
|
||||
[]interface{}{"PING"},
|
||||
"QUEUED",
|
||||
},
|
||||
{
|
||||
[]interface{}{"EXEC"},
|
||||
[]interface{}{
|
||||
[]interface{}{[]byte("bar"), []byte("foo")},
|
||||
"PONG",
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
func TestDoCommands(t *testing.T) {
|
||||
c, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
for _, cmd := range testCommands {
|
||||
actual, err := c.Do(cmd.args[0].(string), cmd.args[1:]...)
|
||||
if err != nil {
|
||||
t.Errorf("Do(%v) returned error %v", cmd.args, err)
|
||||
continue
|
||||
}
|
||||
if !reflect.DeepEqual(actual, cmd.expected) {
|
||||
t.Errorf("Do(%v) = %v, want %v", cmd.args, actual, cmd.expected)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestPipelineCommands(t *testing.T) {
|
||||
c, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
for _, cmd := range testCommands {
|
||||
if err := c.Send(cmd.args[0].(string), cmd.args[1:]...); err != nil {
|
||||
t.Fatalf("Send(%v) returned error %v", cmd.args, err)
|
||||
}
|
||||
}
|
||||
if err := c.Flush(); err != nil {
|
||||
t.Errorf("Flush() returned error %v", err)
|
||||
}
|
||||
for _, cmd := range testCommands {
|
||||
actual, err := c.Receive()
|
||||
if err != nil {
|
||||
t.Fatalf("Receive(%v) returned error %v", cmd.args, err)
|
||||
}
|
||||
if !reflect.DeepEqual(actual, cmd.expected) {
|
||||
t.Errorf("Receive(%v) = %v, want %v", cmd.args, actual, cmd.expected)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestBlankCommmand(t *testing.T) {
|
||||
c, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
for _, cmd := range testCommands {
|
||||
if err := c.Send(cmd.args[0].(string), cmd.args[1:]...); err != nil {
|
||||
t.Fatalf("Send(%v) returned error %v", cmd.args, err)
|
||||
}
|
||||
}
|
||||
reply, err := redis.Values(c.Do(""))
|
||||
if err != nil {
|
||||
t.Fatalf("Do() returned error %v", err)
|
||||
}
|
||||
if len(reply) != len(testCommands) {
|
||||
t.Fatalf("len(reply)=%d, want %d", len(reply), len(testCommands))
|
||||
}
|
||||
for i, cmd := range testCommands {
|
||||
actual := reply[i]
|
||||
if !reflect.DeepEqual(actual, cmd.expected) {
|
||||
t.Errorf("Receive(%v) = %v, want %v", cmd.args, actual, cmd.expected)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestRecvBeforeSend(t *testing.T) {
|
||||
c, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
done := make(chan struct{})
|
||||
go func() {
|
||||
c.Receive()
|
||||
close(done)
|
||||
}()
|
||||
time.Sleep(time.Millisecond)
|
||||
c.Send("PING")
|
||||
c.Flush()
|
||||
<-done
|
||||
_, err = c.Do("")
|
||||
if err != nil {
|
||||
t.Fatalf("error=%v", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestError(t *testing.T) {
|
||||
c, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
c.Do("SET", "key", "val")
|
||||
_, err = c.Do("HSET", "key", "fld", "val")
|
||||
if err == nil {
|
||||
t.Errorf("Expected err for HSET on string key.")
|
||||
}
|
||||
if c.Err() != nil {
|
||||
t.Errorf("Conn has Err()=%v, expect nil", c.Err())
|
||||
}
|
||||
_, err = c.Do("SET", "key", "val")
|
||||
if err != nil {
|
||||
t.Errorf("Do(SET, key, val) returned error %v, expected nil.", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestReadTimeout(t *testing.T) {
|
||||
l, err := net.Listen("tcp", "127.0.0.1:0")
|
||||
if err != nil {
|
||||
t.Fatalf("net.Listen returned %v", err)
|
||||
}
|
||||
defer l.Close()
|
||||
|
||||
go func() {
|
||||
for {
|
||||
c, err := l.Accept()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
go func() {
|
||||
time.Sleep(time.Second)
|
||||
c.Write([]byte("+OK\r\n"))
|
||||
c.Close()
|
||||
}()
|
||||
}
|
||||
}()
|
||||
|
||||
// Do
|
||||
|
||||
c1, err := redis.Dial(l.Addr().Network(), l.Addr().String(), redis.DialReadTimeout(time.Millisecond))
|
||||
if err != nil {
|
||||
t.Fatalf("redis.Dial returned %v", err)
|
||||
}
|
||||
defer c1.Close()
|
||||
|
||||
_, err = c1.Do("PING")
|
||||
if err == nil {
|
||||
t.Fatalf("c1.Do() returned nil, expect error")
|
||||
}
|
||||
if c1.Err() == nil {
|
||||
t.Fatalf("c1.Err() = nil, expect error")
|
||||
}
|
||||
|
||||
// Send/Flush/Receive
|
||||
|
||||
c2, err := redis.Dial(l.Addr().Network(), l.Addr().String(), redis.DialReadTimeout(time.Millisecond))
|
||||
if err != nil {
|
||||
t.Fatalf("redis.Dial returned %v", err)
|
||||
}
|
||||
defer c2.Close()
|
||||
|
||||
c2.Send("PING")
|
||||
c2.Flush()
|
||||
_, err = c2.Receive()
|
||||
if err == nil {
|
||||
t.Fatalf("c2.Receive() returned nil, expect error")
|
||||
}
|
||||
if c2.Err() == nil {
|
||||
t.Fatalf("c2.Err() = nil, expect error")
|
||||
}
|
||||
}
|
||||
|
||||
var dialErrors = []struct {
|
||||
rawurl string
|
||||
expectedError string
|
||||
}{
|
||||
{
|
||||
"localhost",
|
||||
"invalid redis URL scheme",
|
||||
},
|
||||
// The error message for invalid hosts is diffferent in different
|
||||
// versions of Go, so just check that there is an error message.
|
||||
{
|
||||
"redis://weird url",
|
||||
"",
|
||||
},
|
||||
{
|
||||
"redis://foo:bar:baz",
|
||||
"",
|
||||
},
|
||||
{
|
||||
"http://www.google.com",
|
||||
"invalid redis URL scheme: http",
|
||||
},
|
||||
{
|
||||
"redis://localhost:6379/abc123",
|
||||
"invalid database: abc123",
|
||||
},
|
||||
}
|
||||
|
||||
func TestDialURLErrors(t *testing.T) {
|
||||
for _, d := range dialErrors {
|
||||
_, err := redis.DialURL(d.rawurl)
|
||||
if err == nil || !strings.Contains(err.Error(), d.expectedError) {
|
||||
t.Errorf("DialURL did not return expected error (expected %v to contain %s)", err, d.expectedError)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestDialURLPort(t *testing.T) {
|
||||
checkPort := func(network, address string) (net.Conn, error) {
|
||||
if address != "localhost:6379" {
|
||||
t.Errorf("DialURL did not set port to 6379 by default (got %v)", address)
|
||||
}
|
||||
return nil, nil
|
||||
}
|
||||
_, err := redis.DialURL("redis://localhost", redis.DialNetDial(checkPort))
|
||||
if err != nil {
|
||||
t.Error("dial error:", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestDialURLHost(t *testing.T) {
|
||||
checkHost := func(network, address string) (net.Conn, error) {
|
||||
if address != "localhost:6379" {
|
||||
t.Errorf("DialURL did not set host to localhost by default (got %v)", address)
|
||||
}
|
||||
return nil, nil
|
||||
}
|
||||
_, err := redis.DialURL("redis://:6379", redis.DialNetDial(checkHost))
|
||||
if err != nil {
|
||||
t.Error("dial error:", err)
|
||||
}
|
||||
}
|
||||
|
||||
func TestDialURLPassword(t *testing.T) {
|
||||
var buf bytes.Buffer
|
||||
_, err := redis.DialURL("redis://x:abc123@localhost", dialTestConn(strings.NewReader("+OK\r\n"), &buf))
|
||||
if err != nil {
|
||||
t.Error("dial error:", err)
|
||||
}
|
||||
expected := "*2\r\n$4\r\nAUTH\r\n$6\r\nabc123\r\n"
|
||||
actual := buf.String()
|
||||
if actual != expected {
|
||||
t.Errorf("commands = %q, want %q", actual, expected)
|
||||
}
|
||||
}
|
||||
|
||||
func TestDialURLDatabase(t *testing.T) {
|
||||
var buf3 bytes.Buffer
|
||||
_, err3 := redis.DialURL("redis://localhost/3", dialTestConn(strings.NewReader("+OK\r\n"), &buf3))
|
||||
if err3 != nil {
|
||||
t.Error("dial error:", err3)
|
||||
}
|
||||
expected3 := "*2\r\n$6\r\nSELECT\r\n$1\r\n3\r\n"
|
||||
actual3 := buf3.String()
|
||||
if actual3 != expected3 {
|
||||
t.Errorf("commands = %q, want %q", actual3, expected3)
|
||||
}
|
||||
// empty DB means 0
|
||||
var buf0 bytes.Buffer
|
||||
_, err0 := redis.DialURL("redis://localhost/", dialTestConn(strings.NewReader("+OK\r\n"), &buf0))
|
||||
if err0 != nil {
|
||||
t.Error("dial error:", err0)
|
||||
}
|
||||
expected0 := ""
|
||||
actual0 := buf0.String()
|
||||
if actual0 != expected0 {
|
||||
t.Errorf("commands = %q, want %q", actual0, expected0)
|
||||
}
|
||||
}
|
||||
|
||||
// Connect to local instance of Redis running on the default port.
|
||||
func ExampleDial() {
|
||||
c, err := redis.Dial("tcp", ":6379")
|
||||
if err != nil {
|
||||
// handle error
|
||||
}
|
||||
defer c.Close()
|
||||
}
|
||||
|
||||
// Connect to remote instance of Redis using a URL.
|
||||
func ExampleDialURL() {
|
||||
c, err := redis.DialURL(os.Getenv("REDIS_URL"))
|
||||
if err != nil {
|
||||
// handle connection error
|
||||
}
|
||||
defer c.Close()
|
||||
}
|
||||
|
||||
// TextExecError tests handling of errors in a transaction. See
|
||||
// http://redis.io/topics/transactions for information on how Redis handles
|
||||
// errors in a transaction.
|
||||
func TestExecError(t *testing.T) {
|
||||
c, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
// Execute commands that fail before EXEC is called.
|
||||
|
||||
c.Do("DEL", "k0")
|
||||
c.Do("ZADD", "k0", 0, 0)
|
||||
c.Send("MULTI")
|
||||
c.Send("NOTACOMMAND", "k0", 0, 0)
|
||||
c.Send("ZINCRBY", "k0", 0, 0)
|
||||
v, err := c.Do("EXEC")
|
||||
if err == nil {
|
||||
t.Fatalf("EXEC returned values %v, expected error", v)
|
||||
}
|
||||
|
||||
// Execute commands that fail after EXEC is called. The first command
|
||||
// returns an error.
|
||||
|
||||
c.Do("DEL", "k1")
|
||||
c.Do("ZADD", "k1", 0, 0)
|
||||
c.Send("MULTI")
|
||||
c.Send("HSET", "k1", 0, 0)
|
||||
c.Send("ZINCRBY", "k1", 0, 0)
|
||||
v, err = c.Do("EXEC")
|
||||
if err != nil {
|
||||
t.Fatalf("EXEC returned error %v", err)
|
||||
}
|
||||
|
||||
vs, err := redis.Values(v, nil)
|
||||
if err != nil {
|
||||
t.Fatalf("Values(v) returned error %v", err)
|
||||
}
|
||||
|
||||
if len(vs) != 2 {
|
||||
t.Fatalf("len(vs) == %d, want 2", len(vs))
|
||||
}
|
||||
|
||||
if _, ok := vs[0].(error); !ok {
|
||||
t.Fatalf("first result is type %T, expected error", vs[0])
|
||||
}
|
||||
|
||||
if _, ok := vs[1].([]byte); !ok {
|
||||
t.Fatalf("second result is type %T, expected []byte", vs[1])
|
||||
}
|
||||
|
||||
// Execute commands that fail after EXEC is called. The second command
|
||||
// returns an error.
|
||||
|
||||
c.Do("ZADD", "k2", 0, 0)
|
||||
c.Send("MULTI")
|
||||
c.Send("ZINCRBY", "k2", 0, 0)
|
||||
c.Send("HSET", "k2", 0, 0)
|
||||
v, err = c.Do("EXEC")
|
||||
if err != nil {
|
||||
t.Fatalf("EXEC returned error %v", err)
|
||||
}
|
||||
|
||||
vs, err = redis.Values(v, nil)
|
||||
if err != nil {
|
||||
t.Fatalf("Values(v) returned error %v", err)
|
||||
}
|
||||
|
||||
if len(vs) != 2 {
|
||||
t.Fatalf("len(vs) == %d, want 2", len(vs))
|
||||
}
|
||||
|
||||
if _, ok := vs[0].([]byte); !ok {
|
||||
t.Fatalf("first result is type %T, expected []byte", vs[0])
|
||||
}
|
||||
|
||||
if _, ok := vs[1].(error); !ok {
|
||||
t.Fatalf("second result is type %T, expected error", vs[2])
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkDoEmpty(b *testing.B) {
|
||||
b.StopTimer()
|
||||
c, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
defer c.Close()
|
||||
b.StartTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
if _, err := c.Do(""); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkDoPing(b *testing.B) {
|
||||
b.StopTimer()
|
||||
c, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
defer c.Close()
|
||||
b.StartTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
if _, err := c.Do("PING"); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
}
|
||||
}
|
169
vendor/github.com/garyburd/redigo/redis/doc.go
generated
vendored
169
vendor/github.com/garyburd/redigo/redis/doc.go
generated
vendored
@ -1,169 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
// Package redis is a client for the Redis database.
|
||||
//
|
||||
// The Redigo FAQ (https://github.com/garyburd/redigo/wiki/FAQ) contains more
|
||||
// documentation about this package.
|
||||
//
|
||||
// Connections
|
||||
//
|
||||
// The Conn interface is the primary interface for working with Redis.
|
||||
// Applications create connections by calling the Dial, DialWithTimeout or
|
||||
// NewConn functions. In the future, functions will be added for creating
|
||||
// sharded and other types of connections.
|
||||
//
|
||||
// The application must call the connection Close method when the application
|
||||
// is done with the connection.
|
||||
//
|
||||
// Executing Commands
|
||||
//
|
||||
// The Conn interface has a generic method for executing Redis commands:
|
||||
//
|
||||
// Do(commandName string, args ...interface{}) (reply interface{}, err error)
|
||||
//
|
||||
// The Redis command reference (http://redis.io/commands) lists the available
|
||||
// commands. An example of using the Redis APPEND command is:
|
||||
//
|
||||
// n, err := conn.Do("APPEND", "key", "value")
|
||||
//
|
||||
// The Do method converts command arguments to binary strings for transmission
|
||||
// to the server as follows:
|
||||
//
|
||||
// Go Type Conversion
|
||||
// []byte Sent as is
|
||||
// string Sent as is
|
||||
// int, int64 strconv.FormatInt(v)
|
||||
// float64 strconv.FormatFloat(v, 'g', -1, 64)
|
||||
// bool true -> "1", false -> "0"
|
||||
// nil ""
|
||||
// all other types fmt.Print(v)
|
||||
//
|
||||
// Redis command reply types are represented using the following Go types:
|
||||
//
|
||||
// Redis type Go type
|
||||
// error redis.Error
|
||||
// integer int64
|
||||
// simple string string
|
||||
// bulk string []byte or nil if value not present.
|
||||
// array []interface{} or nil if value not present.
|
||||
//
|
||||
// Use type assertions or the reply helper functions to convert from
|
||||
// interface{} to the specific Go type for the command result.
|
||||
//
|
||||
// Pipelining
|
||||
//
|
||||
// Connections support pipelining using the Send, Flush and Receive methods.
|
||||
//
|
||||
// Send(commandName string, args ...interface{}) error
|
||||
// Flush() error
|
||||
// Receive() (reply interface{}, err error)
|
||||
//
|
||||
// Send writes the command to the connection's output buffer. Flush flushes the
|
||||
// connection's output buffer to the server. Receive reads a single reply from
|
||||
// the server. The following example shows a simple pipeline.
|
||||
//
|
||||
// c.Send("SET", "foo", "bar")
|
||||
// c.Send("GET", "foo")
|
||||
// c.Flush()
|
||||
// c.Receive() // reply from SET
|
||||
// v, err = c.Receive() // reply from GET
|
||||
//
|
||||
// The Do method combines the functionality of the Send, Flush and Receive
|
||||
// methods. The Do method starts by writing the command and flushing the output
|
||||
// buffer. Next, the Do method receives all pending replies including the reply
|
||||
// for the command just sent by Do. If any of the received replies is an error,
|
||||
// then Do returns the error. If there are no errors, then Do returns the last
|
||||
// reply. If the command argument to the Do method is "", then the Do method
|
||||
// will flush the output buffer and receive pending replies without sending a
|
||||
// command.
|
||||
//
|
||||
// Use the Send and Do methods to implement pipelined transactions.
|
||||
//
|
||||
// c.Send("MULTI")
|
||||
// c.Send("INCR", "foo")
|
||||
// c.Send("INCR", "bar")
|
||||
// r, err := c.Do("EXEC")
|
||||
// fmt.Println(r) // prints [1, 1]
|
||||
//
|
||||
// Concurrency
|
||||
//
|
||||
// Connections do not support concurrent calls to the write methods (Send,
|
||||
// Flush) or concurrent calls to the read method (Receive). Connections do
|
||||
// allow a concurrent reader and writer.
|
||||
//
|
||||
// Because the Do method combines the functionality of Send, Flush and Receive,
|
||||
// the Do method cannot be called concurrently with the other methods.
|
||||
//
|
||||
// For full concurrent access to Redis, use the thread-safe Pool to get and
|
||||
// release connections from within a goroutine.
|
||||
//
|
||||
// Publish and Subscribe
|
||||
//
|
||||
// Use the Send, Flush and Receive methods to implement Pub/Sub subscribers.
|
||||
//
|
||||
// c.Send("SUBSCRIBE", "example")
|
||||
// c.Flush()
|
||||
// for {
|
||||
// reply, err := c.Receive()
|
||||
// if err != nil {
|
||||
// return err
|
||||
// }
|
||||
// // process pushed message
|
||||
// }
|
||||
//
|
||||
// The PubSubConn type wraps a Conn with convenience methods for implementing
|
||||
// subscribers. The Subscribe, PSubscribe, Unsubscribe and PUnsubscribe methods
|
||||
// send and flush a subscription management command. The receive method
|
||||
// converts a pushed message to convenient types for use in a type switch.
|
||||
//
|
||||
// psc := redis.PubSubConn{c}
|
||||
// psc.Subscribe("example")
|
||||
// for {
|
||||
// switch v := psc.Receive().(type) {
|
||||
// case redis.Message:
|
||||
// fmt.Printf("%s: message: %s\n", v.Channel, v.Data)
|
||||
// case redis.Subscription:
|
||||
// fmt.Printf("%s: %s %d\n", v.Channel, v.Kind, v.Count)
|
||||
// case error:
|
||||
// return v
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// Reply Helpers
|
||||
//
|
||||
// The Bool, Int, Bytes, String, Strings and Values functions convert a reply
|
||||
// to a value of a specific type. To allow convenient wrapping of calls to the
|
||||
// connection Do and Receive methods, the functions take a second argument of
|
||||
// type error. If the error is non-nil, then the helper function returns the
|
||||
// error. If the error is nil, the function converts the reply to the specified
|
||||
// type:
|
||||
//
|
||||
// exists, err := redis.Bool(c.Do("EXISTS", "foo"))
|
||||
// if err != nil {
|
||||
// // handle error return from c.Do or type conversion error.
|
||||
// }
|
||||
//
|
||||
// The Scan function converts elements of a array reply to Go types:
|
||||
//
|
||||
// var value1 int
|
||||
// var value2 string
|
||||
// reply, err := redis.Values(c.Do("MGET", "key1", "key2"))
|
||||
// if err != nil {
|
||||
// // handle error
|
||||
// }
|
||||
// if _, err := redis.Scan(reply, &value1, &value2); err != nil {
|
||||
// // handle error
|
||||
// }
|
||||
package redis // import "github.com/garyburd/redigo/redis"
|
117
vendor/github.com/garyburd/redigo/redis/log.go
generated
vendored
117
vendor/github.com/garyburd/redigo/redis/log.go
generated
vendored
@ -1,117 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"log"
|
||||
)
|
||||
|
||||
// NewLoggingConn returns a logging wrapper around a connection.
|
||||
func NewLoggingConn(conn Conn, logger *log.Logger, prefix string) Conn {
|
||||
if prefix != "" {
|
||||
prefix = prefix + "."
|
||||
}
|
||||
return &loggingConn{conn, logger, prefix}
|
||||
}
|
||||
|
||||
type loggingConn struct {
|
||||
Conn
|
||||
logger *log.Logger
|
||||
prefix string
|
||||
}
|
||||
|
||||
func (c *loggingConn) Close() error {
|
||||
err := c.Conn.Close()
|
||||
var buf bytes.Buffer
|
||||
fmt.Fprintf(&buf, "%sClose() -> (%v)", c.prefix, err)
|
||||
c.logger.Output(2, buf.String())
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *loggingConn) printValue(buf *bytes.Buffer, v interface{}) {
|
||||
const chop = 32
|
||||
switch v := v.(type) {
|
||||
case []byte:
|
||||
if len(v) > chop {
|
||||
fmt.Fprintf(buf, "%q...", v[:chop])
|
||||
} else {
|
||||
fmt.Fprintf(buf, "%q", v)
|
||||
}
|
||||
case string:
|
||||
if len(v) > chop {
|
||||
fmt.Fprintf(buf, "%q...", v[:chop])
|
||||
} else {
|
||||
fmt.Fprintf(buf, "%q", v)
|
||||
}
|
||||
case []interface{}:
|
||||
if len(v) == 0 {
|
||||
buf.WriteString("[]")
|
||||
} else {
|
||||
sep := "["
|
||||
fin := "]"
|
||||
if len(v) > chop {
|
||||
v = v[:chop]
|
||||
fin = "...]"
|
||||
}
|
||||
for _, vv := range v {
|
||||
buf.WriteString(sep)
|
||||
c.printValue(buf, vv)
|
||||
sep = ", "
|
||||
}
|
||||
buf.WriteString(fin)
|
||||
}
|
||||
default:
|
||||
fmt.Fprint(buf, v)
|
||||
}
|
||||
}
|
||||
|
||||
func (c *loggingConn) print(method, commandName string, args []interface{}, reply interface{}, err error) {
|
||||
var buf bytes.Buffer
|
||||
fmt.Fprintf(&buf, "%s%s(", c.prefix, method)
|
||||
if method != "Receive" {
|
||||
buf.WriteString(commandName)
|
||||
for _, arg := range args {
|
||||
buf.WriteString(", ")
|
||||
c.printValue(&buf, arg)
|
||||
}
|
||||
}
|
||||
buf.WriteString(") -> (")
|
||||
if method != "Send" {
|
||||
c.printValue(&buf, reply)
|
||||
buf.WriteString(", ")
|
||||
}
|
||||
fmt.Fprintf(&buf, "%v)", err)
|
||||
c.logger.Output(3, buf.String())
|
||||
}
|
||||
|
||||
func (c *loggingConn) Do(commandName string, args ...interface{}) (interface{}, error) {
|
||||
reply, err := c.Conn.Do(commandName, args...)
|
||||
c.print("Do", commandName, args, reply, err)
|
||||
return reply, err
|
||||
}
|
||||
|
||||
func (c *loggingConn) Send(commandName string, args ...interface{}) error {
|
||||
err := c.Conn.Send(commandName, args...)
|
||||
c.print("Send", commandName, args, nil, err)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *loggingConn) Receive() (interface{}, error) {
|
||||
reply, err := c.Conn.Receive()
|
||||
c.print("Receive", "", nil, reply, err)
|
||||
return reply, err
|
||||
}
|
393
vendor/github.com/garyburd/redigo/redis/pool.go
generated
vendored
393
vendor/github.com/garyburd/redigo/redis/pool.go
generated
vendored
@ -1,393 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"container/list"
|
||||
"crypto/rand"
|
||||
"crypto/sha1"
|
||||
"errors"
|
||||
"io"
|
||||
"strconv"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
"github.com/garyburd/redigo/internal"
|
||||
)
|
||||
|
||||
var nowFunc = time.Now // for testing
|
||||
|
||||
// ErrPoolExhausted is returned from a pool connection method (Do, Send,
|
||||
// Receive, Flush, Err) when the maximum number of database connections in the
|
||||
// pool has been reached.
|
||||
var ErrPoolExhausted = errors.New("redigo: connection pool exhausted")
|
||||
|
||||
var (
|
||||
errPoolClosed = errors.New("redigo: connection pool closed")
|
||||
errConnClosed = errors.New("redigo: connection closed")
|
||||
)
|
||||
|
||||
// Pool maintains a pool of connections. The application calls the Get method
|
||||
// to get a connection from the pool and the connection's Close method to
|
||||
// return the connection's resources to the pool.
|
||||
//
|
||||
// The following example shows how to use a pool in a web application. The
|
||||
// application creates a pool at application startup and makes it available to
|
||||
// request handlers using a global variable.
|
||||
//
|
||||
// func newPool(server, password string) *redis.Pool {
|
||||
// return &redis.Pool{
|
||||
// MaxIdle: 3,
|
||||
// IdleTimeout: 240 * time.Second,
|
||||
// Dial: func () (redis.Conn, error) {
|
||||
// c, err := redis.Dial("tcp", server)
|
||||
// if err != nil {
|
||||
// return nil, err
|
||||
// }
|
||||
// if _, err := c.Do("AUTH", password); err != nil {
|
||||
// c.Close()
|
||||
// return nil, err
|
||||
// }
|
||||
// return c, err
|
||||
// },
|
||||
// TestOnBorrow: func(c redis.Conn, t time.Time) error {
|
||||
// _, err := c.Do("PING")
|
||||
// return err
|
||||
// },
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// var (
|
||||
// pool *redis.Pool
|
||||
// redisServer = flag.String("redisServer", ":6379", "")
|
||||
// redisPassword = flag.String("redisPassword", "", "")
|
||||
// )
|
||||
//
|
||||
// func main() {
|
||||
// flag.Parse()
|
||||
// pool = newPool(*redisServer, *redisPassword)
|
||||
// ...
|
||||
// }
|
||||
//
|
||||
// A request handler gets a connection from the pool and closes the connection
|
||||
// when the handler is done:
|
||||
//
|
||||
// func serveHome(w http.ResponseWriter, r *http.Request) {
|
||||
// conn := pool.Get()
|
||||
// defer conn.Close()
|
||||
// ....
|
||||
// }
|
||||
//
|
||||
type Pool struct {
|
||||
|
||||
// Dial is an application supplied function for creating and configuring a
|
||||
// connection.
|
||||
//
|
||||
// The connection returned from Dial must not be in a special state
|
||||
// (subscribed to pubsub channel, transaction started, ...).
|
||||
Dial func() (Conn, error)
|
||||
|
||||
// TestOnBorrow is an optional application supplied function for checking
|
||||
// the health of an idle connection before the connection is used again by
|
||||
// the application. Argument t is the time that the connection was returned
|
||||
// to the pool. If the function returns an error, then the connection is
|
||||
// closed.
|
||||
TestOnBorrow func(c Conn, t time.Time) error
|
||||
|
||||
// Maximum number of idle connections in the pool.
|
||||
MaxIdle int
|
||||
|
||||
// Maximum number of connections allocated by the pool at a given time.
|
||||
// When zero, there is no limit on the number of connections in the pool.
|
||||
MaxActive int
|
||||
|
||||
// Close connections after remaining idle for this duration. If the value
|
||||
// is zero, then idle connections are not closed. Applications should set
|
||||
// the timeout to a value less than the server's timeout.
|
||||
IdleTimeout time.Duration
|
||||
|
||||
// If Wait is true and the pool is at the MaxActive limit, then Get() waits
|
||||
// for a connection to be returned to the pool before returning.
|
||||
Wait bool
|
||||
|
||||
// mu protects fields defined below.
|
||||
mu sync.Mutex
|
||||
cond *sync.Cond
|
||||
closed bool
|
||||
active int
|
||||
|
||||
// Stack of idleConn with most recently used at the front.
|
||||
idle list.List
|
||||
}
|
||||
|
||||
type idleConn struct {
|
||||
c Conn
|
||||
t time.Time
|
||||
}
|
||||
|
||||
// NewPool creates a new pool.
|
||||
//
|
||||
// Deprecated: Initialize the Pool directory as shown in the example.
|
||||
func NewPool(newFn func() (Conn, error), maxIdle int) *Pool {
|
||||
return &Pool{Dial: newFn, MaxIdle: maxIdle}
|
||||
}
|
||||
|
||||
// Get gets a connection. The application must close the returned connection.
|
||||
// This method always returns a valid connection so that applications can defer
|
||||
// error handling to the first use of the connection. If there is an error
|
||||
// getting an underlying connection, then the connection Err, Do, Send, Flush
|
||||
// and Receive methods return that error.
|
||||
func (p *Pool) Get() Conn {
|
||||
c, err := p.get()
|
||||
if err != nil {
|
||||
return errorConnection{err}
|
||||
}
|
||||
return &pooledConnection{p: p, c: c}
|
||||
}
|
||||
|
||||
// ActiveCount returns the number of active connections in the pool.
|
||||
func (p *Pool) ActiveCount() int {
|
||||
p.mu.Lock()
|
||||
active := p.active
|
||||
p.mu.Unlock()
|
||||
return active
|
||||
}
|
||||
|
||||
// Close releases the resources used by the pool.
|
||||
func (p *Pool) Close() error {
|
||||
p.mu.Lock()
|
||||
idle := p.idle
|
||||
p.idle.Init()
|
||||
p.closed = true
|
||||
p.active -= idle.Len()
|
||||
if p.cond != nil {
|
||||
p.cond.Broadcast()
|
||||
}
|
||||
p.mu.Unlock()
|
||||
for e := idle.Front(); e != nil; e = e.Next() {
|
||||
e.Value.(idleConn).c.Close()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// release decrements the active count and signals waiters. The caller must
|
||||
// hold p.mu during the call.
|
||||
func (p *Pool) release() {
|
||||
p.active -= 1
|
||||
if p.cond != nil {
|
||||
p.cond.Signal()
|
||||
}
|
||||
}
|
||||
|
||||
// get prunes stale connections and returns a connection from the idle list or
|
||||
// creates a new connection.
|
||||
func (p *Pool) get() (Conn, error) {
|
||||
p.mu.Lock()
|
||||
|
||||
// Prune stale connections.
|
||||
|
||||
if timeout := p.IdleTimeout; timeout > 0 {
|
||||
for i, n := 0, p.idle.Len(); i < n; i++ {
|
||||
e := p.idle.Back()
|
||||
if e == nil {
|
||||
break
|
||||
}
|
||||
ic := e.Value.(idleConn)
|
||||
if ic.t.Add(timeout).After(nowFunc()) {
|
||||
break
|
||||
}
|
||||
p.idle.Remove(e)
|
||||
p.release()
|
||||
p.mu.Unlock()
|
||||
ic.c.Close()
|
||||
p.mu.Lock()
|
||||
}
|
||||
}
|
||||
|
||||
for {
|
||||
|
||||
// Get idle connection.
|
||||
|
||||
for i, n := 0, p.idle.Len(); i < n; i++ {
|
||||
e := p.idle.Front()
|
||||
if e == nil {
|
||||
break
|
||||
}
|
||||
ic := e.Value.(idleConn)
|
||||
p.idle.Remove(e)
|
||||
test := p.TestOnBorrow
|
||||
p.mu.Unlock()
|
||||
if test == nil || test(ic.c, ic.t) == nil {
|
||||
return ic.c, nil
|
||||
}
|
||||
ic.c.Close()
|
||||
p.mu.Lock()
|
||||
p.release()
|
||||
}
|
||||
|
||||
// Check for pool closed before dialing a new connection.
|
||||
|
||||
if p.closed {
|
||||
p.mu.Unlock()
|
||||
return nil, errors.New("redigo: get on closed pool")
|
||||
}
|
||||
|
||||
// Dial new connection if under limit.
|
||||
|
||||
if p.MaxActive == 0 || p.active < p.MaxActive {
|
||||
dial := p.Dial
|
||||
p.active += 1
|
||||
p.mu.Unlock()
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
p.mu.Lock()
|
||||
p.release()
|
||||
p.mu.Unlock()
|
||||
c = nil
|
||||
}
|
||||
return c, err
|
||||
}
|
||||
|
||||
if !p.Wait {
|
||||
p.mu.Unlock()
|
||||
return nil, ErrPoolExhausted
|
||||
}
|
||||
|
||||
if p.cond == nil {
|
||||
p.cond = sync.NewCond(&p.mu)
|
||||
}
|
||||
p.cond.Wait()
|
||||
}
|
||||
}
|
||||
|
||||
func (p *Pool) put(c Conn, forceClose bool) error {
|
||||
err := c.Err()
|
||||
p.mu.Lock()
|
||||
if !p.closed && err == nil && !forceClose {
|
||||
p.idle.PushFront(idleConn{t: nowFunc(), c: c})
|
||||
if p.idle.Len() > p.MaxIdle {
|
||||
c = p.idle.Remove(p.idle.Back()).(idleConn).c
|
||||
} else {
|
||||
c = nil
|
||||
}
|
||||
}
|
||||
|
||||
if c == nil {
|
||||
if p.cond != nil {
|
||||
p.cond.Signal()
|
||||
}
|
||||
p.mu.Unlock()
|
||||
return nil
|
||||
}
|
||||
|
||||
p.release()
|
||||
p.mu.Unlock()
|
||||
return c.Close()
|
||||
}
|
||||
|
||||
type pooledConnection struct {
|
||||
p *Pool
|
||||
c Conn
|
||||
state int
|
||||
}
|
||||
|
||||
var (
|
||||
sentinel []byte
|
||||
sentinelOnce sync.Once
|
||||
)
|
||||
|
||||
func initSentinel() {
|
||||
p := make([]byte, 64)
|
||||
if _, err := rand.Read(p); err == nil {
|
||||
sentinel = p
|
||||
} else {
|
||||
h := sha1.New()
|
||||
io.WriteString(h, "Oops, rand failed. Use time instead.")
|
||||
io.WriteString(h, strconv.FormatInt(time.Now().UnixNano(), 10))
|
||||
sentinel = h.Sum(nil)
|
||||
}
|
||||
}
|
||||
|
||||
func (pc *pooledConnection) Close() error {
|
||||
c := pc.c
|
||||
if _, ok := c.(errorConnection); ok {
|
||||
return nil
|
||||
}
|
||||
pc.c = errorConnection{errConnClosed}
|
||||
|
||||
if pc.state&internal.MultiState != 0 {
|
||||
c.Send("DISCARD")
|
||||
pc.state &^= (internal.MultiState | internal.WatchState)
|
||||
} else if pc.state&internal.WatchState != 0 {
|
||||
c.Send("UNWATCH")
|
||||
pc.state &^= internal.WatchState
|
||||
}
|
||||
if pc.state&internal.SubscribeState != 0 {
|
||||
c.Send("UNSUBSCRIBE")
|
||||
c.Send("PUNSUBSCRIBE")
|
||||
// To detect the end of the message stream, ask the server to echo
|
||||
// a sentinel value and read until we see that value.
|
||||
sentinelOnce.Do(initSentinel)
|
||||
c.Send("ECHO", sentinel)
|
||||
c.Flush()
|
||||
for {
|
||||
p, err := c.Receive()
|
||||
if err != nil {
|
||||
break
|
||||
}
|
||||
if p, ok := p.([]byte); ok && bytes.Equal(p, sentinel) {
|
||||
pc.state &^= internal.SubscribeState
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
c.Do("")
|
||||
pc.p.put(c, pc.state != 0)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (pc *pooledConnection) Err() error {
|
||||
return pc.c.Err()
|
||||
}
|
||||
|
||||
func (pc *pooledConnection) Do(commandName string, args ...interface{}) (reply interface{}, err error) {
|
||||
ci := internal.LookupCommandInfo(commandName)
|
||||
pc.state = (pc.state | ci.Set) &^ ci.Clear
|
||||
return pc.c.Do(commandName, args...)
|
||||
}
|
||||
|
||||
func (pc *pooledConnection) Send(commandName string, args ...interface{}) error {
|
||||
ci := internal.LookupCommandInfo(commandName)
|
||||
pc.state = (pc.state | ci.Set) &^ ci.Clear
|
||||
return pc.c.Send(commandName, args...)
|
||||
}
|
||||
|
||||
func (pc *pooledConnection) Flush() error {
|
||||
return pc.c.Flush()
|
||||
}
|
||||
|
||||
func (pc *pooledConnection) Receive() (reply interface{}, err error) {
|
||||
return pc.c.Receive()
|
||||
}
|
||||
|
||||
type errorConnection struct{ err error }
|
||||
|
||||
func (ec errorConnection) Do(string, ...interface{}) (interface{}, error) { return nil, ec.err }
|
||||
func (ec errorConnection) Send(string, ...interface{}) error { return ec.err }
|
||||
func (ec errorConnection) Err() error { return ec.err }
|
||||
func (ec errorConnection) Close() error { return ec.err }
|
||||
func (ec errorConnection) Flush() error { return ec.err }
|
||||
func (ec errorConnection) Receive() (interface{}, error) { return nil, ec.err }
|
684
vendor/github.com/garyburd/redigo/redis/pool_test.go
generated
vendored
684
vendor/github.com/garyburd/redigo/redis/pool_test.go
generated
vendored
@ -1,684 +0,0 @@
|
||||
// Copyright 2011 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis_test
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"io"
|
||||
"reflect"
|
||||
"sync"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/garyburd/redigo/redis"
|
||||
)
|
||||
|
||||
type poolTestConn struct {
|
||||
d *poolDialer
|
||||
err error
|
||||
redis.Conn
|
||||
}
|
||||
|
||||
func (c *poolTestConn) Close() error {
|
||||
c.d.mu.Lock()
|
||||
c.d.open -= 1
|
||||
c.d.mu.Unlock()
|
||||
return c.Conn.Close()
|
||||
}
|
||||
|
||||
func (c *poolTestConn) Err() error { return c.err }
|
||||
|
||||
func (c *poolTestConn) Do(commandName string, args ...interface{}) (interface{}, error) {
|
||||
if commandName == "ERR" {
|
||||
c.err = args[0].(error)
|
||||
commandName = "PING"
|
||||
}
|
||||
if commandName != "" {
|
||||
c.d.commands = append(c.d.commands, commandName)
|
||||
}
|
||||
return c.Conn.Do(commandName, args...)
|
||||
}
|
||||
|
||||
func (c *poolTestConn) Send(commandName string, args ...interface{}) error {
|
||||
c.d.commands = append(c.d.commands, commandName)
|
||||
return c.Conn.Send(commandName, args...)
|
||||
}
|
||||
|
||||
type poolDialer struct {
|
||||
mu sync.Mutex
|
||||
t *testing.T
|
||||
dialed int
|
||||
open int
|
||||
commands []string
|
||||
dialErr error
|
||||
}
|
||||
|
||||
func (d *poolDialer) dial() (redis.Conn, error) {
|
||||
d.mu.Lock()
|
||||
d.dialed += 1
|
||||
dialErr := d.dialErr
|
||||
d.mu.Unlock()
|
||||
if dialErr != nil {
|
||||
return nil, d.dialErr
|
||||
}
|
||||
c, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
d.mu.Lock()
|
||||
d.open += 1
|
||||
d.mu.Unlock()
|
||||
return &poolTestConn{d: d, Conn: c}, nil
|
||||
}
|
||||
|
||||
func (d *poolDialer) check(message string, p *redis.Pool, dialed, open int) {
|
||||
d.mu.Lock()
|
||||
if d.dialed != dialed {
|
||||
d.t.Errorf("%s: dialed=%d, want %d", message, d.dialed, dialed)
|
||||
}
|
||||
if d.open != open {
|
||||
d.t.Errorf("%s: open=%d, want %d", message, d.open, open)
|
||||
}
|
||||
if active := p.ActiveCount(); active != open {
|
||||
d.t.Errorf("%s: active=%d, want %d", message, active, open)
|
||||
}
|
||||
d.mu.Unlock()
|
||||
}
|
||||
|
||||
func TestPoolReuse(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 2,
|
||||
Dial: d.dial,
|
||||
}
|
||||
|
||||
for i := 0; i < 10; i++ {
|
||||
c1 := p.Get()
|
||||
c1.Do("PING")
|
||||
c2 := p.Get()
|
||||
c2.Do("PING")
|
||||
c1.Close()
|
||||
c2.Close()
|
||||
}
|
||||
|
||||
d.check("before close", p, 2, 2)
|
||||
p.Close()
|
||||
d.check("after close", p, 2, 0)
|
||||
}
|
||||
|
||||
func TestPoolMaxIdle(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 2,
|
||||
Dial: d.dial,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
for i := 0; i < 10; i++ {
|
||||
c1 := p.Get()
|
||||
c1.Do("PING")
|
||||
c2 := p.Get()
|
||||
c2.Do("PING")
|
||||
c3 := p.Get()
|
||||
c3.Do("PING")
|
||||
c1.Close()
|
||||
c2.Close()
|
||||
c3.Close()
|
||||
}
|
||||
d.check("before close", p, 12, 2)
|
||||
p.Close()
|
||||
d.check("after close", p, 12, 0)
|
||||
}
|
||||
|
||||
func TestPoolError(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 2,
|
||||
Dial: d.dial,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c := p.Get()
|
||||
c.Do("ERR", io.EOF)
|
||||
if c.Err() == nil {
|
||||
t.Errorf("expected c.Err() != nil")
|
||||
}
|
||||
c.Close()
|
||||
|
||||
c = p.Get()
|
||||
c.Do("ERR", io.EOF)
|
||||
c.Close()
|
||||
|
||||
d.check(".", p, 2, 0)
|
||||
}
|
||||
|
||||
func TestPoolClose(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 2,
|
||||
Dial: d.dial,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c1 := p.Get()
|
||||
c1.Do("PING")
|
||||
c2 := p.Get()
|
||||
c2.Do("PING")
|
||||
c3 := p.Get()
|
||||
c3.Do("PING")
|
||||
|
||||
c1.Close()
|
||||
if _, err := c1.Do("PING"); err == nil {
|
||||
t.Errorf("expected error after connection closed")
|
||||
}
|
||||
|
||||
c2.Close()
|
||||
c2.Close()
|
||||
|
||||
p.Close()
|
||||
|
||||
d.check("after pool close", p, 3, 1)
|
||||
|
||||
if _, err := c1.Do("PING"); err == nil {
|
||||
t.Errorf("expected error after connection and pool closed")
|
||||
}
|
||||
|
||||
c3.Close()
|
||||
|
||||
d.check("after conn close", p, 3, 0)
|
||||
|
||||
c1 = p.Get()
|
||||
if _, err := c1.Do("PING"); err == nil {
|
||||
t.Errorf("expected error after pool closed")
|
||||
}
|
||||
}
|
||||
|
||||
func TestPoolTimeout(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 2,
|
||||
IdleTimeout: 300 * time.Second,
|
||||
Dial: d.dial,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
now := time.Now()
|
||||
redis.SetNowFunc(func() time.Time { return now })
|
||||
defer redis.SetNowFunc(time.Now)
|
||||
|
||||
c := p.Get()
|
||||
c.Do("PING")
|
||||
c.Close()
|
||||
|
||||
d.check("1", p, 1, 1)
|
||||
|
||||
now = now.Add(p.IdleTimeout)
|
||||
|
||||
c = p.Get()
|
||||
c.Do("PING")
|
||||
c.Close()
|
||||
|
||||
d.check("2", p, 2, 1)
|
||||
}
|
||||
|
||||
func TestPoolConcurrenSendReceive(t *testing.T) {
|
||||
p := &redis.Pool{
|
||||
Dial: redis.DialDefaultServer,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c := p.Get()
|
||||
done := make(chan error, 1)
|
||||
go func() {
|
||||
_, err := c.Receive()
|
||||
done <- err
|
||||
}()
|
||||
c.Send("PING")
|
||||
c.Flush()
|
||||
err := <-done
|
||||
if err != nil {
|
||||
t.Fatalf("Receive() returned error %v", err)
|
||||
}
|
||||
_, err = c.Do("")
|
||||
if err != nil {
|
||||
t.Fatalf("Do() returned error %v", err)
|
||||
}
|
||||
c.Close()
|
||||
}
|
||||
|
||||
func TestPoolBorrowCheck(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 2,
|
||||
Dial: d.dial,
|
||||
TestOnBorrow: func(redis.Conn, time.Time) error { return redis.Error("BLAH") },
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
for i := 0; i < 10; i++ {
|
||||
c := p.Get()
|
||||
c.Do("PING")
|
||||
c.Close()
|
||||
}
|
||||
d.check("1", p, 10, 1)
|
||||
}
|
||||
|
||||
func TestPoolMaxActive(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 2,
|
||||
MaxActive: 2,
|
||||
Dial: d.dial,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c1 := p.Get()
|
||||
c1.Do("PING")
|
||||
c2 := p.Get()
|
||||
c2.Do("PING")
|
||||
|
||||
d.check("1", p, 2, 2)
|
||||
|
||||
c3 := p.Get()
|
||||
if _, err := c3.Do("PING"); err != redis.ErrPoolExhausted {
|
||||
t.Errorf("expected pool exhausted")
|
||||
}
|
||||
|
||||
c3.Close()
|
||||
d.check("2", p, 2, 2)
|
||||
c2.Close()
|
||||
d.check("3", p, 2, 2)
|
||||
|
||||
c3 = p.Get()
|
||||
if _, err := c3.Do("PING"); err != nil {
|
||||
t.Errorf("expected good channel, err=%v", err)
|
||||
}
|
||||
c3.Close()
|
||||
|
||||
d.check("4", p, 2, 2)
|
||||
}
|
||||
|
||||
func TestPoolMonitorCleanup(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 2,
|
||||
MaxActive: 2,
|
||||
Dial: d.dial,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c := p.Get()
|
||||
c.Send("MONITOR")
|
||||
c.Close()
|
||||
|
||||
d.check("", p, 1, 0)
|
||||
}
|
||||
|
||||
func TestPoolPubSubCleanup(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 2,
|
||||
MaxActive: 2,
|
||||
Dial: d.dial,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c := p.Get()
|
||||
c.Send("SUBSCRIBE", "x")
|
||||
c.Close()
|
||||
|
||||
want := []string{"SUBSCRIBE", "UNSUBSCRIBE", "PUNSUBSCRIBE", "ECHO"}
|
||||
if !reflect.DeepEqual(d.commands, want) {
|
||||
t.Errorf("got commands %v, want %v", d.commands, want)
|
||||
}
|
||||
d.commands = nil
|
||||
|
||||
c = p.Get()
|
||||
c.Send("PSUBSCRIBE", "x*")
|
||||
c.Close()
|
||||
|
||||
want = []string{"PSUBSCRIBE", "UNSUBSCRIBE", "PUNSUBSCRIBE", "ECHO"}
|
||||
if !reflect.DeepEqual(d.commands, want) {
|
||||
t.Errorf("got commands %v, want %v", d.commands, want)
|
||||
}
|
||||
d.commands = nil
|
||||
}
|
||||
|
||||
func TestPoolTransactionCleanup(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 2,
|
||||
MaxActive: 2,
|
||||
Dial: d.dial,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c := p.Get()
|
||||
c.Do("WATCH", "key")
|
||||
c.Do("PING")
|
||||
c.Close()
|
||||
|
||||
want := []string{"WATCH", "PING", "UNWATCH"}
|
||||
if !reflect.DeepEqual(d.commands, want) {
|
||||
t.Errorf("got commands %v, want %v", d.commands, want)
|
||||
}
|
||||
d.commands = nil
|
||||
|
||||
c = p.Get()
|
||||
c.Do("WATCH", "key")
|
||||
c.Do("UNWATCH")
|
||||
c.Do("PING")
|
||||
c.Close()
|
||||
|
||||
want = []string{"WATCH", "UNWATCH", "PING"}
|
||||
if !reflect.DeepEqual(d.commands, want) {
|
||||
t.Errorf("got commands %v, want %v", d.commands, want)
|
||||
}
|
||||
d.commands = nil
|
||||
|
||||
c = p.Get()
|
||||
c.Do("WATCH", "key")
|
||||
c.Do("MULTI")
|
||||
c.Do("PING")
|
||||
c.Close()
|
||||
|
||||
want = []string{"WATCH", "MULTI", "PING", "DISCARD"}
|
||||
if !reflect.DeepEqual(d.commands, want) {
|
||||
t.Errorf("got commands %v, want %v", d.commands, want)
|
||||
}
|
||||
d.commands = nil
|
||||
|
||||
c = p.Get()
|
||||
c.Do("WATCH", "key")
|
||||
c.Do("MULTI")
|
||||
c.Do("DISCARD")
|
||||
c.Do("PING")
|
||||
c.Close()
|
||||
|
||||
want = []string{"WATCH", "MULTI", "DISCARD", "PING"}
|
||||
if !reflect.DeepEqual(d.commands, want) {
|
||||
t.Errorf("got commands %v, want %v", d.commands, want)
|
||||
}
|
||||
d.commands = nil
|
||||
|
||||
c = p.Get()
|
||||
c.Do("WATCH", "key")
|
||||
c.Do("MULTI")
|
||||
c.Do("EXEC")
|
||||
c.Do("PING")
|
||||
c.Close()
|
||||
|
||||
want = []string{"WATCH", "MULTI", "EXEC", "PING"}
|
||||
if !reflect.DeepEqual(d.commands, want) {
|
||||
t.Errorf("got commands %v, want %v", d.commands, want)
|
||||
}
|
||||
d.commands = nil
|
||||
}
|
||||
|
||||
func startGoroutines(p *redis.Pool, cmd string, args ...interface{}) chan error {
|
||||
errs := make(chan error, 10)
|
||||
for i := 0; i < cap(errs); i++ {
|
||||
go func() {
|
||||
c := p.Get()
|
||||
_, err := c.Do(cmd, args...)
|
||||
errs <- err
|
||||
c.Close()
|
||||
}()
|
||||
}
|
||||
|
||||
// Wait for goroutines to block.
|
||||
time.Sleep(time.Second / 4)
|
||||
|
||||
return errs
|
||||
}
|
||||
|
||||
func TestWaitPool(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 1,
|
||||
MaxActive: 1,
|
||||
Dial: d.dial,
|
||||
Wait: true,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c := p.Get()
|
||||
errs := startGoroutines(p, "PING")
|
||||
d.check("before close", p, 1, 1)
|
||||
c.Close()
|
||||
timeout := time.After(2 * time.Second)
|
||||
for i := 0; i < cap(errs); i++ {
|
||||
select {
|
||||
case err := <-errs:
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
case <-timeout:
|
||||
t.Fatalf("timeout waiting for blocked goroutine %d", i)
|
||||
}
|
||||
}
|
||||
d.check("done", p, 1, 1)
|
||||
}
|
||||
|
||||
func TestWaitPoolClose(t *testing.T) {
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 1,
|
||||
MaxActive: 1,
|
||||
Dial: d.dial,
|
||||
Wait: true,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c := p.Get()
|
||||
if _, err := c.Do("PING"); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
errs := startGoroutines(p, "PING")
|
||||
d.check("before close", p, 1, 1)
|
||||
p.Close()
|
||||
timeout := time.After(2 * time.Second)
|
||||
for i := 0; i < cap(errs); i++ {
|
||||
select {
|
||||
case err := <-errs:
|
||||
switch err {
|
||||
case nil:
|
||||
t.Fatal("blocked goroutine did not get error")
|
||||
case redis.ErrPoolExhausted:
|
||||
t.Fatal("blocked goroutine got pool exhausted error")
|
||||
}
|
||||
case <-timeout:
|
||||
t.Fatal("timeout waiting for blocked goroutine")
|
||||
}
|
||||
}
|
||||
c.Close()
|
||||
d.check("done", p, 1, 0)
|
||||
}
|
||||
|
||||
func TestWaitPoolCommandError(t *testing.T) {
|
||||
testErr := errors.New("test")
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 1,
|
||||
MaxActive: 1,
|
||||
Dial: d.dial,
|
||||
Wait: true,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c := p.Get()
|
||||
errs := startGoroutines(p, "ERR", testErr)
|
||||
d.check("before close", p, 1, 1)
|
||||
c.Close()
|
||||
timeout := time.After(2 * time.Second)
|
||||
for i := 0; i < cap(errs); i++ {
|
||||
select {
|
||||
case err := <-errs:
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
case <-timeout:
|
||||
t.Fatalf("timeout waiting for blocked goroutine %d", i)
|
||||
}
|
||||
}
|
||||
d.check("done", p, cap(errs), 0)
|
||||
}
|
||||
|
||||
func TestWaitPoolDialError(t *testing.T) {
|
||||
testErr := errors.New("test")
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: 1,
|
||||
MaxActive: 1,
|
||||
Dial: d.dial,
|
||||
Wait: true,
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
c := p.Get()
|
||||
errs := startGoroutines(p, "ERR", testErr)
|
||||
d.check("before close", p, 1, 1)
|
||||
|
||||
d.dialErr = errors.New("dial")
|
||||
c.Close()
|
||||
|
||||
nilCount := 0
|
||||
errCount := 0
|
||||
timeout := time.After(2 * time.Second)
|
||||
for i := 0; i < cap(errs); i++ {
|
||||
select {
|
||||
case err := <-errs:
|
||||
switch err {
|
||||
case nil:
|
||||
nilCount++
|
||||
case d.dialErr:
|
||||
errCount++
|
||||
default:
|
||||
t.Fatalf("expected dial error or nil, got %v", err)
|
||||
}
|
||||
case <-timeout:
|
||||
t.Fatalf("timeout waiting for blocked goroutine %d", i)
|
||||
}
|
||||
}
|
||||
if nilCount != 1 {
|
||||
t.Errorf("expected one nil error, got %d", nilCount)
|
||||
}
|
||||
if errCount != cap(errs)-1 {
|
||||
t.Errorf("expected %d dial erors, got %d", cap(errs)-1, errCount)
|
||||
}
|
||||
d.check("done", p, cap(errs), 0)
|
||||
}
|
||||
|
||||
// Borrowing requires us to iterate over the idle connections, unlock the pool,
|
||||
// and perform a blocking operation to check the connection still works. If
|
||||
// TestOnBorrow fails, we must reacquire the lock and continue iteration. This
|
||||
// test ensures that iteration will work correctly if multiple threads are
|
||||
// iterating simultaneously.
|
||||
func TestLocking_TestOnBorrowFails_PoolDoesntCrash(t *testing.T) {
|
||||
const count = 100
|
||||
|
||||
// First we'll Create a pool where the pilfering of idle connections fails.
|
||||
d := poolDialer{t: t}
|
||||
p := &redis.Pool{
|
||||
MaxIdle: count,
|
||||
MaxActive: count,
|
||||
Dial: d.dial,
|
||||
TestOnBorrow: func(c redis.Conn, t time.Time) error {
|
||||
return errors.New("No way back into the real world.")
|
||||
},
|
||||
}
|
||||
defer p.Close()
|
||||
|
||||
// Fill the pool with idle connections.
|
||||
conns := make([]redis.Conn, count)
|
||||
for i := range conns {
|
||||
conns[i] = p.Get()
|
||||
}
|
||||
for i := range conns {
|
||||
conns[i].Close()
|
||||
}
|
||||
|
||||
// Spawn a bunch of goroutines to thrash the pool.
|
||||
var wg sync.WaitGroup
|
||||
wg.Add(count)
|
||||
for i := 0; i < count; i++ {
|
||||
go func() {
|
||||
c := p.Get()
|
||||
if c.Err() != nil {
|
||||
t.Errorf("pool get failed: %v", c.Err())
|
||||
}
|
||||
c.Close()
|
||||
wg.Done()
|
||||
}()
|
||||
}
|
||||
wg.Wait()
|
||||
if d.dialed != count*2 {
|
||||
t.Errorf("Expected %d dials, got %d", count*2, d.dialed)
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkPoolGet(b *testing.B) {
|
||||
b.StopTimer()
|
||||
p := redis.Pool{Dial: redis.DialDefaultServer, MaxIdle: 2}
|
||||
c := p.Get()
|
||||
if err := c.Err(); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
c.Close()
|
||||
defer p.Close()
|
||||
b.StartTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
c = p.Get()
|
||||
c.Close()
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkPoolGetErr(b *testing.B) {
|
||||
b.StopTimer()
|
||||
p := redis.Pool{Dial: redis.DialDefaultServer, MaxIdle: 2}
|
||||
c := p.Get()
|
||||
if err := c.Err(); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
c.Close()
|
||||
defer p.Close()
|
||||
b.StartTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
c = p.Get()
|
||||
if err := c.Err(); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
c.Close()
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkPoolGetPing(b *testing.B) {
|
||||
b.StopTimer()
|
||||
p := redis.Pool{Dial: redis.DialDefaultServer, MaxIdle: 2}
|
||||
c := p.Get()
|
||||
if err := c.Err(); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
c.Close()
|
||||
defer p.Close()
|
||||
b.StartTimer()
|
||||
for i := 0; i < b.N; i++ {
|
||||
c = p.Get()
|
||||
if _, err := c.Do("PING"); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
c.Close()
|
||||
}
|
||||
}
|
144
vendor/github.com/garyburd/redigo/redis/pubsub.go
generated
vendored
144
vendor/github.com/garyburd/redigo/redis/pubsub.go
generated
vendored
@ -1,144 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis
|
||||
|
||||
import "errors"
|
||||
|
||||
// Subscription represents a subscribe or unsubscribe notification.
|
||||
type Subscription struct {
|
||||
|
||||
// Kind is "subscribe", "unsubscribe", "psubscribe" or "punsubscribe"
|
||||
Kind string
|
||||
|
||||
// The channel that was changed.
|
||||
Channel string
|
||||
|
||||
// The current number of subscriptions for connection.
|
||||
Count int
|
||||
}
|
||||
|
||||
// Message represents a message notification.
|
||||
type Message struct {
|
||||
|
||||
// The originating channel.
|
||||
Channel string
|
||||
|
||||
// The message data.
|
||||
Data []byte
|
||||
}
|
||||
|
||||
// PMessage represents a pmessage notification.
|
||||
type PMessage struct {
|
||||
|
||||
// The matched pattern.
|
||||
Pattern string
|
||||
|
||||
// The originating channel.
|
||||
Channel string
|
||||
|
||||
// The message data.
|
||||
Data []byte
|
||||
}
|
||||
|
||||
// Pong represents a pubsub pong notification.
|
||||
type Pong struct {
|
||||
Data string
|
||||
}
|
||||
|
||||
// PubSubConn wraps a Conn with convenience methods for subscribers.
|
||||
type PubSubConn struct {
|
||||
Conn Conn
|
||||
}
|
||||
|
||||
// Close closes the connection.
|
||||
func (c PubSubConn) Close() error {
|
||||
return c.Conn.Close()
|
||||
}
|
||||
|
||||
// Subscribe subscribes the connection to the specified channels.
|
||||
func (c PubSubConn) Subscribe(channel ...interface{}) error {
|
||||
c.Conn.Send("SUBSCRIBE", channel...)
|
||||
return c.Conn.Flush()
|
||||
}
|
||||
|
||||
// PSubscribe subscribes the connection to the given patterns.
|
||||
func (c PubSubConn) PSubscribe(channel ...interface{}) error {
|
||||
c.Conn.Send("PSUBSCRIBE", channel...)
|
||||
return c.Conn.Flush()
|
||||
}
|
||||
|
||||
// Unsubscribe unsubscribes the connection from the given channels, or from all
|
||||
// of them if none is given.
|
||||
func (c PubSubConn) Unsubscribe(channel ...interface{}) error {
|
||||
c.Conn.Send("UNSUBSCRIBE", channel...)
|
||||
return c.Conn.Flush()
|
||||
}
|
||||
|
||||
// PUnsubscribe unsubscribes the connection from the given patterns, or from all
|
||||
// of them if none is given.
|
||||
func (c PubSubConn) PUnsubscribe(channel ...interface{}) error {
|
||||
c.Conn.Send("PUNSUBSCRIBE", channel...)
|
||||
return c.Conn.Flush()
|
||||
}
|
||||
|
||||
// Ping sends a PING to the server with the specified data.
|
||||
func (c PubSubConn) Ping(data string) error {
|
||||
c.Conn.Send("PING", data)
|
||||
return c.Conn.Flush()
|
||||
}
|
||||
|
||||
// Receive returns a pushed message as a Subscription, Message, PMessage, Pong
|
||||
// or error. The return value is intended to be used directly in a type switch
|
||||
// as illustrated in the PubSubConn example.
|
||||
func (c PubSubConn) Receive() interface{} {
|
||||
reply, err := Values(c.Conn.Receive())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
var kind string
|
||||
reply, err = Scan(reply, &kind)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
switch kind {
|
||||
case "message":
|
||||
var m Message
|
||||
if _, err := Scan(reply, &m.Channel, &m.Data); err != nil {
|
||||
return err
|
||||
}
|
||||
return m
|
||||
case "pmessage":
|
||||
var pm PMessage
|
||||
if _, err := Scan(reply, &pm.Pattern, &pm.Channel, &pm.Data); err != nil {
|
||||
return err
|
||||
}
|
||||
return pm
|
||||
case "subscribe", "psubscribe", "unsubscribe", "punsubscribe":
|
||||
s := Subscription{Kind: kind}
|
||||
if _, err := Scan(reply, &s.Channel, &s.Count); err != nil {
|
||||
return err
|
||||
}
|
||||
return s
|
||||
case "pong":
|
||||
var p Pong
|
||||
if _, err := Scan(reply, &p.Data); err != nil {
|
||||
return err
|
||||
}
|
||||
return p
|
||||
}
|
||||
return errors.New("redigo: unknown pubsub notification")
|
||||
}
|
148
vendor/github.com/garyburd/redigo/redis/pubsub_test.go
generated
vendored
148
vendor/github.com/garyburd/redigo/redis/pubsub_test.go
generated
vendored
@ -1,148 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis_test
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"reflect"
|
||||
"sync"
|
||||
"testing"
|
||||
|
||||
"github.com/garyburd/redigo/redis"
|
||||
)
|
||||
|
||||
func publish(channel, value interface{}) {
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
defer c.Close()
|
||||
c.Do("PUBLISH", channel, value)
|
||||
}
|
||||
|
||||
// Applications can receive pushed messages from one goroutine and manage subscriptions from another goroutine.
|
||||
func ExamplePubSubConn() {
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
defer c.Close()
|
||||
var wg sync.WaitGroup
|
||||
wg.Add(2)
|
||||
|
||||
psc := redis.PubSubConn{Conn: c}
|
||||
|
||||
// This goroutine receives and prints pushed notifications from the server.
|
||||
// The goroutine exits when the connection is unsubscribed from all
|
||||
// channels or there is an error.
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
for {
|
||||
switch n := psc.Receive().(type) {
|
||||
case redis.Message:
|
||||
fmt.Printf("Message: %s %s\n", n.Channel, n.Data)
|
||||
case redis.PMessage:
|
||||
fmt.Printf("PMessage: %s %s %s\n", n.Pattern, n.Channel, n.Data)
|
||||
case redis.Subscription:
|
||||
fmt.Printf("Subscription: %s %s %d\n", n.Kind, n.Channel, n.Count)
|
||||
if n.Count == 0 {
|
||||
return
|
||||
}
|
||||
case error:
|
||||
fmt.Printf("error: %v\n", n)
|
||||
return
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
// This goroutine manages subscriptions for the connection.
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
|
||||
psc.Subscribe("example")
|
||||
psc.PSubscribe("p*")
|
||||
|
||||
// The following function calls publish a message using another
|
||||
// connection to the Redis server.
|
||||
publish("example", "hello")
|
||||
publish("example", "world")
|
||||
publish("pexample", "foo")
|
||||
publish("pexample", "bar")
|
||||
|
||||
// Unsubscribe from all connections. This will cause the receiving
|
||||
// goroutine to exit.
|
||||
psc.Unsubscribe()
|
||||
psc.PUnsubscribe()
|
||||
}()
|
||||
|
||||
wg.Wait()
|
||||
|
||||
// Output:
|
||||
// Subscription: subscribe example 1
|
||||
// Subscription: psubscribe p* 2
|
||||
// Message: example hello
|
||||
// Message: example world
|
||||
// PMessage: p* pexample foo
|
||||
// PMessage: p* pexample bar
|
||||
// Subscription: unsubscribe example 1
|
||||
// Subscription: punsubscribe p* 0
|
||||
}
|
||||
|
||||
func expectPushed(t *testing.T, c redis.PubSubConn, message string, expected interface{}) {
|
||||
actual := c.Receive()
|
||||
if !reflect.DeepEqual(actual, expected) {
|
||||
t.Errorf("%s = %v, want %v", message, actual, expected)
|
||||
}
|
||||
}
|
||||
|
||||
func TestPushed(t *testing.T) {
|
||||
pc, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer pc.Close()
|
||||
|
||||
sc, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer sc.Close()
|
||||
|
||||
c := redis.PubSubConn{Conn: sc}
|
||||
|
||||
c.Subscribe("c1")
|
||||
expectPushed(t, c, "Subscribe(c1)", redis.Subscription{Kind: "subscribe", Channel: "c1", Count: 1})
|
||||
c.Subscribe("c2")
|
||||
expectPushed(t, c, "Subscribe(c2)", redis.Subscription{Kind: "subscribe", Channel: "c2", Count: 2})
|
||||
c.PSubscribe("p1")
|
||||
expectPushed(t, c, "PSubscribe(p1)", redis.Subscription{Kind: "psubscribe", Channel: "p1", Count: 3})
|
||||
c.PSubscribe("p2")
|
||||
expectPushed(t, c, "PSubscribe(p2)", redis.Subscription{Kind: "psubscribe", Channel: "p2", Count: 4})
|
||||
c.PUnsubscribe()
|
||||
expectPushed(t, c, "Punsubscribe(p1)", redis.Subscription{Kind: "punsubscribe", Channel: "p1", Count: 3})
|
||||
expectPushed(t, c, "Punsubscribe()", redis.Subscription{Kind: "punsubscribe", Channel: "p2", Count: 2})
|
||||
|
||||
pc.Do("PUBLISH", "c1", "hello")
|
||||
expectPushed(t, c, "PUBLISH c1 hello", redis.Message{Channel: "c1", Data: []byte("hello")})
|
||||
|
||||
c.Ping("hello")
|
||||
expectPushed(t, c, `Ping("hello")`, redis.Pong{Data: "hello"})
|
||||
|
||||
c.Conn.Send("PING")
|
||||
c.Conn.Flush()
|
||||
expectPushed(t, c, `Send("PING")`, redis.Pong{})
|
||||
}
|
44
vendor/github.com/garyburd/redigo/redis/redis.go
generated
vendored
44
vendor/github.com/garyburd/redigo/redis/redis.go
generated
vendored
@ -1,44 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis
|
||||
|
||||
// Error represents an error returned in a command reply.
|
||||
type Error string
|
||||
|
||||
func (err Error) Error() string { return string(err) }
|
||||
|
||||
// Conn represents a connection to a Redis server.
|
||||
type Conn interface {
|
||||
// Close closes the connection.
|
||||
Close() error
|
||||
|
||||
// Err returns a non-nil value if the connection is broken. The returned
|
||||
// value is either the first non-nil value returned from the underlying
|
||||
// network connection or a protocol parsing error. Applications should
|
||||
// close broken connections.
|
||||
Err() error
|
||||
|
||||
// Do sends a command to the server and returns the received reply.
|
||||
Do(commandName string, args ...interface{}) (reply interface{}, err error)
|
||||
|
||||
// Send writes the command to the client's output buffer.
|
||||
Send(commandName string, args ...interface{}) error
|
||||
|
||||
// Flush flushes the output buffer to the Redis server.
|
||||
Flush() error
|
||||
|
||||
// Receive receives a single reply from the Redis server
|
||||
Receive() (reply interface{}, err error)
|
||||
}
|
393
vendor/github.com/garyburd/redigo/redis/reply.go
generated
vendored
393
vendor/github.com/garyburd/redigo/redis/reply.go
generated
vendored
@ -1,393 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
// ErrNil indicates that a reply value is nil.
|
||||
var ErrNil = errors.New("redigo: nil returned")
|
||||
|
||||
// Int is a helper that converts a command reply to an integer. If err is not
|
||||
// equal to nil, then Int returns 0, err. Otherwise, Int converts the
|
||||
// reply to an int as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// integer int(reply), nil
|
||||
// bulk string parsed reply, nil
|
||||
// nil 0, ErrNil
|
||||
// other 0, error
|
||||
func Int(reply interface{}, err error) (int, error) {
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case int64:
|
||||
x := int(reply)
|
||||
if int64(x) != reply {
|
||||
return 0, strconv.ErrRange
|
||||
}
|
||||
return x, nil
|
||||
case []byte:
|
||||
n, err := strconv.ParseInt(string(reply), 10, 0)
|
||||
return int(n), err
|
||||
case nil:
|
||||
return 0, ErrNil
|
||||
case Error:
|
||||
return 0, reply
|
||||
}
|
||||
return 0, fmt.Errorf("redigo: unexpected type for Int, got type %T", reply)
|
||||
}
|
||||
|
||||
// Int64 is a helper that converts a command reply to 64 bit integer. If err is
|
||||
// not equal to nil, then Int returns 0, err. Otherwise, Int64 converts the
|
||||
// reply to an int64 as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// integer reply, nil
|
||||
// bulk string parsed reply, nil
|
||||
// nil 0, ErrNil
|
||||
// other 0, error
|
||||
func Int64(reply interface{}, err error) (int64, error) {
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case int64:
|
||||
return reply, nil
|
||||
case []byte:
|
||||
n, err := strconv.ParseInt(string(reply), 10, 64)
|
||||
return n, err
|
||||
case nil:
|
||||
return 0, ErrNil
|
||||
case Error:
|
||||
return 0, reply
|
||||
}
|
||||
return 0, fmt.Errorf("redigo: unexpected type for Int64, got type %T", reply)
|
||||
}
|
||||
|
||||
var errNegativeInt = errors.New("redigo: unexpected value for Uint64")
|
||||
|
||||
// Uint64 is a helper that converts a command reply to 64 bit integer. If err is
|
||||
// not equal to nil, then Int returns 0, err. Otherwise, Int64 converts the
|
||||
// reply to an int64 as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// integer reply, nil
|
||||
// bulk string parsed reply, nil
|
||||
// nil 0, ErrNil
|
||||
// other 0, error
|
||||
func Uint64(reply interface{}, err error) (uint64, error) {
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case int64:
|
||||
if reply < 0 {
|
||||
return 0, errNegativeInt
|
||||
}
|
||||
return uint64(reply), nil
|
||||
case []byte:
|
||||
n, err := strconv.ParseUint(string(reply), 10, 64)
|
||||
return n, err
|
||||
case nil:
|
||||
return 0, ErrNil
|
||||
case Error:
|
||||
return 0, reply
|
||||
}
|
||||
return 0, fmt.Errorf("redigo: unexpected type for Uint64, got type %T", reply)
|
||||
}
|
||||
|
||||
// Float64 is a helper that converts a command reply to 64 bit float. If err is
|
||||
// not equal to nil, then Float64 returns 0, err. Otherwise, Float64 converts
|
||||
// the reply to an int as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// bulk string parsed reply, nil
|
||||
// nil 0, ErrNil
|
||||
// other 0, error
|
||||
func Float64(reply interface{}, err error) (float64, error) {
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case []byte:
|
||||
n, err := strconv.ParseFloat(string(reply), 64)
|
||||
return n, err
|
||||
case nil:
|
||||
return 0, ErrNil
|
||||
case Error:
|
||||
return 0, reply
|
||||
}
|
||||
return 0, fmt.Errorf("redigo: unexpected type for Float64, got type %T", reply)
|
||||
}
|
||||
|
||||
// String is a helper that converts a command reply to a string. If err is not
|
||||
// equal to nil, then String returns "", err. Otherwise String converts the
|
||||
// reply to a string as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// bulk string string(reply), nil
|
||||
// simple string reply, nil
|
||||
// nil "", ErrNil
|
||||
// other "", error
|
||||
func String(reply interface{}, err error) (string, error) {
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case []byte:
|
||||
return string(reply), nil
|
||||
case string:
|
||||
return reply, nil
|
||||
case nil:
|
||||
return "", ErrNil
|
||||
case Error:
|
||||
return "", reply
|
||||
}
|
||||
return "", fmt.Errorf("redigo: unexpected type for String, got type %T", reply)
|
||||
}
|
||||
|
||||
// Bytes is a helper that converts a command reply to a slice of bytes. If err
|
||||
// is not equal to nil, then Bytes returns nil, err. Otherwise Bytes converts
|
||||
// the reply to a slice of bytes as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// bulk string reply, nil
|
||||
// simple string []byte(reply), nil
|
||||
// nil nil, ErrNil
|
||||
// other nil, error
|
||||
func Bytes(reply interface{}, err error) ([]byte, error) {
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case []byte:
|
||||
return reply, nil
|
||||
case string:
|
||||
return []byte(reply), nil
|
||||
case nil:
|
||||
return nil, ErrNil
|
||||
case Error:
|
||||
return nil, reply
|
||||
}
|
||||
return nil, fmt.Errorf("redigo: unexpected type for Bytes, got type %T", reply)
|
||||
}
|
||||
|
||||
// Bool is a helper that converts a command reply to a boolean. If err is not
|
||||
// equal to nil, then Bool returns false, err. Otherwise Bool converts the
|
||||
// reply to boolean as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// integer value != 0, nil
|
||||
// bulk string strconv.ParseBool(reply)
|
||||
// nil false, ErrNil
|
||||
// other false, error
|
||||
func Bool(reply interface{}, err error) (bool, error) {
|
||||
if err != nil {
|
||||
return false, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case int64:
|
||||
return reply != 0, nil
|
||||
case []byte:
|
||||
return strconv.ParseBool(string(reply))
|
||||
case nil:
|
||||
return false, ErrNil
|
||||
case Error:
|
||||
return false, reply
|
||||
}
|
||||
return false, fmt.Errorf("redigo: unexpected type for Bool, got type %T", reply)
|
||||
}
|
||||
|
||||
// MultiBulk is a helper that converts an array command reply to a []interface{}.
|
||||
//
|
||||
// Deprecated: Use Values instead.
|
||||
func MultiBulk(reply interface{}, err error) ([]interface{}, error) { return Values(reply, err) }
|
||||
|
||||
// Values is a helper that converts an array command reply to a []interface{}.
|
||||
// If err is not equal to nil, then Values returns nil, err. Otherwise, Values
|
||||
// converts the reply as follows:
|
||||
//
|
||||
// Reply type Result
|
||||
// array reply, nil
|
||||
// nil nil, ErrNil
|
||||
// other nil, error
|
||||
func Values(reply interface{}, err error) ([]interface{}, error) {
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case []interface{}:
|
||||
return reply, nil
|
||||
case nil:
|
||||
return nil, ErrNil
|
||||
case Error:
|
||||
return nil, reply
|
||||
}
|
||||
return nil, fmt.Errorf("redigo: unexpected type for Values, got type %T", reply)
|
||||
}
|
||||
|
||||
// Strings is a helper that converts an array command reply to a []string. If
|
||||
// err is not equal to nil, then Strings returns nil, err. Nil array items are
|
||||
// converted to "" in the output slice. Strings returns an error if an array
|
||||
// item is not a bulk string or nil.
|
||||
func Strings(reply interface{}, err error) ([]string, error) {
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case []interface{}:
|
||||
result := make([]string, len(reply))
|
||||
for i := range reply {
|
||||
if reply[i] == nil {
|
||||
continue
|
||||
}
|
||||
p, ok := reply[i].([]byte)
|
||||
if !ok {
|
||||
return nil, fmt.Errorf("redigo: unexpected element type for Strings, got type %T", reply[i])
|
||||
}
|
||||
result[i] = string(p)
|
||||
}
|
||||
return result, nil
|
||||
case nil:
|
||||
return nil, ErrNil
|
||||
case Error:
|
||||
return nil, reply
|
||||
}
|
||||
return nil, fmt.Errorf("redigo: unexpected type for Strings, got type %T", reply)
|
||||
}
|
||||
|
||||
// ByteSlices is a helper that converts an array command reply to a [][]byte.
|
||||
// If err is not equal to nil, then ByteSlices returns nil, err. Nil array
|
||||
// items are stay nil. ByteSlices returns an error if an array item is not a
|
||||
// bulk string or nil.
|
||||
func ByteSlices(reply interface{}, err error) ([][]byte, error) {
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
switch reply := reply.(type) {
|
||||
case []interface{}:
|
||||
result := make([][]byte, len(reply))
|
||||
for i := range reply {
|
||||
if reply[i] == nil {
|
||||
continue
|
||||
}
|
||||
p, ok := reply[i].([]byte)
|
||||
if !ok {
|
||||
return nil, fmt.Errorf("redigo: unexpected element type for ByteSlices, got type %T", reply[i])
|
||||
}
|
||||
result[i] = p
|
||||
}
|
||||
return result, nil
|
||||
case nil:
|
||||
return nil, ErrNil
|
||||
case Error:
|
||||
return nil, reply
|
||||
}
|
||||
return nil, fmt.Errorf("redigo: unexpected type for ByteSlices, got type %T", reply)
|
||||
}
|
||||
|
||||
// Ints is a helper that converts an array command reply to a []int. If
|
||||
// err is not equal to nil, then Ints returns nil, err.
|
||||
func Ints(reply interface{}, err error) ([]int, error) {
|
||||
var ints []int
|
||||
values, err := Values(reply, err)
|
||||
if err != nil {
|
||||
return ints, err
|
||||
}
|
||||
if err := ScanSlice(values, &ints); err != nil {
|
||||
return ints, err
|
||||
}
|
||||
return ints, nil
|
||||
}
|
||||
|
||||
// StringMap is a helper that converts an array of strings (alternating key, value)
|
||||
// into a map[string]string. The HGETALL and CONFIG GET commands return replies in this format.
|
||||
// Requires an even number of values in result.
|
||||
func StringMap(result interface{}, err error) (map[string]string, error) {
|
||||
values, err := Values(result, err)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(values)%2 != 0 {
|
||||
return nil, errors.New("redigo: StringMap expects even number of values result")
|
||||
}
|
||||
m := make(map[string]string, len(values)/2)
|
||||
for i := 0; i < len(values); i += 2 {
|
||||
key, okKey := values[i].([]byte)
|
||||
value, okValue := values[i+1].([]byte)
|
||||
if !okKey || !okValue {
|
||||
return nil, errors.New("redigo: ScanMap key not a bulk string value")
|
||||
}
|
||||
m[string(key)] = string(value)
|
||||
}
|
||||
return m, nil
|
||||
}
|
||||
|
||||
// IntMap is a helper that converts an array of strings (alternating key, value)
|
||||
// into a map[string]int. The HGETALL commands return replies in this format.
|
||||
// Requires an even number of values in result.
|
||||
func IntMap(result interface{}, err error) (map[string]int, error) {
|
||||
values, err := Values(result, err)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(values)%2 != 0 {
|
||||
return nil, errors.New("redigo: IntMap expects even number of values result")
|
||||
}
|
||||
m := make(map[string]int, len(values)/2)
|
||||
for i := 0; i < len(values); i += 2 {
|
||||
key, ok := values[i].([]byte)
|
||||
if !ok {
|
||||
return nil, errors.New("redigo: ScanMap key not a bulk string value")
|
||||
}
|
||||
value, err := Int(values[i+1], nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
m[string(key)] = value
|
||||
}
|
||||
return m, nil
|
||||
}
|
||||
|
||||
// Int64Map is a helper that converts an array of strings (alternating key, value)
|
||||
// into a map[string]int64. The HGETALL commands return replies in this format.
|
||||
// Requires an even number of values in result.
|
||||
func Int64Map(result interface{}, err error) (map[string]int64, error) {
|
||||
values, err := Values(result, err)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(values)%2 != 0 {
|
||||
return nil, errors.New("redigo: Int64Map expects even number of values result")
|
||||
}
|
||||
m := make(map[string]int64, len(values)/2)
|
||||
for i := 0; i < len(values); i += 2 {
|
||||
key, ok := values[i].([]byte)
|
||||
if !ok {
|
||||
return nil, errors.New("redigo: ScanMap key not a bulk string value")
|
||||
}
|
||||
value, err := Int64(values[i+1], nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
m[string(key)] = value
|
||||
}
|
||||
return m, nil
|
||||
}
|
179
vendor/github.com/garyburd/redigo/redis/reply_test.go
generated
vendored
179
vendor/github.com/garyburd/redigo/redis/reply_test.go
generated
vendored
@ -1,179 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis_test
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"reflect"
|
||||
"testing"
|
||||
|
||||
"github.com/garyburd/redigo/redis"
|
||||
)
|
||||
|
||||
type valueError struct {
|
||||
v interface{}
|
||||
err error
|
||||
}
|
||||
|
||||
func ve(v interface{}, err error) valueError {
|
||||
return valueError{v, err}
|
||||
}
|
||||
|
||||
var replyTests = []struct {
|
||||
name interface{}
|
||||
actual valueError
|
||||
expected valueError
|
||||
}{
|
||||
{
|
||||
"ints([v1, v2])",
|
||||
ve(redis.Ints([]interface{}{[]byte("4"), []byte("5")}, nil)),
|
||||
ve([]int{4, 5}, nil),
|
||||
},
|
||||
{
|
||||
"ints(nil)",
|
||||
ve(redis.Ints(nil, nil)),
|
||||
ve([]int(nil), redis.ErrNil),
|
||||
},
|
||||
{
|
||||
"strings([v1, v2])",
|
||||
ve(redis.Strings([]interface{}{[]byte("v1"), []byte("v2")}, nil)),
|
||||
ve([]string{"v1", "v2"}, nil),
|
||||
},
|
||||
{
|
||||
"strings(nil)",
|
||||
ve(redis.Strings(nil, nil)),
|
||||
ve([]string(nil), redis.ErrNil),
|
||||
},
|
||||
{
|
||||
"byteslices([v1, v2])",
|
||||
ve(redis.ByteSlices([]interface{}{[]byte("v1"), []byte("v2")}, nil)),
|
||||
ve([][]byte{[]byte("v1"), []byte("v2")}, nil),
|
||||
},
|
||||
{
|
||||
"byteslices(nil)",
|
||||
ve(redis.ByteSlices(nil, nil)),
|
||||
ve([][]byte(nil), redis.ErrNil),
|
||||
},
|
||||
{
|
||||
"values([v1, v2])",
|
||||
ve(redis.Values([]interface{}{[]byte("v1"), []byte("v2")}, nil)),
|
||||
ve([]interface{}{[]byte("v1"), []byte("v2")}, nil),
|
||||
},
|
||||
{
|
||||
"values(nil)",
|
||||
ve(redis.Values(nil, nil)),
|
||||
ve([]interface{}(nil), redis.ErrNil),
|
||||
},
|
||||
{
|
||||
"float64(1.0)",
|
||||
ve(redis.Float64([]byte("1.0"), nil)),
|
||||
ve(float64(1.0), nil),
|
||||
},
|
||||
{
|
||||
"float64(nil)",
|
||||
ve(redis.Float64(nil, nil)),
|
||||
ve(float64(0.0), redis.ErrNil),
|
||||
},
|
||||
{
|
||||
"uint64(1)",
|
||||
ve(redis.Uint64(int64(1), nil)),
|
||||
ve(uint64(1), nil),
|
||||
},
|
||||
{
|
||||
"uint64(-1)",
|
||||
ve(redis.Uint64(int64(-1), nil)),
|
||||
ve(uint64(0), redis.ErrNegativeInt),
|
||||
},
|
||||
}
|
||||
|
||||
func TestReply(t *testing.T) {
|
||||
for _, rt := range replyTests {
|
||||
if rt.actual.err != rt.expected.err {
|
||||
t.Errorf("%s returned err %v, want %v", rt.name, rt.actual.err, rt.expected.err)
|
||||
continue
|
||||
}
|
||||
if !reflect.DeepEqual(rt.actual.v, rt.expected.v) {
|
||||
t.Errorf("%s=%+v, want %+v", rt.name, rt.actual.v, rt.expected.v)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// dial wraps DialDefaultServer() with a more suitable function name for examples.
|
||||
func dial() (redis.Conn, error) {
|
||||
return redis.DialDefaultServer()
|
||||
}
|
||||
|
||||
func ExampleBool() {
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
c.Do("SET", "foo", 1)
|
||||
exists, _ := redis.Bool(c.Do("EXISTS", "foo"))
|
||||
fmt.Printf("%#v\n", exists)
|
||||
// Output:
|
||||
// true
|
||||
}
|
||||
|
||||
func ExampleInt() {
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
c.Do("SET", "k1", 1)
|
||||
n, _ := redis.Int(c.Do("GET", "k1"))
|
||||
fmt.Printf("%#v\n", n)
|
||||
n, _ = redis.Int(c.Do("INCR", "k1"))
|
||||
fmt.Printf("%#v\n", n)
|
||||
// Output:
|
||||
// 1
|
||||
// 2
|
||||
}
|
||||
|
||||
func ExampleInts() {
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
c.Do("SADD", "set_with_integers", 4, 5, 6)
|
||||
ints, _ := redis.Ints(c.Do("SMEMBERS", "set_with_integers"))
|
||||
fmt.Printf("%#v\n", ints)
|
||||
// Output:
|
||||
// []int{4, 5, 6}
|
||||
}
|
||||
|
||||
func ExampleString() {
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
c.Do("SET", "hello", "world")
|
||||
s, err := redis.String(c.Do("GET", "hello"))
|
||||
fmt.Printf("%#v\n", s)
|
||||
// Output:
|
||||
// "world"
|
||||
}
|
555
vendor/github.com/garyburd/redigo/redis/scan.go
generated
vendored
555
vendor/github.com/garyburd/redigo/redis/scan.go
generated
vendored
@ -1,555 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
)
|
||||
|
||||
func ensureLen(d reflect.Value, n int) {
|
||||
if n > d.Cap() {
|
||||
d.Set(reflect.MakeSlice(d.Type(), n, n))
|
||||
} else {
|
||||
d.SetLen(n)
|
||||
}
|
||||
}
|
||||
|
||||
func cannotConvert(d reflect.Value, s interface{}) error {
|
||||
var sname string
|
||||
switch s.(type) {
|
||||
case string:
|
||||
sname = "Redis simple string"
|
||||
case Error:
|
||||
sname = "Redis error"
|
||||
case int64:
|
||||
sname = "Redis integer"
|
||||
case []byte:
|
||||
sname = "Redis bulk string"
|
||||
case []interface{}:
|
||||
sname = "Redis array"
|
||||
default:
|
||||
sname = reflect.TypeOf(s).String()
|
||||
}
|
||||
return fmt.Errorf("cannot convert from %s to %s", sname, d.Type())
|
||||
}
|
||||
|
||||
func convertAssignBulkString(d reflect.Value, s []byte) (err error) {
|
||||
switch d.Type().Kind() {
|
||||
case reflect.Float32, reflect.Float64:
|
||||
var x float64
|
||||
x, err = strconv.ParseFloat(string(s), d.Type().Bits())
|
||||
d.SetFloat(x)
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
||||
var x int64
|
||||
x, err = strconv.ParseInt(string(s), 10, d.Type().Bits())
|
||||
d.SetInt(x)
|
||||
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
||||
var x uint64
|
||||
x, err = strconv.ParseUint(string(s), 10, d.Type().Bits())
|
||||
d.SetUint(x)
|
||||
case reflect.Bool:
|
||||
var x bool
|
||||
x, err = strconv.ParseBool(string(s))
|
||||
d.SetBool(x)
|
||||
case reflect.String:
|
||||
d.SetString(string(s))
|
||||
case reflect.Slice:
|
||||
if d.Type().Elem().Kind() != reflect.Uint8 {
|
||||
err = cannotConvert(d, s)
|
||||
} else {
|
||||
d.SetBytes(s)
|
||||
}
|
||||
default:
|
||||
err = cannotConvert(d, s)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func convertAssignInt(d reflect.Value, s int64) (err error) {
|
||||
switch d.Type().Kind() {
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
||||
d.SetInt(s)
|
||||
if d.Int() != s {
|
||||
err = strconv.ErrRange
|
||||
d.SetInt(0)
|
||||
}
|
||||
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
||||
if s < 0 {
|
||||
err = strconv.ErrRange
|
||||
} else {
|
||||
x := uint64(s)
|
||||
d.SetUint(x)
|
||||
if d.Uint() != x {
|
||||
err = strconv.ErrRange
|
||||
d.SetUint(0)
|
||||
}
|
||||
}
|
||||
case reflect.Bool:
|
||||
d.SetBool(s != 0)
|
||||
default:
|
||||
err = cannotConvert(d, s)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func convertAssignValue(d reflect.Value, s interface{}) (err error) {
|
||||
switch s := s.(type) {
|
||||
case []byte:
|
||||
err = convertAssignBulkString(d, s)
|
||||
case int64:
|
||||
err = convertAssignInt(d, s)
|
||||
default:
|
||||
err = cannotConvert(d, s)
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
func convertAssignArray(d reflect.Value, s []interface{}) error {
|
||||
if d.Type().Kind() != reflect.Slice {
|
||||
return cannotConvert(d, s)
|
||||
}
|
||||
ensureLen(d, len(s))
|
||||
for i := 0; i < len(s); i++ {
|
||||
if err := convertAssignValue(d.Index(i), s[i]); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func convertAssign(d interface{}, s interface{}) (err error) {
|
||||
// Handle the most common destination types using type switches and
|
||||
// fall back to reflection for all other types.
|
||||
switch s := s.(type) {
|
||||
case nil:
|
||||
// ingore
|
||||
case []byte:
|
||||
switch d := d.(type) {
|
||||
case *string:
|
||||
*d = string(s)
|
||||
case *int:
|
||||
*d, err = strconv.Atoi(string(s))
|
||||
case *bool:
|
||||
*d, err = strconv.ParseBool(string(s))
|
||||
case *[]byte:
|
||||
*d = s
|
||||
case *interface{}:
|
||||
*d = s
|
||||
case nil:
|
||||
// skip value
|
||||
default:
|
||||
if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
|
||||
err = cannotConvert(d, s)
|
||||
} else {
|
||||
err = convertAssignBulkString(d.Elem(), s)
|
||||
}
|
||||
}
|
||||
case int64:
|
||||
switch d := d.(type) {
|
||||
case *int:
|
||||
x := int(s)
|
||||
if int64(x) != s {
|
||||
err = strconv.ErrRange
|
||||
x = 0
|
||||
}
|
||||
*d = x
|
||||
case *bool:
|
||||
*d = s != 0
|
||||
case *interface{}:
|
||||
*d = s
|
||||
case nil:
|
||||
// skip value
|
||||
default:
|
||||
if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
|
||||
err = cannotConvert(d, s)
|
||||
} else {
|
||||
err = convertAssignInt(d.Elem(), s)
|
||||
}
|
||||
}
|
||||
case string:
|
||||
switch d := d.(type) {
|
||||
case *string:
|
||||
*d = string(s)
|
||||
default:
|
||||
err = cannotConvert(reflect.ValueOf(d), s)
|
||||
}
|
||||
case []interface{}:
|
||||
switch d := d.(type) {
|
||||
case *[]interface{}:
|
||||
*d = s
|
||||
case *interface{}:
|
||||
*d = s
|
||||
case nil:
|
||||
// skip value
|
||||
default:
|
||||
if d := reflect.ValueOf(d); d.Type().Kind() != reflect.Ptr {
|
||||
err = cannotConvert(d, s)
|
||||
} else {
|
||||
err = convertAssignArray(d.Elem(), s)
|
||||
}
|
||||
}
|
||||
case Error:
|
||||
err = s
|
||||
default:
|
||||
err = cannotConvert(reflect.ValueOf(d), s)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// Scan copies from src to the values pointed at by dest.
|
||||
//
|
||||
// The values pointed at by dest must be an integer, float, boolean, string,
|
||||
// []byte, interface{} or slices of these types. Scan uses the standard strconv
|
||||
// package to convert bulk strings to numeric and boolean types.
|
||||
//
|
||||
// If a dest value is nil, then the corresponding src value is skipped.
|
||||
//
|
||||
// If a src element is nil, then the corresponding dest value is not modified.
|
||||
//
|
||||
// To enable easy use of Scan in a loop, Scan returns the slice of src
|
||||
// following the copied values.
|
||||
func Scan(src []interface{}, dest ...interface{}) ([]interface{}, error) {
|
||||
if len(src) < len(dest) {
|
||||
return nil, errors.New("redigo.Scan: array short")
|
||||
}
|
||||
var err error
|
||||
for i, d := range dest {
|
||||
err = convertAssign(d, src[i])
|
||||
if err != nil {
|
||||
err = fmt.Errorf("redigo.Scan: cannot assign to dest %d: %v", i, err)
|
||||
break
|
||||
}
|
||||
}
|
||||
return src[len(dest):], err
|
||||
}
|
||||
|
||||
type fieldSpec struct {
|
||||
name string
|
||||
index []int
|
||||
omitEmpty bool
|
||||
}
|
||||
|
||||
type structSpec struct {
|
||||
m map[string]*fieldSpec
|
||||
l []*fieldSpec
|
||||
}
|
||||
|
||||
func (ss *structSpec) fieldSpec(name []byte) *fieldSpec {
|
||||
return ss.m[string(name)]
|
||||
}
|
||||
|
||||
func compileStructSpec(t reflect.Type, depth map[string]int, index []int, ss *structSpec) {
|
||||
for i := 0; i < t.NumField(); i++ {
|
||||
f := t.Field(i)
|
||||
switch {
|
||||
case f.PkgPath != "" && !f.Anonymous:
|
||||
// Ignore unexported fields.
|
||||
case f.Anonymous:
|
||||
// TODO: Handle pointers. Requires change to decoder and
|
||||
// protection against infinite recursion.
|
||||
if f.Type.Kind() == reflect.Struct {
|
||||
compileStructSpec(f.Type, depth, append(index, i), ss)
|
||||
}
|
||||
default:
|
||||
fs := &fieldSpec{name: f.Name}
|
||||
tag := f.Tag.Get("redis")
|
||||
p := strings.Split(tag, ",")
|
||||
if len(p) > 0 {
|
||||
if p[0] == "-" {
|
||||
continue
|
||||
}
|
||||
if len(p[0]) > 0 {
|
||||
fs.name = p[0]
|
||||
}
|
||||
for _, s := range p[1:] {
|
||||
switch s {
|
||||
case "omitempty":
|
||||
fs.omitEmpty = true
|
||||
default:
|
||||
panic(fmt.Errorf("redigo: unknown field tag %s for type %s", s, t.Name()))
|
||||
}
|
||||
}
|
||||
}
|
||||
d, found := depth[fs.name]
|
||||
if !found {
|
||||
d = 1 << 30
|
||||
}
|
||||
switch {
|
||||
case len(index) == d:
|
||||
// At same depth, remove from result.
|
||||
delete(ss.m, fs.name)
|
||||
j := 0
|
||||
for i := 0; i < len(ss.l); i++ {
|
||||
if fs.name != ss.l[i].name {
|
||||
ss.l[j] = ss.l[i]
|
||||
j += 1
|
||||
}
|
||||
}
|
||||
ss.l = ss.l[:j]
|
||||
case len(index) < d:
|
||||
fs.index = make([]int, len(index)+1)
|
||||
copy(fs.index, index)
|
||||
fs.index[len(index)] = i
|
||||
depth[fs.name] = len(index)
|
||||
ss.m[fs.name] = fs
|
||||
ss.l = append(ss.l, fs)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
structSpecMutex sync.RWMutex
|
||||
structSpecCache = make(map[reflect.Type]*structSpec)
|
||||
defaultFieldSpec = &fieldSpec{}
|
||||
)
|
||||
|
||||
func structSpecForType(t reflect.Type) *structSpec {
|
||||
|
||||
structSpecMutex.RLock()
|
||||
ss, found := structSpecCache[t]
|
||||
structSpecMutex.RUnlock()
|
||||
if found {
|
||||
return ss
|
||||
}
|
||||
|
||||
structSpecMutex.Lock()
|
||||
defer structSpecMutex.Unlock()
|
||||
ss, found = structSpecCache[t]
|
||||
if found {
|
||||
return ss
|
||||
}
|
||||
|
||||
ss = &structSpec{m: make(map[string]*fieldSpec)}
|
||||
compileStructSpec(t, make(map[string]int), nil, ss)
|
||||
structSpecCache[t] = ss
|
||||
return ss
|
||||
}
|
||||
|
||||
var errScanStructValue = errors.New("redigo.ScanStruct: value must be non-nil pointer to a struct")
|
||||
|
||||
// ScanStruct scans alternating names and values from src to a struct. The
|
||||
// HGETALL and CONFIG GET commands return replies in this format.
|
||||
//
|
||||
// ScanStruct uses exported field names to match values in the response. Use
|
||||
// 'redis' field tag to override the name:
|
||||
//
|
||||
// Field int `redis:"myName"`
|
||||
//
|
||||
// Fields with the tag redis:"-" are ignored.
|
||||
//
|
||||
// Integer, float, boolean, string and []byte fields are supported. Scan uses the
|
||||
// standard strconv package to convert bulk string values to numeric and
|
||||
// boolean types.
|
||||
//
|
||||
// If a src element is nil, then the corresponding field is not modified.
|
||||
func ScanStruct(src []interface{}, dest interface{}) error {
|
||||
d := reflect.ValueOf(dest)
|
||||
if d.Kind() != reflect.Ptr || d.IsNil() {
|
||||
return errScanStructValue
|
||||
}
|
||||
d = d.Elem()
|
||||
if d.Kind() != reflect.Struct {
|
||||
return errScanStructValue
|
||||
}
|
||||
ss := structSpecForType(d.Type())
|
||||
|
||||
if len(src)%2 != 0 {
|
||||
return errors.New("redigo.ScanStruct: number of values not a multiple of 2")
|
||||
}
|
||||
|
||||
for i := 0; i < len(src); i += 2 {
|
||||
s := src[i+1]
|
||||
if s == nil {
|
||||
continue
|
||||
}
|
||||
name, ok := src[i].([]byte)
|
||||
if !ok {
|
||||
return fmt.Errorf("redigo.ScanStruct: key %d not a bulk string value", i)
|
||||
}
|
||||
fs := ss.fieldSpec(name)
|
||||
if fs == nil {
|
||||
continue
|
||||
}
|
||||
if err := convertAssignValue(d.FieldByIndex(fs.index), s); err != nil {
|
||||
return fmt.Errorf("redigo.ScanStruct: cannot assign field %s: %v", fs.name, err)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
var (
|
||||
errScanSliceValue = errors.New("redigo.ScanSlice: dest must be non-nil pointer to a struct")
|
||||
)
|
||||
|
||||
// ScanSlice scans src to the slice pointed to by dest. The elements the dest
|
||||
// slice must be integer, float, boolean, string, struct or pointer to struct
|
||||
// values.
|
||||
//
|
||||
// Struct fields must be integer, float, boolean or string values. All struct
|
||||
// fields are used unless a subset is specified using fieldNames.
|
||||
func ScanSlice(src []interface{}, dest interface{}, fieldNames ...string) error {
|
||||
d := reflect.ValueOf(dest)
|
||||
if d.Kind() != reflect.Ptr || d.IsNil() {
|
||||
return errScanSliceValue
|
||||
}
|
||||
d = d.Elem()
|
||||
if d.Kind() != reflect.Slice {
|
||||
return errScanSliceValue
|
||||
}
|
||||
|
||||
isPtr := false
|
||||
t := d.Type().Elem()
|
||||
if t.Kind() == reflect.Ptr && t.Elem().Kind() == reflect.Struct {
|
||||
isPtr = true
|
||||
t = t.Elem()
|
||||
}
|
||||
|
||||
if t.Kind() != reflect.Struct {
|
||||
ensureLen(d, len(src))
|
||||
for i, s := range src {
|
||||
if s == nil {
|
||||
continue
|
||||
}
|
||||
if err := convertAssignValue(d.Index(i), s); err != nil {
|
||||
return fmt.Errorf("redigo.ScanSlice: cannot assign element %d: %v", i, err)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
ss := structSpecForType(t)
|
||||
fss := ss.l
|
||||
if len(fieldNames) > 0 {
|
||||
fss = make([]*fieldSpec, len(fieldNames))
|
||||
for i, name := range fieldNames {
|
||||
fss[i] = ss.m[name]
|
||||
if fss[i] == nil {
|
||||
return fmt.Errorf("redigo.ScanSlice: ScanSlice bad field name %s", name)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if len(fss) == 0 {
|
||||
return errors.New("redigo.ScanSlice: no struct fields")
|
||||
}
|
||||
|
||||
n := len(src) / len(fss)
|
||||
if n*len(fss) != len(src) {
|
||||
return errors.New("redigo.ScanSlice: length not a multiple of struct field count")
|
||||
}
|
||||
|
||||
ensureLen(d, n)
|
||||
for i := 0; i < n; i++ {
|
||||
d := d.Index(i)
|
||||
if isPtr {
|
||||
if d.IsNil() {
|
||||
d.Set(reflect.New(t))
|
||||
}
|
||||
d = d.Elem()
|
||||
}
|
||||
for j, fs := range fss {
|
||||
s := src[i*len(fss)+j]
|
||||
if s == nil {
|
||||
continue
|
||||
}
|
||||
if err := convertAssignValue(d.FieldByIndex(fs.index), s); err != nil {
|
||||
return fmt.Errorf("redigo.ScanSlice: cannot assign element %d to field %s: %v", i*len(fss)+j, fs.name, err)
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Args is a helper for constructing command arguments from structured values.
|
||||
type Args []interface{}
|
||||
|
||||
// Add returns the result of appending value to args.
|
||||
func (args Args) Add(value ...interface{}) Args {
|
||||
return append(args, value...)
|
||||
}
|
||||
|
||||
// AddFlat returns the result of appending the flattened value of v to args.
|
||||
//
|
||||
// Maps are flattened by appending the alternating keys and map values to args.
|
||||
//
|
||||
// Slices are flattened by appending the slice elements to args.
|
||||
//
|
||||
// Structs are flattened by appending the alternating names and values of
|
||||
// exported fields to args. If v is a nil struct pointer, then nothing is
|
||||
// appended. The 'redis' field tag overrides struct field names. See ScanStruct
|
||||
// for more information on the use of the 'redis' field tag.
|
||||
//
|
||||
// Other types are appended to args as is.
|
||||
func (args Args) AddFlat(v interface{}) Args {
|
||||
rv := reflect.ValueOf(v)
|
||||
switch rv.Kind() {
|
||||
case reflect.Struct:
|
||||
args = flattenStruct(args, rv)
|
||||
case reflect.Slice:
|
||||
for i := 0; i < rv.Len(); i++ {
|
||||
args = append(args, rv.Index(i).Interface())
|
||||
}
|
||||
case reflect.Map:
|
||||
for _, k := range rv.MapKeys() {
|
||||
args = append(args, k.Interface(), rv.MapIndex(k).Interface())
|
||||
}
|
||||
case reflect.Ptr:
|
||||
if rv.Type().Elem().Kind() == reflect.Struct {
|
||||
if !rv.IsNil() {
|
||||
args = flattenStruct(args, rv.Elem())
|
||||
}
|
||||
} else {
|
||||
args = append(args, v)
|
||||
}
|
||||
default:
|
||||
args = append(args, v)
|
||||
}
|
||||
return args
|
||||
}
|
||||
|
||||
func flattenStruct(args Args, v reflect.Value) Args {
|
||||
ss := structSpecForType(v.Type())
|
||||
for _, fs := range ss.l {
|
||||
fv := v.FieldByIndex(fs.index)
|
||||
if fs.omitEmpty {
|
||||
var empty = false
|
||||
switch fv.Kind() {
|
||||
case reflect.Array, reflect.Map, reflect.Slice, reflect.String:
|
||||
empty = fv.Len() == 0
|
||||
case reflect.Bool:
|
||||
empty = !fv.Bool()
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
||||
empty = fv.Int() == 0
|
||||
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
|
||||
empty = fv.Uint() == 0
|
||||
case reflect.Float32, reflect.Float64:
|
||||
empty = fv.Float() == 0
|
||||
case reflect.Interface, reflect.Ptr:
|
||||
empty = fv.IsNil()
|
||||
}
|
||||
if empty {
|
||||
continue
|
||||
}
|
||||
}
|
||||
args = append(args, fs.name, fv.Interface())
|
||||
}
|
||||
return args
|
||||
}
|
440
vendor/github.com/garyburd/redigo/redis/scan_test.go
generated
vendored
440
vendor/github.com/garyburd/redigo/redis/scan_test.go
generated
vendored
@ -1,440 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis_test
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"math"
|
||||
"reflect"
|
||||
"testing"
|
||||
|
||||
"github.com/garyburd/redigo/redis"
|
||||
)
|
||||
|
||||
var scanConversionTests = []struct {
|
||||
src interface{}
|
||||
dest interface{}
|
||||
}{
|
||||
{[]byte("-inf"), math.Inf(-1)},
|
||||
{[]byte("+inf"), math.Inf(1)},
|
||||
{[]byte("0"), float64(0)},
|
||||
{[]byte("3.14159"), float64(3.14159)},
|
||||
{[]byte("3.14"), float32(3.14)},
|
||||
{[]byte("-100"), int(-100)},
|
||||
{[]byte("101"), int(101)},
|
||||
{int64(102), int(102)},
|
||||
{[]byte("103"), uint(103)},
|
||||
{int64(104), uint(104)},
|
||||
{[]byte("105"), int8(105)},
|
||||
{int64(106), int8(106)},
|
||||
{[]byte("107"), uint8(107)},
|
||||
{int64(108), uint8(108)},
|
||||
{[]byte("0"), false},
|
||||
{int64(0), false},
|
||||
{[]byte("f"), false},
|
||||
{[]byte("1"), true},
|
||||
{int64(1), true},
|
||||
{[]byte("t"), true},
|
||||
{"hello", "hello"},
|
||||
{[]byte("hello"), "hello"},
|
||||
{[]byte("world"), []byte("world")},
|
||||
{[]interface{}{[]byte("foo")}, []interface{}{[]byte("foo")}},
|
||||
{[]interface{}{[]byte("foo")}, []string{"foo"}},
|
||||
{[]interface{}{[]byte("hello"), []byte("world")}, []string{"hello", "world"}},
|
||||
{[]interface{}{[]byte("bar")}, [][]byte{[]byte("bar")}},
|
||||
{[]interface{}{[]byte("1")}, []int{1}},
|
||||
{[]interface{}{[]byte("1"), []byte("2")}, []int{1, 2}},
|
||||
{[]interface{}{[]byte("1"), []byte("2")}, []float64{1, 2}},
|
||||
{[]interface{}{[]byte("1")}, []byte{1}},
|
||||
{[]interface{}{[]byte("1")}, []bool{true}},
|
||||
}
|
||||
|
||||
func TestScanConversion(t *testing.T) {
|
||||
for _, tt := range scanConversionTests {
|
||||
values := []interface{}{tt.src}
|
||||
dest := reflect.New(reflect.TypeOf(tt.dest))
|
||||
values, err := redis.Scan(values, dest.Interface())
|
||||
if err != nil {
|
||||
t.Errorf("Scan(%v) returned error %v", tt, err)
|
||||
continue
|
||||
}
|
||||
if !reflect.DeepEqual(tt.dest, dest.Elem().Interface()) {
|
||||
t.Errorf("Scan(%v) returned %v, want %v", tt, dest.Elem().Interface(), tt.dest)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var scanConversionErrorTests = []struct {
|
||||
src interface{}
|
||||
dest interface{}
|
||||
}{
|
||||
{[]byte("1234"), byte(0)},
|
||||
{int64(1234), byte(0)},
|
||||
{[]byte("-1"), byte(0)},
|
||||
{int64(-1), byte(0)},
|
||||
{[]byte("junk"), false},
|
||||
{redis.Error("blah"), false},
|
||||
}
|
||||
|
||||
func TestScanConversionError(t *testing.T) {
|
||||
for _, tt := range scanConversionErrorTests {
|
||||
values := []interface{}{tt.src}
|
||||
dest := reflect.New(reflect.TypeOf(tt.dest))
|
||||
values, err := redis.Scan(values, dest.Interface())
|
||||
if err == nil {
|
||||
t.Errorf("Scan(%v) did not return error", tt)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func ExampleScan() {
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
c.Send("HMSET", "album:1", "title", "Red", "rating", 5)
|
||||
c.Send("HMSET", "album:2", "title", "Earthbound", "rating", 1)
|
||||
c.Send("HMSET", "album:3", "title", "Beat")
|
||||
c.Send("LPUSH", "albums", "1")
|
||||
c.Send("LPUSH", "albums", "2")
|
||||
c.Send("LPUSH", "albums", "3")
|
||||
values, err := redis.Values(c.Do("SORT", "albums",
|
||||
"BY", "album:*->rating",
|
||||
"GET", "album:*->title",
|
||||
"GET", "album:*->rating"))
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
|
||||
for len(values) > 0 {
|
||||
var title string
|
||||
rating := -1 // initialize to illegal value to detect nil.
|
||||
values, err = redis.Scan(values, &title, &rating)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
if rating == -1 {
|
||||
fmt.Println(title, "not-rated")
|
||||
} else {
|
||||
fmt.Println(title, rating)
|
||||
}
|
||||
}
|
||||
// Output:
|
||||
// Beat not-rated
|
||||
// Earthbound 1
|
||||
// Red 5
|
||||
}
|
||||
|
||||
type s0 struct {
|
||||
X int
|
||||
Y int `redis:"y"`
|
||||
Bt bool
|
||||
}
|
||||
|
||||
type s1 struct {
|
||||
X int `redis:"-"`
|
||||
I int `redis:"i"`
|
||||
U uint `redis:"u"`
|
||||
S string `redis:"s"`
|
||||
P []byte `redis:"p"`
|
||||
B bool `redis:"b"`
|
||||
Bt bool
|
||||
Bf bool
|
||||
s0
|
||||
}
|
||||
|
||||
var scanStructTests = []struct {
|
||||
title string
|
||||
reply []string
|
||||
value interface{}
|
||||
}{
|
||||
{"basic",
|
||||
[]string{"i", "-1234", "u", "5678", "s", "hello", "p", "world", "b", "t", "Bt", "1", "Bf", "0", "X", "123", "y", "456"},
|
||||
&s1{I: -1234, U: 5678, S: "hello", P: []byte("world"), B: true, Bt: true, Bf: false, s0: s0{X: 123, Y: 456}},
|
||||
},
|
||||
}
|
||||
|
||||
func TestScanStruct(t *testing.T) {
|
||||
for _, tt := range scanStructTests {
|
||||
|
||||
var reply []interface{}
|
||||
for _, v := range tt.reply {
|
||||
reply = append(reply, []byte(v))
|
||||
}
|
||||
|
||||
value := reflect.New(reflect.ValueOf(tt.value).Type().Elem())
|
||||
|
||||
if err := redis.ScanStruct(reply, value.Interface()); err != nil {
|
||||
t.Fatalf("ScanStruct(%s) returned error %v", tt.title, err)
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(value.Interface(), tt.value) {
|
||||
t.Fatalf("ScanStruct(%s) returned %v, want %v", tt.title, value.Interface(), tt.value)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestBadScanStructArgs(t *testing.T) {
|
||||
x := []interface{}{"A", "b"}
|
||||
test := func(v interface{}) {
|
||||
if err := redis.ScanStruct(x, v); err == nil {
|
||||
t.Errorf("Expect error for ScanStruct(%T, %T)", x, v)
|
||||
}
|
||||
}
|
||||
|
||||
test(nil)
|
||||
|
||||
var v0 *struct{}
|
||||
test(v0)
|
||||
|
||||
var v1 int
|
||||
test(&v1)
|
||||
|
||||
x = x[:1]
|
||||
v2 := struct{ A string }{}
|
||||
test(&v2)
|
||||
}
|
||||
|
||||
var scanSliceTests = []struct {
|
||||
src []interface{}
|
||||
fieldNames []string
|
||||
ok bool
|
||||
dest interface{}
|
||||
}{
|
||||
{
|
||||
[]interface{}{[]byte("1"), nil, []byte("-1")},
|
||||
nil,
|
||||
true,
|
||||
[]int{1, 0, -1},
|
||||
},
|
||||
{
|
||||
[]interface{}{[]byte("1"), nil, []byte("2")},
|
||||
nil,
|
||||
true,
|
||||
[]uint{1, 0, 2},
|
||||
},
|
||||
{
|
||||
[]interface{}{[]byte("-1")},
|
||||
nil,
|
||||
false,
|
||||
[]uint{1},
|
||||
},
|
||||
{
|
||||
[]interface{}{[]byte("hello"), nil, []byte("world")},
|
||||
nil,
|
||||
true,
|
||||
[][]byte{[]byte("hello"), nil, []byte("world")},
|
||||
},
|
||||
{
|
||||
[]interface{}{[]byte("hello"), nil, []byte("world")},
|
||||
nil,
|
||||
true,
|
||||
[]string{"hello", "", "world"},
|
||||
},
|
||||
{
|
||||
[]interface{}{[]byte("a1"), []byte("b1"), []byte("a2"), []byte("b2")},
|
||||
nil,
|
||||
true,
|
||||
[]struct{ A, B string }{{"a1", "b1"}, {"a2", "b2"}},
|
||||
},
|
||||
{
|
||||
[]interface{}{[]byte("a1"), []byte("b1")},
|
||||
nil,
|
||||
false,
|
||||
[]struct{ A, B, C string }{{"a1", "b1", ""}},
|
||||
},
|
||||
{
|
||||
[]interface{}{[]byte("a1"), []byte("b1"), []byte("a2"), []byte("b2")},
|
||||
nil,
|
||||
true,
|
||||
[]*struct{ A, B string }{{"a1", "b1"}, {"a2", "b2"}},
|
||||
},
|
||||
{
|
||||
[]interface{}{[]byte("a1"), []byte("b1"), []byte("a2"), []byte("b2")},
|
||||
[]string{"A", "B"},
|
||||
true,
|
||||
[]struct{ A, C, B string }{{"a1", "", "b1"}, {"a2", "", "b2"}},
|
||||
},
|
||||
{
|
||||
[]interface{}{[]byte("a1"), []byte("b1"), []byte("a2"), []byte("b2")},
|
||||
nil,
|
||||
false,
|
||||
[]struct{}{},
|
||||
},
|
||||
}
|
||||
|
||||
func TestScanSlice(t *testing.T) {
|
||||
for _, tt := range scanSliceTests {
|
||||
|
||||
typ := reflect.ValueOf(tt.dest).Type()
|
||||
dest := reflect.New(typ)
|
||||
|
||||
err := redis.ScanSlice(tt.src, dest.Interface(), tt.fieldNames...)
|
||||
if tt.ok != (err == nil) {
|
||||
t.Errorf("ScanSlice(%v, []%s, %v) returned error %v", tt.src, typ, tt.fieldNames, err)
|
||||
continue
|
||||
}
|
||||
if tt.ok && !reflect.DeepEqual(dest.Elem().Interface(), tt.dest) {
|
||||
t.Errorf("ScanSlice(src, []%s) returned %#v, want %#v", typ, dest.Elem().Interface(), tt.dest)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func ExampleScanSlice() {
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
c.Send("HMSET", "album:1", "title", "Red", "rating", 5)
|
||||
c.Send("HMSET", "album:2", "title", "Earthbound", "rating", 1)
|
||||
c.Send("HMSET", "album:3", "title", "Beat", "rating", 4)
|
||||
c.Send("LPUSH", "albums", "1")
|
||||
c.Send("LPUSH", "albums", "2")
|
||||
c.Send("LPUSH", "albums", "3")
|
||||
values, err := redis.Values(c.Do("SORT", "albums",
|
||||
"BY", "album:*->rating",
|
||||
"GET", "album:*->title",
|
||||
"GET", "album:*->rating"))
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
|
||||
var albums []struct {
|
||||
Title string
|
||||
Rating int
|
||||
}
|
||||
if err := redis.ScanSlice(values, &albums); err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
fmt.Printf("%v\n", albums)
|
||||
// Output:
|
||||
// [{Earthbound 1} {Beat 4} {Red 5}]
|
||||
}
|
||||
|
||||
var argsTests = []struct {
|
||||
title string
|
||||
actual redis.Args
|
||||
expected redis.Args
|
||||
}{
|
||||
{"struct ptr",
|
||||
redis.Args{}.AddFlat(&struct {
|
||||
I int `redis:"i"`
|
||||
U uint `redis:"u"`
|
||||
S string `redis:"s"`
|
||||
P []byte `redis:"p"`
|
||||
M map[string]string `redis:"m"`
|
||||
Bt bool
|
||||
Bf bool
|
||||
}{
|
||||
-1234, 5678, "hello", []byte("world"), map[string]string{"hello": "world"}, true, false,
|
||||
}),
|
||||
redis.Args{"i", int(-1234), "u", uint(5678), "s", "hello", "p", []byte("world"), "m", map[string]string{"hello": "world"}, "Bt", true, "Bf", false},
|
||||
},
|
||||
{"struct",
|
||||
redis.Args{}.AddFlat(struct{ I int }{123}),
|
||||
redis.Args{"I", 123},
|
||||
},
|
||||
{"slice",
|
||||
redis.Args{}.Add(1).AddFlat([]string{"a", "b", "c"}).Add(2),
|
||||
redis.Args{1, "a", "b", "c", 2},
|
||||
},
|
||||
{"struct omitempty",
|
||||
redis.Args{}.AddFlat(&struct {
|
||||
I int `redis:"i,omitempty"`
|
||||
U uint `redis:"u,omitempty"`
|
||||
S string `redis:"s,omitempty"`
|
||||
P []byte `redis:"p,omitempty"`
|
||||
M map[string]string `redis:"m,omitempty"`
|
||||
Bt bool `redis:"Bt,omitempty"`
|
||||
Bf bool `redis:"Bf,omitempty"`
|
||||
}{
|
||||
0, 0, "", []byte{}, map[string]string{}, true, false,
|
||||
}),
|
||||
redis.Args{"Bt", true},
|
||||
},
|
||||
}
|
||||
|
||||
func TestArgs(t *testing.T) {
|
||||
for _, tt := range argsTests {
|
||||
if !reflect.DeepEqual(tt.actual, tt.expected) {
|
||||
t.Fatalf("%s is %v, want %v", tt.title, tt.actual, tt.expected)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func ExampleArgs() {
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
var p1, p2 struct {
|
||||
Title string `redis:"title"`
|
||||
Author string `redis:"author"`
|
||||
Body string `redis:"body"`
|
||||
}
|
||||
|
||||
p1.Title = "Example"
|
||||
p1.Author = "Gary"
|
||||
p1.Body = "Hello"
|
||||
|
||||
if _, err := c.Do("HMSET", redis.Args{}.Add("id1").AddFlat(&p1)...); err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
|
||||
m := map[string]string{
|
||||
"title": "Example2",
|
||||
"author": "Steve",
|
||||
"body": "Map",
|
||||
}
|
||||
|
||||
if _, err := c.Do("HMSET", redis.Args{}.Add("id2").AddFlat(m)...); err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
|
||||
for _, id := range []string{"id1", "id2"} {
|
||||
|
||||
v, err := redis.Values(c.Do("HGETALL", id))
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
|
||||
if err := redis.ScanStruct(v, &p2); err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
|
||||
fmt.Printf("%+v\n", p2)
|
||||
}
|
||||
|
||||
// Output:
|
||||
// {Title:Example Author:Gary Body:Hello}
|
||||
// {Title:Example2 Author:Steve Body:Map}
|
||||
}
|
86
vendor/github.com/garyburd/redigo/redis/script.go
generated
vendored
86
vendor/github.com/garyburd/redigo/redis/script.go
generated
vendored
@ -1,86 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis
|
||||
|
||||
import (
|
||||
"crypto/sha1"
|
||||
"encoding/hex"
|
||||
"io"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Script encapsulates the source, hash and key count for a Lua script. See
|
||||
// http://redis.io/commands/eval for information on scripts in Redis.
|
||||
type Script struct {
|
||||
keyCount int
|
||||
src string
|
||||
hash string
|
||||
}
|
||||
|
||||
// NewScript returns a new script object. If keyCount is greater than or equal
|
||||
// to zero, then the count is automatically inserted in the EVAL command
|
||||
// argument list. If keyCount is less than zero, then the application supplies
|
||||
// the count as the first value in the keysAndArgs argument to the Do, Send and
|
||||
// SendHash methods.
|
||||
func NewScript(keyCount int, src string) *Script {
|
||||
h := sha1.New()
|
||||
io.WriteString(h, src)
|
||||
return &Script{keyCount, src, hex.EncodeToString(h.Sum(nil))}
|
||||
}
|
||||
|
||||
func (s *Script) args(spec string, keysAndArgs []interface{}) []interface{} {
|
||||
var args []interface{}
|
||||
if s.keyCount < 0 {
|
||||
args = make([]interface{}, 1+len(keysAndArgs))
|
||||
args[0] = spec
|
||||
copy(args[1:], keysAndArgs)
|
||||
} else {
|
||||
args = make([]interface{}, 2+len(keysAndArgs))
|
||||
args[0] = spec
|
||||
args[1] = s.keyCount
|
||||
copy(args[2:], keysAndArgs)
|
||||
}
|
||||
return args
|
||||
}
|
||||
|
||||
// Do evaluates the script. Under the covers, Do optimistically evaluates the
|
||||
// script using the EVALSHA command. If the command fails because the script is
|
||||
// not loaded, then Do evaluates the script using the EVAL command (thus
|
||||
// causing the script to load).
|
||||
func (s *Script) Do(c Conn, keysAndArgs ...interface{}) (interface{}, error) {
|
||||
v, err := c.Do("EVALSHA", s.args(s.hash, keysAndArgs)...)
|
||||
if e, ok := err.(Error); ok && strings.HasPrefix(string(e), "NOSCRIPT ") {
|
||||
v, err = c.Do("EVAL", s.args(s.src, keysAndArgs)...)
|
||||
}
|
||||
return v, err
|
||||
}
|
||||
|
||||
// SendHash evaluates the script without waiting for the reply. The script is
|
||||
// evaluated with the EVALSHA command. The application must ensure that the
|
||||
// script is loaded by a previous call to Send, Do or Load methods.
|
||||
func (s *Script) SendHash(c Conn, keysAndArgs ...interface{}) error {
|
||||
return c.Send("EVALSHA", s.args(s.hash, keysAndArgs)...)
|
||||
}
|
||||
|
||||
// Send evaluates the script without waiting for the reply.
|
||||
func (s *Script) Send(c Conn, keysAndArgs ...interface{}) error {
|
||||
return c.Send("EVAL", s.args(s.src, keysAndArgs)...)
|
||||
}
|
||||
|
||||
// Load loads the script without evaluating it.
|
||||
func (s *Script) Load(c Conn) error {
|
||||
_, err := c.Do("SCRIPT", "LOAD", s.src)
|
||||
return err
|
||||
}
|
100
vendor/github.com/garyburd/redigo/redis/script_test.go
generated
vendored
100
vendor/github.com/garyburd/redigo/redis/script_test.go
generated
vendored
@ -1,100 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis_test
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"reflect"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/garyburd/redigo/redis"
|
||||
)
|
||||
|
||||
var (
|
||||
// These variables are declared at package level to remove distracting
|
||||
// details from the examples.
|
||||
c redis.Conn
|
||||
reply interface{}
|
||||
err error
|
||||
)
|
||||
|
||||
func ExampleScript() {
|
||||
// Initialize a package-level variable with a script.
|
||||
var getScript = redis.NewScript(1, `return redis.call('get', KEYS[1])`)
|
||||
|
||||
// In a function, use the script Do method to evaluate the script. The Do
|
||||
// method optimistically uses the EVALSHA command. If the script is not
|
||||
// loaded, then the Do method falls back to the EVAL command.
|
||||
reply, err = getScript.Do(c, "foo")
|
||||
}
|
||||
|
||||
func TestScript(t *testing.T) {
|
||||
c, err := redis.DialDefaultServer()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
// To test fall back in Do, we make script unique by adding comment with current time.
|
||||
script := fmt.Sprintf("--%d\nreturn {KEYS[1],KEYS[2],ARGV[1],ARGV[2]}", time.Now().UnixNano())
|
||||
s := redis.NewScript(2, script)
|
||||
reply := []interface{}{[]byte("key1"), []byte("key2"), []byte("arg1"), []byte("arg2")}
|
||||
|
||||
v, err := s.Do(c, "key1", "key2", "arg1", "arg2")
|
||||
if err != nil {
|
||||
t.Errorf("s.Do(c, ...) returned %v", err)
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(v, reply) {
|
||||
t.Errorf("s.Do(c, ..); = %v, want %v", v, reply)
|
||||
}
|
||||
|
||||
err = s.Load(c)
|
||||
if err != nil {
|
||||
t.Errorf("s.Load(c) returned %v", err)
|
||||
}
|
||||
|
||||
err = s.SendHash(c, "key1", "key2", "arg1", "arg2")
|
||||
if err != nil {
|
||||
t.Errorf("s.SendHash(c, ...) returned %v", err)
|
||||
}
|
||||
|
||||
err = c.Flush()
|
||||
if err != nil {
|
||||
t.Errorf("c.Flush() returned %v", err)
|
||||
}
|
||||
|
||||
v, err = c.Receive()
|
||||
if !reflect.DeepEqual(v, reply) {
|
||||
t.Errorf("s.SendHash(c, ..); c.Receive() = %v, want %v", v, reply)
|
||||
}
|
||||
|
||||
err = s.Send(c, "key1", "key2", "arg1", "arg2")
|
||||
if err != nil {
|
||||
t.Errorf("s.Send(c, ...) returned %v", err)
|
||||
}
|
||||
|
||||
err = c.Flush()
|
||||
if err != nil {
|
||||
t.Errorf("c.Flush() returned %v", err)
|
||||
}
|
||||
|
||||
v, err = c.Receive()
|
||||
if !reflect.DeepEqual(v, reply) {
|
||||
t.Errorf("s.Send(c, ..); c.Receive() = %v, want %v", v, reply)
|
||||
}
|
||||
|
||||
}
|
177
vendor/github.com/garyburd/redigo/redis/test_test.go
generated
vendored
177
vendor/github.com/garyburd/redigo/redis/test_test.go
generated
vendored
@ -1,177 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"errors"
|
||||
"flag"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"os/exec"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
"testing"
|
||||
"time"
|
||||
)
|
||||
|
||||
func SetNowFunc(f func() time.Time) {
|
||||
nowFunc = f
|
||||
}
|
||||
|
||||
var (
|
||||
ErrNegativeInt = errNegativeInt
|
||||
|
||||
serverPath = flag.String("redis-server", "redis-server", "Path to redis server binary")
|
||||
serverBasePort = flag.Int("redis-port", 16379, "Beginning of port range for test servers")
|
||||
serverLogName = flag.String("redis-log", "", "Write Redis server logs to `filename`")
|
||||
serverLog = ioutil.Discard
|
||||
|
||||
defaultServerMu sync.Mutex
|
||||
defaultServer *Server
|
||||
defaultServerErr error
|
||||
)
|
||||
|
||||
type Server struct {
|
||||
name string
|
||||
cmd *exec.Cmd
|
||||
done chan struct{}
|
||||
}
|
||||
|
||||
func NewServer(name string, args ...string) (*Server, error) {
|
||||
s := &Server{
|
||||
name: name,
|
||||
cmd: exec.Command(*serverPath, args...),
|
||||
done: make(chan struct{}),
|
||||
}
|
||||
|
||||
r, err := s.cmd.StdoutPipe()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = s.cmd.Start()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
ready := make(chan error, 1)
|
||||
go s.watch(r, ready)
|
||||
|
||||
select {
|
||||
case err = <-ready:
|
||||
case <-time.After(time.Second * 10):
|
||||
err = errors.New("timeout waiting for server to start")
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
s.Stop()
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return s, nil
|
||||
}
|
||||
|
||||
func (s *Server) watch(r io.Reader, ready chan error) {
|
||||
fmt.Fprintf(serverLog, "%d START %s \n", s.cmd.Process.Pid, s.name)
|
||||
var listening bool
|
||||
var text string
|
||||
scn := bufio.NewScanner(r)
|
||||
for scn.Scan() {
|
||||
text = scn.Text()
|
||||
fmt.Fprintf(serverLog, "%s\n", text)
|
||||
if !listening {
|
||||
if strings.Contains(text, "The server is now ready to accept connections on port") {
|
||||
listening = true
|
||||
ready <- nil
|
||||
}
|
||||
}
|
||||
}
|
||||
if !listening {
|
||||
ready <- fmt.Errorf("server exited: %s", text)
|
||||
}
|
||||
s.cmd.Wait()
|
||||
fmt.Fprintf(serverLog, "%d STOP %s \n", s.cmd.Process.Pid, s.name)
|
||||
close(s.done)
|
||||
}
|
||||
|
||||
func (s *Server) Stop() {
|
||||
s.cmd.Process.Signal(os.Interrupt)
|
||||
<-s.done
|
||||
}
|
||||
|
||||
// stopDefaultServer stops the server created by DialDefaultServer.
|
||||
func stopDefaultServer() {
|
||||
defaultServerMu.Lock()
|
||||
defer defaultServerMu.Unlock()
|
||||
if defaultServer != nil {
|
||||
defaultServer.Stop()
|
||||
defaultServer = nil
|
||||
}
|
||||
}
|
||||
|
||||
// startDefaultServer starts the default server if not already running.
|
||||
func startDefaultServer() error {
|
||||
defaultServerMu.Lock()
|
||||
defer defaultServerMu.Unlock()
|
||||
if defaultServer != nil || defaultServerErr != nil {
|
||||
return defaultServerErr
|
||||
}
|
||||
defaultServer, defaultServerErr = NewServer(
|
||||
"default",
|
||||
"--port", strconv.Itoa(*serverBasePort),
|
||||
"--save", "",
|
||||
"--appendonly", "no")
|
||||
return defaultServerErr
|
||||
}
|
||||
|
||||
// DialDefaultServer starts the test server if not already started and dials a
|
||||
// connection to the server.
|
||||
func DialDefaultServer() (Conn, error) {
|
||||
if err := startDefaultServer(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
c, err := Dial("tcp", fmt.Sprintf(":%d", *serverBasePort), DialReadTimeout(1*time.Second), DialWriteTimeout(1*time.Second))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
c.Do("FLUSHDB")
|
||||
return c, nil
|
||||
}
|
||||
|
||||
func TestMain(m *testing.M) {
|
||||
os.Exit(func() int {
|
||||
flag.Parse()
|
||||
|
||||
var f *os.File
|
||||
if *serverLogName != "" {
|
||||
var err error
|
||||
f, err = os.OpenFile(*serverLogName, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0600)
|
||||
if err != nil {
|
||||
fmt.Fprintf(os.Stderr, "Error opening redis-log: %v\n", err)
|
||||
return 1
|
||||
}
|
||||
defer f.Close()
|
||||
serverLog = f
|
||||
}
|
||||
|
||||
defer stopDefaultServer()
|
||||
|
||||
return m.Run()
|
||||
}())
|
||||
}
|
113
vendor/github.com/garyburd/redigo/redis/zpop_example_test.go
generated
vendored
113
vendor/github.com/garyburd/redigo/redis/zpop_example_test.go
generated
vendored
@ -1,113 +0,0 @@
|
||||
// Copyright 2013 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redis_test
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/garyburd/redigo/redis"
|
||||
)
|
||||
|
||||
// zpop pops a value from the ZSET key using WATCH/MULTI/EXEC commands.
|
||||
func zpop(c redis.Conn, key string) (result string, err error) {
|
||||
|
||||
defer func() {
|
||||
// Return connection to normal state on error.
|
||||
if err != nil {
|
||||
c.Do("DISCARD")
|
||||
}
|
||||
}()
|
||||
|
||||
// Loop until transaction is successful.
|
||||
for {
|
||||
if _, err := c.Do("WATCH", key); err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
members, err := redis.Strings(c.Do("ZRANGE", key, 0, 0))
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
if len(members) != 1 {
|
||||
return "", redis.ErrNil
|
||||
}
|
||||
|
||||
c.Send("MULTI")
|
||||
c.Send("ZREM", key, members[0])
|
||||
queued, err := c.Do("EXEC")
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
if queued != nil {
|
||||
result = members[0]
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
return result, nil
|
||||
}
|
||||
|
||||
// zpopScript pops a value from a ZSET.
|
||||
var zpopScript = redis.NewScript(1, `
|
||||
local r = redis.call('ZRANGE', KEYS[1], 0, 0)
|
||||
if r ~= nil then
|
||||
r = r[1]
|
||||
redis.call('ZREM', KEYS[1], r)
|
||||
end
|
||||
return r
|
||||
`)
|
||||
|
||||
// This example implements ZPOP as described at
|
||||
// http://redis.io/topics/transactions using WATCH/MULTI/EXEC and scripting.
|
||||
func Example_zpop() {
|
||||
c, err := dial()
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
// Add test data using a pipeline.
|
||||
|
||||
for i, member := range []string{"red", "blue", "green"} {
|
||||
c.Send("ZADD", "zset", i, member)
|
||||
}
|
||||
if _, err := c.Do(""); err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
|
||||
// Pop using WATCH/MULTI/EXEC
|
||||
|
||||
v, err := zpop(c, "zset")
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
fmt.Println(v)
|
||||
|
||||
// Pop using a script.
|
||||
|
||||
v, err = redis.String(zpopScript.Do(c, "zset"))
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
return
|
||||
}
|
||||
fmt.Println(v)
|
||||
|
||||
// Output:
|
||||
// red
|
||||
// blue
|
||||
}
|
152
vendor/github.com/garyburd/redigo/redisx/connmux.go
generated
vendored
152
vendor/github.com/garyburd/redigo/redisx/connmux.go
generated
vendored
@ -1,152 +0,0 @@
|
||||
// Copyright 2014 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redisx
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"sync"
|
||||
|
||||
"github.com/garyburd/redigo/internal"
|
||||
"github.com/garyburd/redigo/redis"
|
||||
)
|
||||
|
||||
// ConnMux multiplexes one or more connections to a single underlying
|
||||
// connection. The ConnMux connections do not support concurrency, commands
|
||||
// that associate server side state with the connection or commands that put
|
||||
// the connection in a special mode.
|
||||
type ConnMux struct {
|
||||
c redis.Conn
|
||||
|
||||
sendMu sync.Mutex
|
||||
sendID uint
|
||||
|
||||
recvMu sync.Mutex
|
||||
recvID uint
|
||||
recvWait map[uint]chan struct{}
|
||||
}
|
||||
|
||||
func NewConnMux(c redis.Conn) *ConnMux {
|
||||
return &ConnMux{c: c, recvWait: make(map[uint]chan struct{})}
|
||||
}
|
||||
|
||||
// Get gets a connection. The application must close the returned connection.
|
||||
func (p *ConnMux) Get() redis.Conn {
|
||||
c := &muxConn{p: p}
|
||||
c.ids = c.buf[:0]
|
||||
return c
|
||||
}
|
||||
|
||||
// Close closes the underlying connection.
|
||||
func (p *ConnMux) Close() error {
|
||||
return p.c.Close()
|
||||
}
|
||||
|
||||
type muxConn struct {
|
||||
p *ConnMux
|
||||
ids []uint
|
||||
buf [8]uint
|
||||
}
|
||||
|
||||
func (c *muxConn) send(flush bool, cmd string, args ...interface{}) error {
|
||||
if internal.LookupCommandInfo(cmd).Set != 0 {
|
||||
return errors.New("command not supported by mux pool")
|
||||
}
|
||||
p := c.p
|
||||
p.sendMu.Lock()
|
||||
id := p.sendID
|
||||
c.ids = append(c.ids, id)
|
||||
p.sendID++
|
||||
err := p.c.Send(cmd, args...)
|
||||
if flush {
|
||||
err = p.c.Flush()
|
||||
}
|
||||
p.sendMu.Unlock()
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *muxConn) Send(cmd string, args ...interface{}) error {
|
||||
return c.send(false, cmd, args...)
|
||||
}
|
||||
|
||||
func (c *muxConn) Flush() error {
|
||||
p := c.p
|
||||
p.sendMu.Lock()
|
||||
err := p.c.Flush()
|
||||
p.sendMu.Unlock()
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *muxConn) Receive() (interface{}, error) {
|
||||
if len(c.ids) == 0 {
|
||||
return nil, errors.New("mux pool underflow")
|
||||
}
|
||||
|
||||
id := c.ids[0]
|
||||
c.ids = c.ids[1:]
|
||||
if len(c.ids) == 0 {
|
||||
c.ids = c.buf[:0]
|
||||
}
|
||||
|
||||
p := c.p
|
||||
p.recvMu.Lock()
|
||||
if p.recvID != id {
|
||||
ch := make(chan struct{})
|
||||
p.recvWait[id] = ch
|
||||
p.recvMu.Unlock()
|
||||
<-ch
|
||||
p.recvMu.Lock()
|
||||
if p.recvID != id {
|
||||
panic("out of sync")
|
||||
}
|
||||
}
|
||||
|
||||
v, err := p.c.Receive()
|
||||
|
||||
id++
|
||||
p.recvID = id
|
||||
ch, ok := p.recvWait[id]
|
||||
if ok {
|
||||
delete(p.recvWait, id)
|
||||
}
|
||||
p.recvMu.Unlock()
|
||||
if ok {
|
||||
ch <- struct{}{}
|
||||
}
|
||||
|
||||
return v, err
|
||||
}
|
||||
|
||||
func (c *muxConn) Close() error {
|
||||
var err error
|
||||
if len(c.ids) == 0 {
|
||||
return nil
|
||||
}
|
||||
c.Flush()
|
||||
for _ = range c.ids {
|
||||
_, err = c.Receive()
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *muxConn) Do(cmd string, args ...interface{}) (interface{}, error) {
|
||||
if err := c.send(true, cmd, args...); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return c.Receive()
|
||||
}
|
||||
|
||||
func (c *muxConn) Err() error {
|
||||
return c.p.c.Err()
|
||||
}
|
259
vendor/github.com/garyburd/redigo/redisx/connmux_test.go
generated
vendored
259
vendor/github.com/garyburd/redigo/redisx/connmux_test.go
generated
vendored
@ -1,259 +0,0 @@
|
||||
// Copyright 2014 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
package redisx_test
|
||||
|
||||
import (
|
||||
"net/textproto"
|
||||
"sync"
|
||||
"testing"
|
||||
|
||||
"github.com/garyburd/redigo/internal/redistest"
|
||||
"github.com/garyburd/redigo/redis"
|
||||
"github.com/garyburd/redigo/redisx"
|
||||
)
|
||||
|
||||
func TestConnMux(t *testing.T) {
|
||||
c, err := redistest.Dial()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
m := redisx.NewConnMux(c)
|
||||
defer m.Close()
|
||||
|
||||
c1 := m.Get()
|
||||
c2 := m.Get()
|
||||
c1.Send("ECHO", "hello")
|
||||
c2.Send("ECHO", "world")
|
||||
c1.Flush()
|
||||
c2.Flush()
|
||||
s, err := redis.String(c1.Receive())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if s != "hello" {
|
||||
t.Fatalf("echo returned %q, want %q", s, "hello")
|
||||
}
|
||||
s, err = redis.String(c2.Receive())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if s != "world" {
|
||||
t.Fatalf("echo returned %q, want %q", s, "world")
|
||||
}
|
||||
c1.Close()
|
||||
c2.Close()
|
||||
}
|
||||
|
||||
func TestConnMuxClose(t *testing.T) {
|
||||
c, err := redistest.Dial()
|
||||
if err != nil {
|
||||
t.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
m := redisx.NewConnMux(c)
|
||||
defer m.Close()
|
||||
|
||||
c1 := m.Get()
|
||||
c2 := m.Get()
|
||||
|
||||
if err := c1.Send("ECHO", "hello"); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := c1.Close(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if err := c2.Send("ECHO", "world"); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if err := c2.Flush(); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
s, err := redis.String(c2.Receive())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if s != "world" {
|
||||
t.Fatalf("echo returned %q, want %q", s, "world")
|
||||
}
|
||||
c2.Close()
|
||||
}
|
||||
|
||||
func BenchmarkConn(b *testing.B) {
|
||||
b.StopTimer()
|
||||
c, err := redistest.Dial()
|
||||
if err != nil {
|
||||
b.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
b.StartTimer()
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
if _, err := c.Do("PING"); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkConnMux(b *testing.B) {
|
||||
b.StopTimer()
|
||||
c, err := redistest.Dial()
|
||||
if err != nil {
|
||||
b.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
m := redisx.NewConnMux(c)
|
||||
defer m.Close()
|
||||
|
||||
b.StartTimer()
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
c := m.Get()
|
||||
if _, err := c.Do("PING"); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
c.Close()
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkPool(b *testing.B) {
|
||||
b.StopTimer()
|
||||
|
||||
p := redis.Pool{Dial: redistest.Dial, MaxIdle: 1}
|
||||
defer p.Close()
|
||||
|
||||
// Fill the pool.
|
||||
c := p.Get()
|
||||
if err := c.Err(); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
c.Close()
|
||||
|
||||
b.StartTimer()
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
c := p.Get()
|
||||
if _, err := c.Do("PING"); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
c.Close()
|
||||
}
|
||||
}
|
||||
|
||||
const numConcurrent = 10
|
||||
|
||||
func BenchmarkConnMuxConcurrent(b *testing.B) {
|
||||
b.StopTimer()
|
||||
c, err := redistest.Dial()
|
||||
if err != nil {
|
||||
b.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
m := redisx.NewConnMux(c)
|
||||
|
||||
var wg sync.WaitGroup
|
||||
wg.Add(numConcurrent)
|
||||
|
||||
b.StartTimer()
|
||||
|
||||
for i := 0; i < numConcurrent; i++ {
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
for i := 0; i < b.N; i++ {
|
||||
c := m.Get()
|
||||
if _, err := c.Do("PING"); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
c.Close()
|
||||
}
|
||||
}()
|
||||
}
|
||||
wg.Wait()
|
||||
}
|
||||
|
||||
func BenchmarkPoolConcurrent(b *testing.B) {
|
||||
b.StopTimer()
|
||||
|
||||
p := redis.Pool{Dial: redistest.Dial, MaxIdle: numConcurrent}
|
||||
defer p.Close()
|
||||
|
||||
// Fill the pool.
|
||||
conns := make([]redis.Conn, numConcurrent)
|
||||
for i := range conns {
|
||||
c := p.Get()
|
||||
if err := c.Err(); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
conns[i] = c
|
||||
}
|
||||
for _, c := range conns {
|
||||
c.Close()
|
||||
}
|
||||
|
||||
var wg sync.WaitGroup
|
||||
wg.Add(numConcurrent)
|
||||
|
||||
b.StartTimer()
|
||||
|
||||
for i := 0; i < numConcurrent; i++ {
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
for i := 0; i < b.N; i++ {
|
||||
c := p.Get()
|
||||
if _, err := c.Do("PING"); err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
c.Close()
|
||||
}
|
||||
}()
|
||||
}
|
||||
wg.Wait()
|
||||
}
|
||||
|
||||
func BenchmarkPipelineConcurrency(b *testing.B) {
|
||||
b.StopTimer()
|
||||
c, err := redistest.Dial()
|
||||
if err != nil {
|
||||
b.Fatalf("error connection to database, %v", err)
|
||||
}
|
||||
defer c.Close()
|
||||
|
||||
var wg sync.WaitGroup
|
||||
wg.Add(numConcurrent)
|
||||
|
||||
var pipeline textproto.Pipeline
|
||||
|
||||
b.StartTimer()
|
||||
|
||||
for i := 0; i < numConcurrent; i++ {
|
||||
go func() {
|
||||
defer wg.Done()
|
||||
for i := 0; i < b.N; i++ {
|
||||
id := pipeline.Next()
|
||||
pipeline.StartRequest(id)
|
||||
c.Send("PING")
|
||||
c.Flush()
|
||||
pipeline.EndRequest(id)
|
||||
pipeline.StartResponse(id)
|
||||
_, err := c.Receive()
|
||||
if err != nil {
|
||||
b.Fatal(err)
|
||||
}
|
||||
pipeline.EndResponse(id)
|
||||
}
|
||||
}()
|
||||
}
|
||||
wg.Wait()
|
||||
}
|
17
vendor/github.com/garyburd/redigo/redisx/doc.go
generated
vendored
17
vendor/github.com/garyburd/redigo/redisx/doc.go
generated
vendored
@ -1,17 +0,0 @@
|
||||
// Copyright 2012 Gary Burd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License"): you may
|
||||
// not use this file except in compliance with the License. You may obtain
|
||||
// a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
||||
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
||||
// License for the specific language governing permissions and limitations
|
||||
// under the License.
|
||||
|
||||
// Package redisx contains experimental features for Redigo. Features in this
|
||||
// package may be modified or deleted at any time.
|
||||
package redisx // import "github.com/garyburd/redigo/redisx"
|
16
vendor/github.com/golang/snappy/.gitignore
generated
vendored
16
vendor/github.com/golang/snappy/.gitignore
generated
vendored
@ -1,16 +0,0 @@
|
||||
cmd/snappytool/snappytool
|
||||
testdata/bench
|
||||
|
||||
# These explicitly listed benchmark data files are for an obsolete version of
|
||||
# snappy_test.go.
|
||||
testdata/alice29.txt
|
||||
testdata/asyoulik.txt
|
||||
testdata/fireworks.jpeg
|
||||
testdata/geo.protodata
|
||||
testdata/html
|
||||
testdata/html_x_4
|
||||
testdata/kppkn.gtb
|
||||
testdata/lcet10.txt
|
||||
testdata/paper-100k.pdf
|
||||
testdata/plrabn12.txt
|
||||
testdata/urls.10K
|
15
vendor/github.com/golang/snappy/AUTHORS
generated
vendored
15
vendor/github.com/golang/snappy/AUTHORS
generated
vendored
@ -1,15 +0,0 @@
|
||||
# This is the official list of Snappy-Go authors for copyright purposes.
|
||||
# This file is distinct from the CONTRIBUTORS files.
|
||||
# See the latter for an explanation.
|
||||
|
||||
# Names should be added to this file as
|
||||
# Name or Organization <email address>
|
||||
# The email address is not required for organizations.
|
||||
|
||||
# Please keep the list sorted.
|
||||
|
||||
Damian Gryski <dgryski@gmail.com>
|
||||
Google Inc.
|
||||
Jan Mercl <0xjnml@gmail.com>
|
||||
Rodolfo Carvalho <rhcarvalho@gmail.com>
|
||||
Sebastien Binet <seb.binet@gmail.com>
|
37
vendor/github.com/golang/snappy/CONTRIBUTORS
generated
vendored
37
vendor/github.com/golang/snappy/CONTRIBUTORS
generated
vendored
@ -1,37 +0,0 @@
|
||||
# This is the official list of people who can contribute
|
||||
# (and typically have contributed) code to the Snappy-Go repository.
|
||||
# The AUTHORS file lists the copyright holders; this file
|
||||
# lists people. For example, Google employees are listed here
|
||||
# but not in AUTHORS, because Google holds the copyright.
|
||||
#
|
||||
# The submission process automatically checks to make sure
|
||||
# that people submitting code are listed in this file (by email address).
|
||||
#
|
||||
# Names should be added to this file only after verifying that
|
||||
# the individual or the individual's organization has agreed to
|
||||
# the appropriate Contributor License Agreement, found here:
|
||||
#
|
||||
# http://code.google.com/legal/individual-cla-v1.0.html
|
||||
# http://code.google.com/legal/corporate-cla-v1.0.html
|
||||
#
|
||||
# The agreement for individuals can be filled out on the web.
|
||||
#
|
||||
# When adding J Random Contributor's name to this file,
|
||||
# either J's name or J's organization's name should be
|
||||
# added to the AUTHORS file, depending on whether the
|
||||
# individual or corporate CLA was used.
|
||||
|
||||
# Names should be added to this file like so:
|
||||
# Name <email address>
|
||||
|
||||
# Please keep the list sorted.
|
||||
|
||||
Damian Gryski <dgryski@gmail.com>
|
||||
Jan Mercl <0xjnml@gmail.com>
|
||||
Kai Backman <kaib@golang.org>
|
||||
Marc-Antoine Ruel <maruel@chromium.org>
|
||||
Nigel Tao <nigeltao@golang.org>
|
||||
Rob Pike <r@golang.org>
|
||||
Rodolfo Carvalho <rhcarvalho@gmail.com>
|
||||
Russ Cox <rsc@golang.org>
|
||||
Sebastien Binet <seb.binet@gmail.com>
|
27
vendor/github.com/golang/snappy/LICENSE
generated
vendored
27
vendor/github.com/golang/snappy/LICENSE
generated
vendored
@ -1,27 +0,0 @@
|
||||
Copyright (c) 2011 The Snappy-Go Authors. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following disclaimer
|
||||
in the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of Google Inc. nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
107
vendor/github.com/golang/snappy/README
generated
vendored
107
vendor/github.com/golang/snappy/README
generated
vendored
@ -1,107 +0,0 @@
|
||||
The Snappy compression format in the Go programming language.
|
||||
|
||||
To download and install from source:
|
||||
$ go get github.com/golang/snappy
|
||||
|
||||
Unless otherwise noted, the Snappy-Go source files are distributed
|
||||
under the BSD-style license found in the LICENSE file.
|
||||
|
||||
|
||||
|
||||
Benchmarks.
|
||||
|
||||
The golang/snappy benchmarks include compressing (Z) and decompressing (U) ten
|
||||
or so files, the same set used by the C++ Snappy code (github.com/google/snappy
|
||||
and note the "google", not "golang"). On an "Intel(R) Core(TM) i7-3770 CPU @
|
||||
3.40GHz", Go's GOARCH=amd64 numbers as of 2016-05-29:
|
||||
|
||||
"go test -test.bench=."
|
||||
|
||||
_UFlat0-8 2.19GB/s ± 0% html
|
||||
_UFlat1-8 1.41GB/s ± 0% urls
|
||||
_UFlat2-8 23.5GB/s ± 2% jpg
|
||||
_UFlat3-8 1.91GB/s ± 0% jpg_200
|
||||
_UFlat4-8 14.0GB/s ± 1% pdf
|
||||
_UFlat5-8 1.97GB/s ± 0% html4
|
||||
_UFlat6-8 814MB/s ± 0% txt1
|
||||
_UFlat7-8 785MB/s ± 0% txt2
|
||||
_UFlat8-8 857MB/s ± 0% txt3
|
||||
_UFlat9-8 719MB/s ± 1% txt4
|
||||
_UFlat10-8 2.84GB/s ± 0% pb
|
||||
_UFlat11-8 1.05GB/s ± 0% gaviota
|
||||
|
||||
_ZFlat0-8 1.04GB/s ± 0% html
|
||||
_ZFlat1-8 534MB/s ± 0% urls
|
||||
_ZFlat2-8 15.7GB/s ± 1% jpg
|
||||
_ZFlat3-8 740MB/s ± 3% jpg_200
|
||||
_ZFlat4-8 9.20GB/s ± 1% pdf
|
||||
_ZFlat5-8 991MB/s ± 0% html4
|
||||
_ZFlat6-8 379MB/s ± 0% txt1
|
||||
_ZFlat7-8 352MB/s ± 0% txt2
|
||||
_ZFlat8-8 396MB/s ± 1% txt3
|
||||
_ZFlat9-8 327MB/s ± 1% txt4
|
||||
_ZFlat10-8 1.33GB/s ± 1% pb
|
||||
_ZFlat11-8 605MB/s ± 1% gaviota
|
||||
|
||||
|
||||
|
||||
"go test -test.bench=. -tags=noasm"
|
||||
|
||||
_UFlat0-8 621MB/s ± 2% html
|
||||
_UFlat1-8 494MB/s ± 1% urls
|
||||
_UFlat2-8 23.2GB/s ± 1% jpg
|
||||
_UFlat3-8 1.12GB/s ± 1% jpg_200
|
||||
_UFlat4-8 4.35GB/s ± 1% pdf
|
||||
_UFlat5-8 609MB/s ± 0% html4
|
||||
_UFlat6-8 296MB/s ± 0% txt1
|
||||
_UFlat7-8 288MB/s ± 0% txt2
|
||||
_UFlat8-8 309MB/s ± 1% txt3
|
||||
_UFlat9-8 280MB/s ± 1% txt4
|
||||
_UFlat10-8 753MB/s ± 0% pb
|
||||
_UFlat11-8 400MB/s ± 0% gaviota
|
||||
|
||||
_ZFlat0-8 409MB/s ± 1% html
|
||||
_ZFlat1-8 250MB/s ± 1% urls
|
||||
_ZFlat2-8 12.3GB/s ± 1% jpg
|
||||
_ZFlat3-8 132MB/s ± 0% jpg_200
|
||||
_ZFlat4-8 2.92GB/s ± 0% pdf
|
||||
_ZFlat5-8 405MB/s ± 1% html4
|
||||
_ZFlat6-8 179MB/s ± 1% txt1
|
||||
_ZFlat7-8 170MB/s ± 1% txt2
|
||||
_ZFlat8-8 189MB/s ± 1% txt3
|
||||
_ZFlat9-8 164MB/s ± 1% txt4
|
||||
_ZFlat10-8 479MB/s ± 1% pb
|
||||
_ZFlat11-8 270MB/s ± 1% gaviota
|
||||
|
||||
|
||||
|
||||
For comparison (Go's encoded output is byte-for-byte identical to C++'s), here
|
||||
are the numbers from C++ Snappy's
|
||||
|
||||
make CXXFLAGS="-O2 -DNDEBUG -g" clean snappy_unittest.log && cat snappy_unittest.log
|
||||
|
||||
BM_UFlat/0 2.4GB/s html
|
||||
BM_UFlat/1 1.4GB/s urls
|
||||
BM_UFlat/2 21.8GB/s jpg
|
||||
BM_UFlat/3 1.5GB/s jpg_200
|
||||
BM_UFlat/4 13.3GB/s pdf
|
||||
BM_UFlat/5 2.1GB/s html4
|
||||
BM_UFlat/6 1.0GB/s txt1
|
||||
BM_UFlat/7 959.4MB/s txt2
|
||||
BM_UFlat/8 1.0GB/s txt3
|
||||
BM_UFlat/9 864.5MB/s txt4
|
||||
BM_UFlat/10 2.9GB/s pb
|
||||
BM_UFlat/11 1.2GB/s gaviota
|
||||
|
||||
BM_ZFlat/0 944.3MB/s html (22.31 %)
|
||||
BM_ZFlat/1 501.6MB/s urls (47.78 %)
|
||||
BM_ZFlat/2 14.3GB/s jpg (99.95 %)
|
||||
BM_ZFlat/3 538.3MB/s jpg_200 (73.00 %)
|
||||
BM_ZFlat/4 8.3GB/s pdf (83.30 %)
|
||||
BM_ZFlat/5 903.5MB/s html4 (22.52 %)
|
||||
BM_ZFlat/6 336.0MB/s txt1 (57.88 %)
|
||||
BM_ZFlat/7 312.3MB/s txt2 (61.91 %)
|
||||
BM_ZFlat/8 353.1MB/s txt3 (54.99 %)
|
||||
BM_ZFlat/9 289.9MB/s txt4 (66.26 %)
|
||||
BM_ZFlat/10 1.2GB/s pb (19.68 %)
|
||||
BM_ZFlat/11 527.4MB/s gaviota (37.72 %)
|
77
vendor/github.com/golang/snappy/cmd/snappytool/main.cpp
generated
vendored
77
vendor/github.com/golang/snappy/cmd/snappytool/main.cpp
generated
vendored
@ -1,77 +0,0 @@
|
||||
/*
|
||||
To build the snappytool binary:
|
||||
g++ main.cpp /usr/lib/libsnappy.a -o snappytool
|
||||
or, if you have built the C++ snappy library from source:
|
||||
g++ main.cpp /path/to/your/snappy/.libs/libsnappy.a -o snappytool
|
||||
after running "make" from your snappy checkout directory.
|
||||
*/
|
||||
|
||||
#include <errno.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include "snappy.h"
|
||||
|
||||
#define N 1000000
|
||||
|
||||
char dst[N];
|
||||
char src[N];
|
||||
|
||||
int main(int argc, char** argv) {
|
||||
// Parse args.
|
||||
if (argc != 2) {
|
||||
fprintf(stderr, "exactly one of -d or -e must be given\n");
|
||||
return 1;
|
||||
}
|
||||
bool decode = strcmp(argv[1], "-d") == 0;
|
||||
bool encode = strcmp(argv[1], "-e") == 0;
|
||||
if (decode == encode) {
|
||||
fprintf(stderr, "exactly one of -d or -e must be given\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
// Read all of stdin into src[:s].
|
||||
size_t s = 0;
|
||||
while (1) {
|
||||
if (s == N) {
|
||||
fprintf(stderr, "input too large\n");
|
||||
return 1;
|
||||
}
|
||||
ssize_t n = read(0, src+s, N-s);
|
||||
if (n == 0) {
|
||||
break;
|
||||
}
|
||||
if (n < 0) {
|
||||
fprintf(stderr, "read error: %s\n", strerror(errno));
|
||||
// TODO: handle EAGAIN, EINTR?
|
||||
return 1;
|
||||
}
|
||||
s += n;
|
||||
}
|
||||
|
||||
// Encode or decode src[:s] to dst[:d], and write to stdout.
|
||||
size_t d = 0;
|
||||
if (encode) {
|
||||
if (N < snappy::MaxCompressedLength(s)) {
|
||||
fprintf(stderr, "input too large after encoding\n");
|
||||
return 1;
|
||||
}
|
||||
snappy::RawCompress(src, s, dst, &d);
|
||||
} else {
|
||||
if (!snappy::GetUncompressedLength(src, s, &d)) {
|
||||
fprintf(stderr, "could not get uncompressed length\n");
|
||||
return 1;
|
||||
}
|
||||
if (N < d) {
|
||||
fprintf(stderr, "input too large after decoding\n");
|
||||
return 1;
|
||||
}
|
||||
if (!snappy::RawUncompress(src, s, dst)) {
|
||||
fprintf(stderr, "input was not valid Snappy-compressed data\n");
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
write(1, dst, d);
|
||||
return 0;
|
||||
}
|
237
vendor/github.com/golang/snappy/decode.go
generated
vendored
237
vendor/github.com/golang/snappy/decode.go
generated
vendored
@ -1,237 +0,0 @@
|
||||
// Copyright 2011 The Snappy-Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
package snappy
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
)
|
||||
|
||||
var (
|
||||
// ErrCorrupt reports that the input is invalid.
|
||||
ErrCorrupt = errors.New("snappy: corrupt input")
|
||||
// ErrTooLarge reports that the uncompressed length is too large.
|
||||
ErrTooLarge = errors.New("snappy: decoded block is too large")
|
||||
// ErrUnsupported reports that the input isn't supported.
|
||||
ErrUnsupported = errors.New("snappy: unsupported input")
|
||||
|
||||
errUnsupportedLiteralLength = errors.New("snappy: unsupported literal length")
|
||||
)
|
||||
|
||||
// DecodedLen returns the length of the decoded block.
|
||||
func DecodedLen(src []byte) (int, error) {
|
||||
v, _, err := decodedLen(src)
|
||||
return v, err
|
||||
}
|
||||
|
||||
// decodedLen returns the length of the decoded block and the number of bytes
|
||||
// that the length header occupied.
|
||||
func decodedLen(src []byte) (blockLen, headerLen int, err error) {
|
||||
v, n := binary.Uvarint(src)
|
||||
if n <= 0 || v > 0xffffffff {
|
||||
return 0, 0, ErrCorrupt
|
||||
}
|
||||
|
||||
const wordSize = 32 << (^uint(0) >> 32 & 1)
|
||||
if wordSize == 32 && v > 0x7fffffff {
|
||||
return 0, 0, ErrTooLarge
|
||||
}
|
||||
return int(v), n, nil
|
||||
}
|
||||
|
||||
const (
|
||||
decodeErrCodeCorrupt = 1
|
||||
decodeErrCodeUnsupportedLiteralLength = 2
|
||||
)
|
||||
|
||||
// Decode returns the decoded form of src. The returned slice may be a sub-
|
||||
// slice of dst if dst was large enough to hold the entire decoded block.
|
||||
// Otherwise, a newly allocated slice will be returned.
|
||||
//
|
||||
// The dst and src must not overlap. It is valid to pass a nil dst.
|
||||
func Decode(dst, src []byte) ([]byte, error) {
|
||||
dLen, s, err := decodedLen(src)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if dLen <= len(dst) {
|
||||
dst = dst[:dLen]
|
||||
} else {
|
||||
dst = make([]byte, dLen)
|
||||
}
|
||||
switch decode(dst, src[s:]) {
|
||||
case 0:
|
||||
return dst, nil
|
||||
case decodeErrCodeUnsupportedLiteralLength:
|
||||
return nil, errUnsupportedLiteralLength
|
||||
}
|
||||
return nil, ErrCorrupt
|
||||
}
|
||||
|
||||
// NewReader returns a new Reader that decompresses from r, using the framing
|
||||
// format described at
|
||||
// https://github.com/google/snappy/blob/master/framing_format.txt
|
||||
func NewReader(r io.Reader) *Reader {
|
||||
return &Reader{
|
||||
r: r,
|
||||
decoded: make([]byte, maxBlockSize),
|
||||
buf: make([]byte, maxEncodedLenOfMaxBlockSize+checksumSize),
|
||||
}
|
||||
}
|
||||
|
||||
// Reader is an io.Reader that can read Snappy-compressed bytes.
|
||||
type Reader struct {
|
||||
r io.Reader
|
||||
err error
|
||||
decoded []byte
|
||||
buf []byte
|
||||
// decoded[i:j] contains decoded bytes that have not yet been passed on.
|
||||
i, j int
|
||||
readHeader bool
|
||||
}
|
||||
|
||||
// Reset discards any buffered data, resets all state, and switches the Snappy
|
||||
// reader to read from r. This permits reusing a Reader rather than allocating
|
||||
// a new one.
|
||||
func (r *Reader) Reset(reader io.Reader) {
|
||||
r.r = reader
|
||||
r.err = nil
|
||||
r.i = 0
|
||||
r.j = 0
|
||||
r.readHeader = false
|
||||
}
|
||||
|
||||
func (r *Reader) readFull(p []byte, allowEOF bool) (ok bool) {
|
||||
if _, r.err = io.ReadFull(r.r, p); r.err != nil {
|
||||
if r.err == io.ErrUnexpectedEOF || (r.err == io.EOF && !allowEOF) {
|
||||
r.err = ErrCorrupt
|
||||
}
|
||||
return false
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// Read satisfies the io.Reader interface.
|
||||
func (r *Reader) Read(p []byte) (int, error) {
|
||||
if r.err != nil {
|
||||
return 0, r.err
|
||||
}
|
||||
for {
|
||||
if r.i < r.j {
|
||||
n := copy(p, r.decoded[r.i:r.j])
|
||||
r.i += n
|
||||
return n, nil
|
||||
}
|
||||
if !r.readFull(r.buf[:4], true) {
|
||||
return 0, r.err
|
||||
}
|
||||
chunkType := r.buf[0]
|
||||
if !r.readHeader {
|
||||
if chunkType != chunkTypeStreamIdentifier {
|
||||
r.err = ErrCorrupt
|
||||
return 0, r.err
|
||||
}
|
||||
r.readHeader = true
|
||||
}
|
||||
chunkLen := int(r.buf[1]) | int(r.buf[2])<<8 | int(r.buf[3])<<16
|
||||
if chunkLen > len(r.buf) {
|
||||
r.err = ErrUnsupported
|
||||
return 0, r.err
|
||||
}
|
||||
|
||||
// The chunk types are specified at
|
||||
// https://github.com/google/snappy/blob/master/framing_format.txt
|
||||
switch chunkType {
|
||||
case chunkTypeCompressedData:
|
||||
// Section 4.2. Compressed data (chunk type 0x00).
|
||||
if chunkLen < checksumSize {
|
||||
r.err = ErrCorrupt
|
||||
return 0, r.err
|
||||
}
|
||||
buf := r.buf[:chunkLen]
|
||||
if !r.readFull(buf, false) {
|
||||
return 0, r.err
|
||||
}
|
||||
checksum := uint32(buf[0]) | uint32(buf[1])<<8 | uint32(buf[2])<<16 | uint32(buf[3])<<24
|
||||
buf = buf[checksumSize:]
|
||||
|
||||
n, err := DecodedLen(buf)
|
||||
if err != nil {
|
||||
r.err = err
|
||||
return 0, r.err
|
||||
}
|
||||
if n > len(r.decoded) {
|
||||
r.err = ErrCorrupt
|
||||
return 0, r.err
|
||||
}
|
||||
if _, err := Decode(r.decoded, buf); err != nil {
|
||||
r.err = err
|
||||
return 0, r.err
|
||||
}
|
||||
if crc(r.decoded[:n]) != checksum {
|
||||
r.err = ErrCorrupt
|
||||
return 0, r.err
|
||||
}
|
||||
r.i, r.j = 0, n
|
||||
continue
|
||||
|
||||
case chunkTypeUncompressedData:
|
||||
// Section 4.3. Uncompressed data (chunk type 0x01).
|
||||
if chunkLen < checksumSize {
|
||||
r.err = ErrCorrupt
|
||||
return 0, r.err
|
||||
}
|
||||
buf := r.buf[:checksumSize]
|
||||
if !r.readFull(buf, false) {
|
||||
return 0, r.err
|
||||
}
|
||||
checksum := uint32(buf[0]) | uint32(buf[1])<<8 | uint32(buf[2])<<16 | uint32(buf[3])<<24
|
||||
// Read directly into r.decoded instead of via r.buf.
|
||||
n := chunkLen - checksumSize
|
||||
if n > len(r.decoded) {
|
||||
r.err = ErrCorrupt
|
||||
return 0, r.err
|
||||
}
|
||||
if !r.readFull(r.decoded[:n], false) {
|
||||
return 0, r.err
|
||||
}
|
||||
if crc(r.decoded[:n]) != checksum {
|
||||
r.err = ErrCorrupt
|
||||
return 0, r.err
|
||||
}
|
||||
r.i, r.j = 0, n
|
||||
continue
|
||||
|
||||
case chunkTypeStreamIdentifier:
|
||||
// Section 4.1. Stream identifier (chunk type 0xff).
|
||||
if chunkLen != len(magicBody) {
|
||||
r.err = ErrCorrupt
|
||||
return 0, r.err
|
||||
}
|
||||
if !r.readFull(r.buf[:len(magicBody)], false) {
|
||||
return 0, r.err
|
||||
}
|
||||
for i := 0; i < len(magicBody); i++ {
|
||||
if r.buf[i] != magicBody[i] {
|
||||
r.err = ErrCorrupt
|
||||
return 0, r.err
|
||||
}
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
if chunkType <= 0x7f {
|
||||
// Section 4.5. Reserved unskippable chunks (chunk types 0x02-0x7f).
|
||||
r.err = ErrUnsupported
|
||||
return 0, r.err
|
||||
}
|
||||
// Section 4.4 Padding (chunk type 0xfe).
|
||||
// Section 4.6. Reserved skippable chunks (chunk types 0x80-0xfd).
|
||||
if !r.readFull(r.buf[:chunkLen], false) {
|
||||
return 0, r.err
|
||||
}
|
||||
}
|
||||
}
|
14
vendor/github.com/golang/snappy/decode_amd64.go
generated
vendored
14
vendor/github.com/golang/snappy/decode_amd64.go
generated
vendored
@ -1,14 +0,0 @@
|
||||
// Copyright 2016 The Snappy-Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build !appengine
|
||||
// +build gc
|
||||
// +build !noasm
|
||||
|
||||
package snappy
|
||||
|
||||
// decode has the same semantics as in decode_other.go.
|
||||
//
|
||||
//go:noescape
|
||||
func decode(dst, src []byte) int
|
490
vendor/github.com/golang/snappy/decode_amd64.s
generated
vendored
490
vendor/github.com/golang/snappy/decode_amd64.s
generated
vendored
@ -1,490 +0,0 @@
|
||||
// Copyright 2016 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build !appengine
|
||||
// +build gc
|
||||
// +build !noasm
|
||||
|
||||
#include "textflag.h"
|
||||
|
||||
// The asm code generally follows the pure Go code in decode_other.go, except
|
||||
// where marked with a "!!!".
|
||||
|
||||
// func decode(dst, src []byte) int
|
||||
//
|
||||
// All local variables fit into registers. The non-zero stack size is only to
|
||||
// spill registers and push args when issuing a CALL. The register allocation:
|
||||
// - AX scratch
|
||||
// - BX scratch
|
||||
// - CX length or x
|
||||
// - DX offset
|
||||
// - SI &src[s]
|
||||
// - DI &dst[d]
|
||||
// + R8 dst_base
|
||||
// + R9 dst_len
|
||||
// + R10 dst_base + dst_len
|
||||
// + R11 src_base
|
||||
// + R12 src_len
|
||||
// + R13 src_base + src_len
|
||||
// - R14 used by doCopy
|
||||
// - R15 used by doCopy
|
||||
//
|
||||
// The registers R8-R13 (marked with a "+") are set at the start of the
|
||||
// function, and after a CALL returns, and are not otherwise modified.
|
||||
//
|
||||
// The d variable is implicitly DI - R8, and len(dst)-d is R10 - DI.
|
||||
// The s variable is implicitly SI - R11, and len(src)-s is R13 - SI.
|
||||
TEXT ·decode(SB), NOSPLIT, $48-56
|
||||
// Initialize SI, DI and R8-R13.
|
||||
MOVQ dst_base+0(FP), R8
|
||||
MOVQ dst_len+8(FP), R9
|
||||
MOVQ R8, DI
|
||||
MOVQ R8, R10
|
||||
ADDQ R9, R10
|
||||
MOVQ src_base+24(FP), R11
|
||||
MOVQ src_len+32(FP), R12
|
||||
MOVQ R11, SI
|
||||
MOVQ R11, R13
|
||||
ADDQ R12, R13
|
||||
|
||||
loop:
|
||||
// for s < len(src)
|
||||
CMPQ SI, R13
|
||||
JEQ end
|
||||
|
||||
// CX = uint32(src[s])
|
||||
//
|
||||
// switch src[s] & 0x03
|
||||
MOVBLZX (SI), CX
|
||||
MOVL CX, BX
|
||||
ANDL $3, BX
|
||||
CMPL BX, $1
|
||||
JAE tagCopy
|
||||
|
||||
// ----------------------------------------
|
||||
// The code below handles literal tags.
|
||||
|
||||
// case tagLiteral:
|
||||
// x := uint32(src[s] >> 2)
|
||||
// switch
|
||||
SHRL $2, CX
|
||||
CMPL CX, $60
|
||||
JAE tagLit60Plus
|
||||
|
||||
// case x < 60:
|
||||
// s++
|
||||
INCQ SI
|
||||
|
||||
doLit:
|
||||
// This is the end of the inner "switch", when we have a literal tag.
|
||||
//
|
||||
// We assume that CX == x and x fits in a uint32, where x is the variable
|
||||
// used in the pure Go decode_other.go code.
|
||||
|
||||
// length = int(x) + 1
|
||||
//
|
||||
// Unlike the pure Go code, we don't need to check if length <= 0 because
|
||||
// CX can hold 64 bits, so the increment cannot overflow.
|
||||
INCQ CX
|
||||
|
||||
// Prepare to check if copying length bytes will run past the end of dst or
|
||||
// src.
|
||||
//
|
||||
// AX = len(dst) - d
|
||||
// BX = len(src) - s
|
||||
MOVQ R10, AX
|
||||
SUBQ DI, AX
|
||||
MOVQ R13, BX
|
||||
SUBQ SI, BX
|
||||
|
||||
// !!! Try a faster technique for short (16 or fewer bytes) copies.
|
||||
//
|
||||
// if length > 16 || len(dst)-d < 16 || len(src)-s < 16 {
|
||||
// goto callMemmove // Fall back on calling runtime·memmove.
|
||||
// }
|
||||
//
|
||||
// The C++ snappy code calls this TryFastAppend. It also checks len(src)-s
|
||||
// against 21 instead of 16, because it cannot assume that all of its input
|
||||
// is contiguous in memory and so it needs to leave enough source bytes to
|
||||
// read the next tag without refilling buffers, but Go's Decode assumes
|
||||
// contiguousness (the src argument is a []byte).
|
||||
CMPQ CX, $16
|
||||
JGT callMemmove
|
||||
CMPQ AX, $16
|
||||
JLT callMemmove
|
||||
CMPQ BX, $16
|
||||
JLT callMemmove
|
||||
|
||||
// !!! Implement the copy from src to dst as a 16-byte load and store.
|
||||
// (Decode's documentation says that dst and src must not overlap.)
|
||||
//
|
||||
// This always copies 16 bytes, instead of only length bytes, but that's
|
||||
// OK. If the input is a valid Snappy encoding then subsequent iterations
|
||||
// will fix up the overrun. Otherwise, Decode returns a nil []byte (and a
|
||||
// non-nil error), so the overrun will be ignored.
|
||||
//
|
||||
// Note that on amd64, it is legal and cheap to issue unaligned 8-byte or
|
||||
// 16-byte loads and stores. This technique probably wouldn't be as
|
||||
// effective on architectures that are fussier about alignment.
|
||||
MOVOU 0(SI), X0
|
||||
MOVOU X0, 0(DI)
|
||||
|
||||
// d += length
|
||||
// s += length
|
||||
ADDQ CX, DI
|
||||
ADDQ CX, SI
|
||||
JMP loop
|
||||
|
||||
callMemmove:
|
||||
// if length > len(dst)-d || length > len(src)-s { etc }
|
||||
CMPQ CX, AX
|
||||
JGT errCorrupt
|
||||
CMPQ CX, BX
|
||||
JGT errCorrupt
|
||||
|
||||
// copy(dst[d:], src[s:s+length])
|
||||
//
|
||||
// This means calling runtime·memmove(&dst[d], &src[s], length), so we push
|
||||
// DI, SI and CX as arguments. Coincidentally, we also need to spill those
|
||||
// three registers to the stack, to save local variables across the CALL.
|
||||
MOVQ DI, 0(SP)
|
||||
MOVQ SI, 8(SP)
|
||||
MOVQ CX, 16(SP)
|
||||
MOVQ DI, 24(SP)
|
||||
MOVQ SI, 32(SP)
|
||||
MOVQ CX, 40(SP)
|
||||
CALL runtime·memmove(SB)
|
||||
|
||||
// Restore local variables: unspill registers from the stack and
|
||||
// re-calculate R8-R13.
|
||||
MOVQ 24(SP), DI
|
||||
MOVQ 32(SP), SI
|
||||
MOVQ 40(SP), CX
|
||||
MOVQ dst_base+0(FP), R8
|
||||
MOVQ dst_len+8(FP), R9
|
||||
MOVQ R8, R10
|
||||
ADDQ R9, R10
|
||||
MOVQ src_base+24(FP), R11
|
||||
MOVQ src_len+32(FP), R12
|
||||
MOVQ R11, R13
|
||||
ADDQ R12, R13
|
||||
|
||||
// d += length
|
||||
// s += length
|
||||
ADDQ CX, DI
|
||||
ADDQ CX, SI
|
||||
JMP loop
|
||||
|
||||
tagLit60Plus:
|
||||
// !!! This fragment does the
|
||||
//
|
||||
// s += x - 58; if uint(s) > uint(len(src)) { etc }
|
||||
//
|
||||
// checks. In the asm version, we code it once instead of once per switch case.
|
||||
ADDQ CX, SI
|
||||
SUBQ $58, SI
|
||||
MOVQ SI, BX
|
||||
SUBQ R11, BX
|
||||
CMPQ BX, R12
|
||||
JA errCorrupt
|
||||
|
||||
// case x == 60:
|
||||
CMPL CX, $61
|
||||
JEQ tagLit61
|
||||
JA tagLit62Plus
|
||||
|
||||
// x = uint32(src[s-1])
|
||||
MOVBLZX -1(SI), CX
|
||||
JMP doLit
|
||||
|
||||
tagLit61:
|
||||
// case x == 61:
|
||||
// x = uint32(src[s-2]) | uint32(src[s-1])<<8
|
||||
MOVWLZX -2(SI), CX
|
||||
JMP doLit
|
||||
|
||||
tagLit62Plus:
|
||||
CMPL CX, $62
|
||||
JA tagLit63
|
||||
|
||||
// case x == 62:
|
||||
// x = uint32(src[s-3]) | uint32(src[s-2])<<8 | uint32(src[s-1])<<16
|
||||
MOVWLZX -3(SI), CX
|
||||
MOVBLZX -1(SI), BX
|
||||
SHLL $16, BX
|
||||
ORL BX, CX
|
||||
JMP doLit
|
||||
|
||||
tagLit63:
|
||||
// case x == 63:
|
||||
// x = uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24
|
||||
MOVL -4(SI), CX
|
||||
JMP doLit
|
||||
|
||||
// The code above handles literal tags.
|
||||
// ----------------------------------------
|
||||
// The code below handles copy tags.
|
||||
|
||||
tagCopy4:
|
||||
// case tagCopy4:
|
||||
// s += 5
|
||||
ADDQ $5, SI
|
||||
|
||||
// if uint(s) > uint(len(src)) { etc }
|
||||
MOVQ SI, BX
|
||||
SUBQ R11, BX
|
||||
CMPQ BX, R12
|
||||
JA errCorrupt
|
||||
|
||||
// length = 1 + int(src[s-5])>>2
|
||||
SHRQ $2, CX
|
||||
INCQ CX
|
||||
|
||||
// offset = int(uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24)
|
||||
MOVLQZX -4(SI), DX
|
||||
JMP doCopy
|
||||
|
||||
tagCopy2:
|
||||
// case tagCopy2:
|
||||
// s += 3
|
||||
ADDQ $3, SI
|
||||
|
||||
// if uint(s) > uint(len(src)) { etc }
|
||||
MOVQ SI, BX
|
||||
SUBQ R11, BX
|
||||
CMPQ BX, R12
|
||||
JA errCorrupt
|
||||
|
||||
// length = 1 + int(src[s-3])>>2
|
||||
SHRQ $2, CX
|
||||
INCQ CX
|
||||
|
||||
// offset = int(uint32(src[s-2]) | uint32(src[s-1])<<8)
|
||||
MOVWQZX -2(SI), DX
|
||||
JMP doCopy
|
||||
|
||||
tagCopy:
|
||||
// We have a copy tag. We assume that:
|
||||
// - BX == src[s] & 0x03
|
||||
// - CX == src[s]
|
||||
CMPQ BX, $2
|
||||
JEQ tagCopy2
|
||||
JA tagCopy4
|
||||
|
||||
// case tagCopy1:
|
||||
// s += 2
|
||||
ADDQ $2, SI
|
||||
|
||||
// if uint(s) > uint(len(src)) { etc }
|
||||
MOVQ SI, BX
|
||||
SUBQ R11, BX
|
||||
CMPQ BX, R12
|
||||
JA errCorrupt
|
||||
|
||||
// offset = int(uint32(src[s-2])&0xe0<<3 | uint32(src[s-1]))
|
||||
MOVQ CX, DX
|
||||
ANDQ $0xe0, DX
|
||||
SHLQ $3, DX
|
||||
MOVBQZX -1(SI), BX
|
||||
ORQ BX, DX
|
||||
|
||||
// length = 4 + int(src[s-2])>>2&0x7
|
||||
SHRQ $2, CX
|
||||
ANDQ $7, CX
|
||||
ADDQ $4, CX
|
||||
|
||||
doCopy:
|
||||
// This is the end of the outer "switch", when we have a copy tag.
|
||||
//
|
||||
// We assume that:
|
||||
// - CX == length && CX > 0
|
||||
// - DX == offset
|
||||
|
||||
// if offset <= 0 { etc }
|
||||
CMPQ DX, $0
|
||||
JLE errCorrupt
|
||||
|
||||
// if d < offset { etc }
|
||||
MOVQ DI, BX
|
||||
SUBQ R8, BX
|
||||
CMPQ BX, DX
|
||||
JLT errCorrupt
|
||||
|
||||
// if length > len(dst)-d { etc }
|
||||
MOVQ R10, BX
|
||||
SUBQ DI, BX
|
||||
CMPQ CX, BX
|
||||
JGT errCorrupt
|
||||
|
||||
// forwardCopy(dst[d:d+length], dst[d-offset:]); d += length
|
||||
//
|
||||
// Set:
|
||||
// - R14 = len(dst)-d
|
||||
// - R15 = &dst[d-offset]
|
||||
MOVQ R10, R14
|
||||
SUBQ DI, R14
|
||||
MOVQ DI, R15
|
||||
SUBQ DX, R15
|
||||
|
||||
// !!! Try a faster technique for short (16 or fewer bytes) forward copies.
|
||||
//
|
||||
// First, try using two 8-byte load/stores, similar to the doLit technique
|
||||
// above. Even if dst[d:d+length] and dst[d-offset:] can overlap, this is
|
||||
// still OK if offset >= 8. Note that this has to be two 8-byte load/stores
|
||||
// and not one 16-byte load/store, and the first store has to be before the
|
||||
// second load, due to the overlap if offset is in the range [8, 16).
|
||||
//
|
||||
// if length > 16 || offset < 8 || len(dst)-d < 16 {
|
||||
// goto slowForwardCopy
|
||||
// }
|
||||
// copy 16 bytes
|
||||
// d += length
|
||||
CMPQ CX, $16
|
||||
JGT slowForwardCopy
|
||||
CMPQ DX, $8
|
||||
JLT slowForwardCopy
|
||||
CMPQ R14, $16
|
||||
JLT slowForwardCopy
|
||||
MOVQ 0(R15), AX
|
||||
MOVQ AX, 0(DI)
|
||||
MOVQ 8(R15), BX
|
||||
MOVQ BX, 8(DI)
|
||||
ADDQ CX, DI
|
||||
JMP loop
|
||||
|
||||
slowForwardCopy:
|
||||
// !!! If the forward copy is longer than 16 bytes, or if offset < 8, we
|
||||
// can still try 8-byte load stores, provided we can overrun up to 10 extra
|
||||
// bytes. As above, the overrun will be fixed up by subsequent iterations
|
||||
// of the outermost loop.
|
||||
//
|
||||
// The C++ snappy code calls this technique IncrementalCopyFastPath. Its
|
||||
// commentary says:
|
||||
//
|
||||
// ----
|
||||
//
|
||||
// The main part of this loop is a simple copy of eight bytes at a time
|
||||
// until we've copied (at least) the requested amount of bytes. However,
|
||||
// if d and d-offset are less than eight bytes apart (indicating a
|
||||
// repeating pattern of length < 8), we first need to expand the pattern in
|
||||
// order to get the correct results. For instance, if the buffer looks like
|
||||
// this, with the eight-byte <d-offset> and <d> patterns marked as
|
||||
// intervals:
|
||||
//
|
||||
// abxxxxxxxxxxxx
|
||||
// [------] d-offset
|
||||
// [------] d
|
||||
//
|
||||
// a single eight-byte copy from <d-offset> to <d> will repeat the pattern
|
||||
// once, after which we can move <d> two bytes without moving <d-offset>:
|
||||
//
|
||||
// ababxxxxxxxxxx
|
||||
// [------] d-offset
|
||||
// [------] d
|
||||
//
|
||||
// and repeat the exercise until the two no longer overlap.
|
||||
//
|
||||
// This allows us to do very well in the special case of one single byte
|
||||
// repeated many times, without taking a big hit for more general cases.
|
||||
//
|
||||
// The worst case of extra writing past the end of the match occurs when
|
||||
// offset == 1 and length == 1; the last copy will read from byte positions
|
||||
// [0..7] and write to [4..11], whereas it was only supposed to write to
|
||||
// position 1. Thus, ten excess bytes.
|
||||
//
|
||||
// ----
|
||||
//
|
||||
// That "10 byte overrun" worst case is confirmed by Go's
|
||||
// TestSlowForwardCopyOverrun, which also tests the fixUpSlowForwardCopy
|
||||
// and finishSlowForwardCopy algorithm.
|
||||
//
|
||||
// if length > len(dst)-d-10 {
|
||||
// goto verySlowForwardCopy
|
||||
// }
|
||||
SUBQ $10, R14
|
||||
CMPQ CX, R14
|
||||
JGT verySlowForwardCopy
|
||||
|
||||
makeOffsetAtLeast8:
|
||||
// !!! As above, expand the pattern so that offset >= 8 and we can use
|
||||
// 8-byte load/stores.
|
||||
//
|
||||
// for offset < 8 {
|
||||
// copy 8 bytes from dst[d-offset:] to dst[d:]
|
||||
// length -= offset
|
||||
// d += offset
|
||||
// offset += offset
|
||||
// // The two previous lines together means that d-offset, and therefore
|
||||
// // R15, is unchanged.
|
||||
// }
|
||||
CMPQ DX, $8
|
||||
JGE fixUpSlowForwardCopy
|
||||
MOVQ (R15), BX
|
||||
MOVQ BX, (DI)
|
||||
SUBQ DX, CX
|
||||
ADDQ DX, DI
|
||||
ADDQ DX, DX
|
||||
JMP makeOffsetAtLeast8
|
||||
|
||||
fixUpSlowForwardCopy:
|
||||
// !!! Add length (which might be negative now) to d (implied by DI being
|
||||
// &dst[d]) so that d ends up at the right place when we jump back to the
|
||||
// top of the loop. Before we do that, though, we save DI to AX so that, if
|
||||
// length is positive, copying the remaining length bytes will write to the
|
||||
// right place.
|
||||
MOVQ DI, AX
|
||||
ADDQ CX, DI
|
||||
|
||||
finishSlowForwardCopy:
|
||||
// !!! Repeat 8-byte load/stores until length <= 0. Ending with a negative
|
||||
// length means that we overrun, but as above, that will be fixed up by
|
||||
// subsequent iterations of the outermost loop.
|
||||
CMPQ CX, $0
|
||||
JLE loop
|
||||
MOVQ (R15), BX
|
||||
MOVQ BX, (AX)
|
||||
ADDQ $8, R15
|
||||
ADDQ $8, AX
|
||||
SUBQ $8, CX
|
||||
JMP finishSlowForwardCopy
|
||||
|
||||
verySlowForwardCopy:
|
||||
// verySlowForwardCopy is a simple implementation of forward copy. In C
|
||||
// parlance, this is a do/while loop instead of a while loop, since we know
|
||||
// that length > 0. In Go syntax:
|
||||
//
|
||||
// for {
|
||||
// dst[d] = dst[d - offset]
|
||||
// d++
|
||||
// length--
|
||||
// if length == 0 {
|
||||
// break
|
||||
// }
|
||||
// }
|
||||
MOVB (R15), BX
|
||||
MOVB BX, (DI)
|
||||
INCQ R15
|
||||
INCQ DI
|
||||
DECQ CX
|
||||
JNZ verySlowForwardCopy
|
||||
JMP loop
|
||||
|
||||
// The code above handles copy tags.
|
||||
// ----------------------------------------
|
||||
|
||||
end:
|
||||
// This is the end of the "for s < len(src)".
|
||||
//
|
||||
// if d != len(dst) { etc }
|
||||
CMPQ DI, R10
|
||||
JNE errCorrupt
|
||||
|
||||
// return 0
|
||||
MOVQ $0, ret+48(FP)
|
||||
RET
|
||||
|
||||
errCorrupt:
|
||||
// return decodeErrCodeCorrupt
|
||||
MOVQ $1, ret+48(FP)
|
||||
RET
|
101
vendor/github.com/golang/snappy/decode_other.go
generated
vendored
101
vendor/github.com/golang/snappy/decode_other.go
generated
vendored
@ -1,101 +0,0 @@
|
||||
// Copyright 2016 The Snappy-Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build !amd64 appengine !gc noasm
|
||||
|
||||
package snappy
|
||||
|
||||
// decode writes the decoding of src to dst. It assumes that the varint-encoded
|
||||
// length of the decompressed bytes has already been read, and that len(dst)
|
||||
// equals that length.
|
||||
//
|
||||
// It returns 0 on success or a decodeErrCodeXxx error code on failure.
|
||||
func decode(dst, src []byte) int {
|
||||
var d, s, offset, length int
|
||||
for s < len(src) {
|
||||
switch src[s] & 0x03 {
|
||||
case tagLiteral:
|
||||
x := uint32(src[s] >> 2)
|
||||
switch {
|
||||
case x < 60:
|
||||
s++
|
||||
case x == 60:
|
||||
s += 2
|
||||
if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
|
||||
return decodeErrCodeCorrupt
|
||||
}
|
||||
x = uint32(src[s-1])
|
||||
case x == 61:
|
||||
s += 3
|
||||
if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
|
||||
return decodeErrCodeCorrupt
|
||||
}
|
||||
x = uint32(src[s-2]) | uint32(src[s-1])<<8
|
||||
case x == 62:
|
||||
s += 4
|
||||
if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
|
||||
return decodeErrCodeCorrupt
|
||||
}
|
||||
x = uint32(src[s-3]) | uint32(src[s-2])<<8 | uint32(src[s-1])<<16
|
||||
case x == 63:
|
||||
s += 5
|
||||
if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
|
||||
return decodeErrCodeCorrupt
|
||||
}
|
||||
x = uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24
|
||||
}
|
||||
length = int(x) + 1
|
||||
if length <= 0 {
|
||||
return decodeErrCodeUnsupportedLiteralLength
|
||||
}
|
||||
if length > len(dst)-d || length > len(src)-s {
|
||||
return decodeErrCodeCorrupt
|
||||
}
|
||||
copy(dst[d:], src[s:s+length])
|
||||
d += length
|
||||
s += length
|
||||
continue
|
||||
|
||||
case tagCopy1:
|
||||
s += 2
|
||||
if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
|
||||
return decodeErrCodeCorrupt
|
||||
}
|
||||
length = 4 + int(src[s-2])>>2&0x7
|
||||
offset = int(uint32(src[s-2])&0xe0<<3 | uint32(src[s-1]))
|
||||
|
||||
case tagCopy2:
|
||||
s += 3
|
||||
if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
|
||||
return decodeErrCodeCorrupt
|
||||
}
|
||||
length = 1 + int(src[s-3])>>2
|
||||
offset = int(uint32(src[s-2]) | uint32(src[s-1])<<8)
|
||||
|
||||
case tagCopy4:
|
||||
s += 5
|
||||
if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
|
||||
return decodeErrCodeCorrupt
|
||||
}
|
||||
length = 1 + int(src[s-5])>>2
|
||||
offset = int(uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24)
|
||||
}
|
||||
|
||||
if offset <= 0 || d < offset || length > len(dst)-d {
|
||||
return decodeErrCodeCorrupt
|
||||
}
|
||||
// Copy from an earlier sub-slice of dst to a later sub-slice. Unlike
|
||||
// the built-in copy function, this byte-by-byte copy always runs
|
||||
// forwards, even if the slices overlap. Conceptually, this is:
|
||||
//
|
||||
// d += forwardCopy(dst[d:d+length], dst[d-offset:])
|
||||
for end := d + length; d != end; d++ {
|
||||
dst[d] = dst[d-offset]
|
||||
}
|
||||
}
|
||||
if d != len(dst) {
|
||||
return decodeErrCodeCorrupt
|
||||
}
|
||||
return 0
|
||||
}
|
Some files were not shown because too many files have changed in this diff Show More
Loading…
Reference in New Issue
Block a user