Feat: finish multi interface parser and make the cli app work

cmd/parse/main.go

@@ -11,7 +11,7 @@ import (
 )
 
 func main() {
-	eth0 := &iface.NetworkInterface{}
+	ifaces := iface.NewMultiParser()
 	switch {
 	case len(os.Args) < 2:
 		buf := &bytes.Buffer{}
@@ -31,7 +31,7 @@ func main() {
 				break
 			}
 		}
-		n, err := eth0.Write(buf.Bytes())
+		n, err := ifaces.Write(buf.Bytes())
 		if err != nil {
 			panic(err)
 		}
@@ -43,7 +43,7 @@ func main() {
 		if err != nil {
 			panic(err)
 		}
-		n, err := eth0.Write(dat)
+		n, err := ifaces.Write(dat)
 		if err != nil {
 			panic(err)
 		}
@@ -51,12 +51,22 @@ func main() {
 			panic("short write")
 		}
 	}
-	dat, err := json.MarshalIndent(eth0, "", "\t")
+	imap, err := ifaces.Parse()
 	if err != nil {
-		panic(err)
-	}
-	if err = eth0.Validate(); err != nil {
 		println(err.Error())
+		return
 	}
+	for _, netif := range imap {
+		if netif == nil {
+			continue
+		}
+		if err = netif.Validate(); err != nil {
+			println(netif.Name + " skip due to error: " + err.Error())
+			delete(imap, netif.Name)
+			continue
+		}
+	}
+
+	dat, err := json.MarshalIndent(imap, "", "\t")
 	_, _ = os.Stdout.Write(dat)
 }

go.mod

@@ -5,7 +5,4 @@ go 1.21.4
 require (
 	git.tcp.direct/kayos/common v0.9.6
 	github.com/davecgh/go-spew v1.1.1
-	github.com/hashicorp/go-multierror v1.1.1
 )
-
-require github.com/hashicorp/errwrap v1.0.0 // indirect

go.sum

@@ -2,7 +2,3 @@ git.tcp.direct/kayos/common v0.9.6 h1:EITtktxZF/zkzqAhZZxvm6cZpFYoZ0P/gLB9RPatKU
 git.tcp.direct/kayos/common v0.9.6/go.mod h1:8y9b+PN1+ZVaQ/VugD9dkKe+uqhE8jH7a64RyF7h2rM=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA=
-github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
-github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
-github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=

ifaces.go

@@ -2,13 +2,15 @@ package iface
 
 import (
 	"bufio"
+	"fmt"
 	"strings"
-
-	"github.com/hashicorp/go-multierror"
+	"sync"
 
 	"git.tcp.direct/kayos/common/pool"
 )
 
+type Interfaces map[string]*NetworkInterface
+
 type poolGroup struct {
 	Buffers pool.BufferFactory
 	Strs    pool.StringFactory
@@ -20,22 +22,28 @@ type MultiParser struct {
 	Interfaces map[string]*NetworkInterface
 	Errs       []error
 	buf        []byte
+	mu         *sync.Mutex
 }
 
 func NewMultiParser() *MultiParser {
 	return &MultiParser{
-		Interfaces: make(map[string]*NetworkInterface),
+		Interfaces: make(Interfaces),
 		Errs:       make([]error, 0),
 		buf:        make([]byte, 0),
+		mu:         &sync.Mutex{},
 	}
 }
 
 func (p *MultiParser) Write(data []byte) (int, error) {
+	p.mu.Lock()
 	p.buf = append(p.buf, data...)
+	p.mu.Unlock()
 	return len(data), nil
 }
 
-func (p *MultiParser) Parse() error {
+func (p *MultiParser) Parse() (Interfaces, error) {
+	p.mu.Lock()
+	defer p.mu.Unlock()
 	scanner := bufio.NewScanner(strings.NewReader(string(p.buf)))
 
 	index := 0
@@ -92,11 +100,16 @@ func (p *MultiParser) Parse() error {
 	if len(buf.Bytes()) > 0 {
 		flush("unknown")
 	}
-	me := &multierror.Error{}
+	var multiErr error
 	for _, err := range p.Errs {
-		if err != nil {
-			me = multierror.Append(me, err)
+		switch {
+		case err == nil:
+			continue
+		case multiErr == nil:
+			multiErr = err
+		default:
+			multiErr = fmt.Errorf("%w, %w", multiErr, err)
 		}
 	}
-	return me.ErrorOrNil()
+	return p.Interfaces, multiErr
 }

netif.go

@@ -14,13 +14,13 @@ import (
 
 type Hooks struct {
 	// PreUp of the interface
-	PreUp []string
+	PreUp []string `json:"pre_up,omitempty"`
 	// PostUp of the interface
-	PostUp []string
+	PostUp []string `json:"post_up,omitempty"`
 	// PreDown of the interface
-	PreDown []string
+	PreDown []string `json:"pre_down,omitempty"`
 	// PostDown of the interface
-	PostDown []string
+	PostDown []string `json:"post_down,omitempty"`
 }
 
 type AddressConfig uint8