62 lines
1.3 KiB
Go
62 lines
1.3 KiB
Go
package main
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import (
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"fmt"
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"os"
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log "github.com/rs/zerolog/log"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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"git.tcp.direct/Mirrors/bitcask-mirror"
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)
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var rangeCmd = &cobra.Command{
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Use: "range <start> <end>",
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Aliases: []string{},
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Short: "Perform a range scan for keys from a start to end key",
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Long: `This performa a range scan for keys starting with the given start
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key and ending with the end key. This uses a Trie to search for matching keys
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within the range and returns all matched keys.`,
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Args: cobra.ExactArgs(2),
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Run: func(cmd *cobra.Command, args []string) {
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path := viper.GetString("path")
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start := args[0]
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end := args[1]
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os.Exit(_range(path, start, end))
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},
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}
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func init() {
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RootCmd.AddCommand(rangeCmd)
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}
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func _range(path, start, end string) int {
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db, err := bitcask.Open(path)
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if err != nil {
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log.Error().Err(err).Msg("error opening database")
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return 1
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}
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defer db.Close()
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err = db.Range([]byte(start), []byte(end), func(key []byte) error {
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value, err := db.Get(key)
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if err != nil {
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log.Error().Err(err).Msg("error reading key")
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return err
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}
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fmt.Printf("%s\n", string(value))
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log.Debug().Bytes("key", key).Bytes("value", value).Msg("key/value")
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return nil
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})
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if err != nil {
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log.Error().Err(err).Msg("error ranging over keys")
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return 1
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}
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return 0
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}
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