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58 lines
1.1 KiB
58 lines
1.1 KiB
/*
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wal2json converts binary WAL file to JSON.
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Usage:
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wal2json <path-to-wal>
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*/
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package main
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import (
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"encoding/json"
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"fmt"
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"io"
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"os"
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cs "github.com/tendermint/tendermint/consensus"
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)
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func main() {
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if len(os.Args) < 2 {
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fmt.Println("missing one argument: <path-to-wal>")
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os.Exit(1)
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}
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f, err := os.Open(os.Args[1])
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if err != nil {
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panic(fmt.Errorf("failed to open WAL file: %v", err))
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}
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defer f.Close()
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dec := cs.NewWALDecoder(f)
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for {
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msg, err := dec.Decode()
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if err == io.EOF {
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break
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} else if err != nil {
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panic(fmt.Errorf("failed to decode msg: %v", err))
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}
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json, err := json.Marshal(msg)
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if err != nil {
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panic(fmt.Errorf("failed to marshal msg: %v", err))
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}
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_, err = os.Stdout.Write(json)
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if err == nil {
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_, err = os.Stdout.Write([]byte("\n"))
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}
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if err == nil {
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if end, ok := msg.Msg.(cs.EndHeightMessage); ok {
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_, err = os.Stdout.Write([]byte(fmt.Sprintf("ENDHEIGHT %d\n", end.Height))) // nolint: errcheck, gas
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}
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}
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if err != nil {
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fmt.Println("Failed to write message", err)
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os.Exit(1)
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}
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}
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}
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