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77 lines
1.7 KiB
77 lines
1.7 KiB
/*
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json2wal converts JSON file to binary WAL file.
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Usage:
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json2wal <path-to-JSON> <path-to-wal>
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*/
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package main
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import (
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"bufio"
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"fmt"
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"io"
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"os"
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"strings"
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amino "github.com/tendermint/go-amino"
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cs "github.com/tendermint/tendermint/consensus"
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"github.com/tendermint/tendermint/types"
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)
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var cdc = amino.NewCodec()
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func init() {
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cs.RegisterConsensusMessages(cdc)
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cs.RegisterWALMessages(cdc)
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types.RegisterBlockAmino(cdc)
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}
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func main() {
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if len(os.Args) < 3 {
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fmt.Fprintln(os.Stderr, "missing arguments: Usage:json2wal <path-to-JSON> <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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walFile, err := os.OpenFile(os.Args[2], os.O_EXCL|os.O_WRONLY|os.O_CREATE, 0666)
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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 walFile.Close()
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// the length of tendermint/wal/MsgInfo in the wal.json may exceed the defaultBufSize(4096) of bufio
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// because of the byte array in BlockPart
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// leading to unmarshal error: unexpected end of JSON input
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br := bufio.NewReaderSize(f, 2*types.BlockPartSizeBytes)
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dec := cs.NewWALEncoder(walFile)
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for {
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msgJSON, _, err := br.ReadLine()
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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 read file: %v", err))
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}
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// ignore the ENDHEIGHT in json.File
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if strings.HasPrefix(string(msgJSON), "ENDHEIGHT") {
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continue
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}
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var msg cs.TimedWALMessage
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err = cdc.UnmarshalJSON(msgJSON, &msg)
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if err != nil {
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panic(fmt.Errorf("failed to unmarshal json: %v", err))
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}
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err = dec.Encode(&msg)
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if err != nil {
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panic(fmt.Errorf("failed to encode msg: %v", err))
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}
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}
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}
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