binary format for WAL

scripts/wal2json/main.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+
+	cs "github.com/tendermint/tendermint/consensus"
+)
+
+func main() {
+	f, err := os.Open(os.Args[1])
+	if err != nil {
+		panic(fmt.Errorf("failed to open WAL file: %v", err))
+	}
+	defer f.Close()
+
+	dec := cs.NewWALDecoder(f)
+	for {
+		msg, err := dec.Decode()
+		if err == io.EOF {
+			break
+		} else if err != nil {
+			panic(fmt.Errorf("failed to decode msg: %v", err))
+		}
+
+		json, err := json.Marshal(msg)
+		if err != nil {
+			panic(fmt.Errorf("failed to marshal msg: %v", err))
+		}
+
+		os.Stdout.Write(json)
+		os.Stdout.Write([]byte("\n"))
+	}
+}