mirror of
https://github.com/etcd-io/etcd.git
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f1ed69e883
Build tags are not compatible with block comments. Also adds copyright header to a few places it was missing.
113 lines
2.6 KiB
Go
113 lines
2.6 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"errors"
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"flag"
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"fmt"
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"log"
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"path"
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etcdserverpb "github.com/coreos/etcd/etcdserver/etcdserverpb"
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"github.com/coreos/etcd/migrate"
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"github.com/coreos/etcd/pkg/types"
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raftpb "github.com/coreos/etcd/raft/raftpb"
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"github.com/coreos/etcd/wal"
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"github.com/coreos/etcd/wal/walpb"
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)
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func walDir5(dataDir string) string {
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return path.Join(dataDir, "wal")
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}
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func logFile4(dataDir string) string {
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return path.Join(dataDir, "log")
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}
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func main() {
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version := flag.Int("version", 5, "4 or 5")
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from := flag.String("data-dir", "", "")
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flag.Parse()
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if *from == "" {
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log.Fatal("Must provide -data-dir flag")
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}
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var ents []raftpb.Entry
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var err error
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switch *version {
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case 4:
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ents, err = dump4(*from)
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case 5:
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ents, err = dump5(*from)
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default:
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err = errors.New("value of -version flag must be 4 or 5")
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}
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if err != nil {
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log.Fatalf("Failed decoding log: %v", err)
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}
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for _, e := range ents {
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msg := fmt.Sprintf("%2d %5d: ", e.Term, e.Index)
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switch e.Type {
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case raftpb.EntryNormal:
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msg = fmt.Sprintf("%s norm", msg)
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var r etcdserverpb.Request
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if err := r.Unmarshal(e.Data); err != nil {
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msg = fmt.Sprintf("%s ???", msg)
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} else {
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msg = fmt.Sprintf("%s %s %s %s", msg, r.Method, r.Path, r.Val)
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}
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case raftpb.EntryConfChange:
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msg = fmt.Sprintf("%s conf", msg)
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var r raftpb.ConfChange
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if err := r.Unmarshal(e.Data); err != nil {
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msg = fmt.Sprintf("%s ???", msg)
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} else {
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msg = fmt.Sprintf("%s %s %s %s", msg, r.Type, types.ID(r.NodeID), r.Context)
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}
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}
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fmt.Println(msg)
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}
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}
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func dump4(dataDir string) ([]raftpb.Entry, error) {
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lf4 := logFile4(dataDir)
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ents, err := migrate.DecodeLog4FromFile(lf4)
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if err != nil {
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return nil, err
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}
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return migrate.Entries4To2(ents)
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}
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func dump5(dataDir string) ([]raftpb.Entry, error) {
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wd5 := walDir5(dataDir)
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if !wal.Exist(wd5) {
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return nil, fmt.Errorf("No wal exists at %s", wd5)
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}
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w, err := wal.Open(wd5, walpb.Snapshot{})
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if err != nil {
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return nil, err
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}
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defer w.Close()
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_, _, ents, err := w.ReadAll()
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return ents, err
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}
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