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This mode allows to look at RAW protos for all entries in WAL logs in the given directory. Signed-off-by: Piotr Tabor <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| // Copyright 2022 The etcd Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "io" | ||
| "io/ioutil" | ||
| "os" | ||
| "path/filepath" | ||
|
|
||
| "go.uber.org/zap" | ||
|
|
||
| "go.etcd.io/etcd/api/v3/etcdserverpb" | ||
| "go.etcd.io/etcd/client/pkg/v3/fileutil" | ||
| "go.etcd.io/etcd/pkg/v3/pbutil" | ||
| "go.etcd.io/etcd/server/v3/storage/wal" | ||
| "go.etcd.io/etcd/server/v3/storage/wal/walpb" | ||
| "go.etcd.io/raft/v3/raftpb" | ||
| ) | ||
|
|
||
| func readRaw(lg *zap.Logger, fromIndex *uint64, waldir string, out io.Writer) { | ||
| var walReaders []fileutil.FileReader | ||
| files, err := ioutil.ReadDir(waldir) | ||
| if err != nil { | ||
| lg.Fatal("Failed to read directory.", zap.String("directory", waldir), zap.Error(err)) | ||
| } | ||
| for _, finfo := range files { | ||
| if filepath.Ext(finfo.Name()) != ".wal" { | ||
| lg.Warn("Ignoring not .wal file", zap.String("filename", finfo.Name())) | ||
| } | ||
| f, err := os.Open(filepath.Join(waldir, finfo.Name())) | ||
| if err != nil { | ||
| lg.Fatal("Failed to read file", zap.String("filename", finfo.Name()), zap.Error(err)) | ||
| } | ||
| walReaders = append(walReaders, fileutil.NewFileReader(f)) | ||
| } | ||
| decoder := wal.NewDecoderAdvanced(true, walReaders...) | ||
| // The variable is used to not pollute log with multiple continuous crc errors. | ||
| crcDesync := false | ||
| for { | ||
| rec := walpb.Record{} | ||
| err := decoder.Decode(&rec) | ||
| if err == nil || errors.Is(err, walpb.ErrCRCMismatch) { | ||
| if err != nil && !crcDesync { | ||
| lg.Warn("Reading entry failed with CRC error", zap.Error(err)) | ||
| crcDesync = true | ||
| } | ||
| printRec(lg, &rec, fromIndex, out) | ||
| if rec.Type == wal.CrcType { | ||
| decoder.UpdateCRC(rec.Crc) | ||
| crcDesync = false | ||
| } | ||
| continue | ||
| } | ||
| if errors.Is(err, io.EOF) { | ||
| lg.Info("EOF: All entries were processed") | ||
| break | ||
| } else { | ||
| lg.Error("Reading failed", zap.Error(err)) | ||
| break | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func printRec(lg *zap.Logger, rec *walpb.Record, fromIndex *uint64, out io.Writer) { | ||
| switch rec.Type { | ||
| case wal.MetadataType: | ||
| var metadata etcdserverpb.Metadata | ||
| pbutil.MustUnmarshal(&metadata, rec.Data) | ||
| fmt.Fprintf(out, "Metadata: %s\n", metadata.String()) | ||
| case wal.CrcType: | ||
| fmt.Fprintf(out, "CRC: %d\n", rec.Crc) | ||
| case wal.EntryType: | ||
| e := wal.MustUnmarshalEntry(rec.Data) | ||
| if fromIndex == nil || e.Index >= *fromIndex { | ||
| fmt.Fprintf(out, "Entry: %s\n", e.String()) | ||
| } | ||
| case wal.SnapshotType: | ||
| var snap walpb.Snapshot | ||
| pbutil.MustUnmarshal(&snap, rec.Data) | ||
| if fromIndex == nil || snap.Index >= *fromIndex { | ||
| fmt.Fprintf(out, "Snapshot: %s\n", snap.String()) | ||
| } | ||
| case wal.StateType: | ||
| var state raftpb.HardState | ||
| pbutil.MustUnmarshal(&state, rec.Data) | ||
| if fromIndex == nil || state.Commit >= *fromIndex { | ||
| fmt.Fprintf(out, "HardState: %s\n", state.String()) | ||
| } | ||
| default: | ||
| lg.Error("Unexpected WAL log type", zap.Int64("type", rec.Type)) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
| "go.uber.org/zap/zaptest" | ||
| ) | ||
|
|
||
| func Test_readRaw(t *testing.T) { | ||
| path := t.TempDir() | ||
| mustCreateWalLog(t, path) | ||
| var out bytes.Buffer | ||
| readRaw(zaptest.NewLogger(t), nil, walDir(path), &out) | ||
| assert.Equal(t, | ||
| `CRC: 0 | ||
| Metadata: | ||
| Snapshot: | ||
| Entry: Term:1 Index:1 Type:EntryConfChange Data:"\010\001\020\000\030\002\"\000" | ||
| Entry: Term:2 Index:2 Type:EntryConfChange Data:"\010\002\020\001\030\002\"\000" | ||
| Entry: Term:2 Index:3 Type:EntryConfChange Data:"\010\003\020\002\030\002\"\000" | ||
| Entry: Term:2 Index:4 Type:EntryConfChange Data:"\010\004\020\003\030\003\"\000" | ||
| Entry: Term:3 Index:5 Data:"\010\000\022\000\032\006/path0\"\030{\"hey\":\"ho\",\"hi\":[\"yo\"]}(\0012\0008\000@\000H\tP\000X\001`+"`"+`\000h\000p\000x\001\200\001\000\210\001\000" | ||
| Entry: Term:3 Index:6 Data:"\010\001\022\004QGET\032\006/path1\"\023{\"0\":\"1\",\"2\":[\"3\"]}(\0002\0008\000@\000H\tP\000X\001`+"`"+`\000h\000p\000x\001\200\001\000\210\001\000" | ||
| Entry: Term:3 Index:7 Data:"\010\002\022\004SYNC\032\006/path2\"\023{\"0\":\"1\",\"2\":[\"3\"]}(\0002\0008\000@\000H\002P\000X\001`+"`"+`\000h\000p\000x\001\200\001\000\210\001\000" | ||
| Entry: Term:3 Index:8 Data:"\010\003\022\006DELETE\032\006/path3\"\030{\"hey\":\"ho\",\"hi\":[\"yo\"]}(\0002\0008\000@\001H\002P\000X\001`+"`"+`\000h\000p\000x\001\200\001\000\210\001\000" | ||
| Entry: Term:3 Index:9 Data:"\010\004\022\006RANDOM\032\246\001/path4/superlong/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path/path\"\030{\"hey\":\"ho\",\"hi\":[\"yo\"]}(\0002\0008\000@\000H\002P\000X\001`+"`"+`\000h\000p\000x\001\200\001\000\210\001\000" | ||
| Entry: Term:4 Index:10 Data:"\010\005\032\025\n\0011\022\002hi\030\006 \001(\001X\240\234\001h\240\234\001" | ||
| Entry: Term:5 Index:11 Data:"\010\006\"\020\n\004foo1\022\004bar1\030\0010\001" | ||
| Entry: Term:6 Index:12 Data:"\010\007*\010\n\0010\022\0019\030\001" | ||
| Entry: Term:7 Index:13 Data:"\010\0102\024\022\010\032\006\n\001a\022\001b\032\010\032\006\n\001a\022\001b" | ||
| Entry: Term:8 Index:14 Data:"\010\t:\002\020\001" | ||
| Entry: Term:9 Index:15 Data:"\010\nB\004\010\001\020\001" | ||
| Entry: Term:10 Index:16 Data:"\010\013J\002\010\002" | ||
| Entry: Term:11 Index:17 Data:"\010\014R\006\010\003\020\004\030\005" | ||
| Entry: Term:12 Index:18 Data:"\010\r\302>\000" | ||
| Entry: Term:13 Index:19 Data:"\010\016\232?\000" | ||
| Entry: Term:14 Index:20 Data:"\010\017\242?\031\n\006myname\022\010password\032\005token" | ||
| Entry: Term:15 Index:21 Data:"\010\020\342D\020\n\005name1\022\005pass1\032\000" | ||
| Entry: Term:16 Index:22 Data:"\010\021\352D\007\n\005name1" | ||
| Entry: Term:17 Index:23 Data:"\010\022\362D\007\n\005name1" | ||
| Entry: Term:18 Index:24 Data:"\010\023\372D\016\n\005name1\022\005pass2" | ||
| Entry: Term:19 Index:25 Data:"\010\024\202E\016\n\005user1\022\005role1" | ||
| Entry: Term:20 Index:26 Data:"\010\025\212E\016\n\005user2\022\005role2" | ||
| Entry: Term:21 Index:27 Data:"\010\026\222E\000" | ||
| Entry: Term:22 Index:28 Data:"\010\027\232E\000" | ||
| Entry: Term:23 Index:29 Data:"\010\030\202K\007\n\005role2" | ||
| Entry: Term:24 Index:30 Data:"\010\031\212K\007\n\005role1" | ||
| Entry: Term:25 Index:31 Data:"\010\032\222K\007\n\005role3" | ||
| Entry: Term:26 Index:32 Data:"\010\033\232K\033\n\005role3\022\022\010\001\022\004Keys\032\010RangeEnd" | ||
| Entry: Term:27 Index:33 Data:"\010\034\242K\026\n\005role3\022\003key\032\010rangeend" | ||
| Entry: Term:27 Index:34 Data:"?" | ||
| `, out.String()) | ||
| } |