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cdc 同步 与存储团队协作的pr，包含了一些存储相关的commit. 产品文档：https://doc.weixin.qq.com/doc/w3_AVQAQwZ_AEg0dhxSTtQTPCH1mV6Yp?scode=AJsA6gc3AA8nT7JCGWAVQAQwZ_AEg 设计文档：https://doc.weixin.qq.com/doc/w3_AAgAkgYHABUIG1e7FhaTO0Xx9x0cX?scode=AJsA6gc3AA8Q3ATVg4AAgAkgYHABU mo_cdc工具 https://github.com/matrixorigin/mo-backup https://github.com/matrixorigin/ci-test/actions/runs/10863063831 https://github.com/matrixorigin/ci-test/actions/runs/10868389808 Approved by: @zhangxu19830126, @badboynt1, @XuPeng-SH, @heni02, @LeftHandCold, @aptend, @reusee, @m-schen, @qingxinhome, @aressu1985, @ouyuanning, @iamlinjunhong, @triump2020, @aunjgr, @fengttt, @sukki37
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| // Copyright 2024 Matrix Origin | ||
| // | ||
| // 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 cdc | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "time" | ||
|
|
||
| "github.com/matrixorigin/matrixone/pkg/common/moerr" | ||
| "github.com/matrixorigin/matrixone/pkg/common/mpool" | ||
| "github.com/matrixorigin/matrixone/pkg/container/batch" | ||
| "github.com/matrixorigin/matrixone/pkg/container/types" | ||
| "github.com/matrixorigin/matrixone/pkg/fileservice" | ||
| "github.com/matrixorigin/matrixone/pkg/logutil" | ||
| "github.com/matrixorigin/matrixone/pkg/pb/plan" | ||
| "github.com/matrixorigin/matrixone/pkg/txn/client" | ||
| "github.com/matrixorigin/matrixone/pkg/vm/engine" | ||
| ) | ||
|
|
||
| var _ Reader = new(tableReader) | ||
|
|
||
| type tableReader struct { | ||
| cnTxnClient client.TxnClient | ||
| cnEngine engine.Engine | ||
| mp *mpool.MPool | ||
| packerPool *fileservice.Pool[*types.Packer] | ||
| info *DbTableInfo | ||
| sinker Sinker | ||
| wMarkUpdater *WatermarkUpdater | ||
| tick *time.Ticker | ||
| restartFunc func(*DbTableInfo) error | ||
|
|
||
| insTsColIdx, insCompositedPkColIdx int | ||
| delTsColIdx, delCompositedPkColIdx int | ||
| } | ||
|
|
||
| func NewTableReader( | ||
| cnTxnClient client.TxnClient, | ||
| cnEngine engine.Engine, | ||
| mp *mpool.MPool, | ||
| packerPool *fileservice.Pool[*types.Packer], | ||
| info *DbTableInfo, | ||
| sinker Sinker, | ||
| wMarkUpdater *WatermarkUpdater, | ||
| tableDef *plan.TableDef, | ||
| restartFunc func(*DbTableInfo) error, | ||
| ) Reader { | ||
| reader := &tableReader{ | ||
| cnTxnClient: cnTxnClient, | ||
| cnEngine: cnEngine, | ||
| mp: mp, | ||
| packerPool: packerPool, | ||
| info: info, | ||
| sinker: sinker, | ||
| wMarkUpdater: wMarkUpdater, | ||
| tick: time.NewTicker(200 * time.Millisecond), | ||
| restartFunc: restartFunc, | ||
| } | ||
|
|
||
| // batch columns layout: | ||
| // 1. data: user defined cols | cpk (if need) | commit-ts | ||
| // 2. tombstone: pk/cpk | commit-ts | ||
| reader.insTsColIdx, reader.insCompositedPkColIdx = len(tableDef.Cols)-1, len(tableDef.Cols)-2 | ||
| reader.delTsColIdx, reader.delCompositedPkColIdx = 1, 0 | ||
| // if single col pk, there's no additional cpk col | ||
| if len(tableDef.Pkey.Names) == 1 { | ||
| reader.insCompositedPkColIdx = int(tableDef.Name2ColIndex[tableDef.Pkey.Names[0]]) | ||
| } | ||
| return reader | ||
| } | ||
|
|
||
| func (reader *tableReader) Close() {} | ||
|
|
||
| func (reader *tableReader) Run( | ||
| ctx context.Context, | ||
| ar *ActiveRoutine) { | ||
| logutil.Infof("^^^^^ tableReader(%s).Run: start", reader.info.SourceTblName) | ||
| defer func() { | ||
| logutil.Infof("^^^^^ tableReader(%s).Run: end", reader.info.SourceTblName) | ||
| }() | ||
|
|
||
| for { | ||
| select { | ||
| case <-ctx.Done(): | ||
| return | ||
| case <-ar.Cancel: | ||
| return | ||
| case <-reader.tick.C: | ||
| } | ||
|
|
||
| if err := reader.readTable(ctx, ar); err != nil { | ||
| logutil.Errorf("reader %v failed err:%v", reader.info, err) | ||
|
|
||
| // if stale read, restart reader | ||
| var moErr *moerr.Error | ||
| if errors.As(err, &moErr) && moErr.ErrorCode() == moerr.ErrStaleRead { | ||
| if err = reader.restartFunc(reader.info); err != nil { | ||
| logutil.Errorf("reader %v restart failed, err:%v", reader.info, err) | ||
| return | ||
| } | ||
| continue | ||
| } | ||
|
|
||
| return | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (reader *tableReader) readTable( | ||
| ctx context.Context, | ||
| ar *ActiveRoutine) (err error) { | ||
|
|
||
| var txnOp client.TxnOperator | ||
| //step1 : create an txnOp | ||
| txnOp, err = GetTxnOp(ctx, reader.cnEngine, reader.cnTxnClient, "readMultipleTables") | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer func() { | ||
| FinishTxnOp(ctx, err, txnOp, reader.cnEngine) | ||
| }() | ||
| err = GetTxn(ctx, reader.cnEngine, txnOp) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| var packer *types.Packer | ||
| put := reader.packerPool.Get(&packer) | ||
| defer put.Put() | ||
|
|
||
| //step2 : read table | ||
| err = reader.readTableWithTxn( | ||
| ctx, | ||
| txnOp, | ||
| packer, | ||
| ar) | ||
|
|
||
| return | ||
| } | ||
|
|
||
| func (reader *tableReader) readTableWithTxn( | ||
| ctx context.Context, | ||
| txnOp client.TxnOperator, | ||
| packer *types.Packer, | ||
| ar *ActiveRoutine) (err error) { | ||
| var rel engine.Relation | ||
| var changes engine.ChangesHandle | ||
| //step1 : get relation | ||
| _, _, rel, err = GetRelationById(ctx, reader.cnEngine, txnOp, reader.info.SourceTblId) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| //step2 : define time range | ||
| // from = last wmark | ||
| // to = txn operator snapshot ts | ||
| fromTs := reader.wMarkUpdater.GetFromMem(reader.info.SourceTblId) | ||
| toTs := types.TimestampToTS(GetSnapshotTS(txnOp)) | ||
| //fmt.Fprintln(os.Stderr, reader.info, "from", fromTs.ToString(), "to", toTs.ToString()) | ||
| changes, err = CollectChanges(ctx, rel, fromTs, toTs, reader.mp) | ||
| if err != nil { | ||
| return | ||
| } | ||
| defer changes.Close() | ||
|
|
||
| //step3: pull data | ||
| var insertData, deleteData *batch.Batch | ||
| var insertAtmBatch, deleteAtmBatch *AtomicBatch | ||
|
|
||
| allocateAtomicBatchIfNeed := func(atmBatch *AtomicBatch) *AtomicBatch { | ||
| if atmBatch == nil { | ||
| atmBatch = NewAtomicBatch( | ||
| reader.mp, | ||
| fromTs, toTs, | ||
| ) | ||
| } | ||
| return atmBatch | ||
| } | ||
|
|
||
| //batchSize := func(bat *batch.Batch) int { | ||
| // if bat == nil { | ||
| // return 0 | ||
| // } | ||
| // return bat.Vecs[0].Length() | ||
| //} | ||
|
|
||
| var curHint engine.ChangesHandle_Hint | ||
| for { | ||
| select { | ||
| case <-ctx.Done(): | ||
| return | ||
| case <-ar.Cancel: | ||
| return | ||
| default: | ||
| } | ||
|
|
||
| if insertData, deleteData, curHint, err = changes.Next(ctx, reader.mp); err != nil { | ||
| return | ||
| } | ||
|
|
||
| //_, _ = fmt.Fprintf(os.Stderr, "^^^^^ Reader: [%s, %s), "+ | ||
| // "curHint: %v, insertData is nil: %v, deleteData is nil: %v, "+ | ||
| // "insertDataSize() = %d, deleteDataSize() = %d\n", | ||
| // fromTs.ToString(), toTs.ToString(), | ||
| // curHint, insertData == nil, deleteData == nil, | ||
| // batchSize(insertData), batchSize(deleteData), | ||
| //) | ||
|
|
||
| //both nil denote no more data | ||
| if insertData == nil && deleteData == nil { | ||
| //FIXME: it is engine's bug | ||
| //Tail_wip does not finished with Tail_done | ||
| if insertAtmBatch != nil || deleteAtmBatch != nil { | ||
| err = reader.sinker.Sink(ctx, &DecoderOutput{ | ||
| outputTyp: OutputTypeTailDone, | ||
| insertAtmBatch: insertAtmBatch, | ||
| deleteAtmBatch: deleteAtmBatch, | ||
| fromTs: fromTs, | ||
| toTs: toTs, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| insertAtmBatch = nil | ||
| deleteAtmBatch = nil | ||
| } | ||
|
|
||
| // heartbeat | ||
| err = reader.sinker.Sink(ctx, &DecoderOutput{ | ||
| noMoreData: true, | ||
| fromTs: fromTs, | ||
| toTs: toTs, | ||
| }) | ||
| return | ||
| } | ||
|
|
||
| switch curHint { | ||
| case engine.ChangesHandle_Snapshot: | ||
| // transform into insert instantly | ||
| err = reader.sinker.Sink(ctx, &DecoderOutput{ | ||
| outputTyp: OutputTypeCheckpoint, | ||
| checkpointBat: insertData, | ||
| fromTs: fromTs, | ||
| toTs: toTs, | ||
| }) | ||
| case engine.ChangesHandle_Tail_wip: | ||
| insertAtmBatch = allocateAtomicBatchIfNeed(insertAtmBatch) | ||
| deleteAtmBatch = allocateAtomicBatchIfNeed(deleteAtmBatch) | ||
| insertAtmBatch.Append(packer, insertData, reader.insTsColIdx, reader.insCompositedPkColIdx) | ||
| deleteAtmBatch.Append(packer, deleteData, reader.delTsColIdx, reader.delCompositedPkColIdx) | ||
| case engine.ChangesHandle_Tail_done: | ||
| insertAtmBatch = allocateAtomicBatchIfNeed(insertAtmBatch) | ||
| deleteAtmBatch = allocateAtomicBatchIfNeed(deleteAtmBatch) | ||
| insertAtmBatch.Append(packer, insertData, reader.insTsColIdx, reader.insCompositedPkColIdx) | ||
| deleteAtmBatch.Append(packer, deleteData, reader.delTsColIdx, reader.delCompositedPkColIdx) | ||
| err = reader.sinker.Sink(ctx, &DecoderOutput{ | ||
| outputTyp: OutputTypeTailDone, | ||
| insertAtmBatch: insertAtmBatch, | ||
| deleteAtmBatch: deleteAtmBatch, | ||
| fromTs: fromTs, | ||
| toTs: toTs, | ||
| }) | ||
| insertAtmBatch = nil | ||
| deleteAtmBatch = nil | ||
| } | ||
|
|
||
| if err != nil { | ||
| return | ||
| } | ||
| } | ||
| } |
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