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135 changes: 135 additions & 0 deletions
135
cdc/sinkv2/ddlsink/cloudstorage/cloud_storage_ddl_sink.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| // Copyright 2022 PingCAP, Inc. | ||
| // | ||
| // 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, | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package cloudstorage | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "net/url" | ||
|
|
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| "github.com/pingcap/errors" | ||
| "github.com/pingcap/tidb/br/pkg/storage" | ||
| "github.com/pingcap/tiflow/cdc/contextutil" | ||
| "github.com/pingcap/tiflow/cdc/model" | ||
| "github.com/pingcap/tiflow/cdc/sinkv2/ddlsink" | ||
| "github.com/pingcap/tiflow/cdc/sinkv2/metrics" | ||
| "github.com/pingcap/tiflow/pkg/sink" | ||
| "github.com/pingcap/tiflow/pkg/sink/cloudstorage" | ||
| ) | ||
|
|
||
| // Assert DDLEventSink implementation | ||
| var _ ddlsink.DDLEventSink = (*ddlSink)(nil) | ||
|
|
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| type ddlSink struct { | ||
| // id indicates which changefeed this sink belongs to. | ||
| id model.ChangeFeedID | ||
| // statistic is used to record the DDL metrics | ||
| statistics *metrics.Statistics | ||
| storage storage.ExternalStorage | ||
| tables *model.TableSet | ||
| } | ||
|
|
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| // NewCloudStorageDDLSink creates a ddl sink for cloud storage. | ||
| func NewCloudStorageDDLSink(ctx context.Context, sinkURI *url.URL) (*ddlSink, error) { | ||
| // parse backend storage from sinkURI | ||
| bs, err := storage.ParseBackend(sinkURI.String(), &storage.BackendOptions{}) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| // create an external storage. | ||
| storage, err := storage.New(ctx, bs, nil) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| changefeedID := contextutil.ChangefeedIDFromCtx(ctx) | ||
|
|
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| d := &ddlSink{ | ||
| id: changefeedID, | ||
| storage: storage, | ||
| tables: model.NewTableSet(), | ||
| statistics: metrics.NewStatistics(ctx, sink.TxnSink), | ||
| } | ||
|
|
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| return d, nil | ||
| } | ||
|
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| func (d *ddlSink) generateSchemaPath(def cloudstorage.TableDetail) string { | ||
| return fmt.Sprintf("%s/%s/%d/schema.json", def.Schema, def.Table, def.Version) | ||
| } | ||
|
|
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| func (d *ddlSink) WriteDDLEvent(ctx context.Context, ddl *model.DDLEvent) error { | ||
| var def cloudstorage.TableDetail | ||
|
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| def.FromTableInfo(ddl.TableInfo) | ||
| encodedDef, err := json.MarshalIndent(def, "", " ") | ||
| if err != nil { | ||
| return errors.Trace(err) | ||
| } | ||
|
|
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| path := d.generateSchemaPath(def) | ||
| err = d.statistics.RecordDDLExecution(func() error { | ||
| err1 := d.storage.WriteFile(ctx, path, encodedDef) | ||
| if err1 != nil { | ||
| return err1 | ||
| } | ||
|
|
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| d.tables.Add(ddl.TableInfo.ID) | ||
| return nil | ||
| }) | ||
|
|
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| return errors.Trace(err) | ||
| } | ||
|
|
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| func (d *ddlSink) WriteCheckpointTs(ctx context.Context, | ||
| ts uint64, tables []*model.TableInfo, | ||
| ) error { | ||
| for _, table := range tables { | ||
| ok := d.tables.Contain(table.ID) | ||
| // if table is not cached before, then create the corresponding | ||
| // schema.json file anyway. | ||
| if !ok { | ||
| var def cloudstorage.TableDetail | ||
| def.FromTableInfo(table) | ||
|
|
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| encodedDef, err := json.MarshalIndent(def, "", " ") | ||
| if err != nil { | ||
| return errors.Trace(err) | ||
| } | ||
|
|
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| path := d.generateSchemaPath(def) | ||
| err = d.storage.WriteFile(ctx, path, encodedDef) | ||
| if err != nil { | ||
| return errors.Trace(err) | ||
| } | ||
| d.tables.Add(table.ID) | ||
| } | ||
| } | ||
|
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| ckpt, err := json.Marshal(map[string]uint64{"checkpoint-ts": ts}) | ||
| if err != nil { | ||
| return errors.Trace(err) | ||
| } | ||
| err = d.storage.WriteFile(ctx, "metadata", ckpt) | ||
| return errors.Trace(err) | ||
| } | ||
|
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| func (d *ddlSink) Close() error { | ||
| if d.statistics != nil { | ||
| d.statistics.Close() | ||
| } | ||
|
|
||
| return nil | ||
| } |
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