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Introduce keyspace safepoint interface (#6419)
ref #6487 Signed-off-by: AmoebaProtozoa <8039876+AmoebaProtozoa@users.noreply.github.com> Co-authored-by: AmoebaProtozoa <8039876+AmoebaProtozoa@users.noreply.github.com> Co-authored-by: David <8039876+AmoebaProtozoa@users.noreply.github.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| // Copyright 2023 TiKV Project 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 pd | ||
|
|
||
| import ( | ||
| "context" | ||
| "time" | ||
|
|
||
| "github.com/opentracing/opentracing-go" | ||
| "github.com/pingcap/kvproto/pkg/pdpb" | ||
| "github.com/pingcap/log" | ||
| "github.com/tikv/pd/client/errs" | ||
| "github.com/tikv/pd/client/grpcutil" | ||
| "go.uber.org/zap" | ||
| ) | ||
|
|
||
| // GCClient is a client for doing GC | ||
| type GCClient interface { | ||
| UpdateGCSafePointV2(ctx context.Context, keyspaceID uint32, safePoint uint64) (uint64, error) | ||
| UpdateServiceSafePointV2(ctx context.Context, keyspaceID uint32, serviceID string, ttl int64, safePoint uint64) (uint64, error) | ||
| WatchGCSafePointV2(ctx context.Context, revision int64) (chan []*pdpb.SafePointEvent, error) | ||
| } | ||
|
|
||
| // UpdateGCSafePointV2 update gc safe point for the given keyspace. | ||
| func (c *client) UpdateGCSafePointV2(ctx context.Context, keyspaceID uint32, safePoint uint64) (uint64, error) { | ||
| if span := opentracing.SpanFromContext(ctx); span != nil { | ||
| span = opentracing.StartSpan("pdclient.UpdateGCSafePointV2", opentracing.ChildOf(span.Context())) | ||
| defer span.Finish() | ||
| } | ||
| start := time.Now() | ||
| defer func() { cmdDurationUpdateGCSafePointV2.Observe(time.Since(start).Seconds()) }() | ||
|
|
||
| ctx, cancel := context.WithTimeout(ctx, c.option.timeout) | ||
| req := &pdpb.UpdateGCSafePointV2Request{ | ||
| Header: c.requestHeader(), | ||
| KeyspaceId: keyspaceID, | ||
| SafePoint: safePoint, | ||
| } | ||
| ctx = grpcutil.BuildForwardContext(ctx, c.GetLeaderAddr()) | ||
| protoClient := c.getClient() | ||
| if protoClient == nil { | ||
| cancel() | ||
| return 0, errs.ErrClientGetProtoClient | ||
| } | ||
| resp, err := protoClient.UpdateGCSafePointV2(ctx, req) | ||
| cancel() | ||
|
|
||
| if err = c.respForErr(cmdFailedDurationUpdateGCSafePointV2, start, err, resp.GetHeader()); err != nil { | ||
| return 0, err | ||
| } | ||
| return resp.GetNewSafePoint(), nil | ||
| } | ||
|
|
||
| // UpdateServiceSafePointV2 update service safe point for the given keyspace. | ||
| func (c *client) UpdateServiceSafePointV2(ctx context.Context, keyspaceID uint32, serviceID string, ttl int64, safePoint uint64) (uint64, error) { | ||
| if span := opentracing.SpanFromContext(ctx); span != nil { | ||
| span = opentracing.StartSpan("pdclient.UpdateServiceSafePointV2", opentracing.ChildOf(span.Context())) | ||
| defer span.Finish() | ||
| } | ||
| start := time.Now() | ||
| defer func() { cmdDurationUpdateServiceSafePointV2.Observe(time.Since(start).Seconds()) }() | ||
|
|
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| ctx, cancel := context.WithTimeout(ctx, c.option.timeout) | ||
| req := &pdpb.UpdateServiceSafePointV2Request{ | ||
| Header: c.requestHeader(), | ||
| KeyspaceId: keyspaceID, | ||
| ServiceId: []byte(serviceID), | ||
| SafePoint: safePoint, | ||
| Ttl: ttl, | ||
| } | ||
| ctx = grpcutil.BuildForwardContext(ctx, c.GetLeaderAddr()) | ||
| protoClient := c.getClient() | ||
| if protoClient == nil { | ||
| cancel() | ||
| return 0, errs.ErrClientGetProtoClient | ||
| } | ||
| resp, err := protoClient.UpdateServiceSafePointV2(ctx, req) | ||
| cancel() | ||
| if err = c.respForErr(cmdFailedDurationUpdateServiceSafePointV2, start, err, resp.GetHeader()); err != nil { | ||
| return 0, err | ||
| } | ||
| return resp.GetMinSafePoint(), nil | ||
| } | ||
|
|
||
| // WatchGCSafePointV2 watch gc safe point change. | ||
| func (c *client) WatchGCSafePointV2(ctx context.Context, revision int64) (chan []*pdpb.SafePointEvent, error) { | ||
| SafePointEventsChan := make(chan []*pdpb.SafePointEvent) | ||
| req := &pdpb.WatchGCSafePointV2Request{ | ||
| Header: c.requestHeader(), | ||
| Revision: revision, | ||
| } | ||
|
|
||
| protoClient := c.getClient() | ||
| if protoClient == nil { | ||
| return nil, errs.ErrClientGetProtoClient | ||
| } | ||
| stream, err := protoClient.WatchGCSafePointV2(ctx, req) | ||
| if err != nil { | ||
| close(SafePointEventsChan) | ||
| return nil, err | ||
| } | ||
| go func() { | ||
| defer func() { | ||
| close(SafePointEventsChan) | ||
| if r := recover(); r != nil { | ||
| log.Error("[pd] panic in gc client `WatchGCSafePointV2`", zap.Any("error", r)) | ||
| return | ||
| } | ||
| }() | ||
| for { | ||
| select { | ||
| case <-ctx.Done(): | ||
| return | ||
| default: | ||
| resp, err := stream.Recv() | ||
| if err != nil { | ||
| log.Error("watch gc safe point v2 error", errs.ZapError(errs.ErrClientWatchGCSafePointV2Stream, err)) | ||
| return | ||
| } | ||
| SafePointEventsChan <- resp.GetEvents() | ||
| } | ||
| } | ||
| }() | ||
| return SafePointEventsChan, err | ||
| } |
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