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// 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. | ||
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package pd | ||
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import ( | ||
"context" | ||
"time" | ||
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"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" | ||
) | ||
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// 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) | ||
} | ||
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// 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()) }() | ||
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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() | ||
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if err = c.respForErr(cmdFailedDurationUpdateGCSafePointV2, start, err, resp.GetHeader()); err != nil { | ||
return 0, err | ||
} | ||
return resp.GetNewSafePoint(), nil | ||
} | ||
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// 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 | ||
} | ||
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// 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, | ||
} | ||
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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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