63 lines
2.2 KiB
Go
63 lines
2.2 KiB
Go
// Copyright 2023 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package usage
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import (
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"context"
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"github.com/pingcap/tidb/pkg/infoschema"
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"github.com/pingcap/tidb/pkg/meta/model"
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"github.com/pingcap/tidb/pkg/sessionctx"
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"github.com/pingcap/tidb/pkg/statistics/handle/usage/indexusage"
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"github.com/pingcap/tidb/pkg/statistics/handle/util"
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)
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// NewSessionIndexUsageCollector creates a new Collector on the list.
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// The returned value's type should be *usage.SessionIndexUsageCollector, use interface{} to avoid cycle import now.
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func (u *statsUsageImpl) NewSessionIndexUsageCollector() *indexusage.SessionIndexUsageCollector {
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return u.idxUsageCollector.SpawnSessionCollector()
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}
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// GCIndexUsage removes unnecessary index usage data.
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func (u *statsUsageImpl) GCIndexUsage() error {
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return util.CallWithSCtx(u.statsHandle.SPool(), func(sctx sessionctx.Context) error {
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schema := sctx.GetLatestInfoSchema().(infoschema.InfoSchema)
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u.idxUsageCollector.GCIndexUsage(func(id int64) (*model.TableInfo, bool) {
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tbl, ok := schema.TableByID(context.Background(), id)
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if !ok {
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return nil, false
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}
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return tbl.Meta(), true
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})
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return nil
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})
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}
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// StartWorker starts for the collector worker.
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func (u *statsUsageImpl) StartWorker() {
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// TODO: after migrating other usage stats to also use the same collector, also start their worker here.
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u.idxUsageCollector.StartWorker()
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}
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// Close closes and waits for the index usage collector worker.
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func (u *statsUsageImpl) Close() {
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u.idxUsageCollector.Close()
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}
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// GetIndexUsage returns the index usage information
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func (u *statsUsageImpl) GetIndexUsage(tableID int64, indexID int64) indexusage.Sample {
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return u.idxUsageCollector.GetIndexUsage(tableID, indexID)
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}
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