68 lines
1.8 KiB
Go
68 lines
1.8 KiB
Go
// Copyright 2015 CoreOS, 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 storage
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import (
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"encoding/binary"
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"time"
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)
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func (s *store) scheduleCompaction(compactMainRev int64, keep map[revision]struct{}) {
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defer s.wg.Done()
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totalStart := time.Now()
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defer dbCompactionTotalDurations.Observe(float64(time.Now().Sub(totalStart) / time.Millisecond))
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end := make([]byte, 8)
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binary.BigEndian.PutUint64(end, uint64(compactMainRev+1))
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batchsize := int64(10000)
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last := make([]byte, 8+1+8)
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for {
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var rev revision
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start := time.Now()
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tx := s.b.BatchTx()
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tx.Lock()
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keys, _ := tx.UnsafeRange(keyBucketName, last, end, batchsize)
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for _, key := range keys {
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rev = bytesToRev(key)
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if _, ok := keep[rev]; !ok {
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tx.UnsafeDelete(keyBucketName, key)
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}
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}
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if len(keys) < int(batchsize) {
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rbytes := make([]byte, 8+1+8)
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revToBytes(revision{main: compactMainRev}, rbytes)
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tx.UnsafePut(metaBucketName, finishedCompactKeyName, rbytes)
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tx.Unlock()
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return
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}
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// update last
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revToBytes(revision{main: rev.main, sub: rev.sub + 1}, last)
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tx.Unlock()
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dbCompactionPauseDurations.Observe(float64(time.Now().Sub(start) / time.Millisecond))
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select {
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case <-time.After(100 * time.Millisecond):
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case <-s.stopc:
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return
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}
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}
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}
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