41 lines
1.2 KiB
Go
41 lines
1.2 KiB
Go
// Copyright 2015 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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// See the License for the specific language governing permissions and
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// limitations under the License.
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package kv
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import "time"
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// CompactPolicy defines gc policy of MVCC storage.
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type CompactPolicy struct {
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// SafePoint specifies
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SafePoint int
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// TriggerInterval specifies how often should the compactor
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// scans outdated data.
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TriggerInterval time.Duration
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// BatchDeleteCnt specifies the batch size for
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// deleting outdated data transaction.
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BatchDeleteCnt int
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}
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// Compactor compacts MVCC storage.
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type Compactor interface {
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// OnGet is the hook point on Txn.Get.
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OnGet(k Key)
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// OnSet is the hook point on Txn.Set.
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OnSet(k Key)
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// OnDelete is the hook point on Txn.Delete.
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OnDelete(k Key)
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// Compact is the function removes the given key.
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Compact(ctx interface{}, k Key) error
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}
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