a9c07acbfa
refactor to share code in emulated batch refactor to share code in emulated merge refactor index kvstore benchmarks to share more code refactor index kvstore benchmarks to be more repeatable
70 lines
1.5 KiB
Go
70 lines
1.5 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package store
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type op struct {
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K []byte
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V []byte
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}
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type EmulatedBatch struct {
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w KVWriter
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ops []*op
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merge *EmulatedMerge
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}
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func NewEmulatedBatch(w KVWriter, mo MergeOperator) *EmulatedBatch {
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return &EmulatedBatch{
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w: w,
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ops: make([]*op, 0, 1000),
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merge: NewEmulatedMerge(mo),
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}
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}
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func (b *EmulatedBatch) Set(key, val []byte) {
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b.ops = append(b.ops, &op{key, val})
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}
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func (b *EmulatedBatch) Delete(key []byte) {
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b.ops = append(b.ops, &op{key, nil})
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}
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func (b *EmulatedBatch) Merge(key, val []byte) {
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b.merge.Merge(key, val)
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}
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func (b *EmulatedBatch) Execute() error {
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// first process merges
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err := b.merge.Execute(b.w)
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if err != nil {
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return err
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}
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// now apply all the ops
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for _, op := range b.ops {
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if op.V != nil {
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err := b.w.Set(op.K, op.V)
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if err != nil {
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return err
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}
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} else {
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err := b.w.Delete(op.K)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (b *EmulatedBatch) Close() error {
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return nil
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}
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