mirror of https://github.com/tikv/client-go.git
127 lines
3.3 KiB
Go
127 lines
3.3 KiB
Go
// Copyright 2021 TiKV Authors
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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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// NOTE: The code in this file is based on code from the
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// TiDB project, licensed under the Apache License v 2.0
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//
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// https://github.com/pingcap/tidb/tree/cc5e161ac06827589c4966674597c137cc9e809c/store/tikv/tests/snapshot_test.go
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//
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// Copyright 2016 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 transaction
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import (
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"context"
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"testing"
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"github.com/stretchr/testify/assert"
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tikverr "github.com/tikv/client-go/v2/error"
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"github.com/tikv/client-go/v2/kv"
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)
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func TestBufferBatchGetter(t *testing.T) {
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snap := newMockStore()
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ka := []byte("a")
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kb := []byte("b")
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kc := []byte("c")
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kd := []byte("d")
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snap.Set(ka, ka)
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snap.Set(kb, kb)
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snap.Set(kc, kc)
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snap.Set(kd, kd)
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buffer := newMockStore()
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buffer.Set(ka, []byte("a1"))
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buffer.Delete(kb)
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batchGetter := NewBufferBatchGetter(buffer, snap)
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result, err := batchGetter.BatchGet(context.Background(), [][]byte{ka, kb, kc, kd})
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assert.NoError(t, err)
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assert.Equal(t, 3, len(result))
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assert.Equal(t, "a1", string(result[string(ka)]))
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assert.Equal(t, "c", string(result[string(kc)]))
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assert.Equal(t, "d", string(result[string(kd)]))
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}
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type mockBatchGetterStore struct {
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index [][]byte
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value [][]byte
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}
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func newMockStore() *mockBatchGetterStore {
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return &mockBatchGetterStore{
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index: make([][]byte, 0),
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value: make([][]byte, 0),
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}
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}
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func (s *mockBatchGetterStore) Len() int {
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return len(s.index)
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}
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func (s *mockBatchGetterStore) Get(ctx context.Context, k []byte) ([]byte, error) {
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for i, key := range s.index {
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if kv.CmpKey(key, k) == 0 {
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return s.value[i], nil
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}
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}
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return nil, tikverr.ErrNotExist
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}
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func (s *mockBatchGetterStore) BatchGet(ctx context.Context, keys [][]byte) (map[string][]byte, error) {
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m := make(map[string][]byte)
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for _, k := range keys {
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v, err := s.Get(ctx, k)
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if err == nil {
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m[string(k)] = v
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continue
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}
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if tikverr.IsErrNotFound(err) {
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continue
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}
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return m, err
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}
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return m, nil
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}
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func (s *mockBatchGetterStore) Set(k []byte, v []byte) error {
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for i, key := range s.index {
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if kv.CmpKey(key, k) == 0 {
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s.value[i] = v
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return nil
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}
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}
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s.index = append(s.index, k)
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s.value = append(s.value, v)
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return nil
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}
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func (s *mockBatchGetterStore) Delete(k []byte) error {
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s.Set(k, []byte{})
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return nil
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}
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