335 lines
6.9 KiB
Go
335 lines
6.9 KiB
Go
// 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 kv
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import (
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"context"
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deadlockpb "github.com/pingcap/kvproto/pkg/deadlock"
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"github.com/pingcap/kvproto/pkg/kvrpcpb"
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"github.com/pingcap/tidb/pkg/meta/model"
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"github.com/tikv/client-go/v2/oracle"
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"github.com/tikv/client-go/v2/tikv"
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)
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// mockTxn is a txn that returns a retryAble error when called Commit.
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type mockTxn struct {
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opts map[int]any
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valid bool
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}
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func (t *mockTxn) SetAssertion(_ []byte, _ ...FlagsOp) error {
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return nil
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}
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// Commit always returns a retryable error.
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func (t *mockTxn) Commit(ctx context.Context) error {
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return ErrTxnRetryable
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}
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func (t *mockTxn) Rollback() error {
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t.valid = false
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return nil
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}
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func (t *mockTxn) String() string {
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return ""
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}
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func (t *mockTxn) LockKeys(_ context.Context, _ *LockCtx, _ ...Key) error {
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return nil
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}
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func (t *mockTxn) LockKeysFunc(_ context.Context, _ *LockCtx, fn func(), _ ...Key) error {
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if fn != nil {
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fn()
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}
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return nil
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}
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func (t *mockTxn) SetOption(opt int, val any) {
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t.opts[opt] = val
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}
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func (t *mockTxn) GetOption(opt int) any {
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return t.opts[opt]
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}
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func (t *mockTxn) IsReadOnly() bool {
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return true
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}
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func (t *mockTxn) StartTS() uint64 {
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return uint64(0)
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}
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func (t *mockTxn) CommitTS() uint64 {
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return 0
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}
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func (t *mockTxn) Get(ctx context.Context, k Key, _ ...GetOption) (ValueEntry, error) {
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return ValueEntry{}, nil
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}
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func (t *mockTxn) BatchGet(ctx context.Context, keys []Key, _ ...BatchGetOption) (map[string]ValueEntry, error) {
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return nil, nil
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}
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func (t *mockTxn) Iter(k Key, upperBound Key) (Iterator, error) {
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return nil, nil
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}
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func (t *mockTxn) IterReverse(k Key, lowerBound Key) (Iterator, error) {
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return nil, nil
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}
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func (t *mockTxn) Set(k Key, v []byte) error {
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return nil
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}
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func (t *mockTxn) Delete(k Key) error {
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return nil
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}
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func (t *mockTxn) Valid() bool {
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return t.valid
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}
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func (t *mockTxn) Len() int {
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return 0
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}
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func (t *mockTxn) Size() int {
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return 0
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}
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func (t *mockTxn) GetMemBuffer() MemBuffer {
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return nil
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}
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func (t *mockTxn) GetSnapshot() Snapshot {
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return nil
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}
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func (t *mockTxn) NewStagingBuffer() MemBuffer {
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return nil
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}
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func (t *mockTxn) Flush() (int, error) {
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return 0, nil
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}
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func (t *mockTxn) Discard() {
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}
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func (t *mockTxn) Reset() {
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t.valid = false
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}
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func (t *mockTxn) SetVars(vars any) {
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}
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func (t *mockTxn) GetVars() any {
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return nil
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}
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func (t *mockTxn) CacheTableInfo(id int64, info *model.TableInfo) {
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}
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func (t *mockTxn) GetTableInfo(id int64) *model.TableInfo {
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return nil
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}
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func (t *mockTxn) SetDiskFullOpt(level kvrpcpb.DiskFullOpt) {
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// TODO nothing
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}
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func (t *mockTxn) GetMemDBCheckpoint() *tikv.MemDBCheckpoint {
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return nil
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}
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func (t *mockTxn) RollbackMemDBToCheckpoint(_ *tikv.MemDBCheckpoint) {
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// TODO nothing
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}
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func (t *mockTxn) ClearDiskFullOpt() {
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// TODO nothing
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}
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func (t *mockTxn) UpdateMemBufferFlags(_ []byte, _ ...FlagsOp) {
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}
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func (t *mockTxn) SetMemoryFootprintChangeHook(func(uint64)) {
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}
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func (t *mockTxn) MemHookSet() bool { return false }
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func (t *mockTxn) Mem() uint64 {
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return 0
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}
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func (t *mockTxn) StartFairLocking() error { return nil }
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func (t *mockTxn) RetryFairLocking(_ context.Context) error { return nil }
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func (t *mockTxn) CancelFairLocking(_ context.Context) error { return nil }
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func (t *mockTxn) DoneFairLocking(_ context.Context) error { return nil }
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func (t *mockTxn) IsInFairLockingMode() bool { return false }
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func (t *mockTxn) IsPipelined() bool { return false }
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func (t *mockTxn) MayFlush() error { return nil }
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// newMockTxn new a mockTxn.
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func newMockTxn() Transaction {
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return &mockTxn{
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opts: make(map[int]any),
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valid: true,
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}
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}
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// mockStorage is used to start a must commit-failed txn.
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type mockStorage struct{}
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func (s *mockStorage) GetOption(k any) (any, bool) {
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return nil, false
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}
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func (s *mockStorage) SetOption(k any, v any) {
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}
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func (s *mockStorage) GetCodec() tikv.Codec {
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return nil
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}
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func (s *mockStorage) Begin(opts ...tikv.TxnOption) (Transaction, error) {
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return newMockTxn(), nil
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}
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func (*mockTxn) IsPessimistic() bool {
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return false
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}
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func (s *mockStorage) GetSnapshot(ver Version) Snapshot {
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return &mockSnapshot{
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store: newMockMap(),
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}
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}
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func (s *mockStorage) Close() error {
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return nil
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}
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func (s *mockStorage) UUID() string {
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return ""
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}
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// CurrentVersion returns current max committed version.
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func (s *mockStorage) CurrentVersion(txnScope string) (Version, error) {
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return NewVersion(1), nil
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}
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func (s *mockStorage) GetClient() Client {
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return nil
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}
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func (s *mockStorage) GetMPPClient() MPPClient {
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return nil
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}
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func (s *mockStorage) GetOracle() oracle.Oracle {
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return nil
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}
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func (s *mockStorage) SupportDeleteRange() (supported bool) {
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return false
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}
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func (s *mockStorage) Name() string {
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return "KVMockStorage"
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}
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func (s *mockStorage) Describe() string {
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return "KVMockStorage is a mock Store implementation, only for unittests in KV package"
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}
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func (s *mockStorage) ShowStatus(ctx context.Context, key string) (any, error) {
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return nil, nil
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}
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func (s *mockStorage) GetMemCache() MemManager {
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return nil
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}
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func (s *mockStorage) GetLockWaits() ([]*deadlockpb.WaitForEntry, error) {
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return nil, nil
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}
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func (s *mockStorage) GetMinSafeTS(txnScope string) uint64 {
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return 0
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}
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func (s *mockStorage) GetClusterID() uint64 {
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return 1
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}
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func (s *mockStorage) GetKeyspace() string {
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return ""
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}
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// newMockStorage creates a new mockStorage.
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func newMockStorage() Storage {
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return &mockStorage{}
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}
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type mockSnapshot struct {
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store Retriever
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}
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func (s *mockSnapshot) Get(ctx context.Context, k Key, options ...GetOption) (ValueEntry, error) {
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return s.store.Get(ctx, k)
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}
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func (s *mockSnapshot) SetPriority(priority int) {
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}
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func (s *mockSnapshot) BatchGet(ctx context.Context, keys []Key, options ...BatchGetOption) (map[string]ValueEntry, error) {
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m := make(map[string]ValueEntry, len(keys))
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getOptions := BatchGetToGetOptions(options)
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for _, k := range keys {
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v, err := s.store.Get(ctx, k, getOptions...)
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if IsErrNotFound(err) {
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continue
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}
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if err != nil {
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return nil, err
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}
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m[string(k)] = v
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}
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return m, nil
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}
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func (s *mockSnapshot) Iter(k Key, upperBound Key) (Iterator, error) {
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return s.store.Iter(k, upperBound)
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}
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func (s *mockSnapshot) IterReverse(k Key, lowerBound Key) (Iterator, error) {
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return s.store.IterReverse(k, lowerBound)
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}
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func (s *mockSnapshot) SetOption(opt int, val any) {}
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func (s *mockSnapshot) GetLockWaits() []deadlockpb.WaitForEntry {
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return nil
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}
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