529ce88c1c
* *: add TxnManager to manage txn in session * modify * add tests * move failpoint content to a single file
63 lines
1.6 KiB
Go
63 lines
1.6 KiB
Go
// Copyright 2021 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 session
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import (
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"github.com/pingcap/tidb/infoschema"
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"github.com/pingcap/tidb/sessionctx"
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"github.com/pingcap/tidb/sessiontxn"
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)
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func init() {
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sessiontxn.GetTxnManager = getTxnManager
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}
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func getTxnManager(sctx sessionctx.Context) sessiontxn.TxnManager {
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if manager, ok := sctx.GetSessionVars().TxnManager.(sessiontxn.TxnManager); ok {
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return manager
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}
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manager := newTxnManager(sctx)
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sctx.GetSessionVars().TxnManager = manager
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return manager
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}
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// txnManager implements sessiontxn.TxnManager
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type txnManager struct {
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sctx sessionctx.Context
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ctxProvider sessiontxn.TxnContextProvider
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}
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func newTxnManager(sctx sessionctx.Context) *txnManager {
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return &txnManager{sctx: sctx}
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}
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func (m *txnManager) GetTxnInfoSchema() infoschema.InfoSchema {
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if m.ctxProvider == nil {
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return nil
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}
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return m.ctxProvider.GetTxnInfoSchema()
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}
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func (m *txnManager) GetContextProvider() sessiontxn.TxnContextProvider {
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return m.ctxProvider
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}
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func (m *txnManager) SetContextProvider(provider sessiontxn.TxnContextProvider) error {
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m.ctxProvider = provider
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return nil
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}
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