f86a32d261
Pass query string in context, also disallows prepare DDL, so we can be sure that DDL query do not contains parameter marker. change binlog row encoding format. including columnID in binlog row, so it can be adapted to different schema version. prepend old row for update binlog when don't have PK.
61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
// Copyright 2015 PingCAP, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package context
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"github.com/pingcap/tidb/kv"
|
|
)
|
|
|
|
// Context is an interface for transaction and executive args environment.
|
|
type Context interface {
|
|
// GetTxn gets a transaction for further execution.
|
|
GetTxn(forceNew bool) (kv.Transaction, error)
|
|
|
|
// GetClient gets a kv.Client.
|
|
GetClient() kv.Client
|
|
|
|
// RollbackTxn rolls back the current transaction.
|
|
RollbackTxn() error
|
|
|
|
// CommitTxn commits the current transaction.
|
|
CommitTxn() error
|
|
|
|
// SetValue saves a value associated with this context for key.
|
|
SetValue(key fmt.Stringer, value interface{})
|
|
|
|
// Value returns the value associated with this context for key.
|
|
Value(key fmt.Stringer) interface{}
|
|
|
|
// ClearValue clears the value associated with this context for key.
|
|
ClearValue(key fmt.Stringer)
|
|
}
|
|
|
|
type basicCtxType int
|
|
|
|
func (t basicCtxType) String() string {
|
|
switch t {
|
|
case QueryString:
|
|
return "query_string"
|
|
}
|
|
return "unknown"
|
|
}
|
|
|
|
// Context keys.
|
|
const (
|
|
// QueryString is the key for original query string.
|
|
QueryString basicCtxType = 1
|
|
)
|