tidb event 源码
tidb event 代码
文件路径：/ddl/util/event.go
// Copyright 2017 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"fmt"
"github.com/pingcap/tidb/parser/model"
)
// Event is an event that a ddl operation happened.
type Event struct {
TableInfo *model.TableInfo
PartInfo *model.PartitionInfo
IndexInfo *model.IndexInfo
ColumnInfos []*model.ColumnInfo
Tp model.ActionType
}
// String implements fmt.Stringer interface.
func (e *Event) String() string {
ret := fmt.Sprintf("(Event Type: %s", e.Tp)
if e.TableInfo != nil {
ret += fmt.Sprintf(", Table ID: %d, Table Name %s", e.TableInfo.ID, e.TableInfo.Name)
}
if e.PartInfo != nil {
ids := make([]int64, 0, len(e.PartInfo.Definitions))
for _, def := range e.PartInfo.Definitions {
ids = append(ids, def.ID)
}
ret += fmt.Sprintf(", Partition IDs: %v", ids)
}
for _, columnInfo := range e.ColumnInfos {
ret += fmt.Sprintf(", Column ID: %d, Column Name %s", columnInfo.ID, columnInfo.Name)
}
if e.IndexInfo != nil {
ret += fmt.Sprintf(", Index ID: %d, Index Name %s", e.IndexInfo.ID, e.IndexInfo.Name)
}
return ret
}
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