You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
1.4 KiB
45 lines
1.4 KiB
// 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 ddl
|
|
|
|
import "github.com/pingcap/tidb/model"
|
|
|
|
// Callback is the interface supporting callback function when DDL changed.
|
|
type Callback interface {
|
|
// OnChanged is called after schema is changed.
|
|
OnChanged(err error) error
|
|
// OnJobRunBefore is called before running job.
|
|
OnJobRunBefore(job *model.Job)
|
|
// OnJobUpdated is called after the running job is updated.
|
|
OnJobUpdated(job *model.Job)
|
|
}
|
|
|
|
// BaseCallback implements Callback.OnChanged interface.
|
|
type BaseCallback struct {
|
|
}
|
|
|
|
// OnChanged implements Callback interface.
|
|
func (c *BaseCallback) OnChanged(err error) error {
|
|
return err
|
|
}
|
|
|
|
// OnJobRunBefore implements Callback.OnJobRunBefore interface.
|
|
func (c *BaseCallback) OnJobRunBefore(job *model.Job) {
|
|
// Nothing to do.
|
|
}
|
|
|
|
// OnJobUpdated implements Callback.OnJobUpdated interface.
|
|
func (c *BaseCallback) OnJobUpdated(job *model.Job) {
|
|
// Nothing to do.
|
|
}
|
|
|