mirror of https://github.com/apache/cloudstack.git
49 lines
1.7 KiB
Java
49 lines
1.7 KiB
Java
// Copyright 2012 Citrix Systems, Inc. Licensed under the
|
|
// Apache License, Version 2.0 (the "License"); you may not use this
|
|
// file except in compliance with the License. Citrix Systems, Inc.
|
|
// reserves all rights not expressly granted by 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.
|
|
//
|
|
// Automatically generated by addcopyright.py at 04/03/2012
|
|
package com.cloud.cluster;
|
|
|
|
|
|
/**
|
|
* TaskManager helps business logic deal with clustering failover.
|
|
* Say you're writing code that introduces an inconsistent state over
|
|
* of your operation? Who will come back to cleanup this state? TaskManager
|
|
* with different content during your process. If the server dies, TaskManager
|
|
* running elsewhere. If there are no clustered servers, then TaskManager will
|
|
* cleanup when the dead server resumes.
|
|
*
|
|
*/
|
|
public interface CheckPointManager {
|
|
/**
|
|
* responsible for cleaning up.
|
|
*
|
|
* @param context context information to be stored.
|
|
* @return Check point id.
|
|
*/
|
|
long pushCheckPoint(CleanupMaid context);
|
|
|
|
/**
|
|
* update the task with new context
|
|
* @param taskId
|
|
* @param updatedContext new updated context.
|
|
*/
|
|
void updateCheckPointState(long taskId, CleanupMaid updatedContext);
|
|
|
|
|
|
/**
|
|
* removes the task as it is completed.
|
|
*
|
|
* @param taskId
|
|
*/
|
|
void popCheckPoint(long taskId);
|
|
}
|