/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 com.alibaba.jstorm.transactional.state;
public interface ICheckpoint<T> {
/**
* restore state by the specified checkpoint
* @param checkpoint
*/
public void restore(T checkpoint);
/**
* backup state for a batch
* @param batchId
* @return
*/
public T backup(long batchId);
/**
* checkpoint for a batch
* @param batchId
*/
public void checkpoint(long batchId);
/**
* remove the backup file both in local or remote storage for a successful batch
* @param batchId successful batch id
*/
public void remove(long batchId);
}