/*
*
* 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 org.apache.hadoop.hbase.replication;
import java.util.List;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
/**
* The replication listener interface can be implemented if a class needs to subscribe to events
* generated by the ReplicationTracker. These events include things like addition/deletion of peer
* clusters or failure of a local region server. To receive events, the class also needs to register
* itself with a Replication Tracker.
*/
@InterfaceAudience.Private
public interface ReplicationListener {
/**
* A region server has been removed from the local cluster
* @param regionServer the removed region server
*/
public void regionServerRemoved(String regionServer);
/**
* A peer cluster has been removed (i.e. unregistered) from replication.
* @param peerId The peer id of the cluster that has been removed
*/
public void peerRemoved(String peerId);
/**
* The list of registered peer clusters has changed.
* @param peerIds A list of all currently registered peer clusters
*/
public void peerListChanged(List<String> peerIds);
}