/*
*
* 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 org.apache.hadoop.hbase.classification.InterfaceAudience;
import java.util.List;
/**
* This is the interface for a Replication Tracker. A replication tracker provides the facility to
* subscribe and track events that reflect a change in replication state. These events are used by
* the ReplicationSourceManager to coordinate replication tasks such as addition/deletion of queues
* and queue failover. These events are defined in the ReplicationListener interface. If a class
* would like to listen to replication events it must implement the ReplicationListener interface
* and register itself with a Replication Tracker.
*/
@InterfaceAudience.Private
public interface ReplicationTracker {
/**
* Register a replication listener to receive replication events.
* @param listener
*/
public void registerListener(ReplicationListener listener);
public void removeListener(ReplicationListener listener);
/**
* Returns a list of other live region servers in the cluster.
* @return List of region servers.
*/
public List<String> getListOfRegionServers();
}