| /* |
| * |
| * 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.yetus.audience.InterfaceAudience; |
| |
| /** |
| * 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 the listener to register |
| */ |
| 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(); |
| } |