| /* |
| * Copyright 2010 The Apache Software Foundation |
| * |
| * 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.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.HServerAddress; |
| import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher; |
| |
| /** |
| * This class acts as a wrapper for all the objects used to identify and |
| * communicate with remote peers. Everything needs to be created for objects |
| * of this class as it doesn't encapsulate any specific functionality e.g. |
| * it's a container class. |
| */ |
| public class ReplicationPeer { |
| |
| private final String clusterKey; |
| private final String id; |
| private List<HServerAddress> regionServers = |
| new ArrayList<HServerAddress>(0); |
| private final AtomicBoolean peerEnabled = new AtomicBoolean(); |
| // Cannot be final since a new object needs to be recreated when session fails |
| private ZooKeeperWatcher zkw; |
| private final Configuration conf; |
| |
| /** |
| * Constructor that takes all the objects required to communicate with the |
| * specified peer, except for the region server addresses. |
| * @param conf configuration object to this peer |
| * @param key cluster key used to locate the peer |
| * @param id string representation of this peer's identifier |
| * @param zkw zookeeper connection to the peer |
| */ |
| public ReplicationPeer(Configuration conf, String key, |
| String id, ZooKeeperWatcher zkw) { |
| this.conf = conf; |
| this.clusterKey = key; |
| this.id = id; |
| this.zkw = zkw; |
| } |
| |
| /** |
| * Get the cluster key of that peer |
| * @return string consisting of zk ensemble addresses, client port |
| * and root znode |
| */ |
| public String getClusterKey() { |
| return clusterKey; |
| } |
| |
| /** |
| * Get the state of this peer |
| * @return atomic boolean that holds the status |
| */ |
| public AtomicBoolean getPeerEnabled() { |
| return peerEnabled; |
| } |
| |
| /** |
| * Get a list of all the addresses of all the region servers |
| * for this peer cluster |
| * @return list of addresses |
| */ |
| public List<HServerAddress> getRegionServers() { |
| return regionServers; |
| } |
| |
| /** |
| * Set the list of region servers for that peer |
| * @param regionServers list of addresses for the region servers |
| */ |
| public void setRegionServers(List<HServerAddress> regionServers) { |
| this.regionServers = regionServers; |
| } |
| |
| /** |
| * Get the ZK connection to this peer |
| * @return zk connection |
| */ |
| public ZooKeeperWatcher getZkw() { |
| return zkw; |
| } |
| |
| /** |
| * Get the identifier of this peer |
| * @return string representation of the id (short) |
| */ |
| public String getId() { |
| return id; |
| } |
| |
| /** |
| * Get the configuration object required to communicate with this peer |
| * @return configuration object |
| */ |
| public Configuration getConfiguration() { |
| return conf; |
| } |
| } |