| /* |
| * 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.rest.client; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * A list of 'host:port' addresses of HTTP servers operating as a single |
| * entity, for example multiple redundant web service gateways. |
| */ |
| public class Cluster { |
| protected List<String> nodes = |
| Collections.synchronizedList(new ArrayList<String>()); |
| protected String lastHost; |
| |
| /** |
| * Constructor |
| */ |
| public Cluster() {} |
| |
| /** |
| * Constructor |
| * @param nodes a list of service locations, in 'host:port' format |
| */ |
| public Cluster(List<String> nodes) { |
| nodes.addAll(nodes); |
| } |
| |
| /** |
| * @return true if no locations have been added, false otherwise |
| */ |
| public boolean isEmpty() { |
| return nodes.isEmpty(); |
| } |
| |
| /** |
| * Add a node to the cluster |
| * @param node the service location in 'host:port' format |
| */ |
| public Cluster add(String node) { |
| nodes.add(node); |
| return this; |
| } |
| |
| /** |
| * Add a node to the cluster |
| * @param name host name |
| * @param port service port |
| */ |
| public Cluster add(String name, int port) { |
| StringBuilder sb = new StringBuilder(); |
| sb.append(name); |
| sb.append(':'); |
| sb.append(port); |
| return add(sb.toString()); |
| } |
| |
| /** |
| * Remove a node from the cluster |
| * @param node the service location in 'host:port' format |
| */ |
| public Cluster remove(String node) { |
| nodes.remove(node); |
| return this; |
| } |
| |
| /** |
| * Remove a node from the cluster |
| * @param name host name |
| * @param port service port |
| */ |
| public Cluster remove(String name, int port) { |
| StringBuilder sb = new StringBuilder(); |
| sb.append(name); |
| sb.append(':'); |
| sb.append(port); |
| return remove(sb.toString()); |
| } |
| } |