blob: 46724470c07fae3b7887a5164d29f7dc03d0df2e [file] [log] [blame]
/*
* 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());
}
}