/*
* Copyright (c) 2013 Yahoo! Inc. All Rights Reserved.
*
* Licensed 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. See accompanying LICENSE file.
*/
package com.yahoo.storm.yarn;
import java.io.File;
import java.io.IOException;
import java.net.BindException;
import java.net.InetSocketAddress;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.zookeeper.server.NIOServerCnxn.Factory;
import org.apache.zookeeper.server.ZooKeeperServer;
public class EmbeddedZKServer {
private static final Log LOG = LogFactory.getLog(EmbeddedZKServer.class);
private Factory zkFactory;
private int zkport;
void start() throws IOException, InterruptedException {
LOG.info("Starting up embedded Zookeeper server");
File localfile = new File("./target/zookeeper.data");
ZooKeeperServer zkServer;
zkServer = new ZooKeeperServer(localfile, localfile, 2000);
for (zkport = 60000; true; zkport++)
try {
zkFactory = new Factory(new InetSocketAddress(zkport));
break;
} catch (BindException e) {
if (zkport == 65535) throw new IOException("Fail to find a port for Zookeeper server to bind");
}
LOG.info("Zookeeper port allocated:"+zkport);
zkFactory.startup(zkServer);
}
int port() {
return zkport;
}
void stop() {
LOG.info("shutdown embedded zookeeper server with port "+zkport);
zkFactory.shutdown();
zkFactory = null;
}
}