/**
* 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.zookeeper.server;
import java.io.File;
import java.io.IOException;
import javax.management.JMException;
import org.apache.log4j.Logger;
import org.apache.zookeeper.jmx.ManagedUtil;
import org.apache.zookeeper.server.persistence.FileTxnSnapLog;
/**
* This class starts and runs a standalone ZooKeeperServer.
*/
public class ZooKeeperServerMain {
private static final Logger LOG = Logger.getLogger(ZooKeeperServerMain.class);
private static final String USAGE = "Usage: ZooKeeperServerMain port datadir";
/*
* Start up the ZooKeeper server.
*
* @param args the port and data directory
*/
public static void main(String[] args) {
try {
ManagedUtil.registerLog4jMBeans();
} catch (JMException e) {
LOG.warn("Unable to register log4j JMX control", e);
}
try {
ServerConfig.parse(args);
} catch(Exception e) {
LOG.fatal("Error in config", e);
LOG.info(USAGE);
System.exit(2);
}
runStandalone(new ZooKeeperServer.Factory() {
public NIOServerCnxn.Factory createConnectionFactory() throws IOException {
return new NIOServerCnxn.Factory(ServerConfig.getClientPort());
}
public ZooKeeperServer createServer() throws IOException {
// create a file logger url from the command line args
ZooKeeperServer zks = new ZooKeeperServer();
FileTxnSnapLog ftxn = new FileTxnSnapLog(new
File(ServerConfig.getDataLogDir()),
new File(ServerConfig.getDataDir()));
zks.setTxnLogFactory(ftxn);
return zks;
}
});
}
public static void runStandalone(ZooKeeperServer.Factory serverFactory) {
try {
// Note that this thread isn't going to be doing anything else,
// so rather than spawning another thread, we will just call
// run() in this thread.
ZooKeeperServer zk = serverFactory.createServer();
zk.startup();
NIOServerCnxn.Factory cnxnFactory =
serverFactory.createConnectionFactory();
cnxnFactory.setZooKeeperServer(zk);
cnxnFactory.join();
if (zk.isRunning()) {
zk.shutdown();
}
} catch (Exception e) {
LOG.fatal("Unexpected exception",e);
}
System.exit(0);
}
}