| /* |
| * 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.giraph.zk; |
| |
| import org.apache.commons.cli.CommandLine; |
| import org.apache.commons.cli.CommandLineParser; |
| import org.apache.commons.cli.HelpFormatter; |
| import org.apache.commons.cli.Options; |
| import org.apache.commons.cli.PosixParser; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.util.Tool; |
| import org.apache.hadoop.util.ToolRunner; |
| import org.apache.zookeeper.CreateMode; |
| import org.apache.zookeeper.WatchedEvent; |
| import org.apache.zookeeper.Watcher; |
| import org.apache.zookeeper.ZooDefs; |
| |
| import static java.lang.System.out; |
| |
| /** A utility class to be used to create a ZooKeeper node */ |
| public class ZooKeeperNodeCreator implements Tool, Watcher { |
| /** The configuration */ |
| private Configuration conf; |
| |
| @Override |
| public void setConf(Configuration conf) { |
| this.conf = conf; |
| } |
| |
| @Override |
| public Configuration getConf() { |
| return conf; |
| } |
| |
| @Override |
| public int run(String[] args) throws Exception { |
| Options options = new Options(); |
| options.addOption("zk", "zkServer", true, |
| "List of host:port ZooKeeper servers"); |
| options.addOption("n", "zkNode", true, |
| "ZooKeeper node to create"); |
| |
| HelpFormatter formatter = new HelpFormatter(); |
| if (args.length == 0) { |
| formatter.printHelp(getClass().getName(), options, true); |
| return 0; |
| } |
| |
| CommandLineParser parser = new PosixParser(); |
| CommandLine cmd = parser.parse(options, args); |
| |
| ZooKeeperExt zkExt = new ZooKeeperExt(cmd.getOptionValue("zkServer"), |
| 30 * 1000, 5, 1000, this); |
| zkExt.createExt(cmd.getOptionValue("zkNode"), new byte[0], |
| ZooDefs.Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT, true); |
| return 0; |
| } |
| |
| @Override |
| public void process(WatchedEvent event) { |
| out.println("process: ZK event received: " + event); |
| } |
| |
| /** |
| * Entry point from shell script |
| * @param args the command line arguments |
| */ |
| public static void main(String[] args) throws Exception { |
| System.exit(ToolRunner.run(new ZooKeeperNodeCreator(), args)); |
| } |
| } |