001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.chaos;
019
020import java.net.InetAddress;
021import java.net.UnknownHostException;
022import org.apache.hadoop.conf.Configuration;
023import org.apache.hadoop.hbase.HConstants;
024import org.apache.yetus.audience.InterfaceAudience;
025
026/**
027 * ChaosUtils holds a bunch of useful functions like getting hostname and getting ZooKeeper quorum.
028 */
029@InterfaceAudience.Private
030public class ChaosUtils {
031
032  public static String getHostName() throws UnknownHostException {
033    return InetAddress.getLocalHost().getHostName();
034  }
035
036  public static String getZKQuorum(Configuration conf) {
037    String port = Integer.toString(conf.getInt(HConstants.ZOOKEEPER_CLIENT_PORT, 2181));
038    String[] serverHosts = conf.getStrings(HConstants.ZOOKEEPER_QUORUM, "localhost");
039    for (int i = 0; i < serverHosts.length; i++) {
040      serverHosts[i] = serverHosts[i] + ":" + port;
041    }
042    return String.join(",", serverHosts);
043  }
044
045}