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.hdfs.tools;
019
020import java.io.IOException;
021import java.io.PrintStream;
022import java.net.InetSocketAddress;
023
024import org.apache.hadoop.conf.Configuration;
025import org.apache.hadoop.hdfs.HdfsConfiguration;
026import org.apache.hadoop.hdfs.server.namenode.NameNode;
027import org.apache.hadoop.tools.GetGroupsBase;
028import org.apache.hadoop.util.ToolRunner;
029
030/**
031 * HDFS implementation of a tool for getting the groups which a given user
032 * belongs to.
033 */
034public class GetGroups extends GetGroupsBase {
035
036  static{
037    HdfsConfiguration.init();
038  }
039
040  
041  GetGroups(Configuration conf) {
042    super(conf);
043  }
044
045  GetGroups(Configuration conf, PrintStream out) {
046    super(conf, out);
047  }
048  
049  @Override
050  protected InetSocketAddress getProtocolAddress(Configuration conf)
051      throws IOException {
052    return NameNode.getAddress(conf);
053  }
054
055  public static void main(String[] argv) throws Exception {
056    int res = ToolRunner.run(new GetGroups(new HdfsConfiguration()), argv);
057    System.exit(res);
058  }
059}