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     */
018    package org.apache.hadoop.hdfs.tools;
019    
020    import java.io.IOException;
021    import java.io.PrintStream;
022    import java.net.InetSocketAddress;
023    
024    import org.apache.hadoop.conf.Configuration;
025    import org.apache.hadoop.hdfs.HdfsConfiguration;
026    import org.apache.hadoop.hdfs.server.namenode.NameNode;
027    import org.apache.hadoop.tools.GetGroupsBase;
028    import 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     */
034    public 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    }