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.oozie.action.hadoop;
019    
020    import org.apache.hadoop.mapred.JobClient;
021    import org.apache.hadoop.mapred.JobConf;
022    import org.apache.hadoop.io.Text;
023    import org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier;
024    import org.apache.hadoop.security.token.Token;
025    import org.apache.oozie.action.hadoop.AuthHelper;
026    
027    import java.io.IOException;
028    
029    public class KerberosAuthHelper extends AuthHelper {
030    
031        public void set(JobClient jobClient, JobConf launcherJobConf) throws IOException, InterruptedException {
032            Token<DelegationTokenIdentifier> mrdt = jobClient.getDelegationToken(new Text("mr token"));
033            launcherJobConf.getCredentials().addToken(new Text("mr token"), mrdt);
034        }
035    
036    }