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    
019    package org.apache.hadoop.yarn.security.client;
020    
021    import java.lang.annotation.Annotation;
022    
023    import org.apache.hadoop.classification.InterfaceAudience.Public;
024    import org.apache.hadoop.classification.InterfaceStability.Stable;
025    import org.apache.hadoop.conf.Configuration;
026    import org.apache.hadoop.security.KerberosInfo;
027    import org.apache.hadoop.security.SecurityInfo;
028    import org.apache.hadoop.security.token.TokenIdentifier;
029    import org.apache.hadoop.security.token.TokenInfo;
030    import org.apache.hadoop.security.token.TokenSelector;
031    import org.apache.hadoop.yarn.api.ApplicationClientProtocolPB;
032    import org.apache.hadoop.yarn.conf.YarnConfiguration;
033    
034    @Public
035    @Stable
036    public class ClientRMSecurityInfo extends SecurityInfo {
037    
038      @Override
039      public KerberosInfo getKerberosInfo(Class<?> protocol, Configuration conf) {
040        if (!protocol
041            .equals(ApplicationClientProtocolPB.class)) {
042          return null;
043        }
044        return new KerberosInfo() {
045    
046          @Override
047          public Class<? extends Annotation> annotationType() {
048            return null;
049          }
050    
051          @Override
052          public String serverPrincipal() {
053            return YarnConfiguration.RM_PRINCIPAL;
054          }
055    
056          @Override
057          public String clientPrincipal() {
058            return null;
059          }
060        };
061      }
062    
063      @Override
064      public TokenInfo getTokenInfo(Class<?> protocol, Configuration conf) {
065        if (!protocol
066            .equals(ApplicationClientProtocolPB.class)) {
067          return null;
068        }
069        return new TokenInfo() {
070    
071          @Override
072          public Class<? extends Annotation> annotationType() {
073            return null;
074          }
075    
076          @Override
077          public Class<? extends TokenSelector<? extends TokenIdentifier>>
078              value() {
079            return RMDelegationTokenSelector.class;
080          }
081        };
082      }
083    }