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;
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.ApplicationMasterProtocolPB;
032    
033    @Public
034    @Stable
035    public class SchedulerSecurityInfo extends SecurityInfo {
036    
037      @Override
038      public KerberosInfo getKerberosInfo(Class<?> protocol, Configuration conf) {
039        return null;
040      }
041    
042      @Override
043      public TokenInfo getTokenInfo(Class<?> protocol, Configuration conf) {
044        if (!protocol.equals(ApplicationMasterProtocolPB.class)) {
045          return null;
046        }
047        return new TokenInfo() {
048    
049          @Override
050          public Class<? extends Annotation> annotationType() {
051            return null;
052          }
053    
054          @Override
055          public Class<? extends TokenSelector<? extends TokenIdentifier>>
056              value() {
057            return AMRMTokenSelector.class;
058          }
059        };
060      }
061    }