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.admin;
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.TokenInfo;
029    import org.apache.hadoop.yarn.conf.YarnConfiguration;
030    import org.apache.hadoop.yarn.server.api.ResourceManagerAdministrationProtocolPB;
031    
032    @Public
033    @Stable
034    public class AdminSecurityInfo extends SecurityInfo {
035    
036      @Override
037      public KerberosInfo getKerberosInfo(Class<?> protocol, Configuration conf) {
038        if (!protocol.equals(ResourceManagerAdministrationProtocolPB.class)) {
039          return null;
040        }
041        return new KerberosInfo() {
042    
043          @Override
044          public Class<? extends Annotation> annotationType() {
045            return null;
046          }
047    
048          @Override
049          public String serverPrincipal() {
050            return YarnConfiguration.RM_PRINCIPAL;
051          }
052    
053          @Override
054          public String clientPrincipal() {
055            return null;
056          }
057        };
058      }
059    
060      @Override
061      public TokenInfo getTokenInfo(Class<?> protocol, Configuration conf) {
062        return null;
063      }
064    
065    }