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.tools.protocolPB;
020    
021    import java.io.IOException;
022    
023    import org.apache.hadoop.tools.GetUserMappingsProtocol;
024    import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetGroupsForUserRequestProto;
025    import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetGroupsForUserResponseProto;
026    
027    import com.google.protobuf.RpcController;
028    import com.google.protobuf.ServiceException;
029    
030    public class GetUserMappingsProtocolServerSideTranslatorPB implements
031        GetUserMappingsProtocolPB {
032    
033      private final GetUserMappingsProtocol impl;
034    
035      public GetUserMappingsProtocolServerSideTranslatorPB(
036          GetUserMappingsProtocol impl) {
037        this.impl = impl;
038      }
039    
040      @Override
041      public GetGroupsForUserResponseProto getGroupsForUser(
042          RpcController controller, GetGroupsForUserRequestProto request)
043          throws ServiceException {
044        String[] groups;
045        try {
046          groups = impl.getGroupsForUser(request.getUser());
047        } catch (IOException e) {
048          throw new ServiceException(e);
049        }
050        GetGroupsForUserResponseProto.Builder builder = GetGroupsForUserResponseProto
051            .newBuilder();
052        for (String g : groups) {
053          builder.addGroups(g);
054        }
055        return builder.build();
056      }
057    }