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
019package org.apache.hadoop.tools.protocolPB;
020
021import java.io.IOException;
022
023import org.apache.hadoop.tools.GetUserMappingsProtocol;
024import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetGroupsForUserRequestProto;
025import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetGroupsForUserResponseProto;
026
027import com.google.protobuf.RpcController;
028import com.google.protobuf.ServiceException;
029
030public 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}