| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.hdfs.protocolPB; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.hdfs.protocol.proto.GetUserMappingsProtocolProtos.GetGroupsForUserRequestProto; |
| import org.apache.hadoop.hdfs.protocol.proto.GetUserMappingsProtocolProtos.GetGroupsForUserResponseProto; |
| import org.apache.hadoop.hdfs.protocolR23Compatible.ProtocolSignatureWritable; |
| import org.apache.hadoop.ipc.ProtocolSignature; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.tools.GetUserMappingsProtocol; |
| |
| import com.google.protobuf.RpcController; |
| import com.google.protobuf.ServiceException; |
| |
| public class GetUserMappingsProtocolServerSideTranslatorPB implements |
| GetUserMappingsProtocolPB { |
| |
| private final GetUserMappingsProtocol impl; |
| |
| public GetUserMappingsProtocolServerSideTranslatorPB( |
| GetUserMappingsProtocol impl) { |
| this.impl = impl; |
| } |
| |
| @Override |
| public long getProtocolVersion(String protocol, long clientVersion) |
| throws IOException { |
| return RPC.getProtocolVersion(GetUserMappingsProtocolPB.class); |
| } |
| |
| @Override |
| public ProtocolSignature getProtocolSignature(String protocol, |
| long clientVersion, int clientMethodsHash) throws IOException { |
| /** |
| * Don't forward this to the server. The protocol version and signature is |
| * that of {@link GetUserMappingsProtocol} |
| */ |
| if (!protocol.equals(RPC |
| .getProtocolName(GetUserMappingsProtocolPB.class))) { |
| throw new IOException("Namenode Serverside implements " |
| + RPC.getProtocolName(GetUserMappingsProtocolPB.class) |
| + ". The following requested protocol is unknown: " + protocol); |
| } |
| |
| return ProtocolSignature.getProtocolSignature(clientMethodsHash, |
| RPC.getProtocolVersion(GetUserMappingsProtocolPB.class), |
| GetUserMappingsProtocolPB.class); |
| } |
| |
| @Override |
| public ProtocolSignatureWritable getProtocolSignature2(String protocol, |
| long clientVersion, int clientMethodsHash) throws IOException { |
| /** |
| * Don't forward this to the server. The protocol version and signature is |
| * that of {@link GetUserMappingsProtocolPB} |
| */ |
| return ProtocolSignatureWritable.convert(this.getProtocolSignature( |
| protocol, clientVersion, clientMethodsHash)); |
| } |
| |
| @Override |
| public GetGroupsForUserResponseProto getGroupsForUser( |
| RpcController controller, GetGroupsForUserRequestProto request) |
| throws ServiceException { |
| String[] groups; |
| try { |
| groups = impl.getGroupsForUser(request.getUser()); |
| } catch (IOException e) { |
| throw new ServiceException(e); |
| } |
| GetGroupsForUserResponseProto.Builder builder = GetGroupsForUserResponseProto |
| .newBuilder(); |
| for (String g : groups) { |
| builder.addGroups(g); |
| } |
| return builder.build(); |
| } |
| } |