| /** |
| * 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.tools.protocolPB; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import org.apache.hadoop.ipc.ProtobufHelper; |
| import org.apache.hadoop.ipc.ProtocolMetaInterface; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.ipc.RpcClientUtil; |
| import org.apache.hadoop.tools.GetUserMappingsProtocol; |
| import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetGroupsForUserRequestProto; |
| import org.apache.hadoop.tools.proto.GetUserMappingsProtocolProtos.GetGroupsForUserResponseProto; |
| |
| import com.google.protobuf.RpcController; |
| import com.google.protobuf.ServiceException; |
| |
| public class GetUserMappingsProtocolClientSideTranslatorPB implements |
| ProtocolMetaInterface, GetUserMappingsProtocol, Closeable { |
| |
| /** RpcController is not used and hence is set to null */ |
| private final static RpcController NULL_CONTROLLER = null; |
| private final GetUserMappingsProtocolPB rpcProxy; |
| |
| public GetUserMappingsProtocolClientSideTranslatorPB( |
| GetUserMappingsProtocolPB rpcProxy) { |
| this.rpcProxy = rpcProxy; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| RPC.stopProxy(rpcProxy); |
| } |
| |
| @Override |
| public String[] getGroupsForUser(String user) throws IOException { |
| GetGroupsForUserRequestProto request = GetGroupsForUserRequestProto |
| .newBuilder().setUser(user).build(); |
| GetGroupsForUserResponseProto resp; |
| try { |
| resp = rpcProxy.getGroupsForUser(NULL_CONTROLLER, request); |
| } catch (ServiceException se) { |
| throw ProtobufHelper.getRemoteException(se); |
| } |
| return resp.getGroupsList().toArray(new String[resp.getGroupsCount()]); |
| } |
| |
| @Override |
| public boolean isMethodSupported(String methodName) throws IOException { |
| return RpcClientUtil.isMethodSupported(rpcProxy, |
| GetUserMappingsProtocolPB.class, RPC.RpcKind.RPC_PROTOCOL_BUFFER, |
| RPC.getProtocolVersion(GetUserMappingsProtocolPB.class), methodName); |
| } |
| } |