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.ipc.protocolPB; 020 021import java.io.Closeable; 022import java.io.IOException; 023 024import org.apache.hadoop.ipc.ProtobufHelper; 025import org.apache.hadoop.ipc.ProtocolMetaInterface; 026import org.apache.hadoop.ipc.RPC; 027import org.apache.hadoop.ipc.RpcClientUtil; 028import org.apache.hadoop.ipc.RefreshCallQueueProtocol; 029import org.apache.hadoop.ipc.proto.RefreshCallQueueProtocolProtos.RefreshCallQueueRequestProto; 030import org.apache.hadoop.ipc.protocolPB.RefreshCallQueueProtocolPB; 031 032import com.google.protobuf.RpcController; 033import com.google.protobuf.ServiceException; 034 035public class RefreshCallQueueProtocolClientSideTranslatorPB implements 036 ProtocolMetaInterface, RefreshCallQueueProtocol, Closeable { 037 038 /** RpcController is not used and hence is set to null */ 039 private final static RpcController NULL_CONTROLLER = null; 040 private final RefreshCallQueueProtocolPB rpcProxy; 041 042 private final static RefreshCallQueueRequestProto 043 VOID_REFRESH_CALL_QUEUE_REQUEST = 044 RefreshCallQueueRequestProto.newBuilder().build(); 045 046 public RefreshCallQueueProtocolClientSideTranslatorPB( 047 RefreshCallQueueProtocolPB rpcProxy) { 048 this.rpcProxy = rpcProxy; 049 } 050 051 @Override 052 public void close() throws IOException { 053 RPC.stopProxy(rpcProxy); 054 } 055 056 @Override 057 public void refreshCallQueue() throws IOException { 058 try { 059 rpcProxy.refreshCallQueue(NULL_CONTROLLER, 060 VOID_REFRESH_CALL_QUEUE_REQUEST); 061 } catch (ServiceException se) { 062 throw ProtobufHelper.getRemoteException(se); 063 } 064 } 065 066 @Override 067 public boolean isMethodSupported(String methodName) throws IOException { 068 return RpcClientUtil.isMethodSupported(rpcProxy, 069 RefreshCallQueueProtocolPB.class, 070 RPC.RpcKind.RPC_PROTOCOL_BUFFER, 071 RPC.getProtocolVersion(RefreshCallQueueProtocolPB.class), 072 methodName); 073 } 074}