| /** |
| * 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.ha.protocolPB; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| import javax.net.SocketFactory; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.ha.ZKFCProtocol; |
| import org.apache.hadoop.ha.proto.ZKFCProtocolProtos.CedeActiveRequestProto; |
| import org.apache.hadoop.ha.proto.ZKFCProtocolProtos.GracefulFailoverRequestProto; |
| import org.apache.hadoop.ipc.ProtobufHelper; |
| import org.apache.hadoop.ipc.ProtobufRpcEngine; |
| import org.apache.hadoop.ipc.ProtocolTranslator; |
| import org.apache.hadoop.ipc.RPC; |
| import org.apache.hadoop.security.AccessControlException; |
| import org.apache.hadoop.security.UserGroupInformation; |
| |
| import com.google.protobuf.RpcController; |
| import com.google.protobuf.ServiceException; |
| |
| |
| public class ZKFCProtocolClientSideTranslatorPB implements |
| ZKFCProtocol, Closeable, ProtocolTranslator { |
| |
| private final static RpcController NULL_CONTROLLER = null; |
| private final ZKFCProtocolPB rpcProxy; |
| |
| public ZKFCProtocolClientSideTranslatorPB( |
| InetSocketAddress addr, Configuration conf, |
| SocketFactory socketFactory, int timeout) throws IOException { |
| RPC.setProtocolEngine(conf, ZKFCProtocolPB.class, |
| ProtobufRpcEngine.class); |
| rpcProxy = RPC.getProxy(ZKFCProtocolPB.class, |
| RPC.getProtocolVersion(ZKFCProtocolPB.class), addr, |
| UserGroupInformation.getCurrentUser(), conf, socketFactory, timeout); |
| } |
| |
| @Override |
| public void cedeActive(int millisToCede) throws IOException, |
| AccessControlException { |
| try { |
| CedeActiveRequestProto req = CedeActiveRequestProto.newBuilder() |
| .setMillisToCede(millisToCede) |
| .build(); |
| rpcProxy.cedeActive(NULL_CONTROLLER, req); |
| } catch (ServiceException e) { |
| throw ProtobufHelper.getRemoteException(e); |
| } |
| } |
| |
| @Override |
| public void gracefulFailover() throws IOException, AccessControlException { |
| try { |
| rpcProxy.gracefulFailover(NULL_CONTROLLER, |
| GracefulFailoverRequestProto.getDefaultInstance()); |
| } catch (ServiceException e) { |
| throw ProtobufHelper.getRemoteException(e); |
| } |
| } |
| |
| |
| @Override |
| public void close() { |
| RPC.stopProxy(rpcProxy); |
| } |
| |
| @Override |
| public Object getUnderlyingProxyObject() { |
| return rpcProxy; |
| } |
| } |