| /* |
| * |
| * 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.crail.namenode.rpc.tcp; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import java.util.LinkedList; |
| |
| import org.apache.crail.conf.CrailConfiguration; |
| import org.apache.crail.rpc.RpcClient; |
| import org.apache.crail.rpc.RpcConnection; |
| import org.slf4j.Logger; |
| |
| import com.ibm.narpc.NaRPCClientGroup; |
| import com.ibm.narpc.NaRPCEndpoint; |
| |
| public class TcpNameNodeClient implements RpcClient { |
| private NaRPCClientGroup<TcpNameNodeRequest, TcpNameNodeResponse> clientGroup; |
| private LinkedList<TcpRpcConnection> allConnections; |
| |
| public void init(CrailConfiguration conf, String[] strings) throws IOException { |
| try { |
| TcpRpcConstants.updateConstants(conf); |
| TcpRpcConstants.verify(); |
| this.clientGroup = new NaRPCClientGroup<TcpNameNodeRequest, TcpNameNodeResponse>(TcpRpcConstants.NAMENODE_TCP_QUEUEDEPTH, TcpRpcConstants.NAMENODE_TCP_MESSAGESIZE, true); |
| this.allConnections = new LinkedList<TcpRpcConnection>(); |
| } catch(Exception e){ |
| throw new IOException(e); |
| } |
| } |
| |
| public void printConf(Logger logger) { |
| TcpRpcConstants.printConf(logger); |
| } |
| |
| /* This function comes from RPCClient interface */ |
| public RpcConnection connect(InetSocketAddress address) throws IOException { |
| try { |
| NaRPCEndpoint<TcpNameNodeRequest, TcpNameNodeResponse> endpoint = clientGroup.createEndpoint(); |
| endpoint.connect(address); |
| TcpRpcConnection connection = new TcpRpcConnection(endpoint); |
| allConnections.add(connection); |
| return connection; |
| } catch(Exception e){ |
| throw new IOException(e); |
| } |
| } |
| |
| @Override |
| public void close() { |
| try { |
| for (TcpRpcConnection connection : allConnections){ |
| connection.close(); |
| } |
| } catch(Exception e){ |
| } |
| } |
| |
| } |