| /* |
| * 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 com.alibaba.dubbo.examples.heartbeat; |
| |
| import com.alibaba.dubbo.common.Constants; |
| import com.alibaba.dubbo.common.URL; |
| import com.alibaba.dubbo.common.utils.NetUtils; |
| import com.alibaba.dubbo.remoting.Transporters; |
| import com.alibaba.dubbo.remoting.exchange.ExchangeClient; |
| import com.alibaba.dubbo.remoting.exchange.ExchangeHandler; |
| import com.alibaba.dubbo.remoting.exchange.ExchangeServer; |
| import com.alibaba.dubbo.remoting.exchange.support.ExchangeHandlerAdapter; |
| import com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeClient; |
| import com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeServer; |
| |
| public class HeartbeatClient { |
| |
| private static final URL serverUrl = URL.valueOf("netty://" + NetUtils.getLocalHost() + ":9999") |
| .addParameter(Constants.CODEC_KEY, "exchange"); |
| |
| private static final ExchangeHandler handler = new ExchangeHandlerAdapter() { |
| |
| }; |
| |
| private static ExchangeServer exchangeServer; |
| |
| private static volatile boolean serverStarted = false; |
| |
| public static void main(String[] args) throws Exception { |
| |
| final HeartBeatExchangeHandler serverHandler = new HeartBeatExchangeHandler(handler); |
| |
| Thread serverThread = new Thread(new Runnable() { |
| |
| @Override |
| public void run() { |
| try { |
| exchangeServer = new HeaderExchangeServer( |
| Transporters.bind(serverUrl, serverHandler)); |
| serverStarted = true; |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| }); |
| |
| serverThread.setDaemon(true); |
| serverThread.start(); |
| |
| while (!serverStarted) { |
| Thread.sleep(1000); |
| } |
| |
| URL url = serverUrl.addParameter(Constants.HEARTBEAT_KEY, 1000); |
| |
| HeartBeatExchangeHandler clientHandler = new HeartBeatExchangeHandler(handler); |
| ExchangeClient exchangeClient = new HeaderExchangeClient(Transporters.connect(url, clientHandler),true); |
| |
| for (int i = 0; i < 10; i++) { |
| Thread.sleep(1000); |
| System.out.print("."); |
| } |
| |
| System.out.println(); |
| |
| if (serverHandler.getHeartBeatCount() > 0) { |
| System.out.printf("Server receives %d heartbeats", |
| serverHandler.getHeartBeatCount()); |
| } else { |
| throw new Exception("Client heartbeat does not work."); |
| } |
| |
| exchangeClient.close(); |
| exchangeServer.close(); |
| |
| } |
| |
| } |