| /** |
| * 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. |
| */ |
| import java.util.Arrays; |
| |
| import javax.jms.Connection; |
| import javax.jms.JMSException; |
| import javax.jms.Message; |
| import javax.jms.MessageConsumer; |
| import javax.jms.MessageListener; |
| import javax.jms.MessageProducer; |
| import javax.jms.Session; |
| import javax.jms.TextMessage; |
| import javax.jms.Topic; |
| |
| import org.apache.activemq.ActiveMQConnectionFactory; |
| |
| /** |
| * Use in conjunction with TopicPublisher to test the performance of ActiveMQ |
| * Topics. |
| */ |
| public class TopicListener implements MessageListener { |
| |
| private Connection connection; |
| private MessageProducer producer; |
| private Session session; |
| private int count; |
| private long start; |
| private Topic topic; |
| private Topic control; |
| |
| private String url = "tcp://localhost:61616"; |
| |
| public static void main(String[] argv) throws Exception { |
| TopicListener l = new TopicListener(); |
| String[] unknown = CommandLineSupport.setOptions(l, argv); |
| if (unknown.length > 0) { |
| System.out.println("Unknown options: " + Arrays.toString(unknown)); |
| System.exit(-1); |
| } |
| l.run(); |
| } |
| |
| public void run() throws JMSException { |
| ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(url); |
| connection = factory.createConnection(); |
| session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); |
| topic = session.createTopic("topictest.messages"); |
| control = session.createTopic("topictest.control"); |
| |
| MessageConsumer consumer = session.createConsumer(topic); |
| consumer.setMessageListener(this); |
| |
| connection.start(); |
| |
| producer = session.createProducer(control); |
| System.out.println("Waiting for messages..."); |
| } |
| |
| private static boolean checkText(Message m, String s) { |
| try { |
| return m instanceof TextMessage && ((TextMessage)m).getText().equals(s); |
| } catch (JMSException e) { |
| e.printStackTrace(System.out); |
| return false; |
| } |
| } |
| |
| public void onMessage(Message message) { |
| if (checkText(message, "SHUTDOWN")) { |
| |
| try { |
| connection.close(); |
| } catch (Exception e) { |
| e.printStackTrace(System.out); |
| } |
| |
| } else if (checkText(message, "REPORT")) { |
| // send a report: |
| try { |
| long time = System.currentTimeMillis() - start; |
| String msg = "Received " + count + " in " + time + "ms"; |
| producer.send(session.createTextMessage(msg)); |
| } catch (Exception e) { |
| e.printStackTrace(System.out); |
| } |
| count = 0; |
| |
| } else { |
| |
| if (count == 0) { |
| start = System.currentTimeMillis(); |
| } |
| |
| if (++count % 1000 == 0) { |
| System.out.println("Received " + count + " messages."); |
| } |
| } |
| } |
| |
| public void setUrl(String url) { |
| this.url = url; |
| } |
| |
| } |