| /** |
| * 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.datatorrent.lib.testbench; |
| |
| import java.util.HashMap; |
| |
| import javax.jms.Connection; |
| import javax.jms.Destination; |
| import javax.jms.JMSException; |
| import javax.jms.MessageProducer; |
| import javax.jms.Session; |
| import javax.jms.TextMessage; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.activemq.ActiveMQConnectionFactory; |
| |
| /** |
| * This is the message generator outside of Malhar/Hadoop. This generates data |
| * and send to ActiveMQ message bus so that Malhar input adapter for ActiveMQ |
| * can receive it. |
| * |
| */ |
| public class ActiveMQMessageGenerator |
| { |
| private static final Logger logger = LoggerFactory |
| .getLogger(ActiveMQMessageGenerator.class); |
| private Connection connection; |
| private Session session; |
| private Destination destination; |
| private MessageProducer producer; |
| public HashMap<Integer, String> sendData = new HashMap<Integer, String>(); |
| public int sendCount = 0; |
| private int debugMessageCount = 0; |
| private String user = ""; |
| private String password = ""; |
| private String url = "tcp://localhost:61617"; |
| private int ackMode = Session.CLIENT_ACKNOWLEDGE; |
| private String subject = "TEST.FOO"; |
| private int messageSize = 255; |
| private long maximumSendMessages = 20; // 0 means unlimitted, this has to run |
| // in seperate thread for unlimitted |
| private boolean topic = false; |
| private boolean transacted = false; |
| private boolean verbose = false; |
| |
| public ActiveMQMessageGenerator() |
| { |
| } |
| |
| public void setDebugMessageCount(int count) |
| { |
| debugMessageCount = count; |
| } |
| |
| /** |
| * Setup connection, producer, consumer so on. |
| * |
| * @throws JMSException |
| */ |
| public void setupConnection() throws JMSException |
| { |
| // Create connection |
| ActiveMQConnectionFactory connectionFactory; |
| connectionFactory = new ActiveMQConnectionFactory(user, password, url); |
| |
| connection = connectionFactory.createConnection(); |
| connection.start(); |
| |
| // Create session |
| session = connection.createSession(transacted, ackMode); |
| |
| // Create destination |
| destination = topic ? session.createTopic(subject) : session |
| .createQueue(subject); |
| |
| // Create producer |
| producer = session.createProducer(destination); |
| } |
| |
| /** |
| * Generate message and send it to ActiveMQ message bus. |
| * |
| * @throws Exception |
| */ |
| public void sendMessage() throws Exception |
| { |
| for (int i = 1; i <= maximumSendMessages || maximumSendMessages == 0; i++) { |
| |
| // Silly message |
| String myMsg = "My TestMessage " + i; |
| // String myMsg = "My TestMessage " + i + " sent at " + new Date(); |
| |
| if (myMsg.length() > messageSize) { |
| myMsg = myMsg.substring(0, messageSize); |
| } |
| |
| TextMessage message = session.createTextMessage(myMsg); |
| |
| producer.send(message); |
| // store it for testing later |
| sendData.put(i, myMsg); |
| sendCount++; |
| |
| if (verbose) { |
| String msg = message.getText(); |
| if (msg.length() > messageSize) { |
| msg = msg.substring(0, messageSize) + "..."; |
| } |
| if (i <= debugMessageCount) { |
| System.out.println("[" + this + "] Sending message from generator: '" |
| + msg + "'"); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Close connection resources. |
| */ |
| public void closeConnection() |
| { |
| try { |
| producer.close(); |
| session.close(); |
| connection.close(); |
| } catch (JMSException ex) { |
| logger.debug(ex.getLocalizedMessage()); |
| } |
| } |
| } |