SubscribeClosePublishThenConsumeTest xref

    1   /***
    2    *
    3    * Copyright 2004 Protique Ltd
    4    *
    5    * Licensed under the Apache License, Version 2.0 (the "License");
    6    * you may not use this file except in compliance with the License.
    7    * You may obtain a copy of the License at
    8    *
    9    * http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   *
    17   **/
    18  package org.codehaus.activemq.usecases;
    19
    20  import org.codehaus.activemq.ActiveMQConnectionFactory;
    21  import org.codehaus.activemq.TestSupport;
    22
    23  import javax.jms.Connection;
    24  import javax.jms.DeliveryMode;
    25  import javax.jms.Message;
    26  import javax.jms.MessageProducer;
    27  import javax.jms.Session;
    28  import javax.jms.TextMessage;
    29  import javax.jms.Topic;
    30  import javax.jms.TopicSubscriber;
    31
    32  /***
    33   * @author Paul Smith
    34   * @version $Revision: 1.4 $
    35   */
    36  public class SubscribeClosePublishThenConsumeTest extends TestSupport {
    37
    38      public void testDurableTopic() throws Exception {
    39          ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory();
    40          connectionFactory.setUseEmbeddedBroker(true);
    41
    42          String topicName = "TestTopic";
    43          String clientID = "MyClientID";
    44          String subscriberName = "MySubscriber";
    45
    46          // TODO remove this hack!
    47          //Connection dummy = connectionFactory.createConnection();
    48          //dummy.start();
    49
    50          Connection connection = connectionFactory.createConnection();
    51          connection.setClientID(clientID);
    52
    53          Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    54          Topic topic = session.createTopic(topicName);
    55
    56          // this should register a durable subscriber, we then close it to
    57          // test that we get messages from the producer later on
    58          TopicSubscriber subscriber = session.createDurableSubscriber(topic, subscriberName);
    59          connection.start();
    60
    61          topic = null;
    62          subscriber.close();
    63          subscriber = null;
    64
    65          session.close();
    66          session = null;
    67
    68          connection.close();
    69          connection = null;
    70
    71          // now create a new Connection, Session &  Producer, send some messages & then close
    72          connection = connectionFactory.createConnection();
    73          // connection.setClientID(clientID); // this should not be required for the Producer
    74          session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    75          topic = session.createTopic(topicName);
    76          MessageProducer producer = session.createProducer(topic);
    77          producer.setDeliveryMode(DeliveryMode.PERSISTENT);
    78          TextMessage textMessage = session.createTextMessage("Hello World");
    79          producer.send(textMessage);
    80          textMessage = null;
    81
    82          topic = null;
    83          session.close();
    84          session = null;
    85
    86          connection.close();
    87          connection = null;
    88
    89          // Now (re)register the Durable subscriber, setup a listener and wait for messages that should
    90          // have been published by the previous producer
    91
    92          connection = connectionFactory.createConnection();
    93          connection.setClientID(clientID);
    94          session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    95          topic = session.createTopic(topicName);
    96
    97          subscriber = session.createDurableSubscriber(topic, subscriberName);
    98          connection.start();
    99
    100         log.info("Started connection - now about to try receive the textMessage");
    101
    102         long time = System.currentTimeMillis();
    103         Message message = subscriber.receive(15000L);
    104         long elapsed = System.currentTimeMillis() - time;
    105
    106         log.info("Waited for: " + elapsed + " millis");
    107
    108         assertNotNull("Should have received the message we published by now", message);
    109         assertTrue("should be text textMessage", message instanceof TextMessage);
    110         textMessage = (TextMessage) message;
    111         assertEquals("Hello World", textMessage.getText());
    112     }
    113 }