Example usage for javax.jms Session createConsumer

List of usage examples for javax.jms Session createConsumer

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Introduction

In this page you can find the example usage for javax.jms Session createConsumer.

Prototype


MessageConsumer createConsumer(Destination destination) throws JMSException;

Source Link

Document

Creates a MessageConsumer for the specified destination.

Usage

From source file:org.apache.activemq.apollo.JmsQueueBrowserTest.java

public void testBrowseReceive() throws Exception {
    Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    ActiveMQQueue destination = new ActiveMQQueue("TEST");

    connection.start();//from  w ww .  j ava2s .c o m

    Message[] outbound = new Message[] { session.createTextMessage("First Message"),
            session.createTextMessage("Second Message"), session.createTextMessage("Third Message") };

    MessageProducer producer = session.createProducer(destination);
    producer.send(outbound[0]);

    // create browser first
    QueueBrowser browser = session.createBrowser((Queue) destination);
    Enumeration enumeration = browser.getEnumeration();

    // create consumer
    MessageConsumer consumer = session.createConsumer(destination);

    // browse the first message
    assertTrue("should have received the first message", enumeration.hasMoreElements());
    assertEquals(outbound[0], (Message) enumeration.nextElement());

    // Receive the first message.
    assertEquals(outbound[0], consumer.receive(1000));
    consumer.close();
    browser.close();
    producer.close();

}

From source file:org.apache.qpid.systest.management.jmx.QueueManagementTest.java

private void startAsyncConsumerOn(Destination queue, Connection asyncConnection,
        final CountDownLatch requiredNumberOfMessagesRead, final AtomicInteger totalConsumed) throws Exception {
    Session session = asyncConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    MessageConsumer consumer = session.createConsumer(queue);
    consumer.setMessageListener(new MessageListener() {

        @Override/*  w  w  w.j av  a2 s.  c  o m*/
        public void onMessage(Message arg0) {
            totalConsumed.incrementAndGet();
            requiredNumberOfMessagesRead.countDown();
        }
    });
}

From source file:org.apache.james.queue.activemq.ActiveMQMailQueue.java

/**
 * Try to use ActiveMQ StatisticsPlugin to get size and if that fails
 * fallback to {@link JMSMailQueue#getSize()}
 *//*from w  w  w.  ja v a 2s.c  o  m*/
@Override
public long getSize() throws MailQueueException {

    Connection connection = null;
    Session session = null;
    MessageConsumer consumer = null;
    MessageProducer producer = null;
    TemporaryQueue replyTo = null;
    long size = -1;

    try {
        connection = connectionFactory.createConnection();
        connection.start();

        session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        replyTo = session.createTemporaryQueue();
        consumer = session.createConsumer(replyTo);

        Queue myQueue = session.createQueue(queuename);
        producer = session.createProducer(null);

        String queueName = "ActiveMQ.Statistics.Destination." + myQueue.getQueueName();
        Queue query = session.createQueue(queueName);

        Message msg = session.createMessage();
        msg.setJMSReplyTo(replyTo);
        producer.send(query, msg);
        MapMessage reply = (MapMessage) consumer.receive(2000);
        if (reply != null && reply.itemExists("size")) {
            try {
                size = reply.getLong("size");
                return size;
            } catch (NumberFormatException e) {
                // if we hit this we can't calculate the size so just catch
                // it
            }
        }

    } catch (Exception e) {
        throw new MailQueueException("Unable to remove mails", e);

    } finally {

        if (consumer != null) {

            try {
                consumer.close();
            } catch (JMSException e1) {
                e1.printStackTrace();
                // ignore on rollback
            }
        }

        if (producer != null) {

            try {
                producer.close();
            } catch (JMSException e1) {
                // ignore on rollback
            }
        }

        if (replyTo != null) {
            try {

                // we need to delete the temporary queue to be sure we will
                // free up memory if thats not done and a pool is used
                // its possible that we will register a new mbean in jmx for
                // every TemporaryQueue which will never get unregistered
                replyTo.delete();
            } catch (JMSException e) {
            }
        }
        try {
            if (session != null)
                session.close();
        } catch (JMSException e1) {
            // ignore here
        }

        try {
            if (connection != null)
                connection.close();
        } catch (JMSException e1) {
            // ignore here
        }
    }

    // if we came to this point we should just fallback to super method
    return super.getSize();
}

From source file:org.apache.activemq.apollo.JmsQueueBrowserTest.java

public void testQueueBrowserWith2Consumers() throws Exception {
    final int numMessages = 1000;
    //        connection.setAlwaysSyncSend(false);
    Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
    ActiveMQQueue destination = new ActiveMQQueue("TEST");
    ActiveMQQueue destinationPrefetch10 = new ActiveMQQueue("TEST?jms.prefetchSize=10");
    ActiveMQQueue destinationPrefetch1 = new ActiveMQQueue("TEST?jms.prefetchsize=1");
    connection.start();//w w w .j  a v  a 2 s .  c o m

    Connection connection2 = factory.createConnection(userName, password);
    connection2.start();
    connections.add(connection2);
    Session session2 = connection2.createSession(false, Session.AUTO_ACKNOWLEDGE);

    MessageProducer producer = session.createProducer(destination);
    MessageConsumer consumer = session.createConsumer(destinationPrefetch10);

    for (int i = 0; i < numMessages; i++) {
        TextMessage message = session.createTextMessage("Message: " + i);
        producer.send(message);
    }

    QueueBrowser browser = session2.createBrowser(destinationPrefetch1);
    Enumeration<Message> browserView = browser.getEnumeration();

    List<Message> messages = new ArrayList<Message>();
    for (int i = 0; i < numMessages; i++) {
        Message m1 = consumer.receive(5000);
        assertNotNull("m1 is null for index: " + i, m1);
        messages.add(m1);
    }

    int i = 0;
    for (; i < numMessages && browserView.hasMoreElements(); i++) {
        Message m1 = messages.get(i);
        Message m2 = browserView.nextElement();
        assertNotNull("m2 is null for index: " + i, m2);
        assertEquals(m1.getJMSMessageID(), m2.getJMSMessageID());
    }

    // currently browse max page size is ignored for a queue browser consumer
    // only guarantee is a page size - but a snapshot of pagedinpending is
    // used so it is most likely more
    assertTrue("got at least our expected minimum in the browser: ", i > 200);

    assertFalse("nothing left in the browser", browserView.hasMoreElements());
    assertNull("consumer finished", consumer.receiveNoWait());
}

From source file:org.sakaiproject.nakamura.email.outgoing.LiteOutgoingEmailMessageListener.java

@Activate
@Modified/* www.ja v a 2  s.co  m*/
protected void activate(ComponentContext ctx) {
    @SuppressWarnings("rawtypes")
    Dictionary props = ctx.getProperties();

    Integer _maxRetries = PropertiesUtil.toInteger(props.get(MAX_RETRIES), -1);
    if (_maxRetries > -1) {
        if (diff(maxRetries, _maxRetries)) {
            maxRetries = _maxRetries;
        }
    } else {
        LOGGER.error("Maximum times to retry messages not set.");
    }

    Integer _retryInterval = PropertiesUtil.toInteger(props.get(RETRY_INTERVAL), -1);
    if (_retryInterval > -1) {
        if (diff(_retryInterval, retryInterval)) {
            retryInterval = _retryInterval;
        }
    } else {
        LOGGER.error("SMTP retry interval not set.");
    }

    if (maxRetries * retryInterval < 4320 /* minutes in 3 days */) {
        LOGGER.warn("SMTP retry window is very short.");
    }

    Integer _smtpPort = PropertiesUtil.toInteger(props.get(SMTP_PORT), -1);
    boolean validPort = _smtpPort != null && _smtpPort >= 0 && _smtpPort <= 65535;
    if (validPort) {
        if (diff(smtpPort, _smtpPort)) {
            smtpPort = _smtpPort;
        }
    } else {
        LOGGER.error("Invalid port set for SMTP");
    }

    String _smtpServer = PropertiesUtil.toString(props.get(SMTP_SERVER), "");
    if (!StringUtils.isBlank(_smtpServer)) {
        if (diff(smtpServer, _smtpServer)) {
            smtpServer = _smtpServer;
        }
    } else {
        LOGGER.error("No SMTP server set");
    }

    String _replyAsAddress = PropertiesUtil.toString(props.get(REPLY_AS_ADDRESS), "");
    if (!StringUtils.isBlank(_replyAsAddress)) {
        if (diff(replyAsAddress, _replyAsAddress)) {
            replyAsAddress = _replyAsAddress;
        }
    } else {
        LOGGER.error("No reply-as email address set");
    }

    String _replyAsName = PropertiesUtil.toString(props.get(REPLY_AS_NAME), "");
    if (!StringUtils.isBlank(_replyAsName)) {
        if (diff(replyAsName, _replyAsName)) {
            replyAsName = _replyAsName;
        }
    } else {
        LOGGER.error("No reply-as email name set");
    }

    useTls = PropertiesUtil.toBoolean(props.get(SMTP_USE_TLS), false);
    useSsl = PropertiesUtil.toBoolean(props.get(SMTP_USE_SSL), false);
    authUser = PropertiesUtil.toString(props.get(SMTP_AUTH_USER), "");
    authPass = PropertiesUtil.toString(props.get(SMTP_AUTH_PASS), "");

    try {
        connection = connFactoryService.getDefaultConnectionFactory().createConnection();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Queue dest = session.createQueue(QUEUE_NAME);
        MessageConsumer consumer = session.createConsumer(dest);
        consumer.setMessageListener(this);
        connection.start();
    } catch (JMSException e) {
        LOGGER.error(e.getMessage(), e);
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e1) {
            }
        }
    }
}

From source file:org.wso2.carbon.esb.scenario.test.common.jms.ActiveMQJMSClient.java

/**
 * Function to retrieve message from specified message queue
 *
 * @param queueName Name of the queue//from  w ww .jav a 2 s .  c  o  m
 * @param timeout Timeout value (in milliseconds)
 * @return Retrieved message from the queue
 * @throws JMSException if error occurred
 */
public Message consumeMessageFromQueue(String queueName, long timeout) throws JMSException {

    Connection connection = null;
    Session session = null;
    MessageConsumer consumer = null;

    try {
        // Create a ConnectionFactory
        ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(brokerUrl);

        // Create a Connection
        connection = connectionFactory.createConnection();
        connection.start();
        connection.setExceptionListener(this);

        // Create a Session
        session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

        // Create the destination (Topic or Queue)
        Destination destination = session.createQueue(queueName);

        // Create a MessageConsumer from the Session to the Topic or Queue
        consumer = session.createConsumer(destination);

        // Wait for a message
        return consumer.receive(timeout);

    } finally {
        if (consumer != null) {
            consumer.close();
        }
        if (session != null) {
            session.close();
        }
        if (connection != null) {
            connection.close();
        }
    }
}

From source file:Vendor.java

public void run() {
    ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory(user, password, url);
    Session session = null;
    Destination orderQueue;//from   w w  w. j a va2  s  .c o  m
    Destination monitorOrderQueue;
    Destination storageOrderQueue;
    TemporaryQueue vendorConfirmQueue;
    MessageConsumer orderConsumer = null;
    MessageProducer monitorProducer = null;
    MessageProducer storageProducer = null;

    try {
        Connection connection = connectionFactory.createConnection();

        session = connection.createSession(true, Session.SESSION_TRANSACTED);
        orderQueue = session.createQueue("VendorOrderQueue");
        monitorOrderQueue = session.createQueue("MonitorOrderQueue");
        storageOrderQueue = session.createQueue("StorageOrderQueue");

        orderConsumer = session.createConsumer(orderQueue);
        monitorProducer = session.createProducer(monitorOrderQueue);
        storageProducer = session.createProducer(storageOrderQueue);

        Connection asyncconnection = connectionFactory.createConnection();
        asyncSession = asyncconnection.createSession(true, Session.SESSION_TRANSACTED);

        vendorConfirmQueue = asyncSession.createTemporaryQueue();
        MessageConsumer confirmConsumer = asyncSession.createConsumer(vendorConfirmQueue);
        confirmConsumer.setMessageListener(this);

        asyncconnection.start();

        connection.start();

        while (true) {
            Order order = null;
            try {
                Message inMessage = orderConsumer.receive();
                MapMessage message;
                if (inMessage instanceof MapMessage) {
                    message = (MapMessage) inMessage;

                } else {
                    // end of stream
                    Message outMessage = session.createMessage();
                    outMessage.setJMSReplyTo(vendorConfirmQueue);
                    monitorProducer.send(outMessage);
                    storageProducer.send(outMessage);
                    session.commit();
                    break;
                }

                // Randomly throw an exception in here to simulate a Database error
                // and trigger a rollback of the transaction
                if (new Random().nextInt(3) == 0) {
                    throw new JMSException("Simulated Database Error.");
                }

                order = new Order(message);

                MapMessage orderMessage = session.createMapMessage();
                orderMessage.setJMSReplyTo(vendorConfirmQueue);
                orderMessage.setInt("VendorOrderNumber", order.getOrderNumber());
                int quantity = message.getInt("Quantity");
                System.out.println("Vendor: Retailer ordered " + quantity + " " + message.getString("Item"));

                orderMessage.setInt("Quantity", quantity);
                orderMessage.setString("Item", "Monitor");
                monitorProducer.send(orderMessage);
                System.out.println("Vendor: ordered " + quantity + " Monitor(s)");

                orderMessage.setString("Item", "HardDrive");
                storageProducer.send(orderMessage);
                System.out.println("Vendor: ordered " + quantity + " Hard Drive(s)");

                session.commit();
                System.out.println("Vendor: Comitted Transaction 1");

            } catch (JMSException e) {
                System.out.println("Vendor: JMSException Occured: " + e.getMessage());
                e.printStackTrace();
                session.rollback();
                System.out.println("Vendor: Rolled Back Transaction.");
            }
        }

        synchronized (supplierLock) {
            while (numSuppliers > 0) {
                try {
                    supplierLock.wait();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }

        connection.close();
        asyncconnection.close();

    } catch (JMSException e) {
        e.printStackTrace();
    }

}

From source file:org.apache.activemq.artemis.tests.integration.amqp.SaslKrb5LDAPSecurityTest.java

public void dotestJAASSecurityManagerAuthorizationPositive(String jaasConfigScope, String artemisRoleName)
        throws Exception {

    createArtemisServer(jaasConfigScope);

    Set<Role> roles = new HashSet<>();
    roles.add(new Role(artemisRoleName, true, true, true, true, true, true, true, true, true, true));
    server.getConfiguration().putSecurityRoles(QUEUE_NAME, roles);
    server.start();//from  ww w .j  av a  2  s  . c o  m

    JmsConnectionFactory jmsConnectionFactory = new JmsConnectionFactory(
            "amqp://localhost:5672?amqp.saslMechanisms=GSSAPI");
    Connection connection = jmsConnectionFactory.createConnection("client", null);

    try {
        connection.start();

        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

        javax.jms.Queue queue = session.createQueue(QUEUE_NAME);

        // PRODUCE
        final String text = RandomUtil.randomString();

        try {
            MessageProducer producer = session.createProducer(queue);
            producer.send(session.createTextMessage(text));
        } catch (Exception e) {
            e.printStackTrace();
            Assert.fail("should not throw exception here");
        }

        // CONSUME
        try {
            MessageConsumer consumer = session.createConsumer(queue);
            TextMessage m = (TextMessage) consumer.receive(1000);
            Assert.assertNotNull(m);
            Assert.assertEquals(text, m.getText());
        } catch (Exception e) {
            Assert.fail("should not throw exception here");
        }
    } finally {
        connection.close();
    }
}

From source file:org.apache.activemq.artemis.tests.integration.persistence.metrics.JournalPendingMessageTest.java

@Test
public void testDeliveringStats() throws Exception {
    AtomicLong publishedMessageSize = new AtomicLong();

    Connection connection = cf.createConnection();
    connection.start();/*from  ww w .  java2  s.  co m*/
    Session session = connection.createSession(false, Session.CLIENT_ACKNOWLEDGE);
    MessageProducer producer = session.createProducer(session.createQueue(defaultQueueName));
    producer.send(session.createTextMessage("test"));

    verifyPendingStats(defaultQueueName, 1, publishedMessageSize.get());
    verifyPendingDurableStats(defaultQueueName, 1, publishedMessageSize.get());
    verifyDeliveringStats(defaultQueueName, 0, 0);

    MessageConsumer consumer = session.createConsumer(session.createQueue(defaultQueueName));
    Message msg = consumer.receive();
    verifyDeliveringStats(defaultQueueName, 1, publishedMessageSize.get());
    msg.acknowledge();

    verifyPendingStats(defaultQueueName, 0, 0);
    verifyPendingDurableStats(defaultQueueName, 0, 0);
    verifyDeliveringStats(defaultQueueName, 0, 0);

    connection.close();
}

From source file:org.mule.transport.jms.integration.AbstractJmsFunctionalTestCase.java

public Message receive(Scenario scenario) throws Exception {
    assertNotNull("scenario is null!", scenario);
    Connection connection = null;
    try {// www .  j a va  2 s  . c  o  m
        connection = getConnection(false, false);
        connection.start();
        Session session = null;
        try {
            session = connection.createSession(scenario.isTransacted(), scenario.getAcknowledge());
            Destination destination = createOutputDestination(session, scenario);
            MessageConsumer consumer = null;
            try {
                consumer = session.createConsumer(destination);
                return scenario.receive(session, consumer);
            } finally {
                if (consumer != null) {
                    consumer.close();
                }
            }
        } finally {
            if (session != null) {
                session.close();
            }
        }
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
                logger.warn("Failed to close jms connection: " + e.getMessage());
            }
        }
    }
}