Examples with MessageConsumer javax.jms.MessageConsumer used on opensource projects

Example 1 with MessageConsumer

use of javax.jms.MessageConsumer in project storm by apache.

the class JmsSpout method open.

/**
     * <code>ISpout</code> implementation.
     * <p>
     * Connects the JMS spout to the configured JMS destination
     * topic/queue.
     */
@SuppressWarnings("rawtypes")
public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
    if (this.jmsProvider == null) {
        throw new IllegalStateException("JMS provider has not been set.");
    }
    if (this.tupleProducer == null) {
        throw new IllegalStateException("JMS Tuple Producer has not been set.");
    }
    Integer topologyTimeout = (Integer) conf.get("topology.message.timeout.secs");
    // TODO fine a way to get the default timeout from storm, so we're not hard-coding to 30 seconds (it could change)
    topologyTimeout = topologyTimeout == null ? 30 : topologyTimeout;
    if ((topologyTimeout.intValue() * 1000) > this.recoveryPeriod) {
        LOG.warn("*** WARNING *** : " + "Recovery period (" + this.recoveryPeriod + " ms.) is less then the configured " + "'topology.message.timeout.secs' of " + topologyTimeout + " secs. This could lead to a message replay flood!");
    }
    this.queue = new LinkedBlockingQueue<Message>();
    this.toCommit = new TreeSet<JmsMessageID>();
    this.pendingMessages = new HashMap<JmsMessageID, Message>();
    this.collector = collector;
    try {
        ConnectionFactory cf = this.jmsProvider.connectionFactory();
        Destination dest = this.jmsProvider.destination();
        this.connection = cf.createConnection();
        this.session = connection.createSession(false, this.jmsAcknowledgeMode);
        MessageConsumer consumer = session.createConsumer(dest);
        consumer.setMessageListener(this);
        this.connection.start();
        if (this.isDurableSubscription() && this.recoveryPeriod > 0) {
            this.recoveryTimer = new Timer();
            this.recoveryTimer.scheduleAtFixedRate(new RecoveryTask(), 10, this.recoveryPeriod);
        }
    } catch (Exception e) {
        LOG.warn("Error creating JMS connection.", e);
    }
}

Example 2 with MessageConsumer

use of javax.jms.MessageConsumer in project javaee7-samples by javaee-samples.

the class ClassicMessageReceiver method receiveMessage.

public String receiveMessage() {
    String response = null;
    Connection connection = null;
    try {
        connection = connectionFactory.createConnection();
        connection.start();
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageConsumer messageConsumer = session.createConsumer(demoQueue);
        Message message = messageConsumer.receive(5000);
        response = message.getBody(String.class);
    } catch (JMSException ex) {
        ex.printStackTrace();
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException ex) {
                ex.printStackTrace();
            }
        }
    }
    return response;
}

Example 3 with MessageConsumer

use of javax.jms.MessageConsumer in project quickstarts by jboss-switchyard.

the class JMSClient method sendToHornetQ.

private static void sendToHornetQ(String value) throws Exception {
    HornetQMixIn hqMixIn = new HornetQMixIn(false).setUser(USER).setPassword(PASSWD);
    hqMixIn.initialize();
    try {
        Session session = hqMixIn.getJMSSession();
        final MessageProducer producer = session.createProducer(HornetQMixIn.getJMSQueue(REQUEST_NAME));
        final MessageConsumer consumer = session.createConsumer(HornetQMixIn.getJMSQueue(REPLY_NAME));
        producer.send(hqMixIn.createJMSMessage(createPayload(value)));
        System.out.println("Message sent. Waiting for reply ...");
        Message message = consumer.receive(3000);
        String reply = hqMixIn.readStringFromJMSMessage(message);
        System.out.println("REPLY: \n" + reply);
    } finally {
        hqMixIn.uninitialize();
    }
}

Example 4 with MessageConsumer

use of javax.jms.MessageConsumer in project quickstarts by jboss-switchyard.

the class JMSClient method sendToActiveMQ.

private static void sendToActiveMQ(String value) throws Exception {
    ConnectionFactory cf = new ActiveMQConnectionFactory(AMQ_USER, AMQ_PASSWD, AMQ_BROKER_URL);
    Connection conn = cf.createConnection();
    try {
        Session session = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
        final MessageProducer producer = session.createProducer(session.createQueue(REQUEST_NAME));
        final MessageConsumer consumer = session.createConsumer(session.createQueue(REPLY_NAME));
        conn.start();
        producer.send(session.createTextMessage(createPayload(value)));
        System.out.println("Message sent. Waiting for reply ...");
        Message message = consumer.receive(3000);
        String reply = ((TextMessage) message).getText();
        System.out.println("REPLY: \n" + reply);
    } finally {
        conn.close();
    }
}

Example 5 with MessageConsumer

use of javax.jms.MessageConsumer in project quickstarts by jboss-switchyard.

the class OrderIntakeClient method main.

/**
     * Main routing for OrderIntakeClient
     * @param args command-line args
     * @throws Exception if something goes wrong.
     */
public static void main(final String[] args) throws Exception {
    HornetQMixIn hqMixIn = new HornetQMixIn(false).setUser(USER).setPassword(PASSWD);
    hqMixIn.initialize();
    try {
        Session session = hqMixIn.getJMSSession();
        MessageProducer producer = session.createProducer(HornetQMixIn.getJMSQueue(ORDER_QUEUE_NAME));
        String orderTxt = readFileContent(args[0]);
        System.out.println("Submitting Order" + "\n" + "----------------------------\n" + orderTxt + "\n----------------------------");
        producer.send(hqMixIn.createJMSMessage(orderTxt));
        MessageConsumer consumer = session.createConsumer(HornetQMixIn.getJMSQueue(ORDERACK_QUEUE_NAME));
        System.out.println("Order submitted ... waiting for reply.");
        TextMessage reply = (TextMessage) consumer.receive(3000);
        if (reply == null) {
            System.out.println("No reply received.");
        } else {
            System.out.println("Received reply" + "\n" + "----------------------------\n" + reply.getText() + "\n----------------------------");
        }
    } finally {
        hqMixIn.uninitialize();
    }
}