Example usage for javax.jms QueueBrowser getEnumeration

List of usage examples for javax.jms QueueBrowser getEnumeration

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Introduction

In this page you can find the example usage for javax.jms QueueBrowser getEnumeration.

Prototype


Enumeration getEnumeration() throws JMSException;

Source Link

Document

Gets an enumeration for browsing the current queue messages in the order they would be received.

Usage

From source file:example.browser.Browser.java

public static void main(String[] args) {
    String url = BROKER_URL;
    if (args.length > 0) {
        url = args[0].trim();//from w  ww . java2  s.  c o m
    }
    ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("admin", "password", url);
    Connection connection = null;

    try {

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

        Session session = connection.createSession(NON_TRANSACTED, Session.AUTO_ACKNOWLEDGE);
        Queue destination = session.createQueue("test-queue");
        QueueBrowser browser = session.createBrowser(destination);
        Enumeration enumeration = browser.getEnumeration();

        while (enumeration.hasMoreElements()) {
            TextMessage message = (TextMessage) enumeration.nextElement();
            System.out.println("Browsing: " + message);
            TimeUnit.MILLISECONDS.sleep(DELAY);
        }

        session.close();

    } catch (Exception e) {
        System.out.println("Caught exception!");
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (JMSException e) {
                System.out.println("Could not close an open connection...");
            }
        }
    }
}

From source file:org.dawnsci.commandserver.mx.example.ActiveMQProducer.java

public static void main(String[] args) throws Exception {

    QueueConnectionFactory connectionFactory = ConnectionFactoryFacade
            .createConnectionFactory("tcp://ws097.diamond.ac.uk:61616");
    Connection send = connectionFactory.createConnection();

    Session session = send.createSession(false, Session.AUTO_ACKNOWLEDGE);
    Queue queue = session.createQueue("testQ");

    final MessageProducer producer = session.createProducer(queue);
    producer.setDeliveryMode(DeliveryMode.PERSISTENT);

    Message message = session.createTextMessage("Hello World");
    producer.send(message);//from  w ww  . j a  v a2 s .c o  m

    message = session.createTextMessage("...and another message");
    producer.send(message);

    message = session.createObjectMessage(new TestObjectBean("this could be", "anything"));
    producer.send(message);

    // Test JSON
    SweepBean col = new SweepBean("fred", "d0000000001", 0, 100);

    ObjectMapper mapper = new ObjectMapper();
    String jsonString = mapper.writeValueAsString(col);

    message = session.createTextMessage(jsonString);
    producer.send(message);

    producer.close();
    session.close();
    send.close();

    // Now we peak at the queue
    // If the consumer is not going, the messages should still be there
    if (REQUIRE_PEAK) {
        QueueConnection qCon = connectionFactory.createQueueConnection();
        QueueSession qSes = qCon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
        queue = qSes.createQueue("testQ");
        qCon.start();

        QueueBrowser qb = qSes.createBrowser(queue);
        Enumeration e = qb.getEnumeration();
        if (e.hasMoreElements())
            System.out.println("Peak at queue:");
        while (e.hasMoreElements()) {
            Message m = (Message) e.nextElement();
            if (m == null)
                continue;
            if (m instanceof TextMessage) {
                TextMessage t = (TextMessage) m;
                System.out.println(t.getText());
            } else if (m instanceof ObjectMessage) {
                ObjectMessage o = (ObjectMessage) m;
                System.out.println(o.getObject());
            }
        }

        qb.close();
        qSes.close();
        qCon.close();
    }

}

From source file:org.dawnsci.commandserver.core.producer.Broadcaster.java

/**
 * //  w w w  .j a va  2  s. c om
 * @param bean
 * @throws Exception 
 */
private void updateQueue(StatusBean bean) throws Exception {

    QueueConnection qCon = null;

    try {

        QueueBrowser qb = qSes.createBrowser(queue);

        @SuppressWarnings("rawtypes")
        Enumeration e = qb.getEnumeration();

        ObjectMapper mapper = new ObjectMapper();
        String jMSMessageID = null;
        while (e.hasMoreElements()) {
            Message m = (Message) e.nextElement();
            if (m == null)
                continue;
            if (m instanceof TextMessage) {
                TextMessage t = (TextMessage) m;

                @SuppressWarnings("unchecked")
                final StatusBean qbean = mapper.readValue(t.getText(), bean.getClass());
                if (qbean == null)
                    continue;
                if (qbean.getUniqueId() == null)
                    continue; // Definitely not our bean
                if (qbean.getUniqueId().equals(bean.getUniqueId())) {
                    jMSMessageID = t.getJMSMessageID();
                    break;
                }
            }
        }

        qb.close();

        if (jMSMessageID != null) {
            MessageConsumer consumer = qSes.createConsumer(queue, "JMSMessageID = '" + jMSMessageID + "'");
            Message m = consumer.receive(1000);
            if (m != null && m instanceof TextMessage) {
                MessageProducer producer = qSes.createProducer(queue);
                producer.send(qSes.createTextMessage(mapper.writeValueAsString(bean)));
            }
        }
    } finally {
        if (qCon != null)
            qCon.close();
    }

}

From source file:org.dawnsci.commandserver.core.producer.ProcessConsumer.java

/**
 * Parse the queue for stale jobs and things that should be rerun.
 * @param bean//from  w w  w.j  a v a 2 s. c  o m
 * @throws Exception 
 */
private void processStatusQueue(URI uri, String statusQName) throws Exception {

    QueueConnection qCon = null;

    try {
        QueueConnectionFactory connectionFactory = ConnectionFactoryFacade.createConnectionFactory(uri);
        qCon = connectionFactory.createQueueConnection();
        QueueSession qSes = qCon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
        Queue queue = qSes.createQueue(statusQName);
        qCon.start();

        QueueBrowser qb = qSes.createBrowser(queue);

        @SuppressWarnings("rawtypes")
        Enumeration e = qb.getEnumeration();

        ObjectMapper mapper = new ObjectMapper();

        Map<String, StatusBean> failIds = new LinkedHashMap<String, StatusBean>(7);
        List<String> removeIds = new ArrayList<String>(7);
        while (e.hasMoreElements()) {
            Message m = (Message) e.nextElement();
            if (m == null)
                continue;
            if (m instanceof TextMessage) {
                TextMessage t = (TextMessage) m;

                try {
                    @SuppressWarnings("unchecked")
                    final StatusBean qbean = mapper.readValue(t.getText(), getBeanClass());
                    if (qbean == null)
                        continue;
                    if (qbean.getStatus() == null)
                        continue;
                    if (!qbean.getStatus().isStarted()) {
                        failIds.put(t.getJMSMessageID(), qbean);
                        continue;
                    }

                    // If it has failed, we clear it up
                    if (qbean.getStatus() == Status.FAILED) {
                        removeIds.add(t.getJMSMessageID());
                        continue;
                    }
                    if (qbean.getStatus() == Status.NONE) {
                        removeIds.add(t.getJMSMessageID());
                        continue;
                    }

                    // If it is running and older than a certain time, we clear it up
                    if (qbean.getStatus() == Status.RUNNING) {
                        final long submitted = qbean.getSubmissionTime();
                        final long current = System.currentTimeMillis();
                        if (current - submitted > getMaximumRunningAge()) {
                            removeIds.add(t.getJMSMessageID());
                            continue;
                        }
                    }

                    if (qbean.getStatus().isFinal()) {
                        final long submitted = qbean.getSubmissionTime();
                        final long current = System.currentTimeMillis();
                        if (current - submitted > getMaximumCompleteAge()) {
                            removeIds.add(t.getJMSMessageID());
                        }
                    }

                } catch (Exception ne) {
                    System.out.println("Message " + t.getText() + " is not legal and will be removed.");
                    removeIds.add(t.getJMSMessageID());
                }
            }
        }

        // We fail the non-started jobs now - otherwise we could
        // actually start them late. TODO check this
        final List<String> ids = new ArrayList<String>();
        ids.addAll(failIds.keySet());
        ids.addAll(removeIds);

        if (ids.size() > 0) {

            for (String jMSMessageID : ids) {
                MessageConsumer consumer = qSes.createConsumer(queue, "JMSMessageID = '" + jMSMessageID + "'");
                Message m = consumer.receive(1000);
                if (removeIds.contains(jMSMessageID))
                    continue; // We are done

                if (m != null && m instanceof TextMessage) {
                    MessageProducer producer = qSes.createProducer(queue);
                    final StatusBean bean = failIds.get(jMSMessageID);
                    bean.setStatus(Status.FAILED);
                    producer.send(qSes.createTextMessage(mapper.writeValueAsString(bean)));

                    System.out.println("Failed job " + bean.getName() + " messageid(" + jMSMessageID + ")");

                }
            }
        }
    } finally {
        if (qCon != null)
            qCon.close();
    }

}

From source file:org.dawnsci.commandserver.core.consumer.RemoteSubmission.java

/**
 * Monitors a given bean in the status queue. 
 * If the bean is not there throws exception.
 * If the bean is in a final state, returns the bean straight away.
 * //from  w w  w  .  j a va 2  s.c om
 * Polls the queue for the unique id of the bean we want until it
 * encounters a final state of that bean.
 * 
 * Polling rate is less than 1s
 * 
 * NOTE this class can poll forever if the job it is looking at never finishes.
 * 
 * @param obean
 * @param string
 * @return the bean once it is in a final state.
 * @throws exception if broker or queue absent
 */
public StatusBean monitor(StatusBean obean) throws Exception {

    if (getQueueName() == null || "".equals(getQueueName()))
        throw new Exception("Please specify a queue name!");

    QueueConnectionFactory connectionFactory = ConnectionFactoryFacade.createConnectionFactory(uri);
    QueueConnection qCon = connectionFactory.createQueueConnection(); // This times out when the server is not there.
    QueueSession qSes = qCon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
    Queue queue = qSes.createQueue(queueName);
    qCon.start();

    QueueBrowser qb = qSes.createBrowser(queue);

    Class clazz = obean.getClass();
    ObjectMapper mapper = new ObjectMapper();

    try {
        POLL: while (true) {

            Thread.sleep(500);

            @SuppressWarnings("rawtypes")
            Enumeration e = qb.getEnumeration();

            while (e.hasMoreElements()) { // We must final the bean somewhere.
                Message m = (Message) e.nextElement();
                if (m == null)
                    continue;
                if (m instanceof TextMessage) {
                    TextMessage t = (TextMessage) m;
                    final StatusBean bean = mapper.readValue(t.getText(), clazz);
                    if (bean.getUniqueId().equals(obean.getUniqueId())) {
                        if (bean.getStatus().isFinal())
                            return bean;
                        System.out.println(bean.getPercentComplete());
                        continue POLL;
                    }
                }
            }

            throw new Exception(
                    "The bean with id " + obean.getUniqueId() + " does not exist in " + getQueueName() + "!");

        }
    } finally {
        qCon.close();
    }
}

From source file:org.dawnsci.commandserver.ui.view.StatusQueueView.java

protected Collection<StatusBean> getStatusBeans(final URI uri, final String queueName,
        final IProgressMonitor monitor) throws Exception {

    QueueConnectionFactory connectionFactory = ConnectionFactoryFacade.createConnectionFactory(uri);
    monitor.worked(1);//from w  w  w  .j a  va  2  s  . c  o  m
    QueueConnection qCon = connectionFactory.createQueueConnection(); // This times out when the server is not there.
    QueueSession qSes = qCon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
    Queue queue = qSes.createQueue(queueName);
    qCon.start();

    QueueBrowser qb = qSes.createBrowser(queue);
    monitor.worked(1);

    @SuppressWarnings("rawtypes")
    Enumeration e = qb.getEnumeration();

    Class clazz = getBeanClass();
    ObjectMapper mapper = new ObjectMapper();

    final Collection<StatusBean> list = new TreeSet<StatusBean>(new Comparator<StatusBean>() {
        @Override
        public int compare(StatusBean o1, StatusBean o2) {
            // Newest first!
            long t1 = o2.getSubmissionTime();
            long t2 = o1.getSubmissionTime();
            return (t1 < t2 ? -1 : (t1 == t2 ? 0 : 1));
        }
    });

    while (e.hasMoreElements()) {
        Message m = (Message) e.nextElement();
        if (m == null)
            continue;
        if (m instanceof TextMessage) {
            TextMessage t = (TextMessage) m;
            final StatusBean bean = mapper.readValue(t.getText(), clazz);
            list.add(bean);
        }
    }
    return list;
}

From source file:nl.nn.adapterframework.extensions.tibco.GetTibcoQueues.java

private String getQueueMessage(Session jSession, TibjmsAdmin admin, String queueName, int queueItem,
        LdapSender ldapSender) throws TibjmsAdminException, JMSException {
    QueueInfo qInfo = admin.getQueue(queueName);
    if (qInfo == null) {
        throw new JMSException(" queue [" + queueName + "] does not exist");
    }/*from w  w  w. ja va 2s  .  c  o  m*/

    XmlBuilder qMessageXml = new XmlBuilder("qMessage");
    ServerInfo serverInfo = admin.getInfo();
    String url = serverInfo.getURL();
    qMessageXml.addAttribute("url", url);
    String resolvedUrl = getResolvedUrl(url);
    if (resolvedUrl != null) {
        qMessageXml.addAttribute("resolvedUrl", resolvedUrl);
    }
    qMessageXml.addAttribute("timestamp", DateUtils.getIsoTimeStamp());
    qMessageXml.addAttribute("startTime", DateUtils.format(serverInfo.getStartTime(), DateUtils.fullIsoFormat));
    XmlBuilder qNameXml = new XmlBuilder("qName");
    qNameXml.setCdataValue(queueName);

    Queue queue = jSession.createQueue(queueName);
    QueueBrowser queueBrowser = null;
    try {
        queueBrowser = jSession.createBrowser(queue);
        Enumeration enm = queueBrowser.getEnumeration();
        int count = 0;
        boolean found = false;
        String chompCharSizeString = AppConstants.getInstance().getString("browseQueue.chompCharSize", null);
        int chompCharSize = (int) Misc.toFileSize(chompCharSizeString, -1);

        while (enm.hasMoreElements() && !found) {
            count++;
            if (count == queueItem) {
                qNameXml.addAttribute("item", count);
                Object o = enm.nextElement();
                if (o instanceof Message) {
                    Message msg = (Message) o;
                    XmlBuilder qMessageId = new XmlBuilder("qMessageId");
                    qMessageId.setCdataValue(msg.getJMSMessageID());
                    qMessageXml.addSubElement(qMessageId);
                    XmlBuilder qTimestamp = new XmlBuilder("qTimestamp");
                    qTimestamp.setCdataValue(DateUtils.format(msg.getJMSTimestamp(), DateUtils.fullIsoFormat));
                    qMessageXml.addSubElement(qTimestamp);

                    StringBuffer sb = new StringBuffer("");
                    Enumeration propertyNames = msg.getPropertyNames();
                    while (propertyNames.hasMoreElements()) {
                        String propertyName = (String) propertyNames.nextElement();
                        Object object = msg.getObjectProperty(propertyName);
                        if (sb.length() > 0) {
                            sb.append("; ");
                        }
                        sb.append(propertyName);
                        sb.append("=");
                        sb.append(object);
                    }
                    XmlBuilder qPropsXml = new XmlBuilder("qProps");
                    qPropsXml.setCdataValue(sb.toString());

                    qMessageXml.addSubElement(qPropsXml);
                    XmlBuilder qTextXml = new XmlBuilder("qText");
                    String msgText;
                    try {
                        TextMessage textMessage = (TextMessage) msg;
                        msgText = textMessage.getText();
                    } catch (ClassCastException e) {
                        msgText = msg.toString();
                        qTextXml.addAttribute("text", false);
                    }
                    int msgSize = msgText.length();
                    if (isHideMessage()) {
                        qTextXml.setCdataValue("***HIDDEN***");
                    } else {
                        if (chompCharSize >= 0 && msgSize > chompCharSize) {
                            qTextXml.setCdataValue(msgText.substring(0, chompCharSize) + "...");
                            qTextXml.addAttribute("chomped", true);
                        } else {
                            qTextXml.setCdataValue(msgText);
                        }
                    }
                    qMessageXml.addSubElement(qTextXml);
                    XmlBuilder qTextSizeXml = new XmlBuilder("qTextSize");
                    qTextSizeXml.setValue(Misc.toFileSize(msgSize));
                    qMessageXml.addSubElement(qTextSizeXml);
                }
                found = true;
            } else {
                enm.nextElement();
            }
        }
    } finally {
        if (queueBrowser != null) {
            try {
                queueBrowser.close();
            } catch (JMSException e) {
                log.warn(getLogPrefix(null) + "exception on closing queue browser", e);
            }
        }
    }

    qMessageXml.addSubElement(qNameXml);

    Map aclMap = getAclMap(admin, ldapSender);
    XmlBuilder aclXml = new XmlBuilder("acl");
    XmlBuilder qInfoXml = qInfoToXml(qInfo);
    aclXml.setValue((String) aclMap.get(qInfo.getName()));
    qInfoXml.addSubElement(aclXml);
    qMessageXml.addSubElement(qInfoXml);

    Map consumersMap = getConnectedConsumersMap(admin);
    XmlBuilder consumerXml = new XmlBuilder("connectedConsumers");
    if (consumersMap.containsKey(qInfo.getName())) {
        LinkedList<String> consumers = (LinkedList<String>) consumersMap.get(qInfo.getName());
        String consumersString = listToString(consumers);
        if (consumersString != null) {
            consumerXml.setCdataValue(consumersString);
        }
    }
    qInfoXml.addSubElement(consumerXml);

    return qMessageXml.toXML();
}

From source file:nl.nn.adapterframework.extensions.tibco.TibcoUtils.java

protected static long getQueueFirstMessageAge(Session jSession, String queueName, String messageSelector,
        long currentTime, boolean warn) throws JMSException {
    QueueBrowser queueBrowser = null;
    try {/* ww w .j a v  a2s  .co  m*/
        Queue queue = jSession.createQueue(queueName);
        if (messageSelector == null) {
            queueBrowser = jSession.createBrowser(queue);
        } else {
            queueBrowser = jSession.createBrowser(queue, messageSelector);
        }
        Enumeration enm = queueBrowser.getEnumeration();
        if (enm.hasMoreElements()) {
            Object o = enm.nextElement();
            if (o instanceof Message) {
                Message msg = (Message) o;
                long jmsTimestamp = msg.getJMSTimestamp();
                return currentTime - jmsTimestamp;
            } else {
                if (warn) {
                    log.warn("message was not of type Message, but [" + o.getClass().getName() + "]");
                }
                return -2;
            }
        } else {
            return -1;
        }
    } finally {
        if (queueBrowser != null) {
            try {
                queueBrowser.close();
            } catch (JMSException e) {
                log.warn("Exception on closing queueBrowser", e);
            }
        }
    }
}

From source file:nl.nn.adapterframework.extensions.tibco.TibcoUtils.java

protected static long getQueueMessageCount(Session jSession, String queueName, String messageSelector)
        throws JMSException {
    QueueBrowser queueBrowser = null;
    try {//ww  w  .  j ava  2 s . c om
        Queue queue = jSession.createQueue(queueName);
        if (messageSelector == null) {
            queueBrowser = jSession.createBrowser(queue);
        } else {
            queueBrowser = jSession.createBrowser(queue, messageSelector);
        }
        int count = 0;
        for (Enumeration enm = queueBrowser.getEnumeration(); enm.hasMoreElements(); enm.nextElement()) {
            count++;
        }
        return count;
    } finally {
        if (queueBrowser != null) {
            try {
                queueBrowser.close();
            } catch (JMSException e) {
                log.warn("Exception on closing queueBrowser", e);
            }
        }
    }
}

From source file:nl.nn.adapterframework.jms.JmsMessageBrowser.java

public int getMessageCount() throws ListenerException {
    QueueBrowser queueBrowser = null;
    Session session = null;/*from  w  w  w .ja  v a 2s .  co  m*/
    try {
        session = createSession();
        if (StringUtils.isEmpty(getSelector())) {
            queueBrowser = session.createBrowser((Queue) getDestination());
        } else {
            queueBrowser = session.createBrowser((Queue) getDestination(), getSelector());
        }
        int count = 0;
        for (Enumeration enm = queueBrowser.getEnumeration(); enm.hasMoreElements(); enm.nextElement()) {
            count++;
        }
        return count;
    } catch (Exception e) {
        throw new ListenerException("cannot determin messagecount", e);
    } finally {
        try {
            if (queueBrowser != null) {
                queueBrowser.close();
            }
        } catch (JMSException e) {
            throw new ListenerException("error closing queuebrowser", e);
        }
        closeSession(session);
    }
}