Example usage for com.rabbitmq.client Connection createChannel

Introduction

In this page you can find the example usage for com.rabbitmq.client Connection createChannel.

Prototype

Channel createChannel() throws IOException;

Source Link

Document

Create a new channel, using an internally allocated channel number.

Usage

From source file:net.roboconf.messaging.internal.client.MessageServerClientRabbitMqTest.java

License:Apache License

/**
 * A method to check whether RabbitMQ is running or not.
 * <p>/*from w ww . jav  a  2s . c o m*/
 * If it is not running, tests in this class will be skipped.
 * </p>
 */
@Before
public void checkRabbitMQIsRunning() throws Exception {

    Assume.assumeTrue(this.running);
    Connection connection = null;
    Channel channel = null;
    try {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(MESSAGE_SERVER_IP);
        connection = factory.newConnection();
        channel = connection.createChannel();

    } catch (Exception e) {
        Logger logger = Logger.getLogger(getClass().getName());
        logger.warning("Tests are skipped because RabbitMQ is not running.");
        logger.finest(Utils.writeException(e));

        this.running = false;
        Assume.assumeNoException(e);

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

        if (connection != null)
            connection.close();
    }
}

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From source file:OnlyPackege.TheMightyBank.java

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

    JSONParser jsonParster = new JSONParser();

    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    Connection connection = factory.newConnection();
    Channel recvChannel = connection.createChannel();

    recvChannel.exchangeDeclare(EXCHANGE_NAME, "fanout");

    String queueName = recvChannel.queueDeclare().getQueue();
    recvChannel.queueBind(queueName, EXCHANGE_NAME, "");

    QueueingConsumer consumer = new QueueingConsumer(recvChannel);
    recvChannel.basicConsume(queueName, true, consumer);

    while (true) {
        QueueingConsumer.Delivery delivery = consumer.nextDelivery();
        String responseQueue = delivery.getProperties().getReplyTo();

        Channel sendChannel = connection.createChannel();
        sendChannel.queueDeclare(responseQueue, false, false, false, null);

        String message = new String(delivery.getBody());
        JSONObject recvObj = (JSONObject) jsonParster.parse(message);

        //to be deleted after testing
        System.out.println(" [x] Received '" + message + "'");

        JSONObject obj = new JSONObject();
        obj.put("ssn", recvObj.get("ssn"));
        obj.put("interestRate", Math.random() * 10);

        sendChannel.basicPublish("", responseQueue, null, obj.toJSONString().getBytes());
    }/*from   w ww  .  j a va  2  s . c  o  m*/
}

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From source file:org.apache.airavata.datacat.agent.messageBroker.AiravataUpdateListener.java

License:Apache License

public void startBroker() {
    (new Thread(new Runnable() {
        @Override//  www. j a v  a 2s  . co  m
        public void run() {
            try {
                ConnectionFactory factory = new ConnectionFactory();
                factory.setHost(RABBITMQ_HOST);

                Connection connection = factory.newConnection();
                Channel channel = connection.createChannel();

                channel.exchangeDeclare(EXCHANGE_NAME, "topic");
                String queueName = channel.queueDeclare().getQueue();

                channel.basicQos(1);
                channel.queueBind(queueName, EXCHANGE_NAME, BINDING_KEY);

                logger.debug("Waiting for messages. To exit press CTRL+C");

                QueueingConsumer consumer = new QueueingConsumer(channel);
                channel.basicConsume(queueName, true, consumer);

                while (runFileUpdateListener) {
                    QueueingConsumer.Delivery delivery = consumer.nextDelivery();

                    Message message = new Message();
                    ThriftUtils.createThriftFromBytes(delivery.getBody(), message);
                    TBase event = null;

                    if (message.getMessageType().equals(MessageType.EXPERIMENT_OUTPUT)) {

                        ExperimentOutputCreatedEvent experimentOutputCreatedEvent = new ExperimentOutputCreatedEvent();
                        ThriftUtils.createThriftFromBytes(message.getEvent(), experimentOutputCreatedEvent);

                        logger.debug(" Message Received with message id '" + message.getMessageId()
                                + "' and with message type '" + message.getMessageType()
                                + "'  with experiment name "
                                + experimentOutputCreatedEvent.getExperimentName());

                        event = experimentOutputCreatedEvent;

                        logger.debug(" [x] Received FileInfo Message'");
                        process(experimentOutputCreatedEvent, message.getUpdatedTime());
                        logger.debug(" [x] Done Processing FileInfo Message");
                    } else {
                        logger.debug("Recieved message of type ..." + message.getMessageType());
                    }
                }
            } catch (Exception e) {
                logger.error(e);
            }
        }

    })).start();

}

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From source file:org.apache.airavata.datacat.agent.org.apache.airavata.datacat.agent.messageBroker.RabbitMQConsumerTest.java

License:Apache License

/**
 * Test method to publish dummy data to RabbitMQ
 * @param messageType//w  w w .  ja  v  a 2  s . co m
 * @throws java.io.IOException
 * @throws TException
 */
public void publish(MessageType messageType) throws java.io.IOException, TException {

    //establishing the connection
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(RABBITMQ_HOST);
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    channel.exchangeDeclare(EXCHANGE_NAME, "topic");

    String DATA_ROOT = AgentProperties.getInstance().getProperty(Constants.DATA_ROOT, "");

    //creating the output created Event
    ExperimentOutputCreatedEvent event = new ExperimentOutputCreatedEvent();
    event.setExperimentId("test");
    event.setOutputPath(DATA_ROOT + "/2H2OOHNCmin.com.out");

    //serializing the event
    byte[] body = ThriftUtils.serializeThriftObject(event);
    Message message = new Message();
    message.setEvent(body);
    message.setMessageId("sad");
    message.setMessageType(messageType);
    message.setUpdatedTime(993344232);
    String routingKey = "*";

    //serializing the message object
    byte[] messageArray = ThriftUtils.serializeThriftObject(message);
    channel.basicPublish(EXCHANGE_NAME, BINDING_KEY, null, messageArray);

    logger.debug(" [x] Sent '" + message + "'");

    channel.close();
    connection.close();
}

---

From source file:org.apache.airavata.gfac.monitor.impl.push.amqp.AMQPMonitor.java

License:Apache License

@Override
public boolean registerListener(MonitorID monitorID) throws AiravataMonitorException {
    // we subscribe to read user-host based subscription
    HostDescription host = monitorID.getHost();
    String hostAddress = host.getType().getHostAddress();
    // in amqp case there are no multiple jobs per each host, because once a job is put in to the queue it
    // will be picked by the Monitor, so jobs will not stay in this queueu but jobs will stay in finishQueue
    String channelID = CommonUtils.getChannelID(monitorID);
    if (availableChannels.get(channelID) == null) {
        try {//w ww.  j av  a 2  s .co  m
            //todo need to fix this rather getting it from a file
            Connection connection = AMQPConnectionUtil.connect(amqpHosts, connectionName, proxyPath);
            Channel channel = null;
            channel = connection.createChannel();
            availableChannels.put(channelID, channel);
            String queueName = channel.queueDeclare().getQueue();

            BasicConsumer consumer = new BasicConsumer(new JSONMessageParser(), localPublisher); // here we use local publisher
            channel.basicConsume(queueName, true, consumer);
            String filterString = CommonUtils.getRoutingKey(monitorID.getUserName(), hostAddress);
            // here we queuebind to a particular user in a particular machine
            channel.queueBind(queueName, "glue2.computing_activity", filterString);
            logger.info("Using filtering string to monitor: " + filterString);
        } catch (IOException e) {
            logger.error("Error creating the connection to finishQueue the job:" + monitorID.getUserName());
        }
    }
    return true;
}

---

From source file:org.apache.airavata.gfac.monitor.impl.push.amqp.SimpleJobFinishConsumer.java

License:Apache License

public void listen() {
    try {/* ww  w . jav  a  2  s . c  o  m*/
        String queueName = ServerSettings.getSetting(Constants.GFAC_SERVER_PORT, "8950");
        String uri = "amqp://localhost";

        ConnectionFactory connFactory = new ConnectionFactory();
        connFactory.setUri(uri);
        Connection conn = connFactory.newConnection();
        logger.info("--------Created the connection to Rabbitmq server successfully-------");

        final Channel ch = conn.createChannel();

        logger.info("--------Created the channel with Rabbitmq server successfully-------");

        ch.queueDeclare(queueName, false, false, false, null);

        logger.info("--------Declare the queue " + queueName + " in Rabbitmq server successfully-------");

        final QueueingConsumer consumer = new QueueingConsumer(ch);
        ch.basicConsume(queueName, consumer);
        (new Thread() {
            public void run() {
                try {
                    while (true) {
                        QueueingConsumer.Delivery delivery = consumer.nextDelivery();
                        String message = new String(delivery.getBody());
                        logger.info(
                                "---------------- Job Finish message received:" + message + " --------------");
                        synchronized (completedJobsFromPush) {
                            completedJobsFromPush.add(message);
                        }
                        ch.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
                    }
                } catch (Exception ex) {
                    logger.error("--------Cannot connect to a RabbitMQ Server--------", ex);
                }
            }

        }).start();
    } catch (Exception ex) {
        logger.error("Cannot connect to a RabbitMQ Server: ", ex);
        logger.info("------------- Push monitoring for HPC jobs is disabled -------------");
    }
}

---

From source file:org.apache.airavata.wsmg.client.amqp.rabbitmq.AMQPBroadcastReceiverImpl.java

License:Apache License

public void Subscribe() throws AMQPException {
    if (callback != null) {
        try {//from   w  w w .java 2s. c o m
            Connection connection = connectionFactory.newConnection();

            Channel channel = connection.createChannel();
            channel.exchangeDeclare(AMQPUtil.EXCHANGE_NAME_FANOUT, AMQPUtil.EXCHANGE_TYPE_FANOUT);

            String queueName = channel.queueDeclare().getQueue();
            channel.queueBind(queueName, AMQPUtil.EXCHANGE_NAME_FANOUT, "");

            QueueingConsumer consumer = new QueueingConsumer(channel);
            channel.basicConsume(queueName, true, consumer);

            while (true) {
                QueueingConsumer.Delivery delivery = consumer.nextDelivery();
                String message = new String(delivery.getBody());

                callback.onMessage(message);
            }
        } catch (Exception e) {
            throw new AMQPException(e);
        }
    }
}

---

From source file:org.apache.airavata.wsmg.client.amqp.rabbitmq.AMQPBroadcastSenderImpl.java

License:Apache License

public void Send(OMElement message) throws AMQPException {
    try {/*from  w w  w  .  ja v  a  2 s.  c om*/
        if (isRoutable(message)) {
            Connection connection = connectionFactory.newConnection();
            Channel channel = connection.createChannel();
            channel.exchangeDeclare(AMQPUtil.EXCHANGE_NAME_FANOUT, AMQPUtil.EXCHANGE_TYPE_FANOUT);

            channel.basicPublish(AMQPUtil.EXCHANGE_NAME_FANOUT, "", null, message.toString().getBytes());

            channel.close();
            connection.close();
        }
    } catch (IOException e) {
        throw new AMQPException(e);
    }
}

---

From source file:org.apache.airavata.wsmg.client.amqp.rabbitmq.AMQPReceiverImpl.java

License:Apache License

public void Subscribe(AMQPRoutingKey key) throws AMQPException {
    if (callback != null) {
        try {//from w  w w.j  av a  2  s  .  co  m
            Connection connection = connectionFactory.newConnection();

            Channel channel = connection.createChannel();
            channel.exchangeDeclare(AMQPUtil.EXCHANGE_NAME_DIRECT, AMQPUtil.EXCHANGE_TYPE_DIRECT);

            String queueName = channel.queueDeclare().getQueue();
            channel.queueBind(queueName, AMQPUtil.EXCHANGE_NAME_DIRECT, key.getNativeKey());

            QueueingConsumer consumer = new QueueingConsumer(channel);
            channel.basicConsume(queueName, true, consumer);

            while (true) {
                QueueingConsumer.Delivery delivery = consumer.nextDelivery();
                String message = new String(delivery.getBody());

                callback.onMessage(message);
            }
        } catch (Exception e) {
            throw new AMQPException(e);
        }
    }
}

---

From source file:org.apache.airavata.wsmg.client.amqp.rabbitmq.AMQPSenderImpl.java

License:Apache License

public void Send(OMElement message) throws AMQPException {
    try {/*from   ww w .  jav  a2  s .  c o  m*/
        if (isRoutable(message)) {
            Connection connection = connectionFactory.newConnection();
            Channel channel = connection.createChannel();
            channel.exchangeDeclare(AMQPUtil.EXCHANGE_NAME_DIRECT, AMQPUtil.EXCHANGE_TYPE_DIRECT);

            List<String> routingKeys = new ArrayList<String>();
            getRoutingKeys(message, routingKeys);

            for (String routingKey : routingKeys) {
                channel.basicPublish(AMQPUtil.EXCHANGE_NAME_DIRECT, routingKey, null,
                        message.toString().getBytes());
            }

            channel.close();
            connection.close();
        }
    } catch (IOException e) {
        throw new AMQPException(e);
    }
}

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