Examples of com.rabbitmq.client.Channel

com.rabbitmq.client.Channel
mqp.org/">spec for details.
To open a channel,
```
 {@link Connection} conn = ...;{@link Channel} channel = conn.{@link Connection#createChannel createChannel}(); 
```
Public API:
- getChannelNumber
- close
While a Channel can be used by multiple threads, it's important to ensure that only one thread executes a command at once. Concurrent execution of commands will likely cause an UnexpectedFrameError to be thrown.

    public void Subscribe() throws AMQPException {
        if (callback != null) {
            try {
                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());

View Full Code Here

    public void Subscribe(AMQPRoutingKey key) throws AMQPException {
        if (callback != null) {
            try {
                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());

View Full Code Here


    public void Send(OMElement message) throws AMQPException {
        try {
            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);
        }

View Full Code Here

        String channelID = CommonUtils.getChannelID(monitorID);
        if(availableChannels.get(channelID) == null){
        try {
            //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());
        }
        }

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                e.printStackTrace();
            }
        }
        Set<String> strings = availableChannels.keySet();
        for(String key:strings) {
            Channel channel = availableChannels.get(key);
            try {
                channel.close();
            } catch (IOException e) {
                e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
            }
        }
    }

View Full Code Here

            // if this is the last job in the queue at this point with the same username and same host we
            // close the channel and close the connection and remove it from availableChannels
            if (CommonUtils.isTheLastJobInQueue(finishQueue, next)) {
                logger.info("There are no jobs to monitor for common ChannelID:" + channelID + " , so we unsubscribe it" +
                        ", incase new job created we do subscribe again");
                Channel channel = availableChannels.get(channelID);
                if (channel == null) {
                    logger.error("Already Unregistered the listener");
                    throw new AiravataMonitorException("Already Unregistered the listener");
                } else {
                    try {
                        channel.queueUnbind(channel.queueDeclare().getQueue(), "glue2.computing_activity", CommonUtils.getRoutingKey(next));
                        channel.close();
                        channel.getConnection().close();
                        availableChannels.remove(channelID);
                    } catch (IOException e) {
                        logger.error("Error unregistering the listener");
                        throw new AiravataMonitorException("Error unregistering the listener");
                    }

View Full Code Here

    @Subscribe
    private boolean unRegisterListener(JobStatusChangeRequest jobStatus) throws AiravataMonitorException {
        MonitorID monitorID = jobStatus.getMonitorID();
        String channelID = CommonUtils.getChannelID(monitorID);
        if (JobState.FAILED.equals(jobStatus.getState()) || JobState.COMPLETE.equals(jobStatus.getState())){
            Channel channel = availableChannels.get(channelID);
            if (channel == null) {
                logger.error("Already Unregistered the listener");
                throw new AiravataMonitorException("Already Unregistered the listener");
            } else {
                try {
                    channel.queueUnbind(channel.queueDeclare().getQueue(), "glue2.computing_activity", CommonUtils.getRoutingKey(monitorID));
                    channel.close();
                    channel.getConnection().close();
                    availableChannels.remove(channelID);
                } catch (IOException e) {
                    logger.error("Error unregistering the listener");
                    throw new AiravataMonitorException("Error unregistering the listener");
                }

View Full Code Here


  public static void main(String[] argv) throws Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    channel.queueDeclare(QUEUE_NAME, false, false, false, null);
    System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(QUEUE_NAME, true, consumer);
    while (true) {
      QueueingConsumer.Delivery delivery = consumer.nextDelivery();
      String message = new String(delivery.getBody());
      System.out.println(" [x] Received '" + message + "'");
    }

View Full Code Here


  public static void main(String[] argv) throws Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
    String queueName = channel.queueDeclare().getQueue();
    channel.queueBind(queueName, EXCHANGE_NAME, "");
    System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queueName, true, consumer);
    while (true) {
      QueueingConsumer.Delivery delivery = consumer.nextDelivery();
      String message = new String(delivery.getBody());
      System.out.println(" [x] Received '" + message + "'");
    }

View Full Code Here


  public static void main(String[] argv) throws Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    channel.exchangeDeclare(EXCHANGE_NAME, "direct");
    String queueName = channel.queueDeclare().getQueue();
    if (argv.length < 1) {
      System.err
          .println("Usage: ReceiveLogsDirect [info] [warning] [error]");
      System.exit(1);
    }
    for (String severity : argv) {
      channel.queueBind(queueName, EXCHANGE_NAME, severity);
    }
    System.out.println(" [*] Waiting for messages. To exit press CTRL+C");
    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queueName, true, consumer);
    while (true) {
      QueueingConsumer.Delivery delivery = consumer.nextDelivery();
      String message = new String(delivery.getBody());
      String routingKey = delivery.getEnvelope().getRoutingKey();
      System.out.println(" [x] Received '" + routingKey + "':'" + message

View Full Code Here

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