Example usage for com.rabbitmq.client Channel basicConsume

Introduction

In this page you can find the example usage for com.rabbitmq.client Channel basicConsume.

Prototype

String basicConsume(String queue, boolean autoAck, Consumer callback) throws IOException;

Source Link

Document

Start a non-nolocal, non-exclusive consumer, with a server-generated consumerTag.

Usage

From source file:org.wso2.siddhi.debs2017.input.DebsBenchmarkSystem.java

License:Open Source License

private void registerConsumerFor(RabbitQueue queue) throws IOException {
    Channel channel = queue.getChannel();
    channel.basicConsume(queue.getName(), false, new DefaultConsumer(channel) {
        @Override//from w ww  .java 2 s . co  m
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            getChannel().basicAck(envelope.getDeliveryTag(), false);
            DebsBenchmarkSystem.this.handleDelivery(body);
        }
    });
}

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From source file:org.wso2.siddhi.debs2017.input.rabbitmq.RabbitMQConsumer.java

License:Open Source License

/**
 *  Consumes the sample data/*from  w  w w . j ava 2  s .  com*/
 *
 */
public void consume(String queue, String host, String host1, int port1, String host2, int port2, String host3,
        int port3, int executorSize) {
    TASK_QUEUE_NAME = queue;
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(host);
    final Connection connection;
    final Channel channel;
    final Consumer consumer;
    try {
        connection = factory.newConnection(EXECUTORS);
        channel = connection.createChannel();
        consumer = new EventDispatcher(channel, host1, port1, host2, port2, host3, port3, executorSize);
        boolean autoAck = true; // acknowledgment is covered below
        channel.basicConsume(TASK_QUEUE_NAME, autoAck, consumer);
    } catch (IOException e) {
        e.printStackTrace();
    } catch (TimeoutException e) {
        e.printStackTrace();
    }
}

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From source file:ox.softeng.burst.service.message.RabbitMessageService.java

@Override
public void run() {
    for (int c = 0; c < consumerCount; c++) {
        try {/*from w  w w. j a v  a 2  s .  co  m*/
            Channel channel = connection.createChannel();
            channel.basicQos(40);
            channel.exchangeDeclare(exchange, "topic", true);
            Consumer consumer = new MessageConsumer(channel, entityManagerFactory);
            channel.basicConsume(queue, true, consumer);
        } catch (IOException e) {
            logger.error("Error running consumer for queue '" + queue + "'", e);
        } catch (Exception e) {
            logger.error("Unhandled exception: " + e.getMessage(), e);
        }
    }
}

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From source file:ox.softeng.burst.services.RabbitService.java

License:Open Source License

public void run() {
    try {// ww  w . ja  v  a 2s. c  om
        Channel channel = connection.createChannel();
        channel.basicQos(40);
        channel.exchangeDeclare(rabbitMQExchange, "topic", true);
        Consumer consumer = createConsumer(channel);
        logger.warn("Waiting for messages");
        channel.basicConsume(rabbitMQQueue, true, consumer);
    } catch (IOException e) {
        logger.error("Error running consumer for queue '" + rabbitMQQueue + "'", e);
    } catch (Exception e) {
        logger.error("Unhandled exception: " + e.getMessage(), e);
    }
}

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From source file:pl.nask.hsn2.bus.rabbitmq.endpoint.RbtConsumeEndPoint.java

License:Open Source License

/**
 * This method creates single consumer./*from   w  w  w. j  a  va 2 s  .  co  m*/
 * 
 * @throws BusException If there is a problem with creating consumer.
 */
private void createConsumer() throws BusException {
    Channel channel = null;
    try {
        channel = connection.createChannel();
    } catch (IOException e) {
        LOGGER.error("Error creating channel.");
        throw new BusException("Can't create channel.", e);
    }

    Consumer consumer = new RbtDefaultConsumer(autoack, channel, responseHandler) {
        @Override
        public void handleShutdownSignal(String consumerTag, ShutdownSignalException sig) {
            try {
                close();
            } catch (BusException ex) {
                LOGGER.error("Error during shutdown customer.", ex);
            }
            super.handleShutdownSignal(consumerTag, sig);
        }
    };

    try {
        channel.basicConsume(consumerQueueName, this.autoack, consumer);
        this.channels.add(channel);
    } catch (IOException e) {
        LOGGER.error("Error creating consumer.");
        throw new BusException("Can't create consumer.", e);
    }
}

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From source file:pl.nask.hsn2.DataStoreActiveCleaner.java

License:Open Source License

/**
 * Initialize RabbitMQ connection./*from www. ja v  a  2  s. c  o  m*/
 *
 * @return RabbitMQ consumer.
 * @throws IOException
 *             When there's some connection issues.
 */
private QueueingConsumer initRabbitMqConnection() throws IOException {
    ConnectionFactory connFactory = new ConnectionFactory();
    connFactory.setHost(rbtHostName);
    rbtConnection = connFactory.newConnection();
    Channel channel = rbtConnection.createChannel();
    channel.exchangeDeclare(rbtNotifyExchName, "fanout");
    String queueName = channel.queueDeclare().getQueue();
    channel.queueBind(queueName, rbtNotifyExchName, "");
    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queueName, AUTO_ACK, consumer);
    return consumer;
}

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From source file:play.modules.rabbitmq.consumer.RabbitMQConsumer.java

License:Apache License

/**
 * Creates the channel.//from w  w w  .ja  v a2s .  c o m
 * 
 * @param channel
 *            the channel
 * @param plugin
 *            the plugin
 * @return the channel
 * @throws Exception
 *             the exception
 */
protected QueueingConsumer createConsumer(Channel channel, RabbitMQPlugin plugin) throws Exception {
    // Get Plugin
    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(this.queue(), plugin.isAutoAck(), consumer);

    // Log Debug
    Logger.info("RabbitMQ Consumer - Channel: %s, Consumer: %s " + channel, consumer);

    // Return Channel
    return consumer;
}

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From source file:pro.foundev.examples.spark_streaming.java.interactive.querybasedconsumer.QueryConsumer.java

License:Apache License

public void run() {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    Cluster cluster = Cluster.builder().addContactPoint("127.0.0.1").build();
    final Session session = cluster.connect();
    session.execute(String.format("CREATE TABLE IF NOT EXISTS tester.warningsrdd (ssn text, "
            + "batchStartTime bigint, id uuid, amount decimal, rule text, PRIMARY KEY(batchStartTime, id))"));
    final PreparedStatement preparedStatement = session
            .prepare("SELECT * FROM tester.warningsrdd where batchStartTime = ?");
    try {/*from   w  w  w  .ja va2  s  . com*/
        Connection connection = factory.newConnection();
        final Channel channel = connection.createChannel();
        final String queue = channel.queueDeclare().getQueue();
        channel.queueBind(queue, EXCHANGE_NAME, "");

        final Consumer consumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                    byte[] body) throws IOException {
                String message = new String(body);
                long batchStartTime = Long.parseLong(message);
                System.out.println("Writing batch with start time of " + new Date(batchStartTime));
                ResultSet warningsResultSet = session.execute(preparedStatement.bind(batchStartTime));
                int count = 0;
                for (Row warning : warningsResultSet) {
                    count += 1;
                    BigDecimal decimal = warning.getDecimal("amount");
                    UUID id = warning.getUUID("id");
                    String ssn = warning.getString("ssn");
                    String rule = warning.getString("rule");
                    Warning warningObj = new Warning();
                    warningObj.setAmount(decimal);
                    warningObj.setId(id);
                    warningObj.setSsn(ssn);
                    warningObj.setRule(rule);
                    notifyUI(warningObj);
                }
                System.out.println("Batch with start time of " + new Date(batchStartTime) + " Complete with "
                        + count + " items.");
            }
        };
        channel.basicConsume(queue, true, consumer);
    } catch (IOException e) {
        e.printStackTrace();
    }
}

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From source file:pro.foundev.examples.spark_streaming.java.interactive.smartconsumer.DeduplicatingRabbitMQConsumer.java

License:Apache License

public void run() {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    try {/*w w w . ja v  a 2 s .  c  o m*/
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();
        QueueingConsumer consumer = new QueueingConsumer(channel);
        channel.basicConsume(EXCHANGE_NAME, true, consumer);
        Set<String> messages = new HashSet<>();
        Stopwatch stopwatch = new Stopwatch();
        stopwatch.start();
        while (true) {
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            String message = new String(delivery.getBody());
            messages.add(message);

            if (stopwatch.elapsed(TimeUnit.MILLISECONDS) > 1000l) {
                System.out.println("it should be safe to submit messages now");
                for (String m : messages) {
                    //notifying user interface
                    System.out.println(m);
                }
                stopwatch.stop();
                stopwatch.reset();
                messages.clear();
            }
            if (messages.size() > 100000000) {
                System.out.println("save off to file system and clear before we lose everything");
                messages.clear();
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}

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From source file:pt.ua.ies.ControllerView.java

@PostConstruct
public void init() {
    System.out.println("init");
    recive = "";/*ww  w .j a v a2 s. c om*/
    reciveBeforeRefresh = recive;
    try {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");

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

        channel.exchangeDeclare(DisplayMessage.EXCHANGE_NAME, "fanout");
        String queueName = channel.queueDeclare().getQueue();
        channel.queueBind(queueName, DisplayMessage.EXCHANGE_NAME, "");

        MessageConsumer m = new MessageConsumer(channel, this);

        channel.basicConsume(queueName, true, m);
    } catch (Exception ex) {
        Logger.getLogger(ControllerView.class.getName()).log(Level.SEVERE, null, ex);
    }
}

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