Example usage for com.rabbitmq.client DefaultConsumer DefaultConsumer

Introduction

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

Prototype

public DefaultConsumer(Channel channel) 

Source Link

Document

Constructs a new instance and records its association to the passed-in channel.

Usage

From source file:io.github.mattcarrier.metrics.transport.rabbit.RabbitMQRule.java

License:Apache License

@Override
protected void before() throws Throwable {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setUri(connectionUri);/*www .j  a  va 2 s . c  o  m*/
    conn = factory.newConnection();
    channel = conn.createChannel();

    // create the queue and register the consumer
    channel.queueDeclare(QUEUE_NAME, false, false, true, null);
    channel.basicConsume(QUEUE_NAME, true, "metrics-rabbit-consumer", new DefaultConsumer(channel) {
        @Override
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            if (!isExpecting || !QUEUE_NAME.equals(envelope.getRoutingKey())) {
                return;
            }

            messages.add(body);
            if (messages.size() == expected) {
                isExpecting = false;
            }
        }
    });
}

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From source file:io.opentracing.contrib.rabbitmq.TracingTest.java

License:Apache License

@Test
public void basicConsume() throws Exception {
    String exchangeName = "basicConsumeExchange";
    String queueName = "basicConsumeQueue";
    String routingKey = "#";

    channel.exchangeDeclare(exchangeName, "direct", true);
    channel.queueDeclare(queueName, true, false, false, null);
    channel.queueBind(queueName, exchangeName, routingKey);

    byte[] messageBodyBytes = "Hello, world!".getBytes();

    channel.basicPublish(exchangeName, routingKey, null, messageBodyBytes);

    final CountDownLatch latch = new CountDownLatch(1);
    channel.basicConsume(queueName, false, new DefaultConsumer(channel) {
        @Override/*from ww  w. j av  a2 s . c o  m*/
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            long deliveryTag = envelope.getDeliveryTag();
            channel.basicAck(deliveryTag, false);
            latch.countDown();
        }
    });

    latch.await(30, TimeUnit.SECONDS);

    List<MockSpan> finishedSpans = mockTracer.finishedSpans();
    int tries = 10;
    while (tries > 0 && finishedSpans.size() < 2) {
        TimeUnit.SECONDS.sleep(1L);
        finishedSpans = mockTracer.finishedSpans();
        tries--;
    }

    assertEquals(2, finishedSpans.size());
    checkSpans(finishedSpans);
    assertNull(mockTracer.activeSpan());
}

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From source file:io.qdb.server.input.RabbitMQInputHandler.java

License:Apache License

@Override
public void start(final Sink sink) throws Exception {
    this.sink = sink;
    final Channel c = ensureChannel();
    c.basicConsume(queue, autoAck, "qdb:" + inputPath, new DefaultConsumer(c) {
        @Override// w w w . j a va  2 s  .  co  m
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            boolean ok = false;
            try {
                sink.append(envelope.getRoutingKey(), body);
                if (!autoAck)
                    c.basicAck(envelope.getDeliveryTag(), false);
                ok = true;
            } catch (Exception e) {
                sink.error(e);
            } finally {
                if (!ok) {
                    try {
                        // todo should probably sit on the message for a bit before nacking to prevent storm
                        c.basicNack(envelope.getDeliveryTag(), false, true);
                    } catch (IOException e) {
                        log.debug("Error nacking message: " + e, e);
                    }
                }
            }
        }
    });
}

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From source file:it.av.fac.messaging.rabbitmq.RabbitMQClient.java

/**
 * Instantiates a RabbitMQ connection and binds it to two queues.
 *
 * @param connWrapper The object that contains a connection to the RabbitMQ
 * server.//from w w  w.  j a  v a2 s.com
 * @param queueOut The queue where this connection should send messages to.
 * @param queueIn The queue where this connection should read messages from.
 * @param clientKey The unique client key to be used for routing messages.
 * @param handler The handler to call when new messages are available in the
 * queueIn. Replaces the receive method.
 * @throws Exception If there is a connection issue to the RabbitMQ server.
 */
public RabbitMQClient(RabbitMQConnectionWrapper connWrapper, String queueIn, String queueOut, String clientKey,
        IClientHandler<byte[]> handler) throws Exception {
    this.queueIn = queueIn + "." + clientKey;
    this.queueOut = queueOut;
    this.routingKeyIn = this.queueIn;
    this.routingKeyOut = this.queueOut + "." + clientKey;

    this.conn = connWrapper.getConnection();
    this.channel = RabbitMQChannelPool.createChannel(conn, this.queueIn, this.queueOut, this.routingKeyIn,
            this.routingKeyOut);

    this.channel.basicConsume(this.queueIn, true, new DefaultConsumer(this.channel) {
        @Override
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            handler.handle(body);
        }
    });
}

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From source file:it.av.fac.messaging.rabbitmq.RabbitMQServer.java

/**
 * Instantiates a RabbitMQ connection to receive a request only. Cannot send
 * messages./* w w  w.  j  a va  2 s  . co  m*/
 *
 * @param connWrapper The object that contains a connection to the RabbitMQ
 * server.
 * @param queueIn The queue where this connection should read messages from.
 * @param handler The handler to call when new messages are available in the
 * queueIn. Replaces the receive method.
 * @throws Exception If there is a connection issue to the RabbitMQ server.
 */
public RabbitMQServer(RabbitMQConnectionWrapper connWrapper, String queueIn,
        IServerHandler<byte[], String> handler) throws Exception {
    this.queueIn = queueIn;
    this.queueOut = null;
    this.routingKeyIn = queueIn + ".#";
    this.routingKeyOut = null;
    this.canSend = false;

    this.conn = connWrapper.getConnection();
    this.channel = RabbitMQChannelPool.createChannel(conn, this.queueIn, this.queueOut, this.routingKeyIn,
            this.routingKeyOut);

    this.channel.basicConsume(this.queueIn, true, new DefaultConsumer(this.channel) {
        @Override
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            String clientKey = envelope.getRoutingKey().substring(queueIn.length() + 1);
            handler.handle(body, clientKey);
        }

    });
}

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From source file:it.polimi.tower4clouds.observers.hdb.manager.Queue.java

License:Apache License

private void internalAddSubscription(MessageParser pars) throws IOException {
    boolean autoAck = false;
    if (this.parser != null) {
        internalRemoveSubscription();//from  ww w  .  j  a v  a2s  .c o m
    }
    this.parser = pars;
    channel.basicConsume(queueName, autoAck, queueName + "@" + queueHost, new DefaultConsumer(channel) {
        @Override
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {

            long deliveryTag = envelope.getDeliveryTag();

            String message = new String(body);
            logger.debug("Message received:\n{}", message);

            parser.parseMessage(message);

            channel.basicAck(deliveryTag, false);
        }
    });
}

---

From source file:loanbroker.Aggregator.java

public void reciveFromNormalizer(Hashtable<String, Message> messageFroumBankList,
        Hashtable<String, Message> messagesFromNormalizer, ArrayList<Message> foundMessages)
        throws IOException, TimeoutException, Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(hostName);/*  www.ja  v  a 2s.  c  om*/
    factory.setPort(5672);
    factory.setUsername("student");
    factory.setPassword("cph");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    // channel.exchangeDeclare(inputEXCHANGE_NAME, "direct");
    String queueName = channel.queueDeclare().getQueue();

    channel.queueBind(queueName, ExchangeName.GLOBAL, RoutingKeys.NormalizerToAggregator);
    System.out.println(" [*] Waiting for messages on " + ExchangeName.GLOBAL
            + RoutingKeys.NormalizerToAggregator + ". To exit press CTRL+C");

    Consumer consumer = new DefaultConsumer(channel) {
        @Override
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            String m = new String(body, "UTF-8");

            Gson gson = new GsonBuilder().create();
            LoanResponse lp = gson.fromJson(m, LoanResponse.class);
            Message fm = new Message("" + lp.getSsn(), (int) lp.getInterestRate(), 0, lp.getBank());
            messagesFromNormalizer.put(lp.getCorrelationId(), fm);

            System.out.println(" [x] Received '" + envelope.getRoutingKey() + "':'" + fm.toString() + "'");
            try {
                checkLoanMessages(messageFroumBankList, messagesFromNormalizer, foundMessages);
            } catch (InterruptedException ex) {
                Logger.getLogger(Aggregator.class.getName()).log(Level.SEVERE, null, ex);
            } catch (TimeoutException ex) {
                Logger.getLogger(Aggregator.class.getName()).log(Level.SEVERE, null, ex);
            } catch (Exception ex) {
                Logger.getLogger(Aggregator.class.getName()).log(Level.SEVERE, null, ex);
            }

        }
    };
    channel.basicConsume(queueName, true, consumer);
}

---

From source file:loanbroker.Aggregator.java

public void reciveFromRecieptList(Hashtable<String, Message> messagesFromBankList)
        throws IOException, TimeoutException, Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(hostName);// w  w w.  jav a 2 s .c  o  m
    factory.setPort(5672);
    factory.setUsername("student");
    factory.setPassword("cph");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    channel.exchangeDeclare(ExchangeName.GLOBAL, "direct");
    String queueName = channel.queueDeclare().getQueue();

    channel.queueBind(queueName, ExchangeName.GLOBAL, RoutingKeys.RecipientListToAggregator);
    System.out.println(" [*] Waiting for messages on " + ExchangeName.GLOBAL
            + RoutingKeys.RecipientListToAggregator + ".. To exit press CTRL+C");

    Consumer consumer = new DefaultConsumer(channel) {
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            String m = new String(body, "UTF-8");
            // System.out.println("reciveFromRecieptList" + m);
            String p = properties.getCorrelationId();
            if (p != null) {
                //send to translator
                Gson g = new Gson();
                Message fm = g.fromJson(m, Message.class);
                if (fm.getBanks() != null) {
                    Message k = new Message(fm.getSsn(), fm.getCreditScore(), fm.getLoanAmount(),
                            fm.getLoanDuration());

                    k.setBanks(fm.getBanks());

                    messagesFromBankList.put(p, k);
                }

                System.out.println(" [x] Received '" + envelope.getRoutingKey() + "':'" + fm.toString() + "'");
                //   System.out.println(" [x] Received '" + envelope.getRoutingKey() + "':'" + m + "'");
            } else {
                System.out.println("No correlationId");
            }

        }
    };
    channel.basicConsume(queueName, true, consumer);
}

---

From source file:loanbroker.Result.java

public void reciveResultFromAggregator() throws IOException, TimeoutException, Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(hostName);/*from   w w  w  . jav a2 s  .c  om*/
    factory.setPort(5672);
    factory.setUsername("student");
    factory.setPassword("cph");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    String queueName = channel.queueDeclare().getQueue();
    channel.queueBind(queueName, ExchangeName.GLOBAL, RoutingKeys.Result);
    System.out.println(" [*] Waiting for messages on " + ExchangeName.GLOBAL + RoutingKeys.Result
            + ".. To exit press CTRL+C");

    Consumer consumer = new DefaultConsumer(channel) {
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            String m = new String(body, "UTF-8");
            //  System.out.println("reciveFromRecieptList"+ m);
            String p = properties.getCorrelationId();

            Gson gson = new GsonBuilder().create();
            LoanResponse fm = gson.fromJson(m, LoanResponse.class);

            // System.out.println(" [x] Received '" + envelope.getRoutingKey() + "':'" + fm.toString() + "'");
            //   System.out.println(" [x] Received '" + envelope.getRoutingKey() + "':'" + m + "'");
            System.out.println("**** [info]**** You're best interestrate is '" + fm.getInterestRate()
                    + "' on the CPR number. '" + fm.getSsn() + "' at '" + fm.getBank() + "'");
        }
    };
    channel.basicConsume(queueName, true, consumer);
}

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From source file:mapas.Mapas.java

public static void main(String[] args) throws Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    factory.setPassword("test");
    factory.setUsername("test");
    final Connection connection = factory.newConnection();

    final Channel channel = connection.createChannel();

    channel.queueDeclare(TASK_QUEUE_NAME, true, false, false, null);
    System.out.println(" [*] Waiting for messages. To exit press CTRL+C");

    channel.basicQos(1);/*w  w  w  .j av  a2s.  c om*/

    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, "UTF-8");

            System.out.println(" [x] Received '" + message + "'");
            try {
                doWork(message);
            } catch (Exception e) {
                System.out.println(e.getMessage());
            }
            System.out.println(" [x] Done");
            channel.basicAck(envelope.getDeliveryTag(), false);

        }
    };
    channel.basicConsume(TASK_QUEUE_NAME, false, consumer);
}

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