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:es.devcircus.rabbitmq_examples.rabbitmq_rpc.RPCServer.java

License:Open Source License

/**
 *
 * @param argv//from  ww  w.j  a  va 2s.  c  o m
 */
public static void main(String[] argv) {
    Connection connection = null;
    Channel channel = null;
    try {
        ConnectionFactory factory = new ConnectionFactory();
        //            factory.setHost("localhost");
        factory.setHost("192.168.0.202");
        //            factory.setPort(5671);

        //            factory.useSslProtocol();

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

        channel.queueDeclare(RPC_QUEUE_NAME, false, false, false, null);

        channel.basicQos(1);

        QueueingConsumer consumer = new QueueingConsumer(channel);
        channel.basicConsume(RPC_QUEUE_NAME, false, consumer);

        System.out.println(" [x] Awaiting RPC requests");

        while (true) {
            String response = null;

            QueueingConsumer.Delivery delivery = consumer.nextDelivery();

            BasicProperties props = delivery.getProperties();
            BasicProperties replyProps = new BasicProperties.Builder().correlationId(props.getCorrelationId())
                    .build();

            try {
                String message = new String(delivery.getBody(), "UTF-8");
                int n = Integer.parseInt(message);

                System.out.println(" [.] fib(" + message + ")");
                response = "" + fib(n);
            } catch (Exception e) {
                System.out.println(" [.] " + e.toString());
                response = "";
            } finally {
                channel.basicPublish("", props.getReplyTo(), replyProps, response.getBytes("UTF-8"));

                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            }
        }
    } catch (IOException | InterruptedException | ShutdownSignalException | ConsumerCancelledException e) {
        System.out.println(e.toString());
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (Exception ignore) {
            }
        }
    }
}

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From source file:es.devcircus.rabbitmq_examples.rabbitmq_topics.ReceiveLogsTopic.java

License:Open Source License

/**
 * //from w ww . j ava  2  s .c o  m
 * @param argv 
 */
public static void main(String[] argv) {
    Connection connection = null;
    Channel channel = null;
    try {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");

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

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

        if (argv.length < 1) {
            System.err.println("Usage: ReceiveLogsTopic [binding_key]...");
            System.exit(1);
        }

        for (String bindingKey : argv) {
            channel.queueBind(queueName, EXCHANGE_NAME, bindingKey);
        }

        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 + "'");
        }
    } catch (IOException | InterruptedException | ShutdownSignalException | ConsumerCancelledException e) {
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (Exception ignore) {
            }
        }
    }
}

---

From source file:es.devcircus.rabbitmq_examples.rabbitmq_work_queues.Worker.java

License:Open Source License

/**
 * /*from   w  w  w  .j a  v a2s  . c o  m*/
 * @param argv
 * @throws Exception 
 */
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(TASK_QUEUE_NAME, true, false, false, null);
    System.out.println(" [*] Waiting for messages. To exit press CTRL+C");

    channel.basicQos(1);

    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(TASK_QUEUE_NAME, false, consumer);

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

        System.out.println(" [x] Received '" + message + "'");
        doWork(message);
        System.out.println(" [x] Done");

        channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
    }
}

---

From source file:eu.betaas.rabbitmq.subscriber.SubscriberService.java

License:Apache License

public void startService() {
    try {//from   ww w.j  a  va 2  s .  co m
        log.info("#Starting queue #");
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost("localhost");
        Connection connection;
        log.info("#Starting #");
        connection = factory.newConnection();
        log.info("#Starting connection#");
        Channel channel = connection.createChannel();

        channel.exchangeDeclare(ename, mode);
        String queueName = channel.queueDeclare().getQueue();
        channel.queueBind(queueName, ename, bussubkey);
        log.info("#Starting connection on queue #");
        consumer = new QueueingConsumer(channel);
        channel.basicConsume(queueName, true, consumer);

        log.info("#Running #");
        run();

    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (ShutdownSignalException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (ConsumerCancelledException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

---

From source file:gash.router.server.MessageServer.java

License:Apache License

public void createQueue() throws IOException, ShutdownSignalException, ConsumerCancelledException,
        InterruptedException, SQLException {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    channel.queueDeclare("inbound_queue", false, false, false, null);
    channel.basicQos(1);//from w ww .j a va 2 s . c  o m
    postgre = new PostgreSQL(url, username, password, dbname, ssl);
    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume("inbound_queue", false, consumer);
    //       Map<String, byte[]> map = new HashMap<String, byte[]>();
    while (true) {
        QueueingConsumer.Delivery delivery = consumer.nextDelivery();
        BasicProperties props = delivery.getProperties();
        String request = props.getType();
        System.out.println(request);

        if (request != null) {
            if (request.equals("get")) {
                String key = new String(delivery.getBody());
                BasicProperties replyProps = new BasicProperties.Builder()
                        .correlationId(props.getCorrelationId()).build();
                byte[] image = postgre.get(key);
                channel.basicPublish("", props.getReplyTo(), replyProps, image);
                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            }

            if (request.equals("put")) {
                byte[] image = delivery.getBody();
                postgre.put(props.getUserId(), image);
                BasicProperties replyProps = new BasicProperties.Builder()
                        .correlationId(props.getCorrelationId()).build();

                channel.basicPublish("", props.getReplyTo(), replyProps, image);
                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            }
            if (request.equals("post")) {
                System.out.println("Message Server");
                String key = postgre.post(delivery.getBody());
                BasicProperties replyProps = new BasicProperties.Builder()
                        .correlationId(props.getCorrelationId()).build();

                channel.basicPublish("", props.getReplyTo(), replyProps, key.getBytes());
                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            }
            if (request.equals("delete")) {
                String key = new String(delivery.getBody());
                postgre.delete(key);
            }

        }
    }
}

---

From source file:genqa.ExportRabbitMQVerifier.java

License:Open Source License

public void run() throws IOException, InterruptedException {
    final Connection connection = m_connFactory.newConnection();
    final Channel channel = connection.createChannel();

    try {//w w  w.ja  v  a2 s .co  m
        channel.exchangeDeclare(m_exchangeName, "topic", true);
        String dataQueue = channel.queueDeclare().getQueue();
        channel.queueBind(dataQueue, m_exchangeName, "EXPORT_PARTITIONED_TABLE.#");
        channel.queueBind(dataQueue, m_exchangeName, "EXPORT_PARTITIONED_TABLE2.#");
        channel.queueBind(dataQueue, m_exchangeName, "EXPORT_REPLICATED_TABLE.#");
        channel.queueBind(dataQueue, m_exchangeName, "EXPORT_PARTITIONED_TABLE_FOO.#");
        channel.queueBind(dataQueue, m_exchangeName, "EXPORT_PARTITIONED_TABLE2_FOO.#");
        channel.queueBind(dataQueue, m_exchangeName, "EXPORT_REPLICATED_TABLE_FOO.#");
        String doneQueue = channel.queueDeclare().getQueue();
        channel.queueBind(doneQueue, m_exchangeName, "EXPORT_DONE_TABLE.#");
        channel.queueBind(doneQueue, m_exchangeName, "EXPORT_DONE_TABLE_FOO.#");

        // Setup callback for data stream
        channel.basicConsume(dataQueue, false, createConsumer(channel));

        // Setup callback for the done message
        QueueingConsumer doneConsumer = new QueueingConsumer(channel);
        channel.basicConsume(doneQueue, true, doneConsumer);

        // Wait until the done message arrives, then verify count
        final QueueingConsumer.Delivery doneMsg = doneConsumer.nextDelivery();
        final long expectedRows = Long.parseLong(ExportOnServerVerifier.RoughCSVTokenizer
                .tokenize(new String(doneMsg.getBody(), Charsets.UTF_8))[6]);

        while (expectedRows > m_verifiedRows) {
            Thread.sleep(1000);
            System.err.println("Expected " + expectedRows + " " + m_verifiedRows);
        }
    } finally {
        tearDown(channel);
        channel.close();
        connection.close();
    }
}

---

From source file:getbanks2.GetBanks2.java

/**
 * @param args the command line arguments
 * @throws java.io.IOException//  w  ww.  j a va 2s  .  c o m
 * @throws java.util.concurrent.TimeoutException
 */
public static void main(String[] args) throws IOException, TimeoutException {

    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("datdb.cphbusiness.dk");
    factory.setUsername("Dreamteam");
    factory.setPassword("bastian");
    Connection connection = factory.newConnection();
    Channel listeningChannel = connection.createChannel();
    Channel sendingChannel = connection.createChannel();

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

    Consumer consumer = new DefaultConsumer(listeningChannel) {
        @Override
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            message = new String(body, "UTF-8");
            System.out.println(" [x] Received '" + message + "'");

            String[] arr = message.split(",");

            String banks = getBanks(arr[0], Integer.parseInt(arr[1]), Double.parseDouble(arr[2]),
                    Integer.parseInt(arr[3]));

            message += "," + banks;

            System.out.println(message);

            sendingChannel.queueDeclare(SENDING_QUEUE_NAME, false, false, false, null);
            sendingChannel.basicPublish("", SENDING_QUEUE_NAME, null, message.getBytes());

        }
    };
    listeningChannel.basicConsume(LISTENING_QUEUE_NAME, true, consumer);

}

---

From source file:getcreditscore.GetCreditScore.java

public static void main(String[] args) throws IOException, TimeoutException {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("datdb.cphbusiness.dk");
    factory.setUsername("Dreamteam");
    factory.setPassword("bastian");

    Connection connection = factory.newConnection();
    Channel sendingChannel = connection.createChannel();
    Channel listeningChannel = connection.createChannel();

    listeningChannel.queueDeclare(LISTENING_QUEUE_NAME, false, false, false, null);

    Consumer consumer = new DefaultConsumer(listeningChannel) {
        @Override/* ww  w. ja  v a 2 s . c om*/
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            message = new String(body, "UTF-8");
            System.out.println(" [x] Received '" + message + "'");

            String[] arr = message.split(",");

            sendingChannel.queueDeclare(SENDING_QUEUE_NAME, false, false, false, null);

            String message = arr[0] + "," + creditScore(arr[0]) + "," + arr[1] + "," + arr[2];

            sendingChannel.basicPublish("", SENDING_QUEUE_NAME, null, message.getBytes());
            System.out.println(" [x] Sent '" + message + "'");

        }
    };

    listeningChannel.basicConsume(LISTENING_QUEUE_NAME, true, consumer);
}

---

From source file:in.cs654.chariot.ashva.AshvaServer.java

License:Open Source License

public static void main(String[] args) {
    Connection connection = null;
    Channel channel;
    try {/*ww w.  j  av  a2  s .  c om*/
        final ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(HOST_IP_ADDR);
        connection = factory.newConnection();
        channel = connection.createChannel();
        channel.queueDeclare(RPC_QUEUE_NAME, false, false, false, null);
        channel.basicQos(1);

        final QueueingConsumer consumer = new QueueingConsumer(channel);
        channel.basicConsume(RPC_QUEUE_NAME, false, consumer);
        LOGGER.info("Ashva Server started. Waiting for requests...");

        AshvaHelper.joinOrStartChariotPool();
        AshvaHelper.startHeartbeat();

        while (true) {
            final QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            BasicResponse response = new BasicResponse();
            BasicRequest request = new BasicRequest();
            final BasicProperties props = delivery.getProperties();
            final BasicProperties replyProps = new BasicProperties.Builder()
                    .correlationId(props.getCorrelationId()).build();
            try {
                final DatumReader<BasicRequest> avroReader = new SpecificDatumReader<BasicRequest>(
                        BasicRequest.class);
                decoder = DecoderFactory.get().binaryDecoder(delivery.getBody(), decoder);
                request = avroReader.read(request, decoder);
                response = AshvaProcessor.process(request);

            } catch (Exception e) {
                e.printStackTrace();
                LOGGER.severe("Error in handling request: " + e.getMessage());
                response = ResponseFactory.getErrorResponse(request);

            } finally {
                baos.reset();
                final DatumWriter<BasicResponse> avroWriter = new SpecificDatumWriter<BasicResponse>(
                        BasicResponse.class);
                encoder = EncoderFactory.get().binaryEncoder(baos, encoder);
                avroWriter.write(response, encoder);
                encoder.flush();
                LOGGER.info("Responding to request id " + request.getRequestId() + " " + response.getStatus());
                channel.basicPublish("", props.getReplyTo(), replyProps, baos.toByteArray());
                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        LOGGER.severe("Error in RPC server: " + e.getMessage());
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (Exception ignore) {
            }
        }
    }
}

---

From source file:in.cs654.chariot.prashti.PrashtiServer.java

License:Open Source License

public static void main(String[] args) {
    Connection connection = null;
    Channel channel;
    try {/*from  ww w.j  av a  2 s  .c om*/
        final ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(HOST_IP_ADDR);
        connection = factory.newConnection();
        channel = connection.createChannel();
        channel.queueDeclare(RPC_QUEUE_NAME, false, false, false, null);
        channel.basicQos(1);

        final QueueingConsumer consumer = new QueueingConsumer(channel);
        channel.basicConsume(RPC_QUEUE_NAME, false, consumer);
        LOGGER.info("Prashti Server started. Waiting for requests...");

        final List<Prashti> prashtiList = D2Client.getOnlinePrashtiServers();
        final String ipAddr = CommonUtils.getIPAddress();
        prashtiList.add(new Prashti(ipAddr));
        LOGGER.info("Notifying D2 to set Prashti Server IP Address");
        D2Client.setPrashtiServers(prashtiList);

        while (true) {
            final QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            BasicResponse response = new BasicResponse();
            BasicRequest request = new BasicRequest();
            final BasicProperties props = delivery.getProperties();
            final BasicProperties replyProps = new BasicProperties.Builder()
                    .correlationId(props.getCorrelationId()).build();
            try {
                final DatumReader<BasicRequest> avroReader = new SpecificDatumReader<BasicRequest>(
                        BasicRequest.class);
                decoder = DecoderFactory.get().binaryDecoder(delivery.getBody(), decoder);
                request = avroReader.read(request, decoder);
                response = RequestProcessor.process(request);

            } catch (Exception e) {
                e.printStackTrace();
                LOGGER.severe("Error in handling request: " + e.getMessage());
                response = ResponseFactory.getErrorResponse(request);

            } finally {
                baos.reset();
                final DatumWriter<BasicResponse> avroWriter = new SpecificDatumWriter<BasicResponse>(
                        BasicResponse.class);
                encoder = EncoderFactory.get().binaryEncoder(baos, encoder);
                avroWriter.write(response, encoder);
                encoder.flush();
                LOGGER.info("Responding to request id " + request.getRequestId() + " " + response.getStatus());
                channel.basicPublish("", props.getReplyTo(), replyProps, baos.toByteArray());
                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        LOGGER.severe("Error in RPC server: " + e.getMessage());
    } finally {
        if (connection != null) {
            try {
                connection.close();
            } catch (Exception ignore) {
            }
        }
    }
}

---

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