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:ms.dew.core.cluster.spi.rabbit.RabbitClusterMQ.java

License:Apache License

/**
 * MQ ??  .//from   ww  w  .  jav a2 s .c  om
 * <p>
 * exchange = fanout
 * ??
 *
 * @param topic    
 * @param consumer ?
 */
@Override
protected void doSubscribe(String topic, Consumer<String> consumer) {
    Channel channel = rabbitAdapter.getConnection().createChannel(false);
    try {
        channel.exchangeDeclare(topic, BuiltinExchangeType.FANOUT, true);
        String queueName = channel.queueDeclare().getQueue();
        channel.queueBind(queueName, topic, "");
        channel.basicQos(1);
        channel.basicConsume(queueName, false,
                getDefaultConsumer(channel, topic, topic, "", queueName, consumer));
    } catch (IOException e) {
        logger.error("[MQ] Rabbit response error.", e);
    }
}

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From source file:ms.dew.core.cluster.spi.rabbit.RabbitClusterMQ.java

License:Apache License

/**
 * MQ ??  .//  w  ww .  j av  a2  s . c  o m
 * <p>
 * exchange = topic
 * ??
 *
 * @param topic      
 * @param routingKey Key
 * @param queueName  ??
 * @param consumer   ?
 */
public void subscribeWithTopic(String topic, String routingKey, String queueName, Consumer<String> consumer) {
    Channel channel = rabbitAdapter.getConnection().createChannel(false);
    try {
        channel.queueDeclare(queueName, true, false, false, null);
        channel.exchangeDeclare(topic, BuiltinExchangeType.TOPIC, true);
        channel.queueBind(queueName, topic, routingKey);
        channel.basicQos(1);
        channel.basicConsume(queueName, false,
                getDefaultConsumer(channel, topic, topic, routingKey, queueName, consumer));
    } catch (IOException e) {
        logger.error("[MQ] Rabbit subscribeWithTopic error.", e);
    }
}

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From source file:ms.dew.core.cluster.spi.rabbit.RabbitClusterMQ.java

License:Apache License

@Override
protected void doResponse(String address, Consumer<String> consumer) {
    Channel channel = rabbitAdapter.getConnection().createChannel(false);
    try {//from   w  w  w. j a v  a2s. c o m
        channel.queueDeclare(address, true, false, false, null);
        channel.basicQos(1);
        channel.basicConsume(address, false,
                getDefaultConsumer(channel, address, "", address, address, consumer));
    } catch (IOException e) {
        logger.error("[MQ] Rabbit response error.", e);
    }
}

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From source file:mx.bigdata.utils.amqp.AMQPClientHelperImpl.java

License:Apache License

public QueueingConsumer createQueueingConsumer(Channel channel, String queue) throws Exception {
    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queue, false, consumer);
    return consumer;
}

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From source file:mx.bigdata.utils.amqp.ReconnectingConsumer.java

License:Apache License

private boolean initConsumer() {
    Channel channel = null;
    try {// www  . j  a  v a2s  .  c  o  m
        channel = amqp.declareChannel(factory, key);
        String queue = createQueue(amqp, channel, key);
        this.consumer = new DefaultConsumer(channel) {

            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                    byte[] body) throws IOException {
                ReconnectingConsumer.this.handleDelivery(consumerTag, envelope, properties, body);
            }

            @Override
            public void handleConsumeOk(String consumerTag) {
                ReconnectingConsumer.this.consumerTag = consumerTag;
            }

            @Override
            public void handleCancel(String consumerTag) throws IOException {
                logger.warn(tag + " handleCancel for consumer tag: " + consumerTag);
                try {
                    this.getChannel().basicCancel(ReconnectingConsumer.this.consumerTag);
                } catch (Exception ignore) {
                }
                this.getChannel().getConnection().abort(5000);
                reconnect();
            }

            @Override
            public void handleShutdownSignal(java.lang.String consumerTag, ShutdownSignalException sig) {
                try {
                    getChannel().basicCancel(ReconnectingConsumer.this.consumerTag);
                } catch (Exception ignore) {
                    ;
                }
                getChannel().getConnection().abort(5000);
                if (!sig.isInitiatedByApplication()) {
                    logger.warn(tag + " ShutdownSignal for tag: " + tag + "\n\t consumer tag: " + consumerTag
                            + "\n\t reason: " + sig.getReason() + "\n\t reference: " + sig.getReason()
                            + "\n\t ", sig);
                    reconnect();
                } else {
                    logger.debug(tag + " ShutdownSignal for tag: " + tag + "\n\t consumer tag: " + consumerTag
                            + "\n\t reason: " + sig.getReason() + "\n\t reference: " + sig.getReason()
                            + "\n\t ", sig);
                    consumer = null;
                }
            }
        };

        channel.basicConsume(queue, false, consumer);
        logger.info("Consumer " + tag + " initilized");
        return true;
    } catch (Throwable e) {
        logger.error("Exception initializing consumer " + tag + ": ", e);
        if (channel != null) {
            channel.getConnection().abort(5000);
        }
    }
    return false;
}

---

From source file:net.echinopsii.ariane.community.messaging.rabbitmq.ServiceFactory.java

License:Open Source License

/**
 * (internal usage)/*from  w  ww.  j a  v  a 2 s .  co  m*/
 * Create a new MomConsumer to consume message from RabbitMQ source and forward them to the request actor.
 *
 * @param source request source queue
 * @param channel RabbitMQ channel
 * @param requestActor request actor ref to treat the message
 * @param isMsgDebugOnTimeout debug on timeout if true
 * @return the new MomConsumer
 */
private static MomConsumer createConsumer(final String source, final Channel channel,
        final ActorRef requestActor, final boolean isMsgDebugOnTimeout) {
    return new MomConsumer() {
        private boolean isRunning = false;

        @Override
        public void run() {
            try {
                Map<String, Object> finalMessage;
                channel.queueDeclare(source, false, false, true, null);

                QueueingConsumer consumer = new QueueingConsumer(channel);
                channel.basicConsume(source, false, consumer);
                isRunning = true;

                while (isRunning) {
                    try {
                        QueueingConsumer.Delivery delivery = consumer.nextDelivery(10);
                        if (delivery != null && isRunning) {
                            finalMessage = translator.decode(new Message().setEnvelope(delivery.getEnvelope())
                                    .setProperties(delivery.getProperties()).setBody(delivery.getBody()));
                            if (((HashMap) finalMessage).containsKey(MomMsgTranslator.MSG_TRACE)
                                    && isMsgDebugOnTimeout)
                                ((MomLogger) log).setMsgTraceLevel(true);
                            ((MomLogger) log).traceMessage("MomConsumer(" + source + ").run", finalMessage);
                            requestActor.tell(delivery, null);
                            if (((HashMap) finalMessage).containsKey(MomMsgTranslator.MSG_TRACE)
                                    && isMsgDebugOnTimeout)
                                ((MomLogger) log).setMsgTraceLevel(false);
                        }
                    } catch (InterruptedException e) {
                        // no message
                    }
                }

            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    if (channel.getConnection() != null && channel.getConnection().isOpen()) {
                        channel.queueDelete(source);
                        //channel.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        @Override
        public boolean isRunning() {
            return isRunning;
        }

        @Override
        public void start() {
            new Thread(this).start();
        }

        @Override
        public void stop() {
            isRunning = false;
            try {
                Thread.sleep(20);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    };
}

---

From source file:net.echinopsii.ariane.community.messaging.rabbitmq.ServiceFactory.java

License:Open Source License

/**
 * Create a new subscriber service./*from w w w .  j  a  v a2  s . c om*/
 *
 * @param baseSource the feed base source
 * @param selector the selector on the feed source (can be null)
 * @param feedWorker the feed message worker
 * @return the new subscriber service
 */
@Override
public MomAkkaService subscriberService(final String baseSource, String selector, AppMsgWorker feedWorker) {
    MomAkkaService ret = null;
    ActorRef subsActor;
    MomConsumer consumer;
    final Connection connection = ((Client) super.getMomClient()).getConnection();

    if (selector == null || selector.equals(""))
        selector = "#";

    if (connection != null && connection.isOpen()) {
        subsActor = super.getMomClient().getActorSystem().actorOf(MsgSubsActor.props(feedWorker),
                baseSource + "." + ((selector.equals("#")) ? "all" : selector) + "_msgWorker");
        final ActorRef runnableSubsActor = subsActor;
        final String select = selector;
        final Client cli = ((Client) super.getMomClient());

        consumer = new MomConsumer() {
            private boolean isRunning = false;

            @Override
            public void run() {
                Channel channel = null;
                try {
                    channel = connection.createChannel();
                    channel.exchangeDeclare(baseSource, "topic");

                    String queueName = cli.getClientID() + "_SUBS_2_" + baseSource + "." + select;
                    channel.queueDeclare(queueName, false, true, false, null);
                    channel.queueBind(queueName, baseSource, select);

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

                    isRunning = true;

                    while (isRunning) {
                        try {
                            QueueingConsumer.Delivery delivery = consumer.nextDelivery(10);
                            if (delivery != null && isRunning)
                                runnableSubsActor.tell(delivery, null);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }

                    }
                    if (channel.getConnection().isOpen())
                        channel.close();

                } catch (IOException e) {
                    e.printStackTrace();
                } finally {
                    try {
                        if (channel.getConnection().isOpen())
                            channel.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }

            @Override
            public boolean isRunning() {
                return isRunning;
            }

            @Override
            public void start() {
                new Thread(this).start();
            }

            @Override
            public void stop() {
                isRunning = false;
                try {
                    Thread.sleep(20);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        };

        consumer.start();
        ret = new MomAkkaService().setMsgWorker(subsActor).setConsumer(consumer)
                .setClient(super.getMomClient());
        super.getServices().add(ret);
    }
    return ret;
}

---

From source file:nl.uva.sne.drip.drip.component_example.RPCServer.java

License:Apache License

private static void start() {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(HOST);//from   ww  w  .  j a  va2 s.  c  om
    factory.setPassword("guest");
    factory.setUsername("guest");
    factory.setPort(AMQP.PROTOCOL.PORT);
    try (Connection connection = factory.newConnection()) {
        Channel channel = connection.createChannel();
        //We define the queue name 
        channel.queueDeclare(RPC_QUEUE_NAME, false, false, false, null);
        //Set our own customized consummer 
        Consumer c = new Consumer(channel);
        //Start listening for messages 
        channel.basicConsume(RPC_QUEUE_NAME, false, c);

        //Block so we don't close the channel
        while (true) {
            try {
                Thread.sleep(100);
            } catch (InterruptedException _ignore) {
            }
        }

    } catch (IOException | TimeoutException ex) {
        Logger.getLogger(RPCServer.class.getName()).log(Level.SEVERE, null, ex);
    }

}

---

From source file:nl.uva.sne.drip.drip.provisioner.RPCServer.java

License:Apache License

private static void start() {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(PropertyValues.HOST);
    factory.setPassword("guest");
    factory.setUsername("guest");
    factory.setPort(AMQP.PROTOCOL.PORT);
    Logger.getLogger(RPCServer.class.getName()).log(Level.INFO, "Connected to: {0}", PropertyValues.HOST);
    try (Connection connection = factory.newConnection()) {
        Channel channel = connection.createChannel();
        //We define the queue name 
        channel.queueDeclare(PropertyValues.RPC_QUEUE_NAME, false, false, false, null);
        DefaultConsumer c;//from w w  w  .ja  v a 2  s  .com
        if (PropertyValues.RPC_QUEUE_NAME.endsWith("v0")) {
            c = new nl.uva.sne.drip.drip.provisioner.v0.Consumer(channel);
        } else {
            c = new nl.uva.sne.drip.drip.provisioner.v1.Consumer(channel, PropertyValues.HOST);
        }

        //Start listening for messages 
        channel.basicConsume(PropertyValues.RPC_QUEUE_NAME, false, c);

        //Block so we don't close the channel
        while (true) {
            try {
                Thread.sleep(100);
            } catch (InterruptedException _ignore) {
            }
        }

    } catch (IOException | TimeoutException ex) {
        Logger.getLogger(RPCServer.class.getName()).log(Level.SEVERE, null, ex);
    }

}

---

From source file:normalizer_two.Normalizer_Two.java

public static void main(String[] args) throws IOException, InterruptedException {
    ConnectionCreator creator = ConnectionCreator.getInstance();
    com.rabbitmq.client.Channel channelIn = creator.createChannel();
    com.rabbitmq.client.Channel channelOut = creator.createChannel();
    channelIn.queueDeclare(IN_QUEUE, false, false, false, null);
    channelOut.queueDeclare(OUT_QUEUE, false, false, false, null);

    QueueingConsumer consumer = new QueueingConsumer(channelIn);
    channelIn.basicConsume(IN_QUEUE, true, consumer);

    while (true) {
        QueueingConsumer.Delivery delivery = consumer.nextDelivery();
        //channelIn.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        System.out.println(new String(delivery.getBody()));
        System.out.println("CorrelationID" + delivery.getProperties().getCorrelationId());
        String message = translateMessage(delivery);
        BasicProperties prop = new BasicProperties().builder()
                .correlationId(delivery.getProperties().getCorrelationId()).build();
        channelOut.basicPublish("", OUT_QUEUE, prop, message.getBytes());
    }/*w w  w . ja v  a2s .  c  o  m*/
}

---

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