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:org.atmosphere.plugin.rabbitmq.RabbitMQBroadcaster.java

License:Apache License

void restartConsumer() {
    try {//from   w ww.  java 2  s .  c om
        final String id = getID();

        if (consumerTag != null) {
            logger.debug("Delete consumer {}", consumerTag);
            channel.basicCancel(consumerTag);
            consumerTag = null;
        }

        if (queueName != null) {
            logger.debug("Delete queue {}", queueName);
            channel.queueUnbind(queueName, exchangeName, id);
            channel.queueDelete(queueName);
            queueName = null;
        }

        queueName = channel.queueDeclare().getQueue();
        channel.queueBind(queueName, exchangeName, id);

        logger.info("Create AMQP consumer on queue {}, for routing key {}", queueName, id);

        DefaultConsumer queueConsumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                    byte[] body) throws IOException {

                // Not for us.
                if (!envelope.getRoutingKey().equalsIgnoreCase(id))
                    return;

                String message = new String(body);
                try {
                    Object newMsg = filter(message);
                    // if newSgw == null, that means the message has been filtered.
                    if (newMsg != null) {
                        deliverPush(new Entry(newMsg,
                                new BroadcasterFuture<Object>(newMsg, RabbitMQBroadcaster.this), message),
                                true);
                    }
                } catch (Throwable t) {
                    logger.error("failed to push message: " + message, t);
                }
            }
        };

        consumerTag = channel.basicConsume(queueName, true, queueConsumer);
        logger.info("Consumer " + consumerTag + " for queue {}, on routing key {}", queueName, id);

    } catch (Throwable ex) {
        String msg = "Unable to initialize RabbitMQBroadcaster";
        logger.error(msg, ex);
        throw new IllegalStateException(msg, ex);
    }
}

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From source file:org.atmosphere.samples.pubsub.rabbitmq.RabbitMQBroadcaster.java

License:Apache License

void restartConsumer() {

    if (!isInitialized) {
        initialize(getID(), config);//ww w. jav a  2 s . c o m
    }

    try {
        final String id = getID();

        if (consumerTag != null) {
            logger.debug("Delete consumer {}", consumerTag);
            channel.basicCancel(consumerTag);
            consumerTag = null;
        }

        if (queueName != null) {
            logger.debug("Delete queue {}", queueName);
            channel.queueUnbind(queueName, exchangeName, id);
            channel.queueDelete(queueName);
            queueName = null;
        }

        queueName = channel.queueDeclare().getQueue();
        channel.queueBind(queueName, exchangeName, id);

        logger.info("Create AMQP consumer on queue {}, for routing key {}", queueName, id);

        DefaultConsumer queueConsumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                    byte[] body) throws IOException {

                // Not for us.
                if (!envelope.getRoutingKey().equalsIgnoreCase(id))
                    return;

                String message = new String(body);
                try {
                    Object newMsg = filter(message);
                    // if newSgw == null, that means the message has been filtered.
                    if (newMsg != null) {
                        deliverPush(new Deliver(newMsg, new BroadcasterFuture<Object>(newMsg), message), true);
                    }
                } catch (Throwable t) {
                    logger.error("failed to push message: " + message, t);
                }
            }
        };

        consumerTag = channel.basicConsume(queueName, true, queueConsumer);
        logger.info("Consumer " + consumerTag + " for queue {}, on routing key {}", queueName, id);

    } catch (Throwable ex) {
        String msg = "Unable to initialize RabbitMQBroadcaster";
        logger.error(msg, ex);
        throw new IllegalStateException(msg, ex);
    }
}

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From source file:org.atmosphere.samples.websockethub.RabbitMQRouter.java

License:Apache License

private void routeIn() {
    try {/*from   ww  w  . j av a2  s .c  o  m*/
        if (consumerTag != null) {
            logger.debug("Delete consumer {}", consumerTag);
            channel.basicCancel(consumerTag);
            consumerTag = null;
        }

        if (queueName != null) {
            logger.debug("Delete queue {}", queueName);
            for (String k : amqRoutingKey) {
                channel.queueUnbind(queueName, exchangeName, k);
            }
            channel.queueDelete(queueName);
            queueName = null;
        }

        queueName = channel.queueDeclare().getQueue();
        for (String k : amqRoutingKey) {
            channel.queueBind(queueName, exchangeName, k);
        }

        logger.info("Create AMQP consumer on queue {}, for routing key {}", queueName, amqRoutingKey);

        DefaultConsumer queueConsumer = new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                    byte[] body) throws IOException {

                // Not for us.
                //                    if (!amqRoutingKey.contains(envelope.getRoutingKey())) {
                //                        logger.debug("Invalid RoutingKey {}. Available one {}", envelope.getRoutingKey(), amqRoutingKey);
                //                        return;
                //                    }

                try {
                    JsonNode rootNode = oMapper.readValue(body, JsonNode.class);
                    String key = rootNode.get("routingKey").asText();
                    if (key == null) {
                        logger.error("Missing key {}", new String(body));
                        return;
                    }

                    String message = rootNode.get("message").asText();

                    if (message == null) {
                        logger.error("Missing message {}", new String(body));
                        return;
                    }

                    if (message.isEmpty()) {
                        message = rootNode.get("message").toString();
                    }

                    // Retrieve the Broadcaster associated with this message
                    Broadcaster b = mapper.map(key, broadcasters);
                    if (b == null) {
                        logger.warn("No Broadcaster Found for Message {}", message);
                    } else {
                        b.broadcast(message);
                    }
                } catch (Exception ex) {
                    logger.error("", ex);
                    logger.error("Unable to decode {}", new String(body));
                }
            }
        };

        consumerTag = channel.basicConsume(queueName, true, queueConsumer);
        logger.info("Consumer " + consumerTag + " for queue {}, on routing key {}", queueName, amqRoutingKey);

    } catch (Throwable ex) {
        String msg = "Unable to initialize RabbitMQBroadcaster";
        logger.error(msg, ex);
        throw new IllegalStateException(msg, ex);
    }
}

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From source file:org.axonframework.eventhandling.amqp.spring.ExtendedMessageListenerContainerTest.java

License:Apache License

@Test
public void testExclusiveByDefault() throws IOException {
    testSubject.setConnectionFactory(connectionFactory);

    testSubject.getConnectionFactory().createConnection().createChannel(true).basicConsume("test",
            new DefaultConsumer(channel));

    verify(channel, never()).basicConsume(isA(String.class), isA(Consumer.class));
    verify(channel, never()).basicConsume(isA(String.class), anyBoolean(), isA(Consumer.class));
    verify(channel, never()).basicConsume(isA(String.class), anyBoolean(), anyString(), isA(Consumer.class));
    verify(channel, never()).basicConsume(isA(String.class), anyBoolean(), anyString(), anyBoolean(), eq(false),
            anyMap(), isA(Consumer.class));
    verify(channel).basicConsume(isA(String.class), anyBoolean(), anyString(), anyBoolean(), eq(true), anyMap(),
            isA(Consumer.class));
}

---

From source file:org.axonframework.eventhandling.amqp.spring.ExtendedMessageListenerContainerTest.java

License:Apache License

@Test
public void testNonExclusive() throws IOException {
    testSubject.setConnectionFactory(connectionFactory);
    testSubject.setExclusive(false);//from  ww w . j av a  2 s  .c o  m

    testSubject.getConnectionFactory().createConnection().createChannel(true).basicConsume("test",
            new DefaultConsumer(channel));

    verify(channel, never()).basicConsume(isA(String.class), anyBoolean(), anyString(), anyBoolean(), eq(true),
            anyMap(), isA(Consumer.class));
}

---

From source file:org.ballerinalang.messaging.rabbitmq.nativeimpl.channel.listener.Start.java

License:Open Source License

/**
 * Receive messages from the RabbitMQ server.
 *
 * @param resource  Ballerina resource function.
 * @param channel   RabbitMQ Channel object.
 * @param queueName Name of the queue messages are consumed from.
 * @param autoAck   True if the server should consider messages acknowledged once delivered;
 *                  false if the server should expect explicit acknowledgements.
 *///from  w  w  w  .j a  v  a  2  s  .  c o m
private void receiveMessages(Resource resource, Channel channel, String queueName, boolean autoAck) {
    try {
        channel.basicConsume(queueName, autoAck, new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                    byte[] body) throws IOException {
                dispatchMessage(resource, body, channel, envelope.getDeliveryTag(), autoAck);
            }
        });
    } catch (IOException exception) {
        throw new BallerinaException(exception);
    }
}

---

From source file:org.eclipse.flux.client.impl.RabbitMQMessageConnector.java

License:Open Source License

private String createInbox() throws IOException {
    DeclareOk ok = this.channel.queueDeclare("", /*durable*/ false, /*exclusive*/false, /*autoDelete*/true,
            null);//ww  w .  j  a  va2 s .co m
    final String inbox = ok.getQueue();
    console.log("Inbox created: " + inbox);
    channel.basicConsume(inbox, new DefaultConsumer(channel) {
        @Override
        public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties,
                byte[] body) throws IOException {
            try {
                JSONObject obj = JSON.parse(body);
                if (!isSelfOriginated(obj)) {
                    handleIncomingMessage(obj.getString("type"), obj.getJSONObject("data"));
                }
            } catch (Exception e) {
                console.log(e);
            }
        }

        /**
         * Tests whether an incoming message originated from the same MessageConnector that
         * is receiving it. (Such messages are skipped in keeping with how socketio does the same
         * thing).
         */
        private boolean isSelfOriginated(JSONObject obj) {
            try {
                String origin = obj.getString("origin");
                return inbox.equals(origin);
            } catch (Exception e) {
                console.log(e);
            }
            return false;
        }
    });
    return inbox;
}

---

From source file:org.eclipse.hono.client.AmqpConnectorClient.java

License:Open Source License

private void declareBindQueue() throws IOException {
    channel = connectionManager.getChannel();
    channel.queueDeclare(clientId, true, false, false, emptyMap());
    LOGGER.info("declared a queue with subject " + clientId);
    channel.queueBind(clientId, OUT, clientId);
    LOGGER.info("bind queue to routingkey " + clientId);
    consumerTag = channel.basicConsume(clientId, new DefaultConsumer(channel) {
        @Override//from  w  w  w .j a  v a 2s  . c  om
        public void handleDelivery(final String consumerTag, final Envelope envelope,
                final AMQP.BasicProperties properties, final byte[] body) throws IOException {
            final String routingKey = envelope.getRoutingKey();
            getChannel().basicAck(envelope.getDeliveryTag(), false);
            final String topic = properties.getHeaders().get(TOPIC_HEADER).toString();
            LOGGER.debug("{} received message for topic '{}'", routingKey, topic);
            delegateToTopicConsumer(properties, body, topic);
        }
    });
}

---

From source file:org.eclipse.hono.dispatcher.amqp.DefaultAmqpHelper.java

License:Open Source License

@Override
public String consume(final String queue, final Consumer<QueueingConsumer.Delivery> consumer) {
    try {//  ww w .j av  a2 s  .  c o  m
        DefaultAmqpHelper.LOGGER.debug("Subscribing to {} on channel {}.", queue, channel.getChannelNumber());
        return channel.basicConsume(queue, false, new DefaultConsumer(channel) {
            @Override
            public void handleDelivery(final String consumerTag, final Envelope envelope,
                    final AMQP.BasicProperties properties, final byte[] body) throws IOException {
                try {
                    DefaultAmqpHelper.LOGGER.trace("Received delivery {} on channel {}.", envelope,
                            channel.getChannelNumber());
                    final QueueingConsumer.Delivery delivery = new QueueingConsumer.Delivery(envelope,
                            properties, body);
                    consumer.accept(delivery);
                } catch (final Exception e) {
                    DefaultAmqpHelper.LOGGER.warn("Exception in consumer: {}", e);
                }
            }
        });
    } catch (final IOException e) {
        throw new AmqpException("Could not subscribe to queue " + queue, e);
    }
}

---

From source file:org.geoserver.notification.support.Receiver.java

License:Open Source License

private DefaultConsumer newConsumer(Channel channel) {
    return new DefaultConsumer(channel) {
        @Override// ww w .j  a v  a  2s. c om
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            service.manage(body);
        }
    };
}

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