Example usage for com.rabbitmq.client Connection createChannel

List of usage examples for com.rabbitmq.client Connection createChannel

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Introduction

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

Prototype

Channel createChannel() throws IOException;

Source Link

Document

Create a new channel, using an internally allocated channel number.

Usage

From source file:com.gemini.provision.network.main.GeminiNetworkProvisionMain.java

public static void main(String[] args) {

    //activate logging level if it is DEBUG, default is INFO so no need for any
    //action if it is otherwise
    Injector propInjector = Guice.createInjector(new GeminiPropertiesModule());
    GeminiProperties properties = propInjector.getInstance(GeminiProperties.class);
    if (properties.getProperties().getProperty("LOGGING_LEVEL").equals("DEBUG")) {
        Configurator.defaultConfig().level(Level.DEBUG).activate();
    }//from  w w w.j  av  a  2 s .  c  o m

    //inject the mapper as it will be used in all the threads
    Injector mapperInjector = Guice.createInjector(new GeminiMapperModule());
    mapper = mapperInjector.getInstance(GeminiMapper.class);

    //the app.yml to deployment.yml converter
    Thread yamlConverterThread = new Thread(() -> {
        //setup the message receiver
        final Connection connection;
        final Channel channel;
        final QueueingConsumer consumer;

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(properties.getProperties().getProperty("MESSAGING_HOST"));
        String queueName = null;
        try {
            connection = factory.newConnection();
            channel = connection.createChannel();
            channel.exchangeDeclare(properties.getProperties().getProperty("EXCHANGE_NAME"), "topic");
            queueName = channel.queueDeclare().getQueue();
            channel.queueBind(queueName, properties.getProperties().getProperty("EXCHANGE_NAME"),
                    properties.getProperties().getProperty("YAML_MAPPER_TOPIC"));
            consumer = new QueueingConsumer(channel);
            channel.basicConsume(queueName, true, consumer);
        } catch (IOException | NullPointerException | NumberFormatException ex) {
            Logger.error("Fatal Error: YAML Mapper - could not connect to messaging system. Exception: {}", ex);
            return;
        }

        QueueingConsumer.Delivery delivery = null;
        while (true) {
            try {
                delivery = consumer.nextDelivery();
            } catch (InterruptedException | ShutdownSignalException | ConsumerCancelledException ex) {
                Logger.error("Fatal Error: YAML Mapper - could not retrieve message. Exception: {}", ex);
                continue;
            }

            String routingKey = delivery.getEnvelope().getRoutingKey();
            String jsonBody = new String(delivery.getBody());

            //TODO: NEED TO PUT THE MESSAGE BACK IN THE QUEUE IF THERE IS A FAILURE
            Integer status = 0;
            if (routingKey.equals(properties.getProperties().getProperty("YAML_MAPPER_MAP_APP"))) {
                status = mapApptoDeployment(jsonBody);
            } else {
                continue;
            }

            if (status == 0) {
                try {
                    channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
                } catch (IOException ex) {
                    Logger.error("Could not ack message. Exception: {}", ex);
                }
            } else {
                //failed so requeue the message
                try {
                    channel.basicNack(delivery.getEnvelope().getDeliveryTag(), false, true);
                } catch (IOException ex) {
                    Logger.error("Could not nack message. Exception: {}", ex);
                }
            }
        }
    });
    yamlConverterThread.start();

    //the networking message recevier
    Thread networkingThread = new Thread(() -> {
        //setup the message receiver
        final Connection connection;
        final Channel channel;
        final QueueingConsumer consumer;

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(properties.getProperties().getProperty("MESSAGING_HOST"));
        String queueName = null;
        try {
            connection = factory.newConnection();
            channel = connection.createChannel();
            channel.exchangeDeclare(properties.getProperties().getProperty("EXCHANGE_NAME"), "topic");
            queueName = channel.queueDeclare().getQueue();
            channel.queueBind(queueName, properties.getProperties().getProperty("EXCHANGE_NAME"),
                    properties.getProperties().getProperty("NETWORK_TOPIC"));
            //                channel.basicQos(Integer.parseUnsignedInt(properties.getProperties().getProperty("PREFETCH_COUNT")));
            consumer = new QueueingConsumer(channel);
            channel.basicConsume(queueName, true, consumer);
        } catch (IOException | NullPointerException | NumberFormatException ex) {
            Logger.error("Fatal Error: could not connect to messaging system. Exception: {}", ex);
            return;
        }

        QueueingConsumer.Delivery delivery = null;
        while (true) {
            try {
                delivery = consumer.nextDelivery();
            } catch (InterruptedException | ShutdownSignalException | ConsumerCancelledException ex) {
                Logger.error("Could not get message from queue. Exception: {}", ex);

                //TODO: NEED TO PUT THE MESSAGE BACK IN THE QUEUE
                continue;
            }

            String routingKey = delivery.getEnvelope().getRoutingKey();
            String jsonBody = new String(delivery.getBody());

            //TODO: NEED TO PUT THE MESSAGE BACK IN THE QUEUE IF THERE IS A FAILURE
            if (routingKey.equals(properties.getProperties().getProperty("NETWORK_TASK_CREATE"))) {
                createNetwork(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("NETWORK_TASK_UPDATE"))) {
                updateNetwork(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("NETWORK_TASK_DELETE"))) {
                deleteNetwork(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("SUBNET_TASK_CREATE"))) {
                createSubnet(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("SUBNET_TASK_UPDATE"))) {
                updateSubnet(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("SUBNET_TASK_DELETE"))) {
                deleteSubnet(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("ROUTER_TASK_CREATE"))) {
                createRouter(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("ROUTER_TASK_UPDATE"))) {
                updateRouter(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("ROUTER_TASK_DELETE"))) {
                deleteRouter(jsonBody);
            }

            try {
                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            } catch (IOException ex) {
                Logger.error("Could not ack message. Exception: {}", ex);
            }
        }
    });
    networkingThread.start();

    //the load balancer 
    Thread lbThread = new Thread(() -> {
    });

    lbThread.start();

    //the security thread
    Thread securityThread = new Thread(() -> {
        //setup the message receiver
        final Connection connection;
        final Channel channel;
        final QueueingConsumer consumer;

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(properties.getProperties().getProperty("MESSAGING_HOST"));
        String queueName = null;
        try {
            connection = factory.newConnection();
            channel = connection.createChannel();
            channel.exchangeDeclare(properties.getProperties().getProperty("EXCHANGE_NAME"), "topic");
            queueName = channel.queueDeclare().getQueue();
            channel.queueBind(queueName, properties.getProperties().getProperty("EXCHANGE_NAME"),
                    properties.getProperties().getProperty("SECURITY_TOPIC"));
            //                channel.basicQos(Integer.parseUnsignedInt(properties.getProperties().getProperty("PREFETCH_COUNT")));
            consumer = new QueueingConsumer(channel);
            channel.basicConsume(queueName, true, consumer);
        } catch (IOException | NullPointerException | NumberFormatException ex) {
            Logger.error("Fatal Error: could not connect to messaging system. Exception: {}", ex);
            return;
        }

        QueueingConsumer.Delivery delivery = null;
        while (true) {
            try {
                delivery = consumer.nextDelivery();
            } catch (InterruptedException | ShutdownSignalException | ConsumerCancelledException ex) {
                Logger.error("Could not get message from queue. Exception: {}", ex);
                continue;
            }

            String routingKey = delivery.getEnvelope().getRoutingKey();
            String jsonBody = new String(delivery.getBody());

            //TODO: NEED TO PUT THE MESSAGE BACK IN THE QUEUE IF THERE IS A FAILURE
            if (routingKey.equals(properties.getProperties().getProperty("SECURITY_TASK_SG_CREATE"))) {
                createSecurityGroup(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("SECURITY_TASK_SG_UPDATE"))) {
                updateSecurityGroup(jsonBody);
            } else if (routingKey.equals(properties.getProperties().getProperty("SECURITY_TASK_SG_DELETE"))) {
                deleteSecurityGroup(jsonBody);
            } else if (routingKey
                    .equals(properties.getProperties().getProperty("SECURITY_TASK_SG_RULE_CREATE"))) {
                createSecurityGroupRule(jsonBody);
            } else if (routingKey
                    .equals(properties.getProperties().getProperty("SECURITY_TASK_SG_RULE_UPDATE"))) {
                updateSecurityGroupRule(jsonBody);
            } else if (routingKey
                    .equals(properties.getProperties().getProperty("SECURITY_TASK_SG_RULE_DELETE"))) {
                deleteSecurityGroupRule(jsonBody);
            }

            try {
                channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
            } catch (IOException ex) {
                Logger.error("Could not ack message. Exception: {}", ex);
            }
        }
    });
    securityThread.start();
}

From source file:com.github.dann.wspusher.pubsub.publisher.impl.RabbitMQPublisherImpl.java

License:Apache License

public void publish(String exchange, String message) {
    Connection connection = null;
    Channel channel = null;//from   w  ww.  j  a  va 2 s .  com
    try {
        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(WsConfig.getMQServerHost());
        connection = factory.newConnection();
        channel = connection.createChannel();
        channel.exchangeDeclare(exchange, EXCHANGE_TYPE);
        channel.basicPublish(exchange, "", null, message.getBytes(WsConstants.ENCODING_UTF8));

    } catch (Exception e) {
        logger.error("Publishing message faile", e);
        throw new WsRuntimeException("Publishig message failed", e);
    } finally {
        RabbitMQResourceUtils.closeQuietly(channel);
        RabbitMQResourceUtils.closeQuietly(connection);
    }

}

From source file:com.github.dann.wspusher.pubsub.subscriber.impl.RabbitMQSubscriberImpl.java

License:Apache License

@Override
public void subscribe(String exchange, DataPusherWebSocket webSocket) {
    Connection connection = null;
    Channel channel = null;/*  w  w w.  ja va 2  s.  c om*/

    try {
        // FIXME Cache connection!
        ConnectionFactory factory = new ConnectionFactory();
        connection = factory.newConnection();
        channel = connection.createChannel();

        channel.exchangeDeclare(exchange, DEFAULT_EXCHANGE_TYPE);
        String queueName = channel.queueDeclare().getQueue();
        channel.queueBind(queueName, exchange, "");
        QueueingConsumer consumer = new QueueingConsumer(channel);
        channel.basicConsume(queueName, true, consumer);

        doWork(consumer, webSocket);

    } catch (Exception e) {
        logger.error("Error occured", e);
        throw new WsRuntimeException(e);

    } finally {
        RabbitMQResourceUtils.closeQuietly(channel);
        RabbitMQResourceUtils.closeQuietly(connection);
    }

}

From source file:com.github.hexsmith.rabbitmq.consumer.MessageConsumer.java

License:Open Source License

public boolean consume(String queueName) {
    //RabbitMQ//w ww . ja  v a  2s.c  o  m
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("127.0.0.1");
    Connection connection = null;
    Channel channel = null;
    try {
        connection = factory.newConnection();
        channel = connection.createChannel();
        //queue??queue
        //?queueDeclare???queue
        channel.queueDeclare(queueName, false, false, false, null);

        //?DefaultConsumerhandleDelivery???getByte()???String
        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");
                logger.info("Received '" + message + "'");
            }
        };
        //??
        channel.basicConsume(queueName, true, consumer);

        //???rabbitMQ

    } catch (IOException | TimeoutException e) {
        //?false
        logger.error("send message failed!", e);
        return false;
    }

    return true;
}

From source file:com.github.hexsmith.rabbitmq.consumer.MultiMessageConsumer.java

License:Open Source License

public boolean consume(String queueName, String consumerName) {
    //RabbitMQ//from  w  ww  .ja  v  a2s  .  com
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("127.0.0.1");
    Connection connection = null;
    Channel channel = null;
    try {
        connection = factory.newConnection();
        channel = connection.createChannel();
        //queue??queue
        //?queueDeclare???queue
        channel.queueDeclare(queueName, false, false, false, null);

        //?DefaultConsumerhandleDelivery???getByte()???String
        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");
                logger.info("[{}]" + "Received '" + message + "'", consumerName);
            }
        };
        //??
        channel.basicConsume(queueName, true, consumer);

        //???rabbitMQ

    } catch (IOException | TimeoutException e) {
        //?false
        logger.error("send message failed!", e);
        return false;
    }

    return true;
}

From source file:com.github.hexsmith.rabbitmq.producer.MessageProducer.java

License:Open Source License

public boolean sendMessage(String message) {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("127.0.0.7");
    Connection connection = null;
    Channel channel = null;/*from   ww  w .  j av  a  2 s  .c o  m*/
    try {
        connection = factory.newConnection();
        channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        channel.basicPublish("", QUEUE_NAME, null, message.getBytes());
        logger.info("send message = {}", message);
        channel.close();
        connection.close();
    } catch (IOException | TimeoutException e) {
        logger.error("send message failed!,exception message is {}", e);
        return false;
    }
    return true;
}

From source file:com.github.hexsmith.rabbitmq.producer.MessageProducer.java

License:Open Source License

public boolean sendMulitMessage(String message) {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("127.0.0.7");
    Connection connection = null;
    Channel channel = null;/*from ww  w  .  jav  a 2  s.c om*/
    try {
        connection = factory.newConnection();
        channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        int i = 0;
        int loop = 0;
        String originalMessage = message;
        while (loop < 10000) {
            loop++;
            message += i++;
            channel.basicPublish("", QUEUE_NAME, null, message.getBytes());
            logger.info("send message = {}", message);
            try {
                Thread.sleep(5000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            message = originalMessage;
        }

        channel.close();
        connection.close();
    } catch (IOException | TimeoutException e) {
        logger.error("send message failed!,exception message is {}", e);
        return false;
    }
    return true;
}

From source file:com.github.kislayverma.dredd.action.async.amqp.AmqpActionQueue.java

License:Apache License

public AmqpActionQueue(ConnectionFactory factory, String queue, String exchange, String routingKey)
        throws IOException, TimeoutException {
    this.factory = factory;
    this.queue = queue;
    this.exchange = exchange;
    this.routingKey = routingKey;

    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    channel.exchangeDeclare(exchange, "direct", true);
    channel.queueDeclare(queue, true, false, false, null);
    channel.queueBind(queue, exchange, routingKey);
}

From source file:com.github.kislayverma.dredd.action.async.amqp.AmqpActionQueue.java

License:Apache License

@Override
public void submitTask(AsyncExecutionRequest request) throws AsyncTaskSubmissionException {
    try {/*www. j a va  2  s. c o m*/
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();
        channel.basicPublish(this.exchange, this.routingKey, null, serialize(request));
    } catch (IOException | TimeoutException ex) {
        LOGGER.error("Failed to submit action execution request", ex);
        throw new AsyncTaskSubmissionException();
    }
}

From source file:com.github.kislayverma.dredd.action.async.amqp.AmqpActionQueue.java

License:Apache License

@Override
public AsyncExecutionRequest getTask() throws AsyncTaskConsumptionException {
    try {//from ww w  .ja va 2  s .  c  o  m
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();
        GetResponse response = channel.basicGet(this.queue, false);
        if (response != null) {
            AsyncExecutionRequest message = deserialize(response.getBody());

            long deliveryTag = response.getEnvelope().getDeliveryTag();
            channel.basicAck(deliveryTag, true);

            return message;
        }
    } catch (IOException | TimeoutException | ClassNotFoundException ex) {
        LOGGER.error("Failed to read message from the queue", ex);
        throw new AsyncTaskConsumptionException();
    }

    return null; // Won't ever reach here
}