Example usage for com.rabbitmq.client Channel exchangeDeclare

Introduction

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

Prototype

Exchange.DeclareOk exchangeDeclare(String exchange, BuiltinExchangeType type, boolean durable)
        throws IOException;

Source Link

Document

Actively declare a non-autodelete exchange with no extra arguments

Usage

From source file:org.trpr.mule.transport.rabbitmq.EndpointUtils.java

License:Apache License

/**
 * Declares an Exchange on the specified Channel using the exchange details derived from the specified Endpoint
 *//* w w  w .j a v  a2s . com*/
public static String declareExchange(Channel channel, ImmutableEndpoint e) throws IOException {
    String exchange = EndpointUtils.getExchange(e);
    if (exchange != null) {
        channel.exchangeDeclare(exchange, EndpointUtils.getExchangeType(e), getDurable(e));
    }
    return exchange;
}

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From source file:org.wso2.carbon.event.adapter.rabbitmq.internal.util.RabbitMQEventAdapterUtils.java

License:Open Source License

/**
 * @param connection      Connection to the RabbitMQ
 * @param exchangeName    Name of the exchange
 * @param exchangeType    Type of Exchange
 * @param exchangeDurable Whether durable or not
 * @throws IOException/*ww  w  . ja  v  a2  s.com*/
 */
public static void declareExchange(Connection connection, String exchangeName, String exchangeType,
        String exchangeDurable) throws IOException, TimeoutException {
    Boolean exchangeAvailable = false;
    Channel channel = connection.createChannel();
    try {
        // check availability of the named exchange.
        // The server will raise an IOException if the named exchange already exists.
        channel.exchangeDeclarePassive(exchangeName);
        exchangeAvailable = true;
    } catch (IOException e) {
        log.info("Exchange :" + exchangeName + " not found.Declaring exchange.");
    }
    if (!exchangeAvailable) {
        // Declare the named exchange if it does not exists.
        if (!channel.isOpen()) {
            channel = connection.createChannel();
            log.debug("Channel is not open. Creating a new channel.");
        }
        try {
            if (exchangeType != null && !exchangeType.equals("")) {
                if (exchangeDurable != null && !exchangeDurable.equals("")) {
                    channel.exchangeDeclare(exchangeName, exchangeType, Boolean.parseBoolean(exchangeDurable));
                } else {
                    channel.exchangeDeclare(exchangeName, exchangeType, true);
                }
            } else {
                channel.exchangeDeclare(exchangeName, RabbitMQInputEventAdapterConstants.DEFAULT_EXCHANGE_TYPE,
                        true);
            }
        } catch (IOException e) {
            handleException("Error occurred while declaring exchange.", e);
        }
    }
    channel.close();
}

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From source file:org.wso2.carbon.extension.analytics.receiver.rabbitmq.internal.util.RabbitMQUtils.java

License:Open Source License

public static void declareExchange(Connection connection, String exchangeName, String exchangeType,
        String exchangeDurable) throws IOException {
    Boolean exchangeAvailable = false;
    Channel channel = connection.createChannel();
    try {//from  w  ww.  ja  va 2  s  . c o  m
        // check availability of the named exchange.
        // The server will raise an IOException
        // if the named exchange already exists.
        channel.exchangeDeclarePassive(exchangeName);
        exchangeAvailable = true;
    } catch (IOException e) {
        log.info("Exchange :" + exchangeName + " not found.Declaring exchange.");
    }

    if (!exchangeAvailable) {
        // Declare the named exchange if it does not exists.
        if (!channel.isOpen()) {
            channel = connection.createChannel();
            log.debug("Channel is not open. Creating a new channel.");
        }
        try {
            if (exchangeType != null && !exchangeType.equals("")) {
                if (exchangeDurable != null && !exchangeDurable.equals("")) {
                    channel.exchangeDeclare(exchangeName, exchangeType, Boolean.parseBoolean(exchangeDurable));
                } else {
                    channel.exchangeDeclare(exchangeName, exchangeType, true);
                }
            } else {
                channel.exchangeDeclare(exchangeName, "direct", true);
            }
        } catch (IOException e) {
            handleException("Error occurred while declaring exchange.", e);
        }
    }
    channel.close();
}

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From source file:org.wso2.carbon.inbound.endpoint.protocol.rabbitmq.RabbitMQUtils.java

License:Open Source License

public static void declareExchange(Connection connection, String exchangeName,
        Hashtable<String, String> properties) throws IOException {
    Boolean exchangeAvailable = false;
    Channel channel = connection.createChannel();
    String exchangeType = properties.get(RabbitMQConstants.EXCHANGE_TYPE);
    String durable = properties.get(RabbitMQConstants.EXCHANGE_DURABLE);
    try {//w  w  w.j  a  v  a  2  s. com
        // check availability of the named exchange.
        // The server will raise an IOException
        // if the named exchange already exists.
        channel.exchangeDeclarePassive(exchangeName);
        exchangeAvailable = true;
    } catch (IOException e) {
        log.info("Exchange :" + exchangeName + " not found.Declaring exchange.");
    }

    if (!exchangeAvailable) {
        // Declare the named exchange if it does not exists.
        if (!channel.isOpen()) {
            channel = connection.createChannel();
            log.debug("Channel is not open. Creating a new channel.");
        }
        try {
            if (exchangeType != null && !exchangeType.equals("")) {
                if (durable != null && !durable.equals("")) {
                    channel.exchangeDeclare(exchangeName, exchangeType, Boolean.parseBoolean(durable));
                } else {
                    channel.exchangeDeclare(exchangeName, exchangeType, true);
                }
            } else {
                channel.exchangeDeclare(exchangeName, "direct", true);
            }
        } catch (IOException e) {
            handleException("Error occurred while declaring exchange.", e);
        }
    }
    try {
        channel.close();
    } catch (TimeoutException e) {
        log.error("Error occurred while closing connection.", e);
    }
}

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From source file:ox.softeng.burst.service.message.RabbitMessageService.java

@Override
public void run() {
    for (int c = 0; c < consumerCount; c++) {
        try {/* w w w  . j  a v a  2  s .  co  m*/
            Channel channel = connection.createChannel();
            channel.basicQos(40);
            channel.exchangeDeclare(exchange, "topic", true);
            Consumer consumer = new MessageConsumer(channel, entityManagerFactory);
            channel.basicConsume(queue, true, consumer);
        } catch (IOException e) {
            logger.error("Error running consumer for queue '" + queue + "'", e);
        } catch (Exception e) {
            logger.error("Unhandled exception: " + e.getMessage(), e);
        }
    }
}

---

From source file:ox.softeng.burst.services.RabbitService.java

License:Open Source License

public void run() {
    try {//from  w ww  .j  a  v a2  s .com
        Channel channel = connection.createChannel();
        channel.basicQos(40);
        channel.exchangeDeclare(rabbitMQExchange, "topic", true);
        Consumer consumer = createConsumer(channel);
        logger.warn("Waiting for messages");
        channel.basicConsume(rabbitMQQueue, true, consumer);
    } catch (IOException e) {
        logger.error("Error running consumer for queue '" + rabbitMQQueue + "'", e);
    } catch (Exception e) {
        logger.error("Unhandled exception: " + e.getMessage(), e);
    }
}

---

From source file:ox.softeng.gel.filereceive.FileReceive.java

public void generateStartupMessage() throws IOException {

    try {//from  ww w. j a v a 2  s  .c o m
        StringWriter writer;
        MessageDTO message = new MessageDTO();
        message.setSource("file-receiver");
        message.setDetails("Burst Service starting\n" + version());
        message.setSeverity(SeverityEnum.INFORMATIONAL);
        message.setDateTimeCreated(OffsetDateTime.now(ZoneId.of("UTC")));
        message.setTitle("File Receiver Startup");
        message.addTopic("service");
        message.addTopic("startup");
        message.addTopic("file-receiver");
        message.addMetadata("gmc", "gel");
        message.addMetadata("file_receiver_service_version", version());

        writer = new StringWriter();
        getMarshaller().marshal(message, writer);

        AMQP.BasicProperties.Builder builder = new AMQP.BasicProperties().builder();
        builder.deliveryMode(2);
        builder.contentType("text/xml");
        builder.timestamp(Date.from(OffsetDateTime.now(ZoneId.systemDefault()).toInstant()));

        Channel channel = factory.newConnection().createChannel();
        channel.exchangeDeclare(exchangeName, "topic", true);
        channel.basicPublish(exchangeName, burstQueue, builder.build(), writer.toString().getBytes());
        channel.close();

    } catch (JAXBException | TimeoutException ignored) {
    }
}

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From source file:play.modules.rabbitmq.RabbitMQPlugin.java

License:Apache License

/**
 * Creates the channel./*from w  ww.j ava 2s  .c  o  m*/
 * 
 * @param queue
 *            the queue
 * @return the channel
 * @throws Exception
 *             the exception
 */
public Channel createChannel(String queue, String routingKey) throws Exception {
    // Counter that keeps track of number of retries
    int attempts = 0;

    // Get Plugin
    RabbitMQPlugin plugin = Play.application().plugin(RabbitMQPlugin.class);

    // Create Channel
    Channel channel = this.createChannel();

    // Basic Qos
    if (RabbitMQPlugin.isBasicQos()) {
        int prefetchCount = 1;
        channel.basicQos(prefetchCount);
    }

    // Start Daemon
    while (true) {
        // Add to the number of retries
        attempts++;

        // Log Debug
        Logger.debug("Retry " + attempts);

        // Get Next Delivery Message
        try {
            // http://www.rabbitmq.com/api-guide.html
            // channel.exchangeDeclare(exchangeName, "direct", true);
            // String queueName = channel.queueDeclare().getQueue();
            // channel.queueBind(queueName, exchangeName, routingKey);

            channel.exchangeDeclare(queue, plugin.getExchangeType(), true);
            channel.queueDeclare(queue, plugin.isDurable(), false, false, null);
            channel.queueBind(queue, queue, routingKey);

            // Log Debug
            Logger.info("RabbitMQ Task Channel Available: " + channel);

            // Return Channel
            return channel;

        } catch (Throwable t) {
            // Log Debug
            Logger.error("Error establishing a connection to RabbitMQ, will keep retrying - Exception: %s",
                    ExceptionUtil.getStackTrace(t));

            // Sleep a little while before retrying
            try {
                Thread.sleep(1000 * 10);
            } catch (InterruptedException ex) {
            }
        }
    }
}

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From source file:play.modules.rabbitmq.RabbitMQPlugin.java

License:Apache License

/**
    * Creates the channel for a subscriber to consume messages from an exchange
    * (Exchange is created.  Subscribers queue and binding by routing key are created)
    * //from   www.  j av  a  2  s  .c  o  m
    * @param exchangeName
    *            the exchange name
    * @param queue
    *            the queue
    * @param routingKey
    *            the routing key
    * @return the channel
    * @throws Exception
    *             the exception
    */
public Channel createSubscribersChannel(String exchangeName, String queue, String routingKey) throws Exception {
    // Counter that keeps track of number of retries
    int attempts = 0;

    // Get Plugin
    RabbitMQPlugin plugin = Play.application().plugin(RabbitMQPlugin.class);

    // Create Channel
    Channel channel = this.createChannel();

    // Basic Qos
    if (RabbitMQPlugin.isBasicQos()) {
        int prefetchCount = 1;
        channel.basicQos(prefetchCount);
    }

    // Start Daemon
    while (true) {
        // Add to the number of retries
        attempts++;

        // Log Debug
        Logger.debug("Retry " + attempts);

        // Get Next Delivery Message
        try {
            // http://www.rabbitmq.com/api-guide.html
            channel.exchangeDeclare(exchangeName, plugin.getExchangeType(), true);
            channel.queueDeclare(queue, plugin.isDurable(), false, false, null);
            channel.queueBind(queue, exchangeName, routingKey);

            // Log Debug
            Logger.info("RabbitMQ Task Channel Available: " + channel);

            // Return Channel
            return channel;

        } catch (Throwable t) {
            // Log Debug
            Logger.error("Error establishing a connection to RabbitMQ, will keep retrying - Exception: %s",
                    ExceptionUtil.getStackTrace(t));

            // Sleep a little while before retrying
            try {
                Thread.sleep(1000 * 10);
            } catch (InterruptedException ex) {
            }
        }
    }
}

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From source file:play.modules.rabbitmq.RabbitMQPlugin.java

License:Apache License

/**
 * Creates the channel to publish messages to an exchange
 * (Exchange is created.  Queue and bindings are NOT created)
 * //from   ww w  .  ja  va 2s .c o  m
 * @param exchangeName
 *            the exchange name
 * @return the channel
 * @throws Exception
 *             the exception
 */
public Channel createPublishersChannel(String exchangeName) throws Exception {
    // Counter that keeps track of number of retries
    int attempts = 0;

    // Get Plugin
    RabbitMQPlugin plugin = Play.application().plugin(RabbitMQPlugin.class);

    // Create Channel
    Channel channel = this.createChannel();

    // Basic Qos
    if (RabbitMQPlugin.isBasicQos()) {
        int prefetchCount = 1;
        channel.basicQos(prefetchCount);
    }

    // Start Daemon
    while (true) {
        // Add to the number of retries
        attempts++;

        // Log Debug
        Logger.debug("Retry " + attempts);

        // Get Next Delivery Message
        try {
            // http://www.rabbitmq.com/api-guide.html
            channel.exchangeDeclare(exchangeName, plugin.getExchangeType(), true);

            // Log Debug
            Logger.info("RabbitMQ Task Channel Available: " + channel);

            // Return Channel
            return channel;

        } catch (Throwable t) {
            // Log Debug
            Logger.error("Error establishing a connection to RabbitMQ, will keep retrying - Exception: %s",
                    ExceptionUtil.getStackTrace(t));

            // Sleep a little while before retrying
            try {
                Thread.sleep(1000 * 10);
            } catch (InterruptedException ex) {
            }
        }
    }
}

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