Example usage for com.rabbitmq.client Connection createChannel

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.codio.collab.core.queue.DocumentRequestPerformer.java

License:Apache License

public DocumentRequestPerformer(final Connection connection, final String name,
        final BackendProcessor backendProcessor) {
    this.backendProcessor = backendProcessor;
    try {//from w  w w .  j  av a 2s .c o  m
        channel = connection.createChannel();
        channel.basicQos(1);
        consumer = new QueueingConsumer(channel);

        channel.basicConsume(name, false, consumer);
    } catch (IOException e) {
        LOG.error("Problem with init document consumer = {}, {}", e.getMessage(), e);
    }
}

---

From source file:com.codio.collab.core.queue.DocumentResponsePerformer.java

License:Apache License

public DocumentResponsePerformer(final Connection connection, final String name,
        final FrontendProcessor frontendProcessor) {
    this.frontendProcessor = frontendProcessor;
    try {/*w  w w. ja v a2 s  .c om*/
        LOG.debug("DocumentResponsePerformer");
        channel = connection.createChannel();
        channel.basicQos(1);
        consumer = new QueueingConsumer(channel);
        channel.basicConsume(name, false, consumer);
    } catch (IOException e) {
        LOG.error("Problem with init response document consumer = {}, {}", e.getMessage(), e);
    }
}

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From source file:com.colm.app.Main.java

License:Open Source License

public static void main(String[] args) throws Exception {
    Connection connection;
    Channel channel;//from w w  w  . jav a 2 s.co m
    String replyQueueName;
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("192.168.0.13");
    factory.setPassword("admin");
    factory.setUsername("admin");
    factory.setVirtualHost("admin");
    connection = factory.newConnection();
    channel = connection.createChannel();
    String queneNAme = "rabbitmq_test";
    channel.queueDeclare(queneNAme, false, false, false, null);
    String message = "Something Else";
    for (int i = 0; i < 1000; i++) {
        channel.basicPublish("", queneNAme, null, message.getBytes());
    }
    System.out.println("Sent '" + message + "'");
    channel.close();
    connection.close();

}

---

From source file:com.DeadLetterReceiver.java

License:Open Source License

public static void main(String[] args)
        throws IOException, ShutdownSignalException, ConsumerCancelledException, InterruptedException {

    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(HOSTNAME);// w  w w .  j av  a2  s  .  com
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    //creating reply queue
    try {
        channel.queueDeclarePassive(QUEUE_NAME);
    } catch (java.io.IOException e) {
        if (!channel.isOpen())
            channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
    }

    System.out.println(" [*] Waiting for responses. To exit press CTRL+C");
    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(QUEUE_NAME, true, consumer);

    while (true) {
        QueueingConsumer.Delivery delivery = consumer.nextDelivery();
        BasicProperties props = delivery.getProperties();
        String message = new String(delivery.getBody());
        System.out.println(" [x] Response received '" + message + "'");
        System.out.println("Correlation id : " + props.getCorrelationId());
    }
}

---

From source file:com.DeadLetterSender.java

License:Open Source License

public static void main(String[] argv) throws Exception {

    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(HOSTNAME);//from   w  w  w .jav  a 2s  .c  o m
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    try {
        channel.exchangeDeclarePassive(EXCHANGE_NAME);
    } catch (java.io.IOException e) {
        if (!channel.isOpen())
            channel = connection.createChannel();
        channel.exchangeDeclare(EXCHANGE_NAME, "direct", true);
    }

    try {
        channel.queueDeclarePassive(QUEUE_NAME);
    } catch (java.io.IOException e) {
        if (!channel.isOpen())
            channel = connection.createChannel();
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
    }
    channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, QUEUE_NAME);

    // Request Message
    String message = "<soapenv:Envelope" + " xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\">\n"
            + "<soapenv:Body>\n" + "  <p:greet xmlns:p=\"http://service.wso2.org\">\n" + "     <in>" + "IBM"
            + "</in>\n" + "  </p:greet>\n" + "</soapenv:Body>\n" + "</soapenv:Envelope>";

    // Adding Message Properties
    AMQP.BasicProperties.Builder builder = new AMQP.BasicProperties().builder();
    builder.messageId("007");
    builder.contentType("text/xml");
    builder.correlationId("1111");
    builder.replyTo(REPLY_QUEUE_NAME);
    builder.contentEncoding("UTF-8");

    // Custom user properties
    Map<String, Object> headers = new HashMap<String, Object>();
    headers.put("SOAP_ACTION", "getQuote");
    builder.headers(headers);

    // Publish the message to exchange
    channel.basicPublish(EXCHANGE_NAME, QUEUE_NAME, builder.build(), message.getBytes());
    channel.close();
    connection.close();
}

---

From source file:com.ericsson.eiffel.remrem.publish.helper.RabbitMqProperties.java

License:Apache License

/**
 * This method is used to check for checking exchange availability, if
 * exchange is not available creates a new exchange based on isCreateExchangeIfNotExisting true boolean property  .
 * @throws RemRemPublishException/*from ww  w  .j a  va 2  s.c  o  m*/
 * @throws TimeoutException
 * @throws IOException
 */
public void checkAndCreateExchangeIfNeeded() throws RemRemPublishException {
    final boolean exchangeAlreadyExist = hasExchange();
    if (!exchangeAlreadyExist) {
        if (isCreateExchangeIfNotExisting()) {
            Connection connection = null;
            try {
                connection = factory.newConnection();
            } catch (final IOException | TimeoutException e) {
                throw new RemRemPublishException("Exception occurred while creating Rabbitmq connection ::"
                        + factory.getHost() + ":" + factory.getPort() + e.getMessage());
            }
            Channel channel = null;
            try {
                channel = connection.createChannel();
            } catch (final IOException e) {
                throw new RemRemPublishException(
                        "Exception occurred while creating Channel with Rabbitmq connection ::"
                                + factory.getHost() + ":" + factory.getPort() + e.getMessage());
            }
            try {
                channel.exchangeDeclare(exchangeName, "topic", true);
            } catch (final IOException e) {
                log.info(exchangeName + "failed to create an exchange");
                throw new RemRemPublishException("Unable to create Exchange with Rabbitmq connection "
                        + exchangeName + factory.getHost() + ":" + factory.getPort() + e.getMessage());
            } finally {
                if (channel == null || channel.isOpen()) {
                    try {
                        channel.close();
                        connection.close();
                    } catch (IOException | TimeoutException e) {
                        log.warn("Exception occurred while closing the channel" + e.getMessage());
                    }
                }
            }
        } else {
            if (!Boolean.getBoolean(PropertiesConfig.CLI_MODE)) {
                throw new RemRemPublishException(
                        exchangeName + PropertiesConfig.INVALID_EXCHANGE_MESSAGE_SERVICE);
            } else {
                throw new RemRemPublishException(
                        "Exchange " + exchangeName + PropertiesConfig.INVALID_EXCHANGE_MESSAGE_CLI);
            }
        }
    }
}

---

From source file:com.ericsson.eiffel.remrem.publish.helper.RabbitMqProperties.java

License:Apache License

/**
 * This method is used to check exchange exists or not
 * @return Boolean//from   ww  w. j  a  v  a  2  s.co  m
 * @throws RemRemPublishException
 * @throws TimeoutException
 * @throws IOException
 */
private boolean hasExchange() throws RemRemPublishException {
    log.info("Exchange is: " + exchangeName);
    Connection connection;
    try {
        connection = factory.newConnection();
    } catch (final IOException | TimeoutException e) {
        throw new RemRemPublishException("Exception occurred while creating Rabbitmq connection ::"
                + factory.getHost() + factory.getPort() + e.getMessage());
    }
    Channel channel = null;
    try {
        channel = connection.createChannel();
    } catch (final IOException e) {
        log.info("Exchange " + exchangeName + " does not Exist");
        throw new RemRemPublishException("Exception occurred while creating Channel with Rabbitmq connection ::"
                + factory.getHost() + factory.getPort() + e.getMessage());
    }
    try {
        channel.exchangeDeclarePassive(exchangeName);
        return true;
    } catch (final IOException e) {
        log.info("Exchange " + exchangeName + " does not Exist");
        return false;
    } finally {
        if (channel != null && channel.isOpen()) {
            try {
                channel.close();
                connection.close();
            } catch (IOException | TimeoutException e) {
                log.warn("Exception occurred while closing the channel" + e.getMessage());
            }
        }
    }
}

---

From source file:com.ericsson.research.IoTFrameworkEndpoint.java

License:Open Source License

public void subscribe(String hostName, String StreamId, final DataPointCallback dataPointCallback)
        throws IOException {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(hostName); // listening on port 5672

    Connection connection = factory.newConnection();

    final Channel channel = connection.createChannel();
    final String EXCHANGE_NAME = "streams." + StreamId;

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

    dataPointCallback.setConnection(connection);

    boolean autoAck = true;
    channel.basicConsume(queueName, autoAck, "myConsumerTag", new DefaultConsumer(channel) {
        @Override/*w  w w  .  j  a va 2 s .  c o m*/
        public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties,
                byte[] body) throws IOException {
            DataPointNotification notification = gson.fromJson(new String(body), DataPointNotification.class);
            dataPointCallback.handleNotification(notification);
        }
    });
}

---

From source file:com.es.dashboard.ConnectionBroker.java

@PostConstruct
public void init() {

    bigBaite = new LinkedList<>();
    readings = new ArrayList<Reading>();
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("systembus"); // RabbitMQ IP
    Connection connection = null;
    try {/*  w  w w . j  a  v  a 2 s .  c  om*/
        connection = factory.newConnection();
    } catch (IOException ex) {
        logger.error(ex);
    } catch (TimeoutException ex) {
        logger.error(ex);
    }
    Channel channel = null;
    try {
        channel = connection.createChannel();
    } catch (IOException ex) {
        logger.error(ex);
    }

    try {
        channel.exchangeDeclare("sensors", "topic"); // sensors is the name of the exchange
    } catch (IOException ex) {
        logger.error(ex);
    }
    AMQP.Queue.DeclareOk result = null;
    try {
        result = channel.queueDeclare("", false, true, false, null);
    } catch (IOException ex) {
        logger.error(ex);
    }
    String queuename = result.getQueue();
    try {
        channel.queueBind(queuename, "sensors", "realtime.sensordata"); // Binding key is #, this will consume all messages
        channel.queueBind(queuename, "sensors", "realtime.alarms"); // Binding key is #, this will consume all messages
    } catch (IOException ex) {
        logger.error(ex);
    }

    logger.info(" [*] Waiting for messages. To exit press CTRL+C");

    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");
            EventBus eventBus = EventBusFactory.getDefault().eventBus();
            Gson gson = new Gson();
            Type type = new TypeToken<Map<String, String>>() {
            }.getType();
            Map<String, String> myMap = gson.fromJson(message, type);
            if (envelope.getRoutingKey().equals("realtime.alarms")) {
                eventBus.publish("/channel", message);
                return;
            }
            logger.info(envelope.getRoutingKey());

            readings.add(new Reading(new Date(Long.parseLong(myMap.get("timestamp"))), myMap.get("data"),
                    myMap.get("name"), myMap.get("room")));
            eventBus.publish("/channel", message);

        }
    };
    try {
        //RequestContext.getCurrentInstance().execute("function rpt() {$(\".qualquer\").first().trigger(\"click\")}"
        //        + "var timeoutdummy = window.setInterval(rpt,2000);");
        channel.basicConsume(queuename, true, consumer);
    } catch (IOException ex) {
        ex.printStackTrace();
        logger.error(ex);
    }

}

---

From source file:com.es.dashboard.ConnectionBrokerJPA.java

@PostConstruct
public void init() {
    bigBaite = new LinkedList<>();
    readings = new ArrayList<Reading>();
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("systembus"); // RabbitMQ IP
    Connection connection = null;
    try {//from  www  . j a  v  a 2  s .co  m
        connection = factory.newConnection();
    } catch (IOException ex) {
        logger.error(ex);
    } catch (TimeoutException ex) {
        logger.error(ex);
    }
    Channel channel = null;
    try {
        channel = connection.createChannel();
    } catch (IOException ex) {
        logger.error(ex);
    }

    try {
        channel.exchangeDeclare("sensors", "topic"); // sensors is the name of the exchange
    } catch (IOException ex) {
        logger.error(ex);
    }
    AMQP.Queue.DeclareOk result = null;
    try {
        result = channel.queueDeclare("", false, true, false, null);
    } catch (IOException ex) {
        logger.error(ex);
    }
    String queuename = result.getQueue();
    try {
        channel.queueBind(queuename, "sensors", "dashboard.response"); // Binding key is #, this will consume all messages
    } catch (IOException ex) {
        logger.error(ex);
    }

    logger.info(" [*] Waiting for messages. To exit press CTRL+C");

    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");

            EventBus eventBus = EventBusFactory.getDefault().eventBus();
            Gson gson = new Gson();
            Type type = new TypeToken<Map<String, String>>() {
            }.getType();
            Map<String, String> myMap = gson.fromJson(message, type);
            if (envelope.getRoutingKey().equals("realtime.alarms")) {
                eventBus.publish("/jpa", message);
                return;
            }
            System.out.println(envelope.getRoutingKey());
            logger.info(envelope.getRoutingKey());

            //readings.add(new Reading(new Date(Long.parseLong(myMap.get("timestamp"))), myMap.get("value"), myMap.get("name"), myMap.get("room")));
            //System.out.println("publishing " + msg_to_publish);
            eventBus.publish("/jpa", message);
            //System.out.println("published");

        }
    };
    try {
        //RequestContext.getCurrentInstance().execute("function rpt() {$(\".qualquer\").first().trigger(\"click\")}"
        //        + "var timeoutdummy = window.setInterval(rpt,2000);");
        channel.basicConsume(queuename, true, consumer);
    } catch (IOException ex) {
        ex.printStackTrace();
        logger.error(ex);
    }

}

---

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