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.shopwiki.roger.rpc.RpcServer.java

License:Apache License

/**
 * 1. Creates {@link RpcWorker}s using the {@link WorkerFactory} provided to the constructor.
 * 2. Declares queues & binds routing-keys if a (@link QueueDeclarator} was provided to the constructor.
 * 3. Starts each {@link RpcWorker}./*from   w w  w. ja va  2s.com*/
 *
 * @throws IOException
 */
public void start() throws IOException {
    RpcWorkers workers = workerFactory.createWorkers(queuePrefix);

    Connection conn = null;
    try {
        conn = workers.getConnection();
        conn.addShutdownListener(reconnector);
        Channel channel = conn.createChannel();

        if (queueDeclarator != null) {
            for (RpcWorker worker : workers) {
                queueDeclarator.declareQueue(channel, worker);
                queueDeclarator.bindQueue(channel, worker);
            }
        }

        for (RpcWorker worker : workers) {
            worker.setPostProcessors(postProcessors);
            String queueName = worker.getQueueName();

            System.out.println(channel + " - Starting Worker for queue: " + queueName);
            channel.queueDeclarePassive(queueName); // make sure the handler's queue exists
            worker.start();
        }
    } catch (IOException e) {
        RabbitConnector.closeConnection(conn);
        throw e;
    } catch (RuntimeException e) {
        RabbitConnector.closeConnection(conn);
        throw e;
    } catch (Error e) {
        RabbitConnector.closeConnection(conn);
        throw e;
    }
}

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From source file:com.simple.sftpfetch.publish.RabbitClient.java

License:Apache License

/**
 * Initialize the RabbitClient, establish a connection and declare the exchange
 *
 * @param factory the RabbitMQ ConnectionFactory
 * @param connectionInfo a bean containing the necessary connection information
 *
 * @throws NoSuchAlgorithmException//  w  w w .  j  av  a  2s .  c o m
 * @throws KeyManagementException
 * @throws URISyntaxException
 * @throws IOException
 */
public RabbitClient(ConnectionFactory factory, RabbitConnectionInfo connectionInfo)
        throws NoSuchAlgorithmException, KeyManagementException, URISyntaxException, IOException {
    factory.setHost(connectionInfo.getHostname());
    factory.setPort(connectionInfo.getPort());
    factory.setUsername(connectionInfo.getUsername());
    factory.setPassword(connectionInfo.getPassword());
    factory.setVirtualHost(connectionInfo.getVhost());
    factory.setConnectionTimeout(connectionInfo.getTimeout());
    Connection conn = factory.newConnection();
    exchange = connectionInfo.getExchange();
    channel = conn.createChannel();
    channel.exchangeDeclare(exchange, EXCHANGE_TYPE, true);
    this.amqpProperties = new AMQP.BasicProperties.Builder().contentType(CONTENT_TYPE).deliveryMode(2).build();
}

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From source file:com.sitewhere.protobuf.test.ActiveMQTests.java

License:Open Source License

@Test
public void doRabbitMQTest() throws Exception {
    String exchangeName = "sitewhere";
    String queueName = "SITEWHERE.IN";
    String routingKey = "sitewhere";

    ConnectionFactory factory = new ConnectionFactory();
    factory.setUri("amqp://localhost:5672/SITEWHERE.IN");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    channel.exchangeDeclare(exchangeName, "direct", true);
    channel.queueDeclare(queueName, true, false, false, null);
    channel.queueBind(queueName, exchangeName, routingKey);

    byte[] messageBodyBytes = generateEncodedMeasurementsMessage();
    channel.basicPublish(exchangeName, routingKey, null, messageBodyBytes);

    channel.close();//from  w w  w.j  a v a2s . c om
    connection.close();
}

---

From source file:com.sitewhere.sources.ActiveMQTests.java

License:Open Source License

@Test
public void doRabbitMQTest() throws Exception {
    String exchangeName = "sitewhere";
    String queueName = "sitewhere.input";
    String routingKey = "sitewhere";

    ConnectionFactory factory = new ConnectionFactory();
    factory.setUri("amqp://localhost:5672");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    channel.exchangeDeclare(exchangeName, "direct", true);
    channel.queueDeclare(queueName, true, false, false, null);
    channel.queueBind(queueName, exchangeName, routingKey);

    byte[] messageBodyBytes = EventsHelper.generateEncodedMeasurementsMessage(HARDWARE_ID);
    channel.basicPublish(exchangeName, routingKey, null, messageBodyBytes);

    channel.close();//  w  w w. j  a  va2 s  .co m
    connection.close();
}

---

From source file:com.siva.rabbitmq.AmqpMsgPublisher.java

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

    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    factory.setUsername("admin");
    factory.setPassword("welcome01");
    factory.setPort(5672);// w ww.j  a  v  a  2 s. c o  m
    factory.setVirtualHost("/admin_vhost");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    channel.exchangeDeclare(EXCHANGE_NAME, "topic", true);

    String routingKey = "mqtt_topic.iot.admin_vhost";
    String message = "Test Message from IoT";

    channel.basicPublish(EXCHANGE_NAME, routingKey, null, message.getBytes());
    System.out.println(" [x] Sent '" + routingKey + "':'" + message + "'");

    connection.close();
}

---

From source file:com.trivago.mail.pigeon.daemon.Daemon.java

License:Apache License

/**
 * Main Daemon method containing the event loop.
 *
 * @param args command line args//from  ww  w .  j  a va  2 s. c  o  m
 * @throws java.io.IOException
 */
public static void main(String[] args) throws IOException {

    Connection conn = null;
    Channel channel = null;

    try {
        conn = ConnectionPool.getConnection();
        channel = conn.createChannel();

        boolean autoAck = false;
        QueueingConsumer consumer = new QueueingConsumer(channel);
        channel.basicConsume(channelName, autoAck, consumer);
        MailFacade mailFacade = new MailFacade();

        while (true) {
            QueueingConsumer.Delivery delivery;
            try {
                delivery = consumer.nextDelivery();
            } catch (InterruptedException ie) {
                continue;
            }

            String jsonContent = new String(delivery.getBody());
            MailTransport mailTransport = JSONParser.defaultJSONParser().parse(MailTransport.class,
                    jsonContent);
            mailFacade.sendMail(mailTransport);
            channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        }

    } finally {
        if (channel != null) {
            channel.close();
        }
        if (conn != null) {
            conn.close();
        }
    }
}

---

From source file:com.trivago.mail.pigeon.web.data.process.QueueNewsletter.java

License:Apache License

private void queueNewsletter(Mail mail, Sender sender, Recipient recipient, Campaign campaign) {
    Connection conn = ConnectionPool.getConnection();
    Channel channel = null;//from   w w w.java 2 s . c om
    MailTransport transport = templateProcessor.processMail(mail, recipient, sender, campaign);

    if (transport == null) {
        log.warn(
                "Template processor returned null instead of a mail transport object. This is probably a bug!");
        return;
    }

    if (transport.shouldAbortSending() && !transport.shouldEnforceSending()) {
        log.info("Skipped mail to " + transport.getTo() + " because transport aborted sending.");
        return;
    }

    String json = JSON.defaultJSON().forValue(transport);

    try {
        channel = conn.createChannel();
        channel.exchangeDeclare("mailpidgeon", "direct", true);
        channel.queueDeclare(channelName, true, false, false, null);
        channel.queueBind(channelName, "mailpidgeon", "mailpidgeon");

        byte[] messageBodyBytes = json.getBytes();
        channel.basicPublish("mailpidgeon", "mailpidgeon", null, messageBodyBytes);

    } catch (IOException e) {
        log.error(e);
    } finally {
        if (channel != null) {
            try {
                channel.close();
            } catch (IOException e) {
                log.error("Could not close channel", e);
            }
        }
    }
}

---

From source file:com.trivago.mail.pigeon.web.data.process.QueueNewsletter.java

License:Apache License

public int getProgress(long newsletterId) {
    Connection conn = ConnectionPool.getConnection();
    Channel channel = null;//from w ww .  j  ava2 s  .co m
    try {
        channel = conn.createChannel();
        AMQP.Queue.DeclareOk declareOk = channel.queueDeclarePassive(channelName);
        return declareOk.getMessageCount();
    } catch (Exception e) {
        log.error("Error while fetching progress", e);
    } finally {
        assert channel != null;
        try {
            channel.close();
        } catch (IOException e) {
            log.error("Could not close channel", e);
        }
    }
    return 0;
}

---

From source file:com.UseCaseSimpleConsumer.java

License:Open Source License

public static void main(String[] argv) throws java.io.IOException {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    try {/*from   w  w  w .  ja v  a  2  s  .  c o  m*/
        channel.exchangeDeclarePassive(EXCHANGE_NAME);
    } catch (java.io.IOException e) {
        if (!channel.isOpen())
            channel = connection.createChannel();
        channel.exchangeDeclare(EXCHANGE_NAME, "direct");
    }
    try {
        channel.queueDeclarePassive(ROUTE_KEY);
    } catch (java.io.IOException e) {
        if (!channel.isOpen())
            channel = connection.createChannel();
        channel.queueDeclare(ROUTE_KEY, false, false, false, null);
    }

    channel.queueBind(ROUTE_KEY, EXCHANGE_NAME, ROUTE_KEY);

    String param = "IBM";
    String msg = "<m:placeOrder xmlns:m=\"http://services.samples\">\n" + "    <m:order>\n"
            + "        <m:price>" + getRandom(100, 0.9, true) + "</m:price>\n" + "        <m:quantity>"
            + (int) getRandom(10000, 1.0, true) + "</m:quantity>\n" + "        <m:symbol>" + param
            + "</m:symbol>\n" + "    </m:order>\n" + "</m:placeOrder>";

    channel.basicPublish(EXCHANGE_NAME, ROUTE_KEY,
            new AMQP.BasicProperties.Builder().contentType("text/plain").build(), msg.getBytes());
    System.out.println(" [x] Sent '" + msg + "'");
    channel.close();
    connection.close();
}

---

From source file:com.UseCaseSimpleProducer.java

License:Open Source License

public static void main(String[] argv) throws java.io.IOException, InterruptedException {

    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("localhost");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    try {//from   w w  w .  j a  v a2s .  c  o  m
        channel.exchangeDeclarePassive(EXCHANGE_NAME);
    } catch (java.io.IOException e) {
        channel.exchangeDeclare(EXCHANGE_NAME, "direct");
    }

    try {
        channel.queueDeclarePassive(QUEUE_NAME);
    } catch (java.io.IOException e) {
        channel.queueDeclare(QUEUE_NAME, false, false, false, null);
    }
    channel.queueBind(QUEUE_NAME, EXCHANGE_NAME, QUEUE_NAME);

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

    while (true) {
        QueueingConsumer.Delivery delivery = consumer.nextDelivery();
        String message = new String(delivery.getBody());
        System.out.println(" [x] Received '" + message + "'");
    }
}

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