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:uk.ac.sanger.cgp.wwdocker.messages.Messaging.java

License:Open Source License

/**
 * Sends a message to the specified queue
 * @param queue//ww w  .  j  a  va2 s. c  om
 * @param in
 * @param host
 * @throws IOException
 * @throws InterruptedException 
 * @throws TimeoutException
 */
public void sendMessage(String queue, Object in, String host)
        throws IOException, InterruptedException, TimeoutException {
    String message;
    Builder propBuilder = MessageProperties.MINIMAL_PERSISTENT_BASIC.builder();
    if (in.getClass().equals(String.class)) {
        message = (String) in;
    } else {
        message = Utils.objectToJson(in);
        if (in.getClass().equals(WorkerState.class)) {
            host = ((WorkerState) in).getResource().getHostName();
        }
    }
    if (host != null) {
        Map<String, Object> headers = new HashMap();
        headers.put("host", host);
        propBuilder.headers(headers);
    }
    BasicProperties mProp = propBuilder.build();

    Connection connectionSend = getRmqConn();
    Channel channel = connectionSend.createChannel();
    channel.confirmSelect();
    channel.queueDeclare(queue, true, false, false, null);
    channel.basicPublish("", queue, mProp, message.getBytes());
    channel.waitForConfirmsOrDie(5000);
    logger.info(queue + " sent: " + message);
    channel.close();
    closeRmqConn(connectionSend);
}

---

From source file:uk.ac.sanger.cgp.wwdocker.messages.Messaging.java

License:Open Source License

public void sendFile(String queue, String host, File f)
        throws IOException, InterruptedException, TimeoutException {
    Map<String, Object> headers = new HashMap();
    headers.put("host", host);
    BasicProperties mProp = MessageProperties.MINIMAL_PERSISTENT_BASIC.builder().headers(headers).build();
    Connection connectionSend = getRmqConn();
    Channel channel = connectionSend.createChannel();
    channel.confirmSelect();//from   w ww.jav  a  2  s. c  om
    channel.queueDeclare(queue, true, false, false, null);
    channel.basicPublish("", queue, mProp, Files.readAllBytes(f.toPath()));
    channel.waitForConfirmsOrDie(5000);
    logger.info(queue + " file: " + f.getAbsolutePath());
    channel.close();
    closeRmqConn(connectionSend);
}

---

From source file:uk.ac.sanger.cgp.wwdocker.messages.Messaging.java

License:Open Source License

public void cleanQueue(String queue, String match) throws IOException, InterruptedException {
    logger.trace(queue.concat(": ").concat(match));
    Connection connectionRcv = getRmqConn();
    Channel channel = connectionRcv.createChannel();
    channel.queueDeclare(queue, true, false, false, null);

    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queue, false, consumer);
    QueueingConsumer.Delivery delivery = consumer.nextDelivery(1000);
    Set seen = new HashSet();
    while (delivery != null) {
        String body = new String(delivery.getBody());
        if (seen.contains(body)) {
            break;
        }/*from www .  j  a v a  2s  . com*/
        if (body.contains(match)) {
            channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        } else {
            channel.basicNack(delivery.getEnvelope().getDeliveryTag(), false, true);
            seen.add(body);
        }
        delivery = consumer.nextDelivery(1000);
    }
    channel.close();
    closeRmqConn(connectionRcv);
}

---

From source file:uk.ac.sanger.cgp.wwdocker.messages.Messaging.java

License:Open Source License

public List<File> getFiles(String queue, Path outFolder, boolean ack) throws IOException, InterruptedException {
    List files = new ArrayList();
    Connection connectionRcv = getRmqConn();
    Channel channel = connectionRcv.createChannel();
    channel.queueDeclare(queue, true, false, false, null);

    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queue, false, consumer);
    QueueingConsumer.Delivery delivery = consumer.nextDelivery(1000);

    Set seen = new HashSet();

    while (delivery != null) {
        String host = delivery.getProperties().getHeaders().get("host").toString();
        File outTo = Paths.get(outFolder.toString(), host + ".tar.gz").toFile();
        FileUtils.writeByteArrayToFile(outTo, delivery.getBody());
        if (ack) {
            channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        } else {//  w ww  .  j a va2 s.c  om
            channel.basicNack(delivery.getEnvelope().getDeliveryTag(), false, true);
        }
        if (seen.contains(delivery.getProperties().getHeaders().get("host"))) {
            break;
        }
        seen.add(delivery.getProperties().getHeaders().get("host"));
        files.add(outTo);
        logger.info(queue + " retrieved: " + outTo.getAbsolutePath());
        delivery = consumer.nextDelivery(1000);
    }
    logger.warn("getFiles done");
    channel.close();
    closeRmqConn(connectionRcv);
    return files;
}

---

From source file:uk.ac.sanger.cgp.wwdocker.messages.Messaging.java

License:Open Source License

public WorkerState getWorkerState(String queue, long wait) throws IOException, InterruptedException {
    WorkerState ws = null;//ww w.ja  v  a  2 s . c o m
    Connection connectionRcv = getRmqConn();
    Channel channel = connectionRcv.createChannel();
    channel.queueDeclare(queue, true, false, false, null);

    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queue, false, consumer);
    QueueingConsumer.Delivery delivery;
    if (wait == -1) {
        delivery = consumer.nextDelivery(); // will block until response
    } else {
        delivery = consumer.nextDelivery(wait);
    }
    if (delivery != null) {
        String message = new String(delivery.getBody());
        ws = (WorkerState) Utils.jsonToObject(message, WorkerState.class);
        channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
    }
    channel.close();
    closeRmqConn(connectionRcv);
    return ws;
}

---

From source file:uk.ac.sanger.cgp.wwdocker.messages.Messaging.java

License:Open Source License

/**
 * Gets a single message from a queue, ideal for getting an item of work.
 * @param queue//from  w  ww .  j ava  2s  . c o  m
 * @param wait
 * @return A JSON string representing an object, you need to know what type of object the queue will return and handle this outside of here
 * @throws IOException
 * @throws InterruptedException 
 */
public String getMessageString(String queue, long wait) throws IOException, InterruptedException {
    String message = null;
    Connection connectionRcv = getRmqConn();
    Channel channel = connectionRcv.createChannel();
    channel.queueDeclare(queue, true, false, false, null);

    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queue, false, consumer);
    QueueingConsumer.Delivery delivery;
    if (wait == -1) {
        delivery = consumer.nextDelivery(); // will block until response
    } else {
        delivery = consumer.nextDelivery(wait);
    }
    if (delivery != null) {
        message = new String(delivery.getBody());
        channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        logger.info(queue + " recieved: " + message);
    }
    channel.close();
    closeRmqConn(connectionRcv);
    return message;
}

---

From source file:uk.ac.sanger.cgp.wwdocker.messages.Messaging.java

License:Open Source License

public void removeFromStateQueue(String queue, String hostToRemove) throws IOException, InterruptedException {
    logger.trace(queue.concat(": ").concat(hostToRemove));
    Connection connectionRcv = getRmqConn();
    Channel channel = connectionRcv.createChannel();
    int maxTries = channel.queueDeclare(queue, true, false, false, null).getMessageCount();
    logger.trace("Queue : messages\t" + queue + " : " + maxTries);

    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queue, false, consumer);
    QueueingConsumer.Delivery delivery = consumer.nextDelivery(200);
    logger.trace(maxTries);/*from ww w  .j  ava2  s . co  m*/
    while (delivery != null && maxTries > 0) {
        // the toString in the middle of this is needed as it is wrapped with another type that can hold 4GB
        Map<String, Object> headers = delivery.getProperties().getHeaders();
        if (headers != null && headers.get("host").toString().equals(hostToRemove)) {
            logger.trace(headers.get("host").toString().concat(" remove"));
            channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        } else {
            channel.basicNack(delivery.getEnvelope().getDeliveryTag(), false, true);
        }
        delivery = consumer.nextDelivery(200);
        maxTries--;
    }
    channel.close();
    closeRmqConn(connectionRcv);
}

---

From source file:uk.ac.sanger.cgp.wwdocker.messages.Messaging.java

License:Open Source License

/**
 * Gets all the messages in a queue, best for queues which receive status updates.
 * @param queue// w w  w.j  a v  a  2 s .  com
 * @param wait
 * @return List of JSON strings representing objects, you need to know what type of object the queue will return and handle this outside of here
 * @throws IOException
 * @throws InterruptedException 
 */
public List<String> getMessageStrings(String queue, long wait) throws IOException, InterruptedException {
    List<String> responses = new ArrayList();
    Connection connectionRcv = getRmqConn();
    Channel channel = connectionRcv.createChannel();
    channel.queueDeclare(queue, true, false, false, null);
    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(queue, true, consumer);
    while (true) {
        QueueingConsumer.Delivery delivery = consumer.nextDelivery(wait);
        if (delivery == null) {
            break;
        }
        String message = new String(delivery.getBody());
        logger.info(queue + " recieved: " + message);
        responses.add(message);
    }
    channel.close();
    closeRmqConn(connectionRcv);
    return responses;
}

---

From source file:uk.org.openeyes.oink.hl7v2.test.Hl7ITSupport.java

License:Open Source License

protected static Channel getChannel(ConnectionFactory factory) throws IOException {
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    return channel;
}

---

From source file:uk.org.openeyes.oink.proxy.test.ITProxyRoute.java

License:Open Source License

@Test
public void testPatientSearchWithNull() throws Exception {

    // Build Oink request
    String resourcePath = "/Patient";
    String method = "GET";
    OINKRequestMessage request = new OINKRequestMessage();
    request.setResourcePath(resourcePath);
    request.setMethod(HttpMethod.valueOf(method));

    // Send Oink request over rabbit
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    String replyQueueName = channel.queueDeclare().getQueue();
    channel.queueBind(replyQueueName, testProperties.getProperty("rabbit.defaultExchange"), replyQueueName);
    QueueingConsumer consumer = new QueueingConsumer(channel);
    channel.basicConsume(replyQueueName, true, consumer);

    BasicProperties props = new BasicProperties().builder().replyTo(replyQueueName).build();

    byte[] requestBody = camelCtx.getTypeConverter().convertTo(byte[].class, request);

    channel.basicPublish(testProperties.getProperty("rabbit.defaultExchange"),
            testProperties.getProperty("rabbit.routingKey"), props, requestBody);

    // Wait// w  w  w  . j  av a2 s.  c  o m
    Thread.sleep(1000);

    // Assert response
    QueueingConsumer.Delivery delivery = consumer.nextDelivery(5000);
    assertNotNull(delivery);
    byte[] responseBody = delivery.getBody();

    OinkMessageConverter conv = new OinkMessageConverter();
    OINKResponseMessage message = conv.responseMessageFromByteArray(responseBody);

}

---

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