Example usage for com.rabbitmq.client Channel basicAck

Introduction

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

Prototype

void basicAck(long deliveryTag, boolean multiple) throws IOException;

Source Link

Document

Acknowledge one or several received messages.

Usage

From source file:wiki.messaging.Treeceive.java

License:Open Source License

public static void main(String[] args) throws IOException, InterruptedException {
    String url = null;//from  w  w  w.  ja  va  2  s .  c o  m
    String rabbitMqUrl = null;
    for (int i = 0; i < args.length; i++) {
        if (args[i].equals("ds")) {
            url = args[i + 1];
        } else if (args[i].equals("rq")) {
            rabbitMqUrl = args[i + 1];
        } else if (args[i].equals("mj")) {
            maxJobs = Integer.valueOf(args[i + 1]);
        }
    }
    if (rabbitMqUrl == null) {
        rabbitMqUrl = "192.168.1.108";
    }
    if (url == null) {
        url = "localhost";
    }
    //        if (resultUrl == null) {
    //            resultUrl = url;
    //        }
    threadPool = new ExecutorCompletionService<>(Executors.newFixedThreadPool(maxJobs));
    System.out.println("DataSource: " + url);
    //        System.out.println("ResultWrite: " + resultUrl);
    DbConnector ds = new DbConnector(url);
    //        DbConnector rs = new DbConnector(resultUrl);

    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost(rabbitMqUrl);
    factory.setUsername("wiki");
    factory.setPassword("wiki");
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();

    channel.queueDeclare(QUEUE_NAME, false, false, false, null);
    channel.queueDeclare(RESULT_QUEUE_NAME, true, false, false, null);
    System.out.println(" [*] Waiting for messages.");

    channel.basicQos(maxJobs);

    QueueingConsumer consumer = new QueueingConsumer(channel);
    boolean autoAck = false;
    channel.basicConsume(QUEUE_NAME, autoAck, consumer);

    while (true) {
        QueueingConsumer.Delivery delivery = consumer.nextDelivery();
        String message = new String(delivery.getBody());
        System.out.println(" [x] Received '" + message + "'");
        doWork(message, ds);
        saveResults(channel);
        System.out.println(" [x] Done");
        channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
    }
}

From source file:workqueue.Worker.java

public static void main(String[] argv) throws Exception {
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("datdb.cphbusiness.dk");
    final Connection connection = factory.newConnection();
    final Channel channel = connection.createChannel();

    channel.queueDeclare(TASK_QUEUE_NAME, true, false, false, null);
    System.out.println(" [*] Waiting for messages. To exit press CTRL+C");

    channel.basicQos(1);/* www. j  a  v a 2 s  . c om*/

    final 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");

            System.out.println(" [x] Received '" + message + "'");
            try {
                doWork(message);
            } finally {
                System.out.println(" [x] Done");
                channel.basicAck(envelope.getDeliveryTag(), false);
            }
        }
    };
    channel.basicConsume(TASK_QUEUE_NAME, false, consumer);
}