Examples with DeliverCallback com.rabbitmq.client.DeliverCallback used on opensource projects

Example 56 with DeliverCallback

use of com.rabbitmq.client.DeliverCallback in project study-by-myself by Howinfun.

the class Receive2 method main.

public static void main(String[] args) throws Exception {
    ConnectionFactory factory = ConnectionFactoryUtils.getFactory();
    Connection connection = factory.newConnection();
    Channel channel = connection.createChannel();
    channel.queueDeclare(queueName, false, false, false, null);
    channel.basicQos(1);
    DeliverCallback deliverCallback = (consumerTag, delivery) -> {
        String message = new String(delivery.getBody(), "UTF-8");
        ThreadUtil.sleep(4, TimeUnit.SECONDS);
        System.out.println(message);
        // 是否批量提交
        boolean multiple = false;
        channel.basicAck(delivery.getEnvelope().getDeliveryTag(), multiple);
    };
    boolean autoAck = false;
    channel.basicConsume(queueName, autoAck, deliverCallback, consumerTag -> {
    });
}

Example 57 with DeliverCallback

use of com.rabbitmq.client.DeliverCallback in project code-study by chenyaoBOY.

the class WorkConsumerAckImmediately method main.

public static void main(String[] args) throws Exception {
    // 创建连接工厂
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("127.0.0.1");
    // 创建连接
    Connection connection = factory.newConnection();
    // 创建通道
    Channel channel = connection.createChannel();
    // 这里声明队列的原因是因为 消费者可能会早于生产者启动，为了确保队列一定存在而创建的
    // 所以如果队列存在，那么直接订阅即可
    channel.queueDeclare(queueName, true, false, false, null);
    channel.basicQos(1);
    // 由于消息推送是异步的，需要定义回调
    DeliverCallback deliverCallback = (consumerTag, delivery) -> {
        String message = new String(delivery.getBody(), StandardCharsets.UTF_8);
        System.out.println(message + "      Done");
        channel.basicAck(delivery.getEnvelope().getDeliveryTag(), false);
        try {
            Thread.sleep(70000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    };
    channel.basicConsume(queueName, false, deliverCallback, (consumerTag, sig) -> {
    });
}

Example 58 with DeliverCallback

use of com.rabbitmq.client.DeliverCallback in project code-study by chenyaoBOY.

the class SubscribeConsumerTemporaryQueue2 method main.

public static void main(String[] args) throws Exception {
    // 创建连接工厂
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("127.0.0.1");
    // 创建连接
    Connection connection = factory.newConnection();
    // 创建通道
    Channel channel = connection.createChannel();
    // 临时队列，连接断开，队列消失
    // amq.gen-jnnX7acGeSY50L4Wi_DK4g
    String queueRandom = channel.queueDeclare().getQueue();
    channel.queueBind(queueRandom, exchangeName, "");
    // 由于消息推送是异步的，需要定义回调
    DeliverCallback deliverCallback = (consumerTag, delivery) -> {
        String message = new String(delivery.getBody(), StandardCharsets.UTF_8);
        doWork(message);
        System.out.println(message + "      Done");
    };
    channel.basicConsume(queueRandom, true, deliverCallback, (consumerTag, sig) -> {
    });
}

Example 59 with DeliverCallback

use of com.rabbitmq.client.DeliverCallback in project code-study by chenyaoBOY.

the class WorkConsumer1 method main.

/**
 * By default, RabbitMQ will send each message to the next consumer, in sequence.
 * On average every consumer will get the same number of messages.
 * This way of distributing messages is called round-robin
 * 默认情况下，多个consumer会按顺序消费队列消息，模式称为：round-robin
 * consumer之间是对等的公平的
 * @param args
 * @throws Exception
 */
public static void main(String[] args) throws Exception {
    // 创建连接工厂
    ConnectionFactory factory = new ConnectionFactory();
    factory.setHost("127.0.0.1");
    // 创建连接
    Connection connection = factory.newConnection();
    // 创建通道
    Channel channel = connection.createChannel();
    // 这里声明队列的原因是因为 消费者可能会早于生产者启动，为了确保队列一定存在而创建的
    // 所以如果队列存在，那么直接订阅即可
    channel.queueDeclare(queueName, false, false, false, null);
    // 由于消息推送是异步的，需要定义回调
    DeliverCallback deliverCallback = (consumerTag, delivery) -> {
        String message = new String(delivery.getBody(), StandardCharsets.UTF_8);
        doWork(message);
        System.out.println(message + "      Done");
    };
    channel.basicConsume(queueName, true, deliverCallback, (consumerTag, sig) -> {
    });
}