amqplib/examples/tutorials/worker.js

An AMQP 0-9-1 (e.g., RabbitMQ) library and client.

#!/usr/bin/env node
// Process tasks from the work queue

const amqp = require('amqplib');

const queue = 'task_queue';

(async () => {
  try {
    const connection = await amqp.connect('amqp://localhost');
    process.once('SIGINT', async () => {
      await connection.close();
    });

    const channel = await connection.createChannel();
    await channel.assertQueue(queue, { durable: true });

    channel.prefetch(1);
    await channel.consume(
      queue,
      (message) => {
        const text = message.content.toString();
        console.log(" [x] Received '%s'", text);
        const seconds = text.split('.').length - 1;
        setTimeout(() => {
          console.log(' [x] Done');
          channel.ack(message);
        }, seconds * 1000);
      },
      { noAck: false },
    );

    console.log(' [*] Waiting for messages. To exit press CTRL+C');
  } catch (err) {
    console.warn(err);
  }
})();