amqp-nodeAMQP 0-9-1 library and client for Node.JS
A library for making AMQP 0-9-1 clients for Node.JS, and an AMQP 0-9-1 client for Node.JS v10+. This library does not implement AMQP1.0 or AMQP0-10.
npm install amqplib
❤️ Help Support Jack
One of my close friends, Jack, was recently diagnosed with terminal brain cancer (grade 4 astrocytoma). He’s a young father facing an unimaginably tough road with remarkable courage. Thanks to chemotherapy, radiotherapy, and your support, two of his tumours have stopped showing activity. Donations help Jack continue accessing promising complementary therapies, attend hospital appointments, and spend meaningful time with his children.
If you’ve benefited from amqplib, please consider supporting Jack’s journey through his J Crushing Cancer gofundme page. Thank you - @cressie176
RabbitMQ Compatibility
Only 0.10.7 and later versions of this library are compatible with RabbitMQ 4.1.0 (and later releases).
Links
Project status
- Expected to work
- Complete high-level and low-level APIs (i.e., all bits of the protocol)
- Stable APIs
- A fair few tests
- Measured test coverage
- Ports of the RabbitMQ tutorials as examples
- Used in production
Still working on:
- Getting to 100% (or very close to 100%) test coverage
Callback API example
const amqplib = require('amqplib/callback_api');
const queue = 'tasks';
amqplib.connect('amqp://localhost', (err, conn) => {
if (err) throw err;
// Listener
conn.createChannel((err, ch2) => {
if (err) throw err;
ch2.assertQueue(queue);
ch2.consume(queue, (msg) => {
if (msg !== null) {
console.log(msg.content.toString());
ch2.ack(msg);
} else {
console.log('Consumer cancelled by server');
}
});
});
// Sender
conn.createChannel((err, ch1) => {
if (err) throw err;
ch1.assertQueue(queue);
setInterval(() => {
ch1.sendToQueue(queue, Buffer.from('something to do'));
}, 1000);
});
});
Promise/Async API example
const amqplib = require('amqplib');
(async () => {
const queue = 'tasks';
const conn = await amqplib.connect('amqp://localhost');
const ch1 = await conn.createChannel();
await ch1.assertQueue(queue);
// Listener
ch1.consume(queue, (msg) => {
if (msg !== null) {
console.log('Received:', msg.content.toString());
ch1.ack(msg);
} else {
console.log('Consumer cancelled by server');
}
});
// Sender
const ch2 = await conn.createChannel();
setInterval(() => {
ch2.sendToQueue(queue, Buffer.from('something to do'));
}, 1000);
})();
Running tests
npm test
To run the tests RabbitMQ is required. Either install it with your package manager, or use docker to run a RabbitMQ instance.
docker run -d --name amqp.test -p 5672:5672 rabbitmq
If prefer not to run RabbitMQ locally it is also possible to use a
instance of RabbitMQ hosted elsewhere. Use the URL environment
variable to configure a different amqp host to connect to. You may
also need to do this if docker is not on localhost; e.g., if it's
running in docker-machine.
One public host is dev.rabbitmq.com:
URL=amqp://dev.rabbitmq.com npm test
NB You may experience test failures due to timeouts if using the dev.rabbitmq.com instance.
You can run it under different versions of Node.JS using nave:
nave use 10 npm test
or run the tests on all supported versions of Node.JS in one go:
make test-all-nodejs
(which also needs nave installed, of course).
Lastly, setting the environment variable LOG_ERRORS will cause the
tests to output error messages encountered, to the console; this is
really only useful for checking the kind and formatting of the errors.
LOG_ERRORS=true npm test
Test coverage
make coverage
open file://`pwd`/coverage/lcov-report/index.html