Celery (Django) + RabbitMQ + nodejs server exchange data - node.js

Question

I have an Django project using Celery with RabbitMQ broker. And now I want to call django (celery) task from NodeJS server.
In my NodeJS I'm using amqplib. Which is allow me to send tasks to RabbitMQ:
amqp.connect('amqp://localhost', function(err, conn) {
conn.createChannel(function(err, ch) {
var q = 'celery';
ch.assertQueue(q, {durable: true});
ch.sendToQueue(q, new Buffer('What should I write here?'));
});
});
My question is what format celery use? What should I write to Buffer to call celery worker?
For example, in my CELERY_ROUTES (django settings) I have blabla.tasks.add:
CELERY_ROUTES = {
...
'blabla.tasks.add': 'high-priority',
}
how to call this blabla.tasks.add function?
I've tried many ways but celery worker giving me error: Received and deleted unknown message. Wrong destination?!?

Answer 1

I found solution http://docs.celeryproject.org/en/latest/internals/protocol.html here.
Example message format is:
{
"id": "4cc7438e-afd4-4f8f-a2f3-f46567e7ca77",
"task": "celery.task.PingTask",
"args": [],
"kwargs": {},
"retries": 0,
"eta": "2009-11-17T12:30:56.527191"
}
So code should be:
amqp.connect('amqp://localhost', function(err, conn) {
conn.createChannel(function(err, ch) {
var q = 'celery';
ch.assertQueue(q, {durable: true});
ch.sendToQueue(q, new Buffer('{"id": "this-is-soo-unique-id", "task": "blabla.tasks.add", "args": [1, 2], "kwargs": {}, "retries": 0}'), {
contentType: 'application/json',
contentEncoding: 'utf-8',
});
});
});