chu

I got sick of needing a Pika listener on every app, so I made a small library called Chu, that does it for you. I'll update the docs soon, but essentially you can install Chu:

chu @ git+https://github.com/Sigularusrex/chu@main

make a management command like this:

from chu.consumer import ThreadedConsumer
from django.core.management.base import BaseCommand

from gc_api.subscribers.chu_callback import chu_callback
from settings import RABBITMQ_BROKER_URL


class Command(BaseCommand):
	help = "Launches Listener for Service A events: RabbitMQ"

	def handle(self, *args, **options):
		consumer = ThreadedConsumer(
			amqp_url=RABBITMQ_BROKER_URL,
			exchange="exchange-name",
			exchange_type="topic",
			threads=5,
			routing_keys=["event_topic.*"],
			callback=chu_callback,
		)
		# Start consuming messages
		consumer.run()

Provide it with a callback function (Mine just blindly publishes to Celery 😄 ) import json

import celery_pubsub


def chu_callback(ch, method, properties, body):
	try:
		print("External message received in Service A")
		data = json.loads(body)
		celery_pubsub.publish(method.routing_key, data)
		print("Message published in Service A")
	except Exception as e:
		print(f"Error publishing message: {e}")

...and you're good to go.