mirror of https://github.com/zulip/zulip.git
65 lines
2.4 KiB
Python
65 lines
2.4 KiB
Python
|
#!/usr/bin/python
|
||
|
|
from django.conf import settings
|
||
|
|
import pika
|
||
|
|
import simplejson
|
||
|
|
|
||
|
|
# This simple queuing library doesn't expose much of the power of
|
||
|
|
# rabbitmq/pika's queuing system; its purpose is to just provide an
|
||
|
|
# interface for external files to put things into queues and take them
|
||
|
|
# out from bots without having to import pika code all over our codebase.
|
||
|
|
class SimpleQueue(object):
|
||
|
|
connection = None
|
||
|
|
channel = None
|
||
|
|
queues = set()
|
||
|
|
_inited = False
|
||
|
|
|
||
|
|
def __init__(self):
|
||
|
|
pass
|
||
|
|
|
||
|
|
def initialize(self):
|
||
|
|
# Initialize the connection
|
||
|
|
credentials = pika.PlainCredentials('humbug', settings.RABBITMQ_PASSWORD)
|
||
|
|
parameters = pika.ConnectionParameters('localhost',
|
||
|
|
credentials=credentials)
|
||
|
|
self.connection = pika.BlockingConnection(parameters)
|
||
|
|
self.channel = self.connection.channel()
|
||
|
|
self._inited = True
|
||
|
|
|
||
|
|
def create_queue(self, queue_name):
|
||
|
|
# Initialize the queues we need
|
||
|
|
self.channel.queue_declare(queue=queue_name, durable=True)
|
||
|
|
self.queues.add(queue_name)
|
||
|
|
|
||
|
|
def publish(self, queue_name, body):
|
||
|
|
if not self._inited:
|
||
|
|
self.initialize()
|
||
|
|
if queue_name not in self.queues:
|
||
|
|
self.create_queue(queue_name)
|
||
|
|
self.channel.basic_publish(exchange='',
|
||
|
|
routing_key=queue_name,
|
||
|
|
properties=pika.BasicProperties(delivery_mode = 2,),
|
||
|
|
body=body)
|
||
|
|
|
||
|
|
def json_publish(self, queue_name, body):
|
||
|
|
return self.publish(queue_name, simplejson.dumps(body))
|
||
|
|
|
||
|
|
def register_consumer(self, queue_name, callback):
|
||
|
|
if not self._inited:
|
||
|
|
self.initialize()
|
||
|
|
if queue_name not in self.queues:
|
||
|
|
self.create_queue(queue_name)
|
||
|
|
|
||
|
|
def wrapped_callback(ch, method, properties, body):
|
||
|
|
callback(ch, method, properties, body)
|
||
|
|
ch.basic_ack(delivery_tag=method.delivery_tag)
|
||
|
|
|
||
|
|
self.channel.basic_consume(wrapped_callback, queue=queue_name)
|
||
|
|
|
||
|
|
def register_json_consumer(self, queue_name, callback):
|
||
|
|
def wrapped_callback(ch, method, properties, body):
|
||
|
|
return callback(ch, method, properties, simplejson.loads(body))
|
||
|
|
return self.register_consumer(queue_name, wrapped_callback)
|
||
|
|
|
||
|
|
def start_consuming(self):
|
||
|
|
self.channel.start_consuming()
|