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