class Publisher(object):
def __init__(self, database, queue):
self.queue = Queue(database=database, queue=queue)
def push(self, method='PING', arguments={}, topic=None, expire=-1.0):
message = Message()
message.method = method
message.arguments = arguments
self.queue.write(message, routing_key=topic, expire=expire)
class Subscriber(object):
def __init__(self, database, queue, callback, topic=None, check_interval=1.0):
self.queue = Queue(database=database, queue=queue)
self.topic = topic
self.callbacks = [callback]
self.check_interval = check_interval
self.messages = None
# todo : est-ce que ça marche ce qui suit ?
matching = {'topic':topic}
# direct access to the DB, so we can get a "tailable" cursor on the queue collection
self.cursor = self.queue[database][queue].find(matching, tailable=True)
def _get_all_messages(self):
self.messages = self.queue.read(routing_key=self.topic)
def register(self, callback):
self.callbacks.append(callback)
def listen(self, since=None):
self._get_all_messages()
for record_available in self.steps():
if not record_available:
time.sleep(self.check_interval)
def steps(self):
while self.cursor.alive:
try:
record = self.cursor.next()
self.callback(record)
yield True
except StopIteration:
yield False
#todo: pas dit que ça marche ça...
def __init__(self, database, queue, callback, topic=None, check_interval=1.0):
self.queue = Queue(database=database, queue=queue)
self.topic = topic
self.callbacks = [callback]
self.check_interval = check_interval
self.messages = None
# todo : est-ce que ça marche ce qui suit ?
matching = {'topic':topic}
# direct access to the DB, so we can get a "tailable" cursor on the queue collection
self.cursor = self.queue[database][queue].find(matching, tailable=True)
def __init__(self, database, queue): self.queue = Queue(database=database, queue=queue)