def read(self, routing_key=None, messages_read=10, visibility_timeout=-1.0, block=False, polling_interval=1.0, polling_timeout=None):
messages = []
current_time = time.time()
query = {
'_meta.expired': False,
'_meta.visible_after': {
'$lt': current_time
}
}
if routing_key:
query['_meta.routing_key'] = routing_key
else:
query['_meta.routing_key'] = {
'$exists': False
}
update = {}
if visibility_timeout > -1.0:
update = {
"$set": {
"_meta.visible_after": current_time + visibility_timeout
}
}
raw_messages=[]
if block:
self._block_until_message_available(query, polling_interval, polling_timeout)
if update:
for i in range(0, messages_read):
raw_message = self.queue_collection.find_and_modify(query=query, update=update)
if raw_message:
raw_messages.append(raw_message)
else:
for raw_message in self.queue_collection.find(query).limit(messages_read):
raw_messages.append(raw_message)
for raw_message in raw_messages:
message = Message(dictionary=raw_message, queue_collection=self.queue_collection)
if not message.is_expired():
messages.append(message)
return messages
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)