def _maybe_subscribe(self, subscription):
""" May be subscribe to queue. """
if "queue" in subscription:
queue_name = self._maybe_declare_queue(subscription["queue"])
else:
raise AmqpcltError("subscription must contain a queue")
exchange_name = None
if "exchange" in subscription:
exchange_name = self._maybe_declare_exchange(
subscription["exchange"])
if exchange_name:
self._maybe_bind(queue_name, exchange_name,
subscription.get("routing_key", ""))
if queue_name not in self._consume:
LOGGER.debug("incoming consume from queue: %s" % (queue_name, ))
tag = get_uuid()
params = {
"consumer_callback": self._handle_delivery,
"queue": queue_name,
"consumer_tag": tag
}
if not self._config["reliable"]:
params["no_ack"] = True
self._channel.basic_consume(**params)
self._consume[queue_name] = tag
def _maybe_subscribe(self, subscription):
""" May be subscribe to queue. """
if "queue" in subscription:
queue_name = self._maybe_declare_queue(subscription["queue"])
else:
raise AmqpcltError("subscription must contain a queue")
exchange_name = None
if "exchange" in subscription:
exchange_name = self._maybe_declare_exchange(
subscription["exchange"])
if exchange_name:
self._maybe_bind(queue_name,
exchange_name,
subscription.get("routing_key", ""))
if queue_name not in self._consume:
LOGGER.debug("incoming consume from queue: %s" % (queue_name, ))
tag = get_uuid()
params = {"callback": self._handle_message,
"no_ack": False,
"queue": queue_name,
"consumer_tag": tag}
if not self._config["reliable"]:
params["no_ack"] = True
self._channel.basic_consume(**params)
self._consume[queue_name] = tag
def _maybe_declare_queue(self, queue_props):
""" May be declare a queue. """
queue_name = queue_props.get("name", "")
if queue_name and queue_name in self._queue:
return queue_name
if not queue_name:
queue_name = get_uuid()
self._channel.queue_declare(
queue=queue_name,
durable=queue_props.get("durable", False),
exclusive=queue_props.get("exclusive", False),
auto_delete=queue_props.get("auto_delete", False),
arguments=queue_props.get("arguments", dict()))
# if not queue_name:
# # amq generated queue
# queue_name = result.method.queue
LOGGER.debug("incoming queue declared: %s" % (queue_name, ))
self._queue[queue_name] = 1
return queue_name
def _maybe_declare_queue(self, queue_props):
""" May be declare a queue. """
queue_name = queue_props.get("name", "")
if queue_name and queue_name in self._queue:
return queue_name
if not queue_name:
queue_name = get_uuid()
self._channel.queue_declare(
queue=queue_name,
durable=queue_props.get("durable", False),
exclusive=queue_props.get("exclusive", False),
auto_delete=queue_props.get("auto_delete", False),
arguments=queue_props.get("arguments", dict()))
# if not queue_name:
# # amq generated queue
# queue_name = result.method.queue
LOGGER.debug("incoming queue declared: %s" % (queue_name, ))
self._queue[queue_name] = 1
return queue_name
def test_get_uuid(self):
""" Test get_uuid function. """
self.assert_(type(get_uuid()) == str)