def ack(self):
"""Acknowledge Message.
:return:
"""
if not self._method:
raise AMQPMessageError('Message.ack only available on '
'incoming messages')
self._channel.basic.ack(delivery_tag=self._method['delivery_tag'])
def reject(self, requeue=True):
"""Reject Message.
:param bool requeue: Requeue the message
"""
if not self._method:
raise AMQPMessageError('Message.reject only available on '
'incoming messages')
self._channel.basic.reject(delivery_tag=self._method['delivery_tag'],
requeue=requeue)
def nack(self, requeue=True):
"""Negative Acknowledgement.
:param bool requeue:
"""
if not self._method:
raise AMQPMessageError('Message.nack only available on '
'incoming messages')
self._channel.basic.nack(delivery_tag=self._method['delivery_tag'],
requeue=requeue)
def _basic_return(self, frame_in):
"""Handle a Basic Return Frame and treat it as an error.
:param specification.Basic.Return frame_in: Amqp frame.
:return:
"""
reply_text = try_utf8_decode(frame_in.reply_text)
message = (
"Message not delivered: %s (%s) to queue '%s' from exchange '%s'" %
(reply_text, frame_in.reply_code, frame_in.routing_key,
frame_in.exchange))
exception = AMQPMessageError(message, reply_code=frame_in.reply_code)
self.exceptions.append(exception)
def ack(self):
"""Acknowledge Message.
:raises AMQPInvalidArgument: Invalid Parameters
:raises AMQPChannelError: Raises if the channel encountered an error.
:raises AMQPConnectionError: Raises if the connection
encountered an error.
:return:
"""
if not self._method:
raise AMQPMessageError('Message.ack only available on '
'incoming messages')
self._channel.basic.ack(delivery_tag=self._method['delivery_tag'])
def reject(self, requeue=True):
"""Reject Message.
:raises AMQPInvalidArgument: Invalid Parameters
:raises AMQPChannelError: Raises if the channel encountered an error.
:raises AMQPConnectionError: Raises if the connection
encountered an error.
:param bool requeue: Requeue the message
"""
if not self._method:
raise AMQPMessageError('Message.reject only available on '
'incoming messages')
self._channel.basic.reject(delivery_tag=self._method['delivery_tag'],
requeue=requeue)
def nack(self, requeue=True):
"""Negative Acknowledgement.
:raises AMQPInvalidArgument: Invalid Parameters
:raises AMQPChannelError: Raises if the channel encountered an error.
:raises AMQPConnectionError: Raises if the connection
encountered an error.
:param bool requeue:
"""
if not self._method:
raise AMQPMessageError('Message.nack only available on '
'incoming messages')
self._channel.basic.nack(delivery_tag=self._method['delivery_tag'],
requeue=requeue)
def _publish_confirm(self, send_buffer):
"""Confirm that message was published successfully.
:param list send_buffer:
:rtype: bool
"""
confirm_uuid = self._channel.rpc.register_request(
['Basic.Ack', 'Basic.Nack'])
self._channel.write_frames(send_buffer)
result = self._channel.rpc.get_request(confirm_uuid, raw=True)
self._channel.check_for_errors()
if isinstance(result, pamqp_spec.Basic.Ack):
return True
elif isinstance(result, pamqp_spec.Basic.Nack):
return False
else:
raise AMQPMessageError('Unexpected Error: %s - %s' %
(result, dict(result)))
