def _recv(self):
r"""Receive a message from the buffer.
Args:
timeout (float, optional): Time in seconds to wait for a message.
Defaults to self.recv_timeout.
Returns:
tuple (bool, str): The success or failure of receiving a message
and the message received.
"""
if not len(self.address):
raise NoMessages("No messages in queue.")
return (True, self.address.pop(0, self.empty_bytes_msg))
def _recv(self):
r"""Receive a message.
Returns:
tuple (bool, obj): Success or failure of receive and received
message.
"""
method_frame, props, msg = self.channel.basic_get(
queue=self.queue, no_ack=False)
if method_frame:
self.channel.basic_ack(method_frame.delivery_tag)
else: # pragma: debug
raise NoMessages("No messages in connection.")
return (True, msg)
def _recv(self, **kwargs):
r"""Receive a message from the ZMQ socket.
Args:
**kwargs: Additional keyword arguments are passed to socket send.
Returns:
tuple (bool, obj): Success or failure of receive and received
message.
"""
kwargs.setdefault('flags', zmq.NOBLOCK)
with self.socket_lock:
try:
if self.socket.closed: # pragma: debug
self.error("Socket closed")
return (False, self.empty_bytes_msg)
if self.socket_type_name == 'ROUTER':
[identity, total_msg] = self.socket.recv_multipart(**kwargs)
self._recv_identities.add(identity)
else:
total_msg = self.socket.recv(**kwargs)
except zmq.ZMQError as e:
if e.errno == zmq.ETIMEDOUT: # pragma: debug
raise NoMessages("No messages in socket.")
elif e.errno == zmq.EAGAIN:
raise TemporaryCommunicationError(
"Socket not yet available.")
self.special_debug(("Socket could not receive. "
"(errno=%d)"), e.errno) # pragma: debug
raise
# Interpret headers
total_msg, k = self.check_reply_socket_recv(total_msg)
if self.socket_type_name == 'SUB':
topic, msg = total_msg.split(_flag_zmq_filter)
assert(topic == self.topic_filter)
else:
msg = total_msg
# Confirm receipt
if k is not None:
self._n_zmq_recv[k] += 1
else: # pragma: debug
self.info("No reply address.")
return (True, msg)