def send_and_receive_response(address, message, timeout=10):
"""
j.w. ale dekoduje wynik i go zwraca, lub rzuca otrzymany w wiadomoĊci exception
"""
result = send_and_receive(address, message, timeout)
typ = result['message']
if typ == messages.RESULT:
return result['result']
elif typ == messages.ERROR:
e = exception_deserialize(result)
if e is None:
raise exceptions.MessageCorrupted()
raise e
else:
raise exceptions.ServiceBusException("Wrong message type received")
def decode_header(self, packet):
if len(packet) < self.header.size:
raise exceptions.MessageCorrupted()
busname, ver, psize, iv, cmpr, trim, resreq = self.header.unpack(
packet)
# not our service bus
if busname != self._busname:
raise exceptions.NotOurMessage()
# check protocol version
if ver != self._version:
raise exceptions.ServiceBusException(
"Unknown service bus protocol version")
return (psize, iv, cmpr, trim, resreq)
def _plain_deserialize(self, msg):
# raw message or header, data tuple?
if type(msg) is tuple:
psize, iv, cmpr, trim, resreq = msg[0]
msg = msg[1]
else:
HS = self.header.size
header = msg[:HS]
msg = msg[HS:]
psize, iv, cmpr, trim, resreq = self.decode_header(header)
# check data size declared in header
#if (len(msg)-HS) != psize:
# raise exceptions.MessageCorrupted()
try:
return self.bin_2_data(msg), resreq
except:
raise exceptions.MessageCorrupted()
def _encrypted_deserialize(self, msg):
"""
msg - message or header tuple of header parameters and message body (tithout header)
"""
if type(msg) is tuple:
psize, iv, cmpr, trim, resreq = msg[0]
msg = msg[1]
else:
HS = self.header.size
header = msg[:HS]
msg = msg[HS:]
psize, iv, cmpr, trim, resreq = self.decode_header(header)
# decrypt
try:
pckt = {"iv": iv, "payload": msg, "trim": trim}
msg = self.decrypt(pckt, self._passwd)
except Exception:
raise exceptions.MessageCorrupted()
# unpack message
return self.bin_2_data(msg), resreq
def bin_2_data(bin):
return msgpack.unpackb(bin, object_hook=decode_obj_types)
try:
pass
except msgpack.exceptions.UnpackException:
raise exceptions.MessageCorrupted()
def bin_2_data(bin):
try:
return bson.loads(bin)
except:
raise exceptions.MessageCorrupted()
def bin_2_data(bin):
try:
return dict(py3bson.parse_bytes(bin))
except py3bson.BSON_Error:
raise exceptions.MessageCorrupted()
def bin_2_data(bin):
try:
return pickle.loads(bin)
except Exception as e:
raise exceptions.MessageCorrupted()