def _do_paxos(self):
"""Do Paxos algorithm for this Node."""
#Begin running the Acceptor and Proposer in the background
thread.start_new_thread(self._proposer.start, ())
thread.start_new_thread(self._acceptor.start, ())
thread.start_new_thread(_learner, (self, ))
thread.start_new_thread(_shut_down, (self, ))
IP, UDP_PORT = '0.0.0.0', self._ip_table[self._node_id][2]
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind((IP, UDP_PORT))
while True:
data, addr = sock.recvfrom(4096) # buffer size is 1024 bytes
if data == "terminate":
sock.close()
break
#Quick lookup of ID of sender from IP received
sender_ID = filter(lambda row: row[1][0] == addr[0],
self._ip_table.items())[0][0]
message = pickle.loads(data)
#bind sender_ID to message
message = message + (sender_ID, )
#construct deserailized version of message
new_message = []
for field in message:
if type(field) == str:
try:
deserialized_calendar = Calendar.deserialize(field)
new_message.append(deserialized_calendar)
except:
new_message.append(field)
else:
new_message.append(field)
new_message = tuple(new_message)
_parse_message(new_message)
