32 lines
892 B
Python
32 lines
892 B
Python
from Messaging.messaginginterface import Message
|
|
import umsgpack
|
|
|
|
# Uses MessagePack for message transfer.
|
|
|
|
class Proposal(Message):
|
|
ballot_number = None
|
|
vote = None
|
|
|
|
def __init__(self):
|
|
pass
|
|
|
|
def serialise(self) -> str:
|
|
return umsgpack.packb({"ballot": self.ballot_number, "vote": self.vote})
|
|
|
|
def deserialise(self, binary: bytearray):
|
|
'''
|
|
Deserialises a given proposal message into a proposal object.
|
|
'''
|
|
obj = umsgpack.unpackb(binary)
|
|
old_ballot = self.ballot_number
|
|
old_vote = self.vote
|
|
try:
|
|
self.ballot_number = obj['ballot']
|
|
self.vote = obj['vote']
|
|
except:
|
|
# Reset the values in case they have been changed.
|
|
self.ballot_number = old_ballot
|
|
self.vote = old_vote
|
|
print("Error: binary object is not a proposal")
|
|
|
|
|