connections.remove(s)
if debug:
print receivedData
if "}" in receivedData:
for data in receivedData.split("}"):
if data != "":
data += "}"
# Else if we have received a propose-message, forward it to an acceptor
if data[0:8] == "PROPOSE:":
result = data[8:]
proposed = json.loads(result)
reply = acceptor.receivePropose(proposed)
s.send("ACK:" + json.dumps(reply))
# Else if we have received an ACK-message, an acceptor has accepted our proposal,
# forwards this to the proposer, which in turn broadcasts an accept-message if
# it has the majority of the acceptors accept its proposal
elif data[0:4] == "ACK:":
result = data[4:]
result = json.loads(result)
reply = proposer.receivePromise(result)
if reply == "RESTART":
# In this case, propose your own value again, before others in queue
proposemessage = json.dumps(
proposer.prepare(proposer.myValue))
broadcast("PROPOSE:" + proposemessage)
# When majority is received, check if conflict has occured (previous proposal accepted,
def test_acceptorReceivePropose_withPreviousValues(self):
acceptor.minProposal = 19
acceptor.accepted = {'proposalID': 19, 'value': "I am previous"}
prop = {'proposalID': 20}
self.assertEqual(acceptor.accepted, acceptor.receivePropose(prop))
def test_acceptorReceivePropose_withLowID(self):
acceptor.minProposal = 19
acceptor.accepted = {'proposalID': 19, 'value': "I am previous"}
prop = {'proposalID': 17}
self.assertEqual("NACK", acceptor.receivePropose(prop)['type'])
def test_acceptorReceivePropose_withNonePrevious(self):
acceptor.minProposal = 5
acceptor.accepted = {'proposalID': None, 'value': None}
prop = {'proposalID': 17}
self.assertEqual(acceptor.accepted, acceptor.receivePropose(prop))
connections.remove(s)
if debug:
print receivedData
if "}" in receivedData:
for data in receivedData.split("}"):
if data != "":
data += "}"
# Else if we have received a propose-message, forward it to an acceptor
if data[0:8] == "PROPOSE:":
result = data[8:]
proposed = json.loads(result)
reply = acceptor.receivePropose(proposed)
s.send("ACK:"+json.dumps(reply))
# Else if we have received an ACK-message, an acceptor has accepted our proposal,
# forwards this to the proposer, which in turn broadcasts an accept-message if
# it has the majority of the acceptors accept its proposal
elif data[0:4] == "ACK:":
result = data[4:]
result = json.loads(result)
reply = proposer.receivePromise(result)
if reply == "RESTART":
# In this case, propose your own value again, before others in queue
proposemessage = json.dumps(proposer.prepare(proposer.myValue))
broadcast("PROPOSE:"+proposemessage)
# When majority is received, check if conflict has occured (previous proposal accepted,
def test_acceptorReceivePropose_withLowID(self):
acceptor.minProposal = 19
acceptor.accepted = {'proposalID' : 19, 'value' : "I am previous"}
prop = {'proposalID' : 17}
self.assertEqual("NACK", acceptor.receivePropose(prop)['type'])
def test_acceptorReceivePropose_withPreviousValues(self):
acceptor.minProposal = 19
acceptor.accepted = {'proposalID' : 19, 'value' : "I am previous"}
prop = {'proposalID' : 20}
self.assertEqual(acceptor.accepted, acceptor.receivePropose(prop))
def test_acceptorReceivePropose_withNonePrevious(self):
acceptor.minProposal = 5
acceptor.accepted = {'proposalID' : None, 'value' : None}
prop = {'proposalID' : 17}
self.assertEqual(acceptor.accepted, acceptor.receivePropose(prop))