def recvAndSet(sock, i):
global mesSlot, recvConds, ballot, myVal, procNo, acceptNum, acceptVal, states
global activeFailed, linkSuc
global queue
global acceptBallot
global acceptSlot, acceptCond
global promiseSlot, promiseCond
global myBlock, tempBlock
global leader
global balance
global decideCond
while True:
le = safeRec(sock, 2)
le = unpack(">H", le)[0]
mes = safeRec(sock, le)
newone = paxos_pb2.Prepare()
newone.ParseFromString(mes)
# getting Prepare, set the ballot number if greater and return promise
if newone.type == 1:
if (newone.ballot.num > ballot.num or
(newone.ballot.num == ballot.num and newone.ballot.pid >=
procNo)) and newone.ballot.depth >= len(ballot.blockChain):
ballot.num = newone.ballot.num
leader = False
if newone.ballot.depth > ballot.depth:
sendForRecovery(ballot.depth, newone.ballot.depth)
ballot.depth = newone.ballot.depth
returned = paxos_pb2.Promise()
returned.type = 3
returned.ballot.CopyFrom(newone.ballot)
returned.acceptNum.CopyFrom(acceptNum)
returned.acceptVal.CopyFrom(acceptVal)
threading.Thread(target=waitSend, args=(
sock,
returned,
)).start()
elif newone.type == 3:
if len(promiseSlot) <= 2:
newone = paxos_pb2.Promise()
newone.ParseFromString(mes)
promiseSlot.append((i, newone))
if len(promiseSlot) == 2:
promiseCond.acquire()
promiseCond.notifyAll()
promiseCond.clear()
promiseCond.release()
# promiseSlot to be cleared
elif newone.type == 4:
newone = paxos_pb2.Accept()
newone.ParseFromString(mes)
if (newone.myVal.num > ballot.num or
(newone.myVal.num == ballot.num and newone.myVal.pid >
ballot.pid)) and newone.myVal.depth >= len(states.blockChain):
leader = False
insi = newone.myVal.trans
states.queue.append((i, insi))
then = paxos_pb2.Accepted()
then.type = 5
acceptNum = newone.ballot
acceptVal = newone.myVal
then.ballot.CopyFrom(newone.ballot)
then.acceptVal.CopyFrom(newone.myVal)
threading.Thread(target=waitSend, args=(
sock,
then,
)).start()
continue
elif newone.type == 5:
if len(acceptSlot) < 2:
newone = paxos_pb2.Accepted()
newone.ParseFromString(mes)
if newone.ballot == acceptBallot:
acceptSlot.append(newone)
elif len(acceptSlot) == 2:
acceptCond.acquire()
acceptCond.notifyAll()
acceptSlot.clear()
acceptCond.release()
# acceptSlot to be cleared
elif newone.type == 6:
newone = paxos_pb2.Decide()
newone.ParseFromString(mes)
if newone.val not in states.blockChain:
states.blockChain.append(newone.val)
for ite in newone.val.trans:
if ite.rcvr == procNo:
states.balance += ite.amt
ballot.depth = len(states.blockChain)
# clearQueue(i)
tempBlock = paxos_pb2.Block()
decideCond.acquire()
decideCond.notifyAll()
decideCond.release()
elif newone.type == 7:
newone = paxos_pb2.Recover()
newone.ParseFromString(mes)
if newone.depth < ballot.depth:
then = paxos_pb2.RepRecover()
then.type = 8
then.depth = newone.depth
then.block.CopyFrom(states.blockChain[depth])
waitSend(sock, then)
elif newone.type == 8:
newone = paxos_pb2.RepRecover()
newone.ParseFromString(mes)
addToBlockChain(newone)
continue
def recvAndSet(sock, i):
global recvConds, ballot, myVal, procNo, acceptNum, acceptVal, states
global activeFailed, linkSuc
global acceptBallot
global acceptSlot, acceptCond
global promiseSlot, promiseCond
global myBlock, tempBlock
global decideCond
global acceptingPromise
global acceptingAcced
global promiseSlotLock
global blockChainLock
global acceptSlotLock
while True:
le = safeRec(sock, 2)
if le == b'':
socks[i] = -1
linkSuc[i - 1] = False
return
le = unpack(">H", le)[0]
mes = safeRec(sock, le)
newone = paxos_pb2.Prepare()
newone.ParseFromString(mes)
# getting Prepare, set the ballot number if greater and return promise
if activeFailed[i - 1] == True:
continue
if newone.type == 1:
print("Prepared")
# print(newone.ballot)
# print(ballot)
if newone.ballot.depth > len(states.blockChain):
ask = paxos_pb2.Recover()
ask.type = 7
threading.Thread(target=waitSend, args=(
sock,
ask,
)).start()
if newone.ballot.depth > ballot.depth or (
newone.ballot.depth == ballot.depth and newone.ballot.num >
ballot.num) or (newone.ballot.depth == ballot.depth
and newone.ballot.num == ballot.num
and newone.ballot.pid >= ballot.pid):
ballot.CopyFrom(newone.ballot)
#if newone.ballot.depth > ballot.depth:
# sendForRecovery(ballot.depth, newone.ballot.depth)
# ballot.depth = newone.ballot.depth
returned = paxos_pb2.Promise()
returned.type = 3
returned.ballot.CopyFrom(newone.ballot)
returned.acceptNum.CopyFrom(acceptNum)
returned.acceptVal.CopyFrom(acceptVal)
print("Sending")
threading.Thread(target=waitSend, args=(
sock,
returned,
)).start()
elif newone.type == 3:
print("Promised")
newone = paxos_pb2.Promise()
newone.ParseFromString(mes)
promiseSlotLock.acquire()
if newone.ballot == ballot and acceptingPromise:
print("Still in phase")
print("Length: ", len(promiseSlot))
if len(promiseSlot) < 2:
# print("Going on")
promiseSlot.append((i, newone))
if len(promiseSlot) == 2:
# print("Here")
promiseCond.acquire()
promiseCond.notifyAll()
acceptingPromise = False
# promiseSlot.clear()
promiseCond.release()
promiseSlotLock.release()
# else:
# print("Debug: promiseSlot not equal 2 ", promiseSlot)
# else:
# print("Debug: promiseSlot ", promiseSlot)
# else:
# print("Promised, newone.ballot ", newone.ballot)
# print("Promised, ballot ", ballot)
# # promiseSlot to be cleared, not here
elif newone.type == 4:
print("Got accept from " + str(i))
newone = paxos_pb2.Accept()
newone.ParseFromString(mes)
if newone.ballot.depth > len(states.blockChain):
ask = paxos_pb2.Recover()
ask.type = 7
threading.Thread(target=waitSend, args=(
sock,
ask,
)).start()
if newone.ballot.depth > ballot.depth or (
newone.ballot.depth == ballot.depth and newone.ballot.num >
ballot.num) or (newone.ballot.depth == ballot.depth
and newone.ballot.num == ballot.num
and newone.ballot.pid >= ballot.pid):
print("Sending back accepted")
then = paxos_pb2.Accepted()
then.type = 5
acceptNum.CopyFrom(newone.ballot)
acceptVal.CopyFrom(newone.myVal)
then.ballot.CopyFrom(newone.ballot)
then.acceptVal.CopyFrom(newone.myVal)
threading.Thread(target=waitSend, args=(
sock,
then,
)).start()
else:
print("Did not accept")
print("newone.ballot ", newone.ballot)
print("local ballot: ", ballot)
elif newone.type == 5:
print("Accepted from " + str(i))
newone = paxos_pb2.Accepted()
newone.ParseFromString(mes)
acceptSlotLock.acquire()
if len(acceptSlot) < 2 and acceptingAcced:
if newone.ballot == acceptBallot:
acceptSlot.append(newone)
if len(acceptSlot) == 2:
acceptCond.acquire()
acceptCond.notifyAll()
acceptingAcced = False
acceptSlot.clear()
acceptCond.release()
acceptSlotLock.release()
# acceptSlot to be cleared
elif newone.type == 6:
newone = paxos_pb2.Decide()
newone.ParseFromString(mes)
if newone.ballot.depth > len(states.blockChain):
ask = paxos_pb2.Recover()
ask.type = 7
threading.Thread(target=waitSend, args=(
sock,
ask,
)).start()
if newone.val not in states.blockChain:
blockChainLock.acquire()
states.blockChain.append(newone.val)
blockChainLock.release()
for ite in newone.val.trans:
if ite.rcvr == procNo:
states.balance += ite.amt
ballot.depth = len(states.blockChain)
if newone.val == myBlock:
print("cleaning myBLock")
myBlock = paxos_pb2.Block()
if newone.val == tempBlock:
print("cleaning tempBlock and acceptVal")
tempBlock = paxos_pb2.Block()
if newone.val == acceptVal:
print("cleaning acceptVal")
acceptVal = paxos_pb2.Block()
else:
print("Error: ")
print(newone.val)
print(acceptVal)
decideCond.acquire()
decideCond.notifyAll()
decideCond.release()
elif newone.type == 7:
zaWarudo = states.blockChain.copy()
returned = paxos_pb2.RepRecover()
returned.type = 8
returned.insi.extend(zaWarudo)
threading.Thread(target=waitSend, args=(
sock,
returned,
)).start()
# newone = paxos_pb2.Recover()
# newone.ParseFromString(mes)
# if newone.depth < ballot.depth:
# then = paxos_pb2.RepRecover()
# then.type = 8
# then.depth = newone.depth
# then.block.CopyFrom(states.blockChain[depth])
# waitSend(sock, then)
elif newone.type == 8:
thend = paxos_pb2.RepRecover()
thend.ParseFromString(mes)
# print("Type 8: ", thend)
threading.Thread(target=recovery, args=(thend, )).start()