def sendNomination(self, name: str, instId: int, viewNo: int,
lastOrderedSeqNo: int):
"""
Broadcast a nomination message with the given parameters.
:param name: node name
:param instId: instance id
:param viewNo: view number
"""
self.send(Nomination(name, instId, viewNo, lastOrderedSeqNo))
def testBlacklistNodeOnMultipleNominations(looper, txnPoolNodeSet, ready):
"""
A node that sends multiple nominations must be blacklisted by other nodes
"""
A, B, C, D = txnPoolNodeSet
# B sends more than 2 nominations
for i in range(3):
B.send(Nomination(D.name, 0, B.viewNo))
# B should be blacklisted by A, C, D
def chk():
for node in A, C, D:
assert node.isNodeBlacklisted(B.name)
timeout = waits.expectedPoolNominationTimeout(len(txnPoolNodeSet))
looper.run(eventually(chk, retryWait=1, timeout=timeout))
def getElectionMsgsForInstance(self, instId: int) -> \
Sequence[Union[Nomination, Primary]]:
"""
Get nomination and primary messages for instance with id `instId`.
"""
msgs = []
replica = self.replicas[instId]
# If a primary for this instance has been selected then send a
# primary declaration for the selected primary
if replica.isPrimary is not None:
msgs.append(Primary(replica.primaryName, instId, self.viewNo,
replica.last_ordered_3pc[1]))
else:
# If a primary for this instance has not been selected then send
# nomination and primary declaration that this node made for the
# instance with id `instId`
if self.didReplicaNominate(instId):
nm, seqNo = self.nominations[instId][replica.name]
msgs.append(Nomination(nm, instId, self.viewNo, seqNo))
if self.didReplicaDeclarePrimary(instId):
nm, seqNo = self.primaryDeclarations[instId][replica.name]
msgs.append(Primary(nm, instId, self.viewNo, seqNo))
return msgs
def nominationByNode(name: str, byNode: TestNode, instId: int):
return Nomination(name, instId, byNode.viewNo,
byNode.replicas[instId].lastOrderedPPSeqNo[1])
