def notifyProcessesAboutANewOperation(self):
processes = dsProcessManager.GetParticipants()
val = ('', '')
for p in processes:
res = p.DSSocket.SendMessage(DSMessage(DSMessageType.InitRequest, self.Id)) # by passing the Id of the transactin we can follow up the transaction if needed
if res == 'timeout':
val = ('timeout', p.Id)
break
return val
def sendVoteRequest(self):
processes = dsProcessManager.GetParticipants()
self.ProcessesVoteRequestIsSentTo = processes
val = ('', '')
for p in processes:
res = p.DSSocket.SendMessage(DSMessage(DSMessageType.VoteRequest, self.Operation, self.Id))
if res == 'timeout':
val = ('timeout', p.Id)
break
return val
def onReadyTimeout(self):
# in the case of timeout when the participant is in the ready state, we should contact
# other participants to find their state. we are deciding as follow based on the other prticipant's state:
# if other participant's State is INIT => this participant will be ABORT
# if other participant's State is ABORT => this participant will be ABORT
# if other participant's State is PRECOMMIT => this participant will be COMMIT
# if other participant's State is COMMIT => this participant will be COMMIT
# if other participant's State is READY => we will reach another participant, if all others are in ready state,
# we need to wait for the coordinator to be recovered
if self.State == DSParticipantOperationStatus.READY:
processes = dsProcessManager.GetParticipants()
for p in processes:
if p.Id != self.DSProcess.Id:
state = p.DSSocket.SendMessage(DSMessage(DSMessageType.GetParticipantState, self.CoordinatorTransactionId))
if state == DSParticipantOperationStatus.INIT or state == DSParticipantOperationStatus.ABORT:
self.Abort()
elif state == DSParticipantOperationStatus.COMMIT or state == DSParticipantOperationStatus.PRECOMMIT:
self.Commit()
def sendGlobalAbort(self):
processes = dsProcessManager.GetParticipants()
for p in processes:
p.DSSocket.SendMessage(DSMessage(DSMessageType.GlobalAbort, self.Id))
def sendPreCommit(self):
processes = dsProcessManager.GetParticipants()
for p in processes:
p.DSSocket.SendMessage(DSMessage(DSMessageType.PreCommit, self.Id))