def generateEvents(self, result_events, start_time, end_time, reset):
current_time = start_time
last_recover_time = start_time
if self.failure_generator is None:
for u in self.children:
u.generateEvents(result_events, start_time, end_time, True)
return
while True:
if reset:
self.failure_generator.reset(current_time)
failure_time = self.failure_generator.generateNextEvent(
current_time)
current_time = failure_time
if current_time > end_time:
for u in self.children:
u.generateEvents(result_events, last_recover_time,
end_time, True)
break
fail_event = Event(Event.EventType.Failure, current_time, self)
result_events.addEvent(fail_event)
if self.fast_forward:
fail_event.ignore = True
for u in self.children:
u.generateEvents(result_events, last_recover_time,
current_time, True)
self.recovery_generator.reset(current_time)
recovery_time = self.recovery_generator.generateNextEvent(
current_time)
assert (recovery_time > failure_time)
current_time = recovery_time
fail_event.next_recovery_time = recovery_time
if current_time > end_time:
break
if self.fast_forward:
result_events.addEvent(
Event(Event.EventType.Recoverd,
current_time,
self,
ignore=True))
else:
result_events.addEvent(
Event(Event.EventType.Recovered, current_time, self))
last_recover_time = current_time
def generateEvents(self, result_events, start_time, end_time, reset):
if start_time < self.start_time:
start_time = self.start_time
current_time = start_time
last_recover_time = start_time
if self.failure_generator is None:
failure_intervals = deepcopy(self.failure_intervals)
for [fail_time, recover_time, flag] in failure_intervals:
self.addCorrelatedFailures(result_events, fail_time,
recover_time, flag)
for u in self.children:
u.generateEvents(result_events, start_time, end_time, True)
return
while True:
if reset:
self.failure_generator.reset(current_time)
failure_time = self.failure_generator.generateNextEvent(
current_time)
current_time = failure_time
self.recovery_generator.reset(current_time)
recovery_time = self.recovery_generator.generateNextEvent(
current_time)
assert (recovery_time > failure_time)
if current_time > end_time:
failure_intervals = deepcopy(self.failure_intervals)
for [fail_time, recover_time, flag] in failure_intervals:
self.addCorrelatedFailures(result_events, fail_time,
recover_time, flag)
for u in self.children:
u.generateEvents(result_events, last_recover_time,
end_time, True)
break
for [fail_time, recover_time, _bool] in self.failure_intervals:
if recovery_time < fail_time:
break
remove_flag = True
# combine the correlated failure with component failure
if fail_time < failure_time <= recover_time:
failure_time = fail_time
remove_flag = False
if fail_time < recovery_time <= recover_time:
recovery_time = recover_time
remove_flag = False
if remove_flag:
result_events.addEvent(
Event(Event.EventType.Failure, fail_time, self))
result_events.addEvent(
Event(Event.EventType.Recovered, recover_time, self))
self.failure_intervals.remove([fail_time, recover_time, _bool])
fail_event = Event(Event.EventType.Failure, failure_time, self)
result_events.addEvent(fail_event)
if self.fast_forward:
fail_event.ignore = True
for u in self.children:
u.generateEvents(result_events, last_recover_time,
failure_time, True)
current_time = recovery_time
fail_event.next_recovery_time = recovery_time
if current_time > end_time:
break
if self.fast_forward:
result_events.addEvent(
Event(Event.EventType.Recovered,
current_time,
self,
ignore=True))
else:
result_events.addEvent(
Event(Event.EventType.Recovered, current_time, self))
last_recover_time = current_time