def handle(self):
event = self.event
alert = AlertGenerator(event)
interface = event.get_subject()
is_unresolved = unresolved.refers_to_unresolved_alert(event)
if event.state == event.STATE_START:
alert.alert_type = 'linkDegraded'
if is_unresolved:
return self._handle_duplicate(alert, is_unresolved)
if not interface.is_degraded():
return self._ignore("Got aggregateLinkState start event, but "
"the interface is not currently degraded.")
elif event.state == event.STATE_END:
alert.alert_type = 'linkRestored'
if not is_unresolved:
return self._ignore("Got aggregateLinkState end event, but "
"there is no currently active alert to "
"resolve.")
if interface.is_degraded():
return self._ignore("Got aggregateLinkState end event, but the "
"interface still appears to be degraded.")
if self._box_is_on_maintenance():
alert.post_alert_history()
else:
alert.post()
event.delete()
def _handle_end(self):
is_unresolved = unresolved.refers_to_unresolved_alert(self.event)
waiting_plugin = self._get_waiting()
if is_unresolved or waiting_plugin:
self._logger.info("%s is back up", self.get_target())
self._set_internal_state_up()
if is_unresolved:
alert = self._get_up_alert()
if self._box_is_on_maintenance():
alert.post_alert_history()
else:
alert.post()
if waiting_plugin:
self._logger.info("ignoring transient down state for %s",
self.get_target())
waiting_plugin.deschedule()
elif self._is_internally_down():
self._logger.info("no unresolved %s for %s, but its internal state "
"was down; correcting internal state",
self.event.event_type, self.get_target())
self._set_internal_state_up()
else:
self._logger.info("no unresolved %s for %s, ignoring end event",
self.event.event_type, self.get_target())
self.event.delete()
def _handle_end(self):
is_unresolved = unresolved.refers_to_unresolved_alert(self.event)
waiting_plugin = self._get_waiting()
if is_unresolved or waiting_plugin:
self._logger.info("%s is back up", self.get_target())
self._set_internal_state_up()
if is_unresolved:
alert = self._get_up_alert()
if self._box_is_on_maintenance():
alert.post_alert_history()
else:
alert.post()
if waiting_plugin:
self._logger.info("ignoring transient down state for %s",
self.get_target())
waiting_plugin.deschedule()
elif self._is_internally_down():
self._logger.info(
"no unresolved %s for %s, but its internal state "
"was down; correcting internal state", self.event.event_type,
self.get_target())
self._set_internal_state_up()
else:
self._logger.info("no unresolved %s for %s, ignoring end event",
self.event.event_type, self.get_target())
self.event.delete()
def _is_duplicate(self):
"""Returns True if this appears to be a duplicate boxDown event"""
return (unresolved.refers_to_unresolved_alert(self.event)
or self._get_waiting())
def _is_duplicate(self):
"""Returns True if this appears to be a duplicate boxDown event"""
return (unresolved.refers_to_unresolved_alert(self.event)
or self._get_waiting())
