+ def _handle_alarm_notification(self, content):
+ log.debug("_handle_alarm_notification: %s", content)
+ alarm_id = content['notify_details']['alarm_uuid']
+ metric_name = content['notify_details']['metric_name']
+ operation = content['notify_details']['operation']
+ threshold = content['notify_details']['threshold_value']
+ vdu_name = content['notify_details']['vdu_name']
+ vnf_member_index = content['notify_details']['vnf_member_index']
+ ns_id = content['notify_details']['ns_id']
+ log.info(
+ "Received alarm notification for alarm %s, \
+ metric %s, \
+ operation %s, \
+ threshold %s, \
+ vdu_name %s, \
+ vnf_member_index %s, \
+ ns_id %s ",
+ alarm_id, metric_name, operation, threshold, vdu_name, vnf_member_index, ns_id)
+ try:
+ alarm = ScalingAlarm.select().where(ScalingAlarm.alarm_id == alarm_id).get()
+ delta = datetime.datetime.now() - alarm.scaling_criteria.scaling_policy.last_scale
+ log.debug("last_scale: %s", alarm.scaling_criteria.scaling_policy.last_scale)
+ log.debug("now: %s", datetime.datetime.now())
+ log.debug("delta: %s", delta)
+ if delta.total_seconds() < alarm.scaling_criteria.scaling_policy.cooldown_time:
+ log.info("Time between last scale and now is less than cooldown time. Skipping.")
+ return
+ log.info("Sending scaling action message for ns: %s", alarm_id)
+ self.lcm_client.scale(alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
+ alarm.scaling_criteria.scaling_policy.scaling_group.name,
+ alarm.vnf_member_index,
+ alarm.action)
+ alarm.scaling_criteria.scaling_policy.last_scale = datetime.datetime.now()
+ alarm.scaling_criteria.scaling_policy.save()
+ except ScalingAlarm.DoesNotExist:
+ log.info("There is no action configured for alarm %s.", alarm_id)