from osm_policy_module.common.mon_client import MonClient
from osm_policy_module.core import database
from osm_policy_module.core.config import Config
-from osm_policy_module.core.database import ScalingGroup, ScalingAlarm, ScalingPolicy, ScalingCriteria
+from osm_policy_module.core.database import ScalingGroup, ScalingAlarm, ScalingPolicy, ScalingCriteria, \
+ ScalingAlarmRepository, ScalingGroupRepository, ScalingPolicyRepository, ScalingCriteriaRepository
from osm_policy_module.core.exceptions import VdurNotFound
from osm_policy_module.utils.vnfd import VnfdUtils
log = logging.getLogger(__name__)
-class Service:
+class AutoscalingService:
def __init__(self, config: Config, loop=None):
self.conf = config
self.lcm_client = LcmClient(config, loop=self.loop)
async def configure_scaling_groups(self, nsr_id: str):
- log.debug("_configure_scaling_groups: %s", nsr_id)
+ """
+ Configures scaling groups for a network service. Creates records in DB. Creates alarms in MON.
+ :param nsr_id: Network service record id
+ :return:
+ """
+ log.info("Configuring scaling groups for network service with nsr_id: %s",
+ nsr_id)
alarms_created = []
database.db.connect()
- with database.db.atomic() as tx:
- try:
- vnfrs = self.db_client.get_vnfrs(nsr_id)
- for vnfr in vnfrs:
- log.info("Processing vnfr: %s", vnfr)
- vnfd = self.db_client.get_vnfd(vnfr['vnfd-id'])
- log.info("Looking for vnfd %s", vnfr['vnfd-id'])
- if 'scaling-group-descriptor' not in vnfd:
- continue
- scaling_groups = vnfd['scaling-group-descriptor']
- vnf_monitoring_params = vnfd['monitoring-param']
- for scaling_group in scaling_groups:
- try:
- scaling_group_record = ScalingGroup.select().where(
- ScalingGroup.nsr_id == nsr_id,
- ScalingGroup.vnf_member_index == int(vnfr['member-vnf-index-ref']),
- ScalingGroup.name == scaling_group['name']
- ).get()
- log.info("Found existing scaling group record in DB...")
- except ScalingGroup.DoesNotExist:
- log.info("Creating scaling group record in DB...")
- scaling_group_record = ScalingGroup.create(
- nsr_id=nsr_id,
- vnf_member_index=vnfr['member-vnf-index-ref'],
- name=scaling_group['name'],
- content=json.dumps(scaling_group)
- )
- log.info(
- "Created scaling group record in DB : nsr_id=%s, vnf_member_index=%s, name=%s",
- scaling_group_record.nsr_id,
- scaling_group_record.vnf_member_index,
- scaling_group_record.name)
- for scaling_policy in scaling_group['scaling-policy']:
- if scaling_policy['scaling-type'] != 'automatic':
- continue
+ try:
+ with database.db.atomic() as tx:
+ try:
+ vnfrs = self.db_client.get_vnfrs(nsr_id)
+ for vnfr in vnfrs:
+ log.debug("Processing vnfr: %s", vnfr)
+ vnfd = self.db_client.get_vnfd(vnfr['vnfd-id'])
+ if 'scaling-group-descriptor' not in vnfd:
+ log.debug("No scaling group present in vnfd")
+ continue
+ scaling_groups = vnfd['scaling-group-descriptor']
+ vnf_monitoring_params = vnfd['monitoring-param']
+ for scaling_group in scaling_groups:
try:
- scaling_policy_record = ScalingPolicy.select().join(ScalingGroup).where(
- ScalingPolicy.name == scaling_policy['name'],
- ScalingGroup.id == scaling_group_record.id
- ).get()
- log.info("Found existing scaling policy record in DB...")
- except ScalingPolicy.DoesNotExist:
- log.info("Creating scaling policy record in DB...")
- scaling_policy_record = ScalingPolicy.create(
+ scaling_group_record = ScalingGroupRepository.get(
+ ScalingGroup.nsr_id == nsr_id,
+ ScalingGroup.vnf_member_index == vnfr['member-vnf-index-ref'],
+ ScalingGroup.name == scaling_group['name']
+ )
+ log.debug("Found existing scaling group record in DB...")
+ except ScalingGroup.DoesNotExist:
+ log.debug("Creating scaling group record in DB...")
+ scaling_group_record = ScalingGroupRepository.create(
nsr_id=nsr_id,
- name=scaling_policy['name'],
- cooldown_time=scaling_policy['cooldown-time'],
- scaling_group=scaling_group_record
+ vnf_member_index=vnfr['member-vnf-index-ref'],
+ name=scaling_group['name'],
+ content=json.dumps(scaling_group)
)
- log.info("Created scaling policy record in DB : name=%s, scaling_group.name=%s",
- scaling_policy_record.name,
- scaling_policy_record.scaling_group.name)
-
- for scaling_criteria in scaling_policy['scaling-criteria']:
+ log.debug(
+ "Created scaling group record in DB : nsr_id=%s, vnf_member_index=%s, name=%s",
+ scaling_group_record.nsr_id,
+ scaling_group_record.vnf_member_index,
+ scaling_group_record.name)
+ for scaling_policy in scaling_group['scaling-policy']:
+ if scaling_policy['scaling-type'] != 'automatic':
+ continue
try:
- scaling_criteria_record = ScalingCriteria.select().join(ScalingPolicy).where(
- ScalingPolicy.id == scaling_policy_record.id,
- ScalingCriteria.name == scaling_criteria['name']
- ).get()
- log.info("Found existing scaling criteria record in DB...")
- except ScalingCriteria.DoesNotExist:
- log.info("Creating scaling criteria record in DB...")
- scaling_criteria_record = ScalingCriteria.create(
+ scaling_policy_record = ScalingPolicyRepository.get(
+ ScalingPolicy.name == scaling_policy['name'],
+ ScalingGroup.id == scaling_group_record.id,
+ join_classes=[ScalingGroup]
+ )
+ log.debug("Found existing scaling policy record in DB...")
+ except ScalingPolicy.DoesNotExist:
+ log.debug("Creating scaling policy record in DB...")
+ scaling_policy_record = ScalingPolicyRepository.create(
nsr_id=nsr_id,
- name=scaling_criteria['name'],
- scaling_policy=scaling_policy_record
+ name=scaling_policy['name'],
+ cooldown_time=scaling_policy['cooldown-time'],
+ scaling_group=scaling_group_record,
)
- log.info(
- "Created scaling criteria record in DB : name=%s, scaling_policy.name=%s",
- scaling_criteria_record.name,
- scaling_criteria_record.scaling_policy.name)
+ if 'scale-in-operation-type' in scaling_policy:
+ scaling_policy_record.scale_in_operation = scaling_policy[
+ 'scale-in-operation-type']
+ if 'scale-out-operation-type' in scaling_policy:
+ scaling_policy_record.scale_out_operation = scaling_policy[
+ 'scale-out-operation-type']
+ if 'enabled' in scaling_policy:
+ scaling_policy_record.enabled = scaling_policy['enabled']
+ scaling_policy_record.save()
+ log.debug("Created scaling policy record in DB : name=%s, scaling_group.name=%s",
+ scaling_policy_record.name,
+ scaling_policy_record.scaling_group.name)
- vnf_monitoring_param = next(
- filter(
- lambda param: param['id'] == scaling_criteria[
- 'vnf-monitoring-param-ref'
- ],
- vnf_monitoring_params)
- )
- if 'vdu-monitoring-param' in vnf_monitoring_param:
- vdurs = list(
- filter(
- lambda vdur: vdur['vdu-id-ref'] == vnf_monitoring_param
- ['vdu-monitoring-param']
- ['vdu-ref'],
- vnfr['vdur']
+ for scaling_criteria in scaling_policy['scaling-criteria']:
+ try:
+ scaling_criteria_record = ScalingCriteriaRepository.get(
+ ScalingPolicy.id == scaling_policy_record.id,
+ ScalingCriteria.name == scaling_criteria['name'],
+ join_classes=[ScalingPolicy]
)
- )
- elif 'vdu-metric' in vnf_monitoring_param:
- vdurs = list(
- filter(
- lambda vdur: vdur['vdu-id-ref'] == vnf_monitoring_param
- ['vdu-metric']
- ['vdu-ref'],
- vnfr['vdur']
+ log.debug("Found existing scaling criteria record in DB...")
+ except ScalingCriteria.DoesNotExist:
+ log.debug("Creating scaling criteria record in DB...")
+ scaling_criteria_record = ScalingCriteriaRepository.create(
+ nsr_id=nsr_id,
+ name=scaling_criteria['name'],
+ scaling_policy=scaling_policy_record
)
- )
- elif 'vnf-metric' in vnf_monitoring_param:
- vdu = VnfdUtils.get_mgmt_vdu(vnfd)
- vdurs = list(
+ log.debug(
+ "Created scaling criteria record in DB : name=%s, scaling_policy.name=%s",
+ scaling_criteria_record.name,
+ scaling_criteria_record.scaling_policy.name)
+
+ vnf_monitoring_param = next(
filter(
- lambda vdur: vdur['vdu-id-ref'] == vdu['id'],
- vnfr['vdur']
- )
+ lambda param: param['id'] == scaling_criteria[
+ 'vnf-monitoring-param-ref'
+ ],
+ vnf_monitoring_params)
)
- else:
- log.warning(
- "Scaling criteria is referring to a vnf-monitoring-param that does not "
- "contain a reference to a vdu or vnf metric.")
- continue
- for vdur in vdurs:
- log.info("Creating alarm for vdur %s ", vdur)
- try:
- (ScalingAlarm.select()
- .join(ScalingCriteria)
- .join(ScalingPolicy)
- .join(ScalingGroup)
- .where(
- ScalingAlarm.vdu_name == vdur['name'],
- ScalingCriteria.name == scaling_criteria['name'],
- ScalingPolicy.name == scaling_policy['name'],
- ScalingGroup.nsr_id == nsr_id
- ).get())
- log.debug("vdu %s already has an alarm configured", vdur['name'])
+ if 'vdu-monitoring-param' in vnf_monitoring_param:
+ vdurs = list(
+ filter(
+ lambda vdur: vdur['vdu-id-ref'] == vnf_monitoring_param
+ ['vdu-monitoring-param']
+ ['vdu-ref'],
+ vnfr['vdur']
+ )
+ )
+ elif 'vdu-metric' in vnf_monitoring_param:
+ vdurs = list(
+ filter(
+ lambda vdur: vdur['vdu-id-ref'] == vnf_monitoring_param
+ ['vdu-metric']
+ ['vdu-ref'],
+ vnfr['vdur']
+ )
+ )
+ elif 'vnf-metric' in vnf_monitoring_param:
+ vdu = VnfdUtils.get_mgmt_vdu(vnfd)
+ vdurs = list(
+ filter(
+ lambda vdur: vdur['vdu-id-ref'] == vdu['id'],
+ vnfr['vdur']
+ )
+ )
+ else:
+ log.warning(
+ "Scaling criteria is referring to a vnf-monitoring-param that does not "
+ "contain a reference to a vdu or vnf metric.")
continue
- except ScalingAlarm.DoesNotExist:
- pass
- alarm_uuid = await self.mon_client.create_alarm(
- metric_name=vnf_monitoring_param['id'],
- ns_id=nsr_id,
- vdu_name=vdur['name'],
- vnf_member_index=vnfr['member-vnf-index-ref'],
- threshold=scaling_criteria['scale-in-threshold'],
- operation=scaling_criteria['scale-in-relational-operation'],
- statistic=vnf_monitoring_param['aggregation-type']
- )
- alarm = ScalingAlarm.create(
- alarm_uuid=alarm_uuid,
- action='scale_in',
- vnf_member_index=int(vnfr['member-vnf-index-ref']),
- vdu_name=vdur['name'],
- scaling_criteria=scaling_criteria_record
- )
- alarms_created.append(alarm)
- alarm_uuid = await self.mon_client.create_alarm(
- metric_name=vnf_monitoring_param['id'],
- ns_id=nsr_id,
- vdu_name=vdur['name'],
- vnf_member_index=vnfr['member-vnf-index-ref'],
- threshold=scaling_criteria['scale-out-threshold'],
- operation=scaling_criteria['scale-out-relational-operation'],
- statistic=vnf_monitoring_param['aggregation-type']
- )
- alarm = ScalingAlarm.create(
- alarm_uuid=alarm_uuid,
- action='scale_out',
- vnf_member_index=int(vnfr['member-vnf-index-ref']),
- vdu_name=vdur['name'],
- scaling_criteria=scaling_criteria_record
- )
- alarms_created.append(alarm)
+ for vdur in vdurs:
+ log.debug("Creating alarm for vdur %s ", vdur)
+ try:
+ ScalingAlarmRepository.get(ScalingAlarm.vdu_name == vdur['name'],
+ ScalingCriteria.name == scaling_criteria['name'],
+ ScalingPolicy.name == scaling_policy['name'],
+ ScalingGroup.nsr_id == nsr_id,
+ join_classes=[ScalingCriteria,
+ ScalingPolicy,
+ ScalingGroup])
+ log.debug("vdu %s already has an alarm configured", vdur['name'])
+ continue
+ except ScalingAlarm.DoesNotExist:
+ pass
+ alarm_uuid = await self.mon_client.create_alarm(
+ metric_name=vnf_monitoring_param['id'],
+ ns_id=nsr_id,
+ vdu_name=vdur['name'],
+ vnf_member_index=vnfr['member-vnf-index-ref'],
+ threshold=scaling_criteria['scale-in-threshold'],
+ operation=scaling_criteria['scale-in-relational-operation'],
+ statistic=vnf_monitoring_param['aggregation-type']
+ )
+ alarm = ScalingAlarmRepository.create(
+ alarm_uuid=alarm_uuid,
+ action='scale_in',
+ vnf_member_index=vnfr['member-vnf-index-ref'],
+ vdu_name=vdur['name'],
+ scaling_criteria=scaling_criteria_record
+ )
+ alarms_created.append(alarm)
+ alarm_uuid = await self.mon_client.create_alarm(
+ metric_name=vnf_monitoring_param['id'],
+ ns_id=nsr_id,
+ vdu_name=vdur['name'],
+ vnf_member_index=vnfr['member-vnf-index-ref'],
+ threshold=scaling_criteria['scale-out-threshold'],
+ operation=scaling_criteria['scale-out-relational-operation'],
+ statistic=vnf_monitoring_param['aggregation-type']
+ )
+ alarm = ScalingAlarmRepository.create(
+ alarm_uuid=alarm_uuid,
+ action='scale_out',
+ vnf_member_index=vnfr['member-vnf-index-ref'],
+ vdu_name=vdur['name'],
+ scaling_criteria=scaling_criteria_record
+ )
+ alarms_created.append(alarm)
- except Exception as e:
- log.exception("Error configuring scaling groups:")
- tx.rollback()
- if len(alarms_created) > 0:
- log.info("Cleaning alarm resources in MON")
- for alarm in alarms_created:
- await self.mon_client.delete_alarm(alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
- alarm.vnf_member_index,
- alarm.vdu_name,
- alarm.alarm_uuid)
- raise e
- database.db.close()
+ except Exception as e:
+ log.exception("Error configuring scaling groups:")
+ tx.rollback()
+ if len(alarms_created) > 0:
+ log.info("Cleaning alarm resources in MON")
+ for alarm in alarms_created:
+ await self.mon_client.delete_alarm(
+ alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
+ alarm.vnf_member_index,
+ alarm.vdu_name,
+ alarm.alarm_uuid)
+ raise e
+ finally:
+ database.db.close()
async def delete_scaling_groups(self, nsr_id: str):
+ log.debug("Deleting scaling groups for network service %s", nsr_id)
database.db.connect()
- with database.db.atomic() as tx:
- try:
- for scaling_group in ScalingGroup.select().where(ScalingGroup.nsr_id == nsr_id):
- for scaling_policy in scaling_group.scaling_policies:
- for scaling_criteria in scaling_policy.scaling_criterias:
- for alarm in scaling_criteria.scaling_alarms:
- try:
- await self.mon_client.delete_alarm(
- alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
- alarm.vnf_member_index,
- alarm.vdu_name,
- alarm.alarm_uuid)
- except ValueError:
- log.exception("Error deleting alarm in MON %s", alarm.alarm_uuid)
- alarm.delete_instance()
- scaling_criteria.delete_instance()
- scaling_policy.delete_instance()
- scaling_group.delete_instance()
-
- except Exception as e:
- log.exception("Error deleting scaling groups and alarms:")
- tx.rollback()
- raise e
- database.db.close()
-
- async def delete_orphaned_alarms(self, nsr_id):
- database.db.connect()
- with database.db.atomic() as tx:
- try:
- for scaling_group in ScalingGroup.select().where(ScalingGroup.nsr_id == nsr_id):
- for scaling_policy in scaling_group.scaling_policies:
- for scaling_criteria in scaling_policy.scaling_criterias:
- for alarm in scaling_criteria.scaling_alarms:
- try:
- self.db_client.get_vdur(nsr_id, alarm.vnf_member_index, alarm.vdu_name)
- except VdurNotFound:
- log.info("Deleting orphaned alarm %s", alarm.alarm_uuid)
+ try:
+ with database.db.atomic() as tx:
+ try:
+ for scaling_group in ScalingGroupRepository.list(ScalingGroup.nsr_id == nsr_id):
+ for scaling_policy in scaling_group.scaling_policies:
+ for scaling_criteria in scaling_policy.scaling_criterias:
+ for alarm in scaling_criteria.scaling_alarms:
try:
await self.mon_client.delete_alarm(
alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
except ValueError:
log.exception("Error deleting alarm in MON %s", alarm.alarm_uuid)
alarm.delete_instance()
+ scaling_criteria.delete_instance()
+ scaling_policy.delete_instance()
+ scaling_group.delete_instance()
- except Exception as e:
- log.exception("Error deleting orphaned alarms:")
- tx.rollback()
- raise e
- database.db.close()
+ except Exception as e:
+ log.exception("Error deleting scaling groups and alarms:")
+ tx.rollback()
+ raise e
+ finally:
+ database.db.close()
- async def scale(self, alarm):
+ async def delete_orphaned_alarms(self, nsr_id):
+ log.info("Deleting orphaned scaling alarms for network service %s", nsr_id)
database.db.connect()
- with database.db.atomic():
- delta = datetime.datetime.now() - alarm.scaling_criteria.scaling_policy.last_scale
- if delta.total_seconds() > alarm.scaling_criteria.scaling_policy.cooldown_time:
- log.info("Sending scaling action message for ns: %s",
- alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id)
- await 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()
- else:
- log.info("Time between last scale and now is less than cooldown time. Skipping.")
- database.db.close()
+ try:
+ with database.db.atomic() as tx:
+ try:
+ for scaling_group in ScalingGroupRepository.list(ScalingGroup.nsr_id == nsr_id):
+ for scaling_policy in scaling_group.scaling_policies:
+ for scaling_criteria in scaling_policy.scaling_criterias:
+ for alarm in scaling_criteria.scaling_alarms:
+ try:
+ self.db_client.get_vdur(nsr_id, alarm.vnf_member_index, alarm.vdu_name)
+ except VdurNotFound:
+ log.debug("Deleting orphaned scaling alarm %s", alarm.alarm_uuid)
+ try:
+ await self.mon_client.delete_alarm(
+ alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
+ alarm.vnf_member_index,
+ alarm.vdu_name,
+ alarm.alarm_uuid)
+ except ValueError:
+ log.exception("Error deleting alarm in MON %s", alarm.alarm_uuid)
+ alarm.delete_instance()
- def get_alarm(self, alarm_uuid: str):
- database.db.connect()
- with database.db.atomic():
- alarm = ScalingAlarm.select().where(ScalingAlarm.alarm_uuid == alarm_uuid).get()
- database.db.close()
- return alarm
+ except Exception as e:
+ log.exception("Error deleting orphaned alarms:")
+ tx.rollback()
+ raise e
+ finally:
+ database.db.close()
def get_nslcmop(self, nslcmop_id):
return self.db_client.get_nslcmop(nslcmop_id)
+
+ async def handle_alarm(self, alarm_uuid: str, status: str):
+ await self.update_alarm_status(alarm_uuid, status)
+ await self.evaluate_policy(alarm_uuid)
+
+ async def update_alarm_status(self, alarm_uuid: str, status: str):
+ database.db.connect()
+ try:
+ with database.db.atomic():
+ alarm = ScalingAlarmRepository.get(ScalingAlarm.alarm_uuid == alarm_uuid)
+ alarm.last_status = status
+ alarm.save()
+ except ScalingAlarm.DoesNotExist:
+ log.debug("There is no autoscaling action configured for alarm %s.", alarm_uuid)
+ finally:
+ database.db.close()
+
+ async def evaluate_policy(self, alarm_uuid):
+ database.db.connect()
+ try:
+ with database.db.atomic():
+ alarm = ScalingAlarmRepository.get(ScalingAlarm.alarm_uuid == alarm_uuid)
+ vnf_member_index = alarm.vnf_member_index
+ action = alarm.action
+ scaling_policy = alarm.scaling_criteria.scaling_policy
+ if not scaling_policy.enabled:
+ return
+ if action == 'scale_in':
+ operation = scaling_policy.scale_in_operation
+ elif action == 'scale_out':
+ operation = scaling_policy.scale_out_operation
+ else:
+ raise Exception('Unknown alarm action {}'.format(alarm.action))
+ alarms = ScalingAlarmRepository.list(ScalingAlarm.scaling_criteria == alarm.scaling_criteria,
+ ScalingAlarm.action == alarm.action,
+ ScalingAlarm.vnf_member_index == vnf_member_index,
+ ScalingAlarm.vdu_name == alarm.vdu_name)
+ statuses = []
+ for alarm in alarms:
+ statuses.append(alarm.last_status)
+ if (operation == 'AND' and set(statuses) == {'alarm'}) or (operation == 'OR' and 'alarm' in statuses):
+ delta = datetime.datetime.now() - scaling_policy.last_scale
+ if delta.total_seconds() > scaling_policy.cooldown_time:
+ log.info("Sending %s action message for ns: %s",
+ alarm.action,
+ scaling_policy.scaling_group.nsr_id)
+ await self.lcm_client.scale(scaling_policy.scaling_group.nsr_id,
+ scaling_policy.scaling_group.name,
+ vnf_member_index,
+ action)
+ scaling_policy.last_scale = datetime.datetime.now()
+ scaling_policy.save()
+
+ except ScalingAlarm.DoesNotExist:
+ log.debug("There is no autoscaling action configured for alarm %s.", alarm_uuid)
+ finally:
+ database.db.close()
projects / osm / POL.git / blobdiff