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, \
- ScalingAlarmRepository, ScalingGroupRepository, ScalingPolicyRepository, ScalingCriteriaRepository
+from osm_policy_module.core.database import (
+ ScalingGroup,
+ ScalingAlarm,
+ ScalingPolicy,
+ ScalingCriteria,
+ ScalingAlarmRepository,
+ ScalingGroupRepository,
+ ScalingPolicyRepository,
+ ScalingCriteriaRepository,
+)
from osm_policy_module.core.exceptions import VdurNotFound
log = logging.getLogger(__name__)
class AutoscalingService:
-
def __init__(self, config: Config, loop=None):
self.conf = config
if not loop:
:param nsr_id: Network service record id
:return:
"""
- log.info("Configuring scaling groups for network service with nsr_id: %s",
- nsr_id)
+ log.info(
+ "Configuring scaling groups for network service with nsr_id: %s", nsr_id
+ )
alarms_created = []
database.db.connect()
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'])
+ vnfd = self.db_client.get_vnfd(vnfr["vnfd-id"])
# TODO: Change for multiple DF support
- df = vnfd.get('df', [{}])[0]
- if 'scaling-aspect' not in df:
+ df = vnfd.get("df", [{}])[0]
+ if "scaling-aspect" not in df:
log.debug("No scaling aspect present in vnfd")
continue
# TODO: Change for multiple instantiation levels support
- scaling_aspects = df['scaling-aspect']
- all_vnfd_monitoring_params = self._get_all_vnfd_monitoring_params(vnfd)
+ scaling_aspects = df["scaling-aspect"]
+ all_vnfd_monitoring_params = (
+ self._get_all_vnfd_monitoring_params(vnfd)
+ )
for scaling_aspect in scaling_aspects:
- scaling_group_record = self._get_or_create_scaling_group(nsr_id,
- vnfr['member-vnf-index-ref'],
- scaling_aspect)
- vdurs = self._get_monitored_vdurs(scaling_aspect, vnfr['vdur'])
- for scaling_policy in scaling_aspect.get('scaling-policy', ()):
- if scaling_policy['scaling-type'] != 'automatic':
+ scaling_group_record = self._get_or_create_scaling_group(
+ nsr_id, vnfr["member-vnf-index-ref"], scaling_aspect
+ )
+ vdurs = self._get_monitored_vdurs(
+ scaling_aspect, vnfr["vdur"]
+ )
+ for scaling_policy in scaling_aspect.get(
+ "scaling-policy", ()
+ ):
+ if scaling_policy["scaling-type"] != "automatic":
continue
- scaling_policy_record = self._get_or_create_scaling_policy(nsr_id,
- scaling_policy,
- scaling_group_record)
-
- for scaling_criteria in scaling_policy['scaling-criteria']:
- scaling_criteria_record = self._get_or_create_scaling_criteria(
- nsr_id,
- scaling_criteria,
- scaling_policy_record
+ scaling_policy_record = (
+ self._get_or_create_scaling_policy(
+ nsr_id, scaling_policy, scaling_group_record
+ )
+ )
+
+ for scaling_criteria in scaling_policy[
+ "scaling-criteria"
+ ]:
+ scaling_criteria_record = (
+ self._get_or_create_scaling_criteria(
+ nsr_id,
+ scaling_criteria,
+ scaling_policy_record,
+ )
)
- monitoring_param_ref = scaling_criteria.get('vnf-monitoring-param-ref')
- vnf_monitoring_param = all_vnfd_monitoring_params[monitoring_param_ref]
+ monitoring_param_ref = scaling_criteria.get(
+ "vnf-monitoring-param-ref"
+ )
+ vnf_monitoring_param = all_vnfd_monitoring_params[
+ monitoring_param_ref
+ ]
for vdur in vdurs:
- vdu_id = vdur['vdu-id-ref']
+ vdu_id = vdur["vdu-id-ref"]
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'])
+ 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
- metric_name = self._get_metric_name(vnf_monitoring_param)
+ metric_name = self._get_metric_name(
+ vnf_monitoring_param
+ )
db_nsr = self.db_client.get_nsr(nsr_id)
nb_scale_op = 0
if db_nsr["_admin"].get("scaling-group"):
- db_nsr_admin = db_nsr["_admin"]["scaling-group"]
- for admin_scale_index, admin_scale_info in enumerate(db_nsr_admin):
- if admin_scale_info["name"] == scaling_aspect["name"]:
- nb_scale_op = admin_scale_info.get("nb-scale-op", 0)
+ db_nsr_admin = db_nsr["_admin"][
+ "scaling-group"
+ ]
+ for (
+ admin_scale_index,
+ admin_scale_info,
+ ) in enumerate(db_nsr_admin):
+ if (
+ admin_scale_info["name"]
+ == scaling_aspect["name"]
+ ):
+ nb_scale_op = admin_scale_info.get(
+ "nb-scale-op", 0
+ )
break
min_instance_count = 1
- for vdu_profile in df.get('vdu-profile', ()):
- if vdu_profile.get('id') == vdu_id:
- min_instance_count = int(vdu_profile.get('min-number-of-instances ', 1))
+ for vdu_profile in df.get("vdu-profile", ()):
+ if vdu_profile.get("id") == vdu_id:
+ min_instance_count = int(
+ vdu_profile.get(
+ "min-number-of-instances ", 1
+ )
+ )
break
if nb_scale_op >= min_instance_count:
- alarm_uuid = await self.mon_client.create_alarm(
- metric_name=metric_name,
- 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']
+ alarm_uuid = (
+ await self.mon_client.create_alarm(
+ metric_name=metric_name,
+ 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"
+ ],
+ )
)
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
+ 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=metric_name,
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']
+ 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"
+ ],
)
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
+ action="scale_out",
+ vnf_member_index=vnfr[
+ "member-vnf-index-ref"
+ ],
+ vdu_name=vdur["name"],
+ scaling_criteria=scaling_criteria_record,
)
alarms_created.append(alarm)
alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
alarm.vnf_member_index,
alarm.vdu_name,
- alarm.alarm_uuid)
+ alarm.alarm_uuid,
+ )
raise e
finally:
database.db.close()
try:
with database.db.atomic() as tx:
try:
- for scaling_group in ScalingGroupRepository.list(ScalingGroup.nsr_id == nsr_id):
+ 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:
alarm.scaling_criteria.scaling_policy.scaling_group.nsr_id,
alarm.vnf_member_index,
alarm.vdu_name,
- alarm.alarm_uuid)
+ alarm.alarm_uuid,
+ )
except ValueError:
- log.exception("Error deleting alarm in MON %s", alarm.alarm_uuid)
+ log.exception(
+ "Error deleting alarm in MON %s",
+ alarm.alarm_uuid,
+ )
alarm.delete_instance()
scaling_criteria.delete_instance()
scaling_policy.delete_instance()
try:
with database.db.atomic() as tx:
try:
- for scaling_group in ScalingGroupRepository.list(ScalingGroup.nsr_id == nsr_id):
+ 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)
+ 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)
+ 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)
+ alarm.alarm_uuid,
+ )
except ValueError:
- log.exception("Error deleting alarm in MON %s", alarm.alarm_uuid)
+ log.exception(
+ "Error deleting alarm in MON %s",
+ alarm.alarm_uuid,
+ )
alarm.delete_instance()
except Exception as e:
database.db.connect()
try:
with database.db.atomic():
- alarm = ScalingAlarmRepository.get(ScalingAlarm.alarm_uuid == alarm_uuid)
+ 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)
+ log.debug(
+ "There is no autoscaling action configured for alarm %s.", alarm_uuid
+ )
finally:
database.db.close()
database.db.connect()
try:
with database.db.atomic():
- alarm = ScalingAlarmRepository.get(ScalingAlarm.alarm_uuid == alarm_uuid)
+ 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':
+ if action == "scale_in":
operation = scaling_policy.scale_in_operation
- elif action == 'scale_out':
+ 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)
+ 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):
+ 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)
+ 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)
+ log.debug(
+ "There is no autoscaling action configured for alarm %s.", alarm_uuid
+ )
finally:
database.db.close()
return all_monitoring_params
- def _get_or_create_scaling_group(self, nsr_id: str, vnf_member_index: str, scaling_aspect: dict):
+ def _get_or_create_scaling_group(
+ self, nsr_id: str, vnf_member_index: str, scaling_aspect: dict
+ ):
try:
scaling_group_record = ScalingGroupRepository.get(
ScalingGroup.nsr_id == nsr_id,
ScalingGroup.vnf_member_index == vnf_member_index,
- ScalingGroup.name == scaling_aspect['name']
+ ScalingGroup.name == scaling_aspect["name"],
)
log.debug("Found existing scaling group record in DB...")
except ScalingGroup.DoesNotExist:
scaling_group_record = ScalingGroupRepository.create(
nsr_id=nsr_id,
vnf_member_index=vnf_member_index,
- name=scaling_aspect['name'],
- content=json.dumps(scaling_aspect)
+ name=scaling_aspect["name"],
+ content=json.dumps(scaling_aspect),
)
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)
+ scaling_group_record.name,
+ )
return scaling_group_record
- def _get_or_create_scaling_policy(self, nsr_id: str, scaling_policy: dict, scaling_group_record: ScalingGroup):
+ def _get_or_create_scaling_policy(
+ self, nsr_id: str, scaling_policy: dict, scaling_group_record: ScalingGroup
+ ):
try:
scaling_policy_record = ScalingPolicyRepository.get(
- ScalingPolicy.name == scaling_policy['name'],
+ ScalingPolicy.name == scaling_policy["name"],
ScalingGroup.id == scaling_group_record.id,
- join_classes=[ScalingGroup]
+ 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_policy['name'],
- cooldown_time=scaling_policy['cooldown-time'],
+ name=scaling_policy["name"],
+ cooldown_time=scaling_policy["cooldown-time"],
scaling_group=scaling_group_record,
)
- 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']
+ 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)
+ log.debug(
+ "Created scaling policy record in DB : name=%s, scaling_group.name=%s",
+ scaling_policy_record.name,
+ scaling_policy_record.scaling_group.name,
+ )
return scaling_policy_record
- def _get_or_create_scaling_criteria(self, nsr_id: str, scaling_criteria: dict,
- scaling_policy_record: ScalingPolicy):
+ def _get_or_create_scaling_criteria(
+ self, nsr_id: str, scaling_criteria: dict, scaling_policy_record: ScalingPolicy
+ ):
try:
scaling_criteria_record = ScalingCriteriaRepository.get(
ScalingPolicy.id == scaling_policy_record.id,
- ScalingCriteria.name == scaling_criteria['name'],
- join_classes=[ScalingPolicy]
+ ScalingCriteria.name == scaling_criteria["name"],
+ join_classes=[ScalingPolicy],
)
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
+ name=scaling_criteria["name"],
+ scaling_policy=scaling_policy_record,
)
log.debug(
"Created scaling criteria record in DB : name=%s, scaling_policy.name=%s",
scaling_criteria_record.name,
- scaling_criteria_record.scaling_policy.name)
+ scaling_criteria_record.scaling_policy.name,
+ )
return scaling_criteria_record
def _get_monitored_vdurs(self, scaling_aspect: dict, vdurs):
all_monitored_vdus = set()
- for delta in scaling_aspect.get('aspect-delta-details', {}).get('deltas', ()):
- for vdu_delta in delta.get('vdu-delta', ()):
- all_monitored_vdus.add(vdu_delta.get('id'))
+ for delta in scaling_aspect.get("aspect-delta-details", {}).get("deltas", ()):
+ for vdu_delta in delta.get("vdu-delta", ()):
+ all_monitored_vdus.add(vdu_delta.get("id"))
- monitored_vdurs = list(filter(lambda vdur: vdur['vdu-id-ref'] in all_monitored_vdus, vdurs))
+ monitored_vdurs = list(
+ filter(lambda vdur: vdur["vdu-id-ref"] in all_monitored_vdus, vdurs)
+ )
if not monitored_vdurs:
log.warning(
"Scaling criteria is referring to a vnf-monitoring-param that does not "
- "contain a reference to a vdu or vnf metric.")
+ "contain a reference to a vdu or vnf metric."
+ )
return monitored_vdurs
def _get_metric_name(self, vnf_monitoring_param: dict):
- if 'performance-metric' in vnf_monitoring_param:
- return vnf_monitoring_param['performance-metric']
- raise ValueError('No metric name found for vnf_monitoring_param %s' % vnf_monitoring_param['id'])
+ if "performance-metric" in vnf_monitoring_param:
+ return vnf_monitoring_param["performance-metric"]
+ raise ValueError(
+ "No metric name found for vnf_monitoring_param %s"
+ % vnf_monitoring_param["id"]
+ )
projects / osm / POL.git / blobdiff