X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=osm_policy_module%2Fautoscaling%2Fservice.py;h=5869785d74975b1dc32c8e79fa695aac2eac997b;hb=0f6b1c44ccb844079e0359c8bcda880902bae8b3;hp=8bb17e48dc4b6b4a71f54c4ac3c46077f7085736;hpb=87c4af90c63a6b53f92fd84f20c2a29187db5765;p=osm%2FPOL.git diff --git a/osm_policy_module/autoscaling/service.py b/osm_policy_module/autoscaling/service.py index 8bb17e4..5869785 100644 --- a/osm_policy_module/autoscaling/service.py +++ b/osm_policy_module/autoscaling/service.py @@ -1,4 +1,5 @@ # -*- coding: utf-8 -*- +# pylint: disable=no-member # Copyright 2018 Whitestack, LLC # ************************************************************* @@ -21,213 +22,214 @@ # For those usages not covered by the Apache License, Version 2.0 please # contact: bdiaz@whitestack.com or glavado@whitestack.com ## -import asyncio import datetime import json import logging +import operator +import functools from osm_policy_module.common.common_db_client import CommonDbClient from osm_policy_module.common.lcm_client import LcmClient 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 -from osm_policy_module.utils.vnfd import VnfdUtils log = logging.getLogger(__name__) class AutoscalingService: - - def __init__(self, config: Config, loop=None): + def __init__(self, config: Config): self.conf = config - if not loop: - loop = asyncio.get_event_loop() - self.loop = loop self.db_client = CommonDbClient(config) - self.mon_client = MonClient(config, loop=self.loop) - self.lcm_client = LcmClient(config, loop=self.loop) + self.mon_client = MonClient(config) + self.lcm_client = LcmClient(config) - async def configure_scaling_groups(self, nsr_id: str): + async def configure_scaling_groups(self, nsr_id: str, vnf_member_index=None): """ 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) + log.info( + "Configuring scaling groups for network service with nsr_id: %s", nsr_id + ) alarms_created = [] database.db.connect() try: with database.db.atomic() as tx: try: - vnfrs = self.db_client.get_vnfrs(nsr_id) + if vnf_member_index is None: + vnfrs = self.db_client.get_vnfrs(nsr_id) + else: + vnfrs = [] + vnfr = self.db_client.get_vnfr(nsr_id, vnf_member_index) + vnfrs.append(vnfr) + # 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") + 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: + log.debug("No scaling aspect present 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 = 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, - vnf_member_index=vnfr['member-vnf-index-ref'], - name=scaling_group['name'], - content=json.dumps(scaling_group) - ) - 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': + # TODO: Change for multiple instantiation levels support + 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": continue - try: - 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_policy['name'], - cooldown_time=scaling_policy['cooldown-time'], - scaling_group=scaling_group_record, + scaling_policy_record = ( + self._get_or_create_scaling_policy( + nsr_id, scaling_policy, 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'] - 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) - - 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] - ) - 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 + ) + + for scaling_criteria in scaling_policy[ + "scaling-criteria" + ]: + scaling_criteria_record = ( + self._get_or_create_scaling_criteria( + nsr_id, + scaling_criteria, + 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) - - 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'] - ) - ) - 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 + 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"] 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 - 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'] + metric_name = self._get_metric_name( + vnf_monitoring_param ) - 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) + + 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 + ) + 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 + ) + ) + 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" + ], + action="scale_in", + ) + ) + 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'], + 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'], - statistic=vnf_monitoring_param['aggregation-type'] + 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" + ], + action="scale_out", ) 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) @@ -241,18 +243,27 @@ class AutoscalingService: 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() - async def delete_scaling_groups(self, nsr_id: str): + async def delete_scaling_groups(self, nsr_id: str, vnf_member_index=None): log.debug("Deleting scaling groups for network service %s", nsr_id) database.db.connect() try: with database.db.atomic() as tx: try: - for scaling_group in ScalingGroupRepository.list(ScalingGroup.nsr_id == nsr_id): + if vnf_member_index is None: + scale_conditions = ScalingGroup.nsr_id == nsr_id + else: + query_list = [ + ScalingGroup.nsr_id == nsr_id, + ScalingGroup.vnf_member_index == vnf_member_index, + ] + scale_conditions = functools.reduce(operator.and_, query_list) + for scaling_group in ScalingGroupRepository.list(scale_conditions): for scaling_policy in scaling_group.scaling_policies: for scaling_criteria in scaling_policy.scaling_criterias: for alarm in scaling_criteria.scaling_alarms: @@ -261,9 +272,13 @@ class AutoscalingService: 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() @@ -282,22 +297,35 @@ class AutoscalingService: 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: @@ -307,9 +335,6 @@ class AutoscalingService: 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) @@ -318,51 +343,195 @@ class AutoscalingService: 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() 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() + if self.conf.get("autoscale", "enabled") == "True": + 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) + log.debug( + "There is no autoscaling action configured for alarm %s.", alarm_uuid + ) finally: database.db.close() + + def _get_all_vnfd_monitoring_params(self, vnfd): + all_monitoring_params = {} + for ivld in vnfd.get("int-virtual-link-desc", ()): + for mp in ivld.get("monitoring-parameters", ()): + all_monitoring_params[mp.get("id")] = mp + + for vdu in vnfd.get("vdu", ()): + for mp in vdu.get("monitoring-parameter", ()): + all_monitoring_params[mp.get("id")] = mp + + for df in vnfd.get("df", ()): + for mp in df.get("monitoring-parameter", ()): + all_monitoring_params[mp.get("id")] = mp + + return all_monitoring_params + + 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"], + ) + 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, + vnf_member_index=vnf_member_index, + 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, + ) + return scaling_group_record + + 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"], + 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_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"] + 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, + ) + return scaling_policy_record + + 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], + ) + 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, + ) + log.debug( + "Created scaling criteria record in DB : name=%s, scaling_policy.name=%s", + scaling_criteria_record.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")) + + 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." + ) + 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"] + )