+++ /dev/null
-# -*- coding: utf-8 -*-
-
-# Copyright 2018 Whitestack, LLC
-# *************************************************************
-
-# This file is part of OSM Monitoring module
-# All Rights Reserved to Whitestack, LLC
-
-# Licensed under the Apache License, Version 2.0 (the "License"); you may
-# not use this file except in compliance with the License. You may obtain
-# a copy of the License at
-
-# http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# License for the specific language governing permissions and limitations
-# under the License.
-
-# 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 peewee
-
-from osm_policy_module.common.common_db_client import CommonDbClient
-from osm_policy_module.common.lcm_client import LcmClient
-from osm_policy_module.common.message_bus_client import MessageBusClient
-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, DatabaseManager
-from osm_policy_module.core.exceptions import VdurNotFound
-from osm_policy_module.utils.vnfd import VnfdUtils
-
-log = logging.getLogger(__name__)
-
-ALLOWED_KAFKA_KEYS = ['instantiated', 'scaled', 'terminated', 'notify_alarm']
-
-
-class PolicyModuleAgent:
- def __init__(self, config: Config, loop=None):
- 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.database_manager = DatabaseManager(config)
- self.msg_bus = MessageBusClient(config)
-
- def run(self):
- self.loop.run_until_complete(self.start())
-
- async def start(self):
- topics = [
- "ns",
- "alarm_response"
- ]
- await self.msg_bus.aioread(topics, self._process_msg)
- log.critical("Exiting...")
-
- async def _process_msg(self, topic, key, msg):
- log.debug("_process_msg topic=%s key=%s msg=%s", topic, key, msg)
- log.info("Message arrived: %s", msg)
- try:
- if key in ALLOWED_KAFKA_KEYS:
-
- if key == 'instantiated':
- await self._handle_instantiated(msg)
-
- if key == 'scaled':
- await self._handle_scaled(msg)
-
- if key == 'terminated':
- await self._handle_terminated(msg)
-
- if key == 'notify_alarm':
- await self._handle_alarm_notification(msg)
- else:
- log.debug("Key %s is not in ALLOWED_KAFKA_KEYS", key)
- except peewee.PeeweeException:
- log.exception("Database error consuming message: ")
- raise
- except Exception:
- log.exception("Error consuming message: ")
-
- async def _handle_alarm_notification(self, content):
- log.debug("_handle_alarm_notification: %s", content)
- alarm_uuid = 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']
- nsr_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_uuid, metric_name, operation, threshold, vdu_name, vnf_member_index, nsr_id)
- try:
- alarm = self.database_manager.get_alarm(alarm_uuid)
- 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", nsr_id)
- await self.lcm_client.scale(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_uuid)
-
- async def _handle_instantiated(self, content):
- log.debug("_handle_instantiated: %s", content)
- nslcmop_id = content['nslcmop_id']
- nslcmop = self.db_client.get_nslcmop(nslcmop_id)
- if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED':
- nsr_id = nslcmop['nsInstanceId']
- log.info("Configuring scaling groups for network service with nsr_id: %s", nsr_id)
- await self._configure_scaling_groups(nsr_id)
- else:
- log.info(
- "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
- "Current state is %s. Skipping...",
- nslcmop['operationState'])
-
- async def _handle_scaled(self, content):
- log.debug("_handle_scaled: %s", content)
- nslcmop_id = content['nslcmop_id']
- nslcmop = self.db_client.get_nslcmop(nslcmop_id)
- if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED':
- nsr_id = nslcmop['nsInstanceId']
- log.info("Configuring scaling groups for network service with nsr_id: %s", nsr_id)
- await self._configure_scaling_groups(nsr_id)
- log.info("Checking for orphaned alarms to be deleted for network service with nsr_id: %s", nsr_id)
- await self._delete_orphaned_alarms(nsr_id)
- else:
- log.info(
- "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
- "Current state is %s. Skipping...",
- nslcmop['operationState'])
-
- async def _handle_terminated(self, content):
- log.debug("_handle_deleted: %s", content)
- nsr_id = content['nsr_id']
- if content['operationState'] == 'COMPLETED' or content['operationState'] == 'PARTIALLY_COMPLETED':
- log.info("Deleting scaling groups and alarms for network service with nsr_id: %s", nsr_id)
- await self._delete_scaling_groups(nsr_id)
- else:
- log.info(
- "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
- "Current state is %s. Skipping...",
- content['operationState'])
-
- async def _configure_scaling_groups(self, nsr_id: str):
- log.debug("_configure_scaling_groups: %s", nsr_id)
- alarms_created = []
- 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:
- 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(
- nsr_id=nsr_id,
- name=scaling_policy['name'],
- cooldown_time=scaling_policy['cooldown-time'],
- scaling_group=scaling_group_record
- )
- 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']:
- 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(
- nsr_id=nsr_id,
- name=scaling_criteria['name'],
- scaling_policy=scaling_policy_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)
-
- 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
- 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'])
- 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)
-
- 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
-
- async def _delete_scaling_groups(self, nsr_id: str):
- 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
-
- async def _delete_orphaned_alarms(self, nsr_id):
- 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:
- 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()
-
- except Exception as e:
- log.exception("Error deleting orphaned alarms:")
- tx.rollback()
- raise e
projects / osm / POL.git / blobdiff