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# -*- coding: utf-8 -*- |
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# pylint: disable=no-member |
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# Copyright 2018 Whitestack, LLC |
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# ************************************************************* |
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# This file is part of OSM Monitoring module |
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# All Rights Reserved to Whitestack, LLC |
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# Licensed under the Apache License, Version 2.0 (the "License"); you may |
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# not use this file except in compliance with the License. You may obtain |
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# a copy of the License at |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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# License for the specific language governing permissions and limitations |
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# under the License. |
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# For those usages not covered by the Apache License, Version 2.0 please |
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# contact: bdiaz@whitestack.com or glavado@whitestack.com |
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## |
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import json |
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import logging |
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import operator |
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import functools |
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import requests |
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from requests.exceptions import ConnectionError, RequestException |
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from osm_policy_module.common.common_db_client import CommonDbClient |
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from osm_policy_module.common.lcm_client import LcmClient |
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from osm_policy_module.common.mon_client import MonClient |
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from osm_policy_module.core import database |
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from osm_policy_module.core.config import Config |
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from osm_policy_module.core.database import ( |
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VnfAlarm, |
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VnfAlarmRepository, |
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AlarmActionRepository, |
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) |
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from osm_policy_module.core.exceptions import VdurNotFound |
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log = logging.getLogger(__name__) |
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class AlarmingService: |
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def __init__(self, config: Config): |
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self.conf = config |
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self.db_client = CommonDbClient(config) |
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self.mon_client = MonClient(config) |
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self.lcm_client = LcmClient(config) |
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|
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async def configure_vnf_alarms(self, nsr_id: str, vnf_member_index=None): |
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log.info("Configuring vnf alarms for network service %s", nsr_id) |
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alarms_created = [] |
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database.db.connect() |
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try: |
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with database.db.atomic(): |
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if vnf_member_index is None: |
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vnfrs = self.db_client.get_vnfrs(nsr_id) |
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else: |
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vnfrs = [] |
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vnfr = self.db_client.get_vnfr(nsr_id, vnf_member_index) |
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vnfrs.append(vnfr) |
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# vnfrs = self.db_client.get_vnfrs(nsr_id) |
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for vnfr in vnfrs: |
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log.debug("Processing vnfr: %s", vnfr) |
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vnfd = self.db_client.get_vnfd(vnfr["vnfd-id"]) |
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for vdur in vnfr["vdur"]: |
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vdu = next( |
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filter( |
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lambda vdu: vdu["id"] == vdur["vdu-id-ref"], vnfd["vdu"] |
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) |
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) |
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if "alarm" in vdu: |
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alarm_descriptors = vdu["alarm"] |
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for alarm_descriptor in alarm_descriptors: |
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try: |
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VnfAlarmRepository.get( |
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VnfAlarm.alarm_id |
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== alarm_descriptor["alarm-id"], |
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VnfAlarm.vnf_member_index |
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== vnfr["member-vnf-index-ref"], |
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VnfAlarm.vdu_name == vdur["name"], |
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VnfAlarm.nsr_id == nsr_id, |
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) |
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log.debug( |
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"vdu %s already has an alarm configured with same id %s", |
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vdur["name"], |
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alarm_descriptor["alarm-id"], |
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) |
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continue |
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except VnfAlarm.DoesNotExist: |
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pass |
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vnf_monitoring_param = next( |
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filter( |
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lambda param: param["id"] |
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== alarm_descriptor["vnf-monitoring-param-ref"], |
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vdu.get("monitoring-parameter", []), |
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), |
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{}, |
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) |
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metric_name = self._get_metric_name( |
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vnf_monitoring_param |
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) |
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alarm_action = dict() |
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for action_type in ["ok", "insufficient-data", "alarm"]: |
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if ( |
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"actions" in alarm_descriptor |
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and action_type in alarm_descriptor["actions"] |
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): |
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for url in alarm_descriptor["actions"][ |
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action_type |
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]: |
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if "webhook" in alarm_action: |
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alarm_action["webhook"].append( |
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url["url"] |
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) |
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else: |
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alarm_action["webhook"] = [url["url"]] |
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alarm_uuid = await self.mon_client.create_alarm( |
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metric_name=metric_name, |
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ns_id=nsr_id, |
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vdu_name=vdur["name"], |
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vnf_member_index=vnfr["member-vnf-index-ref"], |
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threshold=alarm_descriptor["value"], |
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operation=alarm_descriptor["operation"], |
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action=str(alarm_action), |
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vnfr=vnfr, |
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vnfd=vnfd, |
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) |
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alarm = VnfAlarmRepository.create( |
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alarm_id=alarm_descriptor["alarm-id"], |
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alarm_uuid=alarm_uuid, |
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nsr_id=nsr_id, |
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vnf_member_index=vnfr["member-vnf-index-ref"], |
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vdu_name=vdur["name"], |
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last_action="insufficient-data", |
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id_suffix=0, |
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ok_ack=False, |
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alarm_ack=False, |
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) |
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for action_type in ["ok", "insufficient-data", "alarm"]: |
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if ( |
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"actions" in alarm_descriptor |
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and action_type in alarm_descriptor["actions"] |
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): |
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for url in alarm_descriptor["actions"][ |
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action_type |
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]: |
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AlarmActionRepository.create( |
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type=action_type, |
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url=url["url"], |
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alarm=alarm, |
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) |
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alarms_created.append(alarm) |
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except Exception as e: |
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log.exception("Error configuring VNF alarms:") |
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if len(alarms_created) > 0: |
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log.debug("Cleaning alarm resources in MON") |
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for alarm in alarms_created: |
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try: |
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await self.mon_client.delete_alarm( |
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alarm.nsr_id, |
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alarm.vnf_member_index, |
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alarm.vdu_name, |
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alarm.alarm_uuid, |
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) |
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except ValueError: |
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log.exception( |
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"Error deleting alarm in MON %s", alarm.alarm_uuid |
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) |
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raise e |
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finally: |
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database.db.close() |
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async def delete_orphaned_alarms(self, nsr_id): |
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# TODO: Review as it seems this code is never called |
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log.info("Deleting orphaned vnf alarms for network service %s", nsr_id) |
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database.db.connect() |
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try: |
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with database.db.atomic(): |
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for alarm in VnfAlarmRepository.list(VnfAlarm.nsr_id == nsr_id): |
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try: |
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self.db_client.get_vdur( |
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nsr_id, alarm.vnf_member_index, alarm.vdu_name |
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) |
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except VdurNotFound: |
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log.debug("Deleting orphaned alarm %s", alarm.alarm_uuid) |
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try: |
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await self.mon_client.delete_alarm( |
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alarm.nsr_id, |
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alarm.vnf_member_index, |
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alarm.vdu_name, |
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alarm.alarm_uuid, |
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) |
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except ValueError: |
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log.exception( |
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"Error deleting alarm in MON %s", alarm.alarm_uuid |
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) |
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alarm.delete_instance() |
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except Exception as e: |
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log.exception("Error deleting orphaned alarms:") |
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raise e |
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finally: |
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database.db.close() |
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async def delete_vnf_alarms(self, nsr_id, vnf_member_index=None): |
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log.info("Deleting vnf alarms for network service %s", nsr_id) |
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database.db.connect() |
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try: |
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with database.db.atomic(): |
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if vnf_member_index is None: |
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alarm_conditions = VnfAlarm.nsr_id == nsr_id |
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else: |
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query_list = [ |
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VnfAlarm.nsr_id == nsr_id, |
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VnfAlarm.vnf_member_index == vnf_member_index, |
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] |
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alarm_conditions = functools.reduce(operator.and_, query_list) |
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for alarm in VnfAlarmRepository.list(alarm_conditions): |
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log.debug("Deleting vnf alarm %s", alarm.alarm_uuid) |
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try: |
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await self.mon_client.delete_alarm( |
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alarm.nsr_id, |
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alarm.vnf_member_index, |
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alarm.vdu_name, |
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alarm.alarm_uuid, |
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) |
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except ValueError: |
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log.exception( |
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"Error deleting alarm in MON %s", alarm.alarm_uuid |
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) |
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alarm.delete_instance() |
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except Exception as e: |
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log.exception("Error deleting vnf alarms:") |
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raise e |
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finally: |
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database.db.close() |
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|
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async def handle_alarm(self, alarm_uuid: str, status: str, payload: dict): |
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alert_timeout = int(self.conf.get("alert", "timeout")) |
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database.db.connect() |
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try: |
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with database.db.atomic(): |
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alarm = VnfAlarmRepository.get(VnfAlarm.alarm_uuid == alarm_uuid) |
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log.debug( |
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"Handling vnf alarm %s with status %s", alarm.alarm_id, status |
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) |
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for action in alarm.actions: |
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""" |
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Compares the current status with the last_action status. |
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If both the status are 'alarm', it avoid sending repetitive alarm notification. |
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If both the status are 'ok', it avoid sending repetitive ok notification. |
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""" |
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if action.type == status: |
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if bool(self.conf.get("alert", "enhanced_alarms")): |
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if ( |
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status != "ok" |
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or (status == "ok" and alarm.ok_ack is False) |
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) and ( |
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status != "alarm" |
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or (status == "alarm" and alarm.alarm_ack is False) |
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): |
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log.info( |
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"Executing request to url %s for vnf alarm %s with status %s", |
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action.url, |
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alarm.alarm_id, |
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status, |
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) |
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try: |
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if ( |
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status == "alarm" |
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and alarm.last_action == "ok" |
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or ( |
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status == "alarm" |
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and alarm.last_action == "insufficient-data" |
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) |
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): |
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alarm.id_suffix += 1 |
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alarm.ok_ack = False |
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if status == "ok" and alarm.last_action == "alarm": |
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alarm.alarm_ack = False |
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alarm.last_action = status |
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alarm.save() |
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except Exception as e: |
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log.exception(e) |
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|
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payload["notify_details"][ |
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"alarm_number" |
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] = alarm.id_suffix |
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headers = {"content-type": "application/json"} |
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try: |
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resp = requests.post( |
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url=action.url, |
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data=json.dumps(payload), |
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headers=headers, |
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timeout=alert_timeout, |
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) |
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log.info("Response %s", resp) |
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if resp.status_code == 200: |
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if status == "ok": |
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alarm.ok_ack = True |
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alarm.save() |
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if status == "alarm": |
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alarm.alarm_ack = True |
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alarm.save() |
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if status == "insufficient-data": |
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alarm.alarm_ack = False |
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alarm.ok_ack = False |
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alarm.save() |
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except ConnectionError: |
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log.exception( |
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"Error connecting to url %s", action.url |
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) |
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except RequestException as e: |
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log.info( |
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"Error: RequestException while connecting to url %s", |
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action.url, |
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) |
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log.debug("RequestException %s", e) |
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|
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else: |
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log.info( |
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"Executing request to url %s for vnf alarm %s with status %s", |
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action.url, |
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alarm.alarm_id, |
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status, |
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) |
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try: |
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requests.post( |
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url=action.url, |
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json=json.dumps(payload), |
| 338 |
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timeout=alert_timeout, |
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) |
| 340 |
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except ConnectionError: |
| 341 |
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log.exception("Error connecting to url %s", action.url) |
| 342 |
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except RequestException as e: |
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log.info( |
| 344 |
|
"Error: RequestException while connecting to url %s", |
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action.url, |
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) |
| 347 |
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log.debug("RequestException %s", e) |
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|
| 349 |
0 |
except VnfAlarm.DoesNotExist: |
| 350 |
0 |
log.debug( |
| 351 |
|
"There is no alarming action configured for alarm %s.", alarm_uuid |
| 352 |
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) |
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finally: |
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database.db.close() |
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|
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def _get_metric_name(self, vnf_monitoring_param: dict): |
| 357 |
1 |
if "performance-metric" in vnf_monitoring_param: |
| 358 |
1 |
return vnf_monitoring_param["performance-metric"] |
| 359 |
0 |
raise ValueError( |
| 360 |
|
"No metric name found for vnf_monitoring_param %s" |
| 361 |
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% vnf_monitoring_param["id"] |
| 362 |
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) |
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