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# -*- coding: utf-8 -*- |
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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 asyncio |
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import logging |
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from pathlib import Path |
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import os |
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import peewee |
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from osm_policy_module.alarming.service import AlarmingService |
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from osm_policy_module.autoscaling.service import AutoscalingService |
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from osm_policy_module.common.common_db_client import CommonDbClient |
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from osm_policy_module.common.message_bus_client import MessageBusClient |
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from osm_policy_module.core.config import Config |
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log = logging.getLogger(__name__) |
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ALLOWED_KAFKA_KEYS = ['instantiated', 'scaled', 'terminated', 'notify_alarm'] |
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class PolicyModuleAgent: |
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def __init__(self, config: Config, loop=None): |
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self.conf = config |
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if not loop: |
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loop = asyncio.get_event_loop() |
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self.loop = loop |
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self.msg_bus = MessageBusClient(config) |
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self.db_client = CommonDbClient(config) |
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self.autoscaling_service = AutoscalingService(config, loop) |
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self.alarming_service = AlarmingService(config, loop) |
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def run(self): |
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self.loop.run_until_complete(self.start()) |
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async def start(self): |
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Path('/tmp/osm_pol_agent_health_flag').touch() |
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topics = [ |
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"ns", |
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"alarm_response" |
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] |
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await self.msg_bus.aioread(topics, self._process_msg) |
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log.critical("Exiting...") |
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if os.path.exists('/tmp/osm_pol_agent_health_flag'): |
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os.remove('/tmp/osm_pol_agent_health_flag') |
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async def _process_msg(self, topic, key, msg): |
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Path('/tmp/osm_pol_agent_health_flag').touch() |
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log.debug("_process_msg topic=%s key=%s msg=%s", topic, key, msg) |
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try: |
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if key in ALLOWED_KAFKA_KEYS: |
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if key == 'instantiated': |
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await self._handle_instantiated(msg) |
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if key == 'scaled': |
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await self._handle_scaled(msg) |
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if key == 'terminated': |
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await self._handle_terminated(msg) |
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if key == 'notify_alarm': |
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await self._handle_alarm_notification(msg) |
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else: |
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log.debug("Key %s is not in ALLOWED_KAFKA_KEYS", key) |
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except peewee.PeeweeException: |
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log.exception("Database error consuming message: ") |
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raise |
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except Exception: |
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log.exception("Error consuming message: ") |
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async def _handle_alarm_notification(self, content): |
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log.debug("_handle_alarm_notification: %s", content) |
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alarm_uuid = content['notify_details']['alarm_uuid'] |
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status = content['notify_details']['status'] |
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await self.autoscaling_service.handle_alarm(alarm_uuid, status) |
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await self.alarming_service.handle_alarm(alarm_uuid, status, content) |
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async def _handle_instantiated(self, content): |
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log.debug("_handle_instantiated: %s", content) |
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nslcmop_id = content['nslcmop_id'] |
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nslcmop = self.db_client.get_nslcmop(nslcmop_id) |
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if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED': |
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nsr_id = nslcmop['nsInstanceId'] |
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log.info("Configuring nsr_id: %s", nsr_id) |
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await self.autoscaling_service.configure_scaling_groups(nsr_id) |
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await self.alarming_service.configure_vnf_alarms(nsr_id) |
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else: |
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log.info( |
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"Network_service is not in COMPLETED or PARTIALLY_COMPLETED state. " |
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"Current state is %s. Skipping...", |
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nslcmop['operationState']) |
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async def _handle_scaled(self, content): |
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log.debug("_handle_scaled: %s", content) |
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nslcmop_id = content['nslcmop_id'] |
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nslcmop = self.db_client.get_nslcmop(nslcmop_id) |
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if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED': |
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nsr_id = nslcmop['nsInstanceId'] |
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log.info("Configuring scaled service with nsr_id: %s", nsr_id) |
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await self.autoscaling_service.configure_scaling_groups(nsr_id) |
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await self.autoscaling_service.delete_orphaned_alarms(nsr_id) |
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await self.alarming_service.configure_vnf_alarms(nsr_id) |
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else: |
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log.debug( |
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"Network service is not in COMPLETED or PARTIALLY_COMPLETED state. " |
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"Current state is %s. Skipping...", |
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nslcmop['operationState']) |
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async def _handle_terminated(self, content): |
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log.debug("_handle_deleted: %s", content) |
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nsr_id = content['nsr_id'] |
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if content['operationState'] == 'COMPLETED' or content['operationState'] == 'PARTIALLY_COMPLETED': |
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log.info("Deleting scaling groups and alarms for network autoscaling_service with nsr_id: %s", nsr_id) |
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await self.autoscaling_service.delete_scaling_groups(nsr_id) |
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await self.alarming_service.delete_vnf_alarms(nsr_id) |
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else: |
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log.info( |
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"Network service is not in COMPLETED or PARTIALLY_COMPLETED state. " |
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"Current state is %s. Skipping...", |
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content['operationState']) |
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