osm_policy_module/core/agent.py

   1 # -*- coding: utf-8 -*-
   2
   3 # Copyright 2018 Whitestack, LLC
   4 # *************************************************************
   5
   6 # This file is part of OSM Monitoring module
   7 # All Rights Reserved to Whitestack, LLC
   8
   9 # Licensed under the Apache License, Version 2.0 (the "License"); you may
  10 # not use this file except in compliance with the License. You may obtain
  11 # a copy of the License at
  12
  13 #         http://www.apache.org/licenses/LICENSE-2.0
  14
  15 # Unless required by applicable law or agreed to in writing, software
  16 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  17 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  18 # License for the specific language governing permissions and limitations
  19 # under the License.
  20
  21 # For those usages not covered by the Apache License, Version 2.0 please
  22 # contact: bdiaz@whitestack.com or glavado@whitestack.com
  23 ##
  24 import asyncio
  25 import logging
  26
  27 import peewee
  28
  29 from osm_policy_module.alarming.service import AlarmingService
  30 from osm_policy_module.autoscaling.service import AutoscalingService
  31 from osm_policy_module.common.message_bus_client import MessageBusClient
  32 from osm_policy_module.core.config import Config
  33
  34 log = logging.getLogger(__name__)
  35
  36 ALLOWED_KAFKA_KEYS = ['instantiated', 'scaled', 'terminated', 'notify_alarm']
  37
  38
  39 class PolicyModuleAgent:
  40     def __init__(self, config: Config, loop=None):
  41         self.conf = config
  42         if not loop:
  43             loop = asyncio.get_event_loop()
  44         self.loop = loop
  45         self.msg_bus = MessageBusClient(config)
  46         self.autoscaling_service = AutoscalingService(config, loop)
  47         self.alarming_service = AlarmingService(config, loop)
  48
  49     def run(self):
  50         self.loop.run_until_complete(self.start())
  51
  52     async def start(self):
  53         topics = [
  54             "ns",
  55             "alarm_response"
  56         ]
  57         await self.msg_bus.aioread(topics, self._process_msg)
  58         log.critical("Exiting...")
  59
  60     async def _process_msg(self, topic, key, msg):
  61         log.debug("_process_msg topic=%s key=%s msg=%s", topic, key, msg)
  62         try:
  63             if key in ALLOWED_KAFKA_KEYS:
  64
  65                 if key == 'instantiated':
  66                     await self._handle_instantiated(msg)
  67
  68                 if key == 'scaled':
  69                     await self._handle_scaled(msg)
  70
  71                 if key == 'terminated':
  72                     await self._handle_terminated(msg)
  73
  74                 if key == 'notify_alarm':
  75                     await self._handle_alarm_notification(msg)
  76             else:
  77                 log.debug("Key %s is not in ALLOWED_KAFKA_KEYS", key)
  78         except peewee.PeeweeException:
  79             log.exception("Database error consuming message: ")
  80             raise
  81         except Exception:
  82             log.exception("Error consuming message: ")
  83
  84     async def _handle_alarm_notification(self, content):
  85         log.debug("_handle_alarm_notification: %s", content)
  86         alarm_uuid = content['notify_details']['alarm_uuid']
  87         status = content['notify_details']['status']
  88         await self.autoscaling_service.handle_alarm(alarm_uuid, status)
  89         await self.alarming_service.handle_alarm(alarm_uuid, status, content)
  90
  91     async def _handle_instantiated(self, content):
  92         log.debug("_handle_instantiated: %s", content)
  93         nslcmop_id = content['nslcmop_id']
  94         nslcmop = self.autoscaling_service.get_nslcmop(nslcmop_id)
  95         if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED':
  96             nsr_id = nslcmop['nsInstanceId']
  97             log.info("Configuring nsr_id: %s", nsr_id)
  98             await self.autoscaling_service.configure_scaling_groups(nsr_id)
  99             await self.alarming_service.configure_vnf_alarms(nsr_id)
 100         else:
 101             log.info(
 102                 "Network_service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 103                 "Current state is %s. Skipping...",
 104                 nslcmop['operationState'])
 105
 106     async def _handle_scaled(self, content):
 107         log.debug("_handle_scaled: %s", content)
 108         nslcmop_id = content['nslcmop_id']
 109         nslcmop = self.autoscaling_service.get_nslcmop(nslcmop_id)
 110         if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED':
 111             nsr_id = nslcmop['nsInstanceId']
 112             log.info("Configuring scaled service with nsr_id: %s", nsr_id)
 113             await self.autoscaling_service.configure_scaling_groups(nsr_id)
 114             await self.autoscaling_service.delete_orphaned_alarms(nsr_id)
 115             await self.alarming_service.configure_vnf_alarms(nsr_id)
 116         else:
 117             log.debug(
 118                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 119                 "Current state is %s. Skipping...",
 120                 nslcmop['operationState'])
 121
 122     async def _handle_terminated(self, content):
 123         log.debug("_handle_deleted: %s", content)
 124         nsr_id = content['nsr_id']
 125         if content['operationState'] == 'COMPLETED' or content['operationState'] == 'PARTIALLY_COMPLETED':
 126             log.info("Deleting scaling groups and alarms for network autoscaling_service with nsr_id: %s", nsr_id)
 127             await self.autoscaling_service.delete_scaling_groups(nsr_id)
 128             await self.alarming_service.delete_vnf_alarms(nsr_id)
 129         else:
 130             log.info(
 131                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 132                 "Current state is %s. Skipping...",
 133                 content['operationState'])