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.common_db_client import CommonDbClient
  32 from osm_policy_module.common.message_bus_client import MessageBusClient
  33 from osm_policy_module.core.config import Config
  34
  35 log = logging.getLogger(__name__)
  36
  37 ALLOWED_KAFKA_KEYS = ['instantiated', 'scaled', 'terminated', 'notify_alarm']
  38
  39
  40 class PolicyModuleAgent:
  41     def __init__(self, config: Config, loop=None):
  42         self.conf = config
  43         if not loop:
  44             loop = asyncio.get_event_loop()
  45         self.loop = loop
  46         self.msg_bus = MessageBusClient(config)
  47         self.db_client = CommonDbClient(config)
  48         self.autoscaling_service = AutoscalingService(config, loop)
  49         self.alarming_service = AlarmingService(config, loop)
  50
  51     def run(self):
  52         self.loop.run_until_complete(self.start())
  53
  54     async def start(self):
  55         topics = [
  56             "ns",
  57             "alarm_response"
  58         ]
  59         await self.msg_bus.aioread(topics, self._process_msg)
  60         log.critical("Exiting...")
  61
  62     async def _process_msg(self, topic, key, msg):
  63         log.debug("_process_msg topic=%s key=%s msg=%s", topic, key, msg)
  64         try:
  65             if key in ALLOWED_KAFKA_KEYS:
  66
  67                 if key == 'instantiated':
  68                     await self._handle_instantiated(msg)
  69
  70                 if key == 'scaled':
  71                     await self._handle_scaled(msg)
  72
  73                 if key == 'terminated':
  74                     await self._handle_terminated(msg)
  75
  76                 if key == 'notify_alarm':
  77                     await self._handle_alarm_notification(msg)
  78             else:
  79                 log.debug("Key %s is not in ALLOWED_KAFKA_KEYS", key)
  80         except peewee.PeeweeException:
  81             log.exception("Database error consuming message: ")
  82             raise
  83         except Exception:
  84             log.exception("Error consuming message: ")
  85
  86     async def _handle_alarm_notification(self, content):
  87         log.debug("_handle_alarm_notification: %s", content)
  88         alarm_uuid = content['notify_details']['alarm_uuid']
  89         status = content['notify_details']['status']
  90         await self.autoscaling_service.handle_alarm(alarm_uuid, status)
  91         await self.alarming_service.handle_alarm(alarm_uuid, status, content)
  92
  93     async def _handle_instantiated(self, content):
  94         log.debug("_handle_instantiated: %s", content)
  95         nslcmop_id = content['nslcmop_id']
  96         nslcmop = self.db_client.get_nslcmop(nslcmop_id)
  97         if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED':
  98             nsr_id = nslcmop['nsInstanceId']
  99             log.info("Configuring nsr_id: %s", nsr_id)
 100             await self.autoscaling_service.configure_scaling_groups(nsr_id)
 101             await self.alarming_service.configure_vnf_alarms(nsr_id)
 102         else:
 103             log.info(
 104                 "Network_service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 105                 "Current state is %s. Skipping...",
 106                 nslcmop['operationState'])
 107
 108     async def _handle_scaled(self, content):
 109         log.debug("_handle_scaled: %s", content)
 110         nslcmop_id = content['nslcmop_id']
 111         nslcmop = self.db_client.get_nslcmop(nslcmop_id)
 112         if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED':
 113             nsr_id = nslcmop['nsInstanceId']
 114             log.info("Configuring scaled service with nsr_id: %s", nsr_id)
 115             await self.autoscaling_service.configure_scaling_groups(nsr_id)
 116             await self.autoscaling_service.delete_orphaned_alarms(nsr_id)
 117             await self.alarming_service.configure_vnf_alarms(nsr_id)
 118         else:
 119             log.debug(
 120                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 121                 "Current state is %s. Skipping...",
 122                 nslcmop['operationState'])
 123
 124     async def _handle_terminated(self, content):
 125         log.debug("_handle_deleted: %s", content)
 126         nsr_id = content['nsr_id']
 127         if content['operationState'] == 'COMPLETED' or content['operationState'] == 'PARTIALLY_COMPLETED':
 128             log.info("Deleting scaling groups and alarms for network autoscaling_service with nsr_id: %s", nsr_id)
 129             await self.autoscaling_service.delete_scaling_groups(nsr_id)
 130             await self.alarming_service.delete_vnf_alarms(nsr_id)
 131         else:
 132             log.info(
 133                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 134                 "Current state is %s. Skipping...",
 135                 content['operationState'])