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 from pathlib import Path
  27 import os
  28
  29 import peewee
  30
  31 from osm_policy_module.alarming.service import AlarmingService
  32 from osm_policy_module.autoscaling.service import AutoscalingService
  33 from osm_policy_module.healing.service import HealingService
  34 from osm_policy_module.common.common_db_client import CommonDbClient
  35 from osm_policy_module.common.message_bus_client import MessageBusClient
  36 from osm_policy_module.core.config import Config
  37
  38 log = logging.getLogger(__name__)
  39
  40 ALLOWED_KAFKA_KEYS = [
  41     "instantiated",
  42     "scaled",
  43     "terminated",
  44     "notify_alarm",
  45     "policy_updated",
  46     "vnf_terminated",
  47 ]
  48
  49
  50 class PolicyModuleAgent:
  51     def __init__(self, config: Config, loop=None):
  52         self.conf = config
  53         if not loop:
  54             loop = asyncio.get_event_loop()
  55         self.loop = loop
  56         self.msg_bus = MessageBusClient(config)
  57         self.db_client = CommonDbClient(config)
  58         self.autoscaling_service = AutoscalingService(config, loop)
  59         self.alarming_service = AlarmingService(config, loop)
  60         self.healing_service = HealingService(config, loop)
  61
  62     def run(self):
  63         self.loop.run_until_complete(self.start())
  64
  65     async def start(self):
  66         Path("/tmp/osm_pol_agent_health_flag").touch()
  67         topics = ["ns", "alarm_response"]
  68         await self.msg_bus.aioread(topics, self._process_msg)
  69         log.critical("Exiting...")
  70         if os.path.exists("/tmp/osm_pol_agent_health_flag"):
  71             os.remove("/tmp/osm_pol_agent_health_flag")
  72
  73     async def _process_msg(self, topic, key, msg):
  74         Path("/tmp/osm_pol_agent_health_flag").touch()
  75         log.debug("_process_msg topic=%s key=%s msg=%s", topic, key, msg)
  76         try:
  77             if key in ALLOWED_KAFKA_KEYS:
  78                 if key == "instantiated":
  79                     await self._handle_instantiated(msg)
  80
  81                 if key == "scaled":
  82                     await self._handle_scaled(msg)
  83
  84                 if key == "terminated":
  85                     await self._handle_terminated(msg)
  86
  87                 if key == "notify_alarm":
  88                     await self._handle_alarm_notification(msg)
  89
  90                 if key == "policy_updated":
  91                     await self._handle_policy_update(msg)
  92
  93                 if key == "vnf_terminated":
  94                     await self._handle_vnf_terminated(msg)
  95             else:
  96                 log.debug("Key %s is not in ALLOWED_KAFKA_KEYS", key)
  97         except peewee.PeeweeException:
  98             log.exception("Database error consuming message: ")
  99             raise
 100         except Exception:
 101             log.exception("Error consuming message: ")
 102
 103     async def _handle_alarm_notification(self, content):
 104         log.debug("_handle_alarm_notification: %s", content)
 105         alarm_uuid = content["notify_details"]["alarm_uuid"]
 106         status = content["notify_details"]["status"]
 107         await self.autoscaling_service.handle_alarm(alarm_uuid, status)
 108         await self.alarming_service.handle_alarm(alarm_uuid, status, content)
 109         await self.healing_service.handle_alarm(alarm_uuid, status)
 110
 111     async def _handle_instantiated(self, content):
 112         log.debug("_handle_instantiated: %s", content)
 113         nslcmop_id = content["nslcmop_id"]
 114         nslcmop = self.db_client.get_nslcmop(nslcmop_id)
 115         if (
 116             nslcmop["operationState"] == "COMPLETED"
 117             or nslcmop["operationState"] == "PARTIALLY_COMPLETED"
 118         ):
 119             nsr_id = nslcmop["nsInstanceId"]
 120             log.info("Configuring nsr_id: %s", nsr_id)
 121             await self.autoscaling_service.configure_scaling_groups(nsr_id)
 122             await self.alarming_service.configure_vnf_alarms(nsr_id)
 123             await self.healing_service.configure_healing_alarms(nsr_id)
 124         else:
 125             log.info(
 126                 "Network_service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 127                 "Current state is %s. Skipping...",
 128                 nslcmop["operationState"],
 129             )
 130
 131     async def _handle_scaled(self, content):
 132         log.debug("_handle_scaled: %s", content)
 133         nslcmop_id = content["nslcmop_id"]
 134         nslcmop = self.db_client.get_nslcmop(nslcmop_id)
 135         if (
 136             nslcmop["operationState"] == "COMPLETED"
 137             or nslcmop["operationState"] == "PARTIALLY_COMPLETED"
 138         ):
 139             nsr_id = nslcmop["nsInstanceId"]
 140             log.info("Configuring scaled service with nsr_id: %s", nsr_id)
 141             await self.autoscaling_service.configure_scaling_groups(nsr_id)
 142             await self.autoscaling_service.delete_orphaned_alarms(nsr_id)
 143             await self.alarming_service.configure_vnf_alarms(nsr_id)
 144             await self.healing_service.configure_healing_alarms(nsr_id)
 145             await self.healing_service.delete_orphaned_healing_alarms(nsr_id)
 146         else:
 147             log.debug(
 148                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 149                 "Current state is %s. Skipping...",
 150                 nslcmop["operationState"],
 151             )
 152
 153     async def _handle_terminated(self, content):
 154         log.debug("_handle_deleted: %s", content)
 155         nsr_id = content["nsr_id"]
 156         if (
 157             content["operationState"] == "COMPLETED"
 158             or content["operationState"] == "PARTIALLY_COMPLETED"
 159         ):
 160             log.info(
 161                 "Deleting scaling groups and alarms for network autoscaling_service with nsr_id: %s",
 162                 nsr_id,
 163             )
 164             await self.autoscaling_service.delete_scaling_groups(nsr_id)
 165             await self.alarming_service.delete_vnf_alarms(nsr_id)
 166             await self.healing_service.delete_healing_alarms(nsr_id)
 167         else:
 168             log.info(
 169                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 170                 "Current state is %s. Skipping...",
 171                 content["operationState"],
 172             )
 173
 174     async def _handle_policy_update(self, content):
 175         log.info("_handle_policy_update: %s", content)
 176         nsr_id = content["nsr_id"]
 177         vnf_member_index = content["vnf_member_index"]
 178         if (
 179             content["operationState"] == "COMPLETED"
 180             or content["operationState"] == "PARTIALLY_COMPLETED"
 181         ):
 182             log.info(
 183                 "Updating policies of VNF with nsr_id: %s and vnf-member-index: %s"
 184                 % (nsr_id, vnf_member_index)
 185             )
 186             await self.autoscaling_service.delete_scaling_groups(
 187                 nsr_id, vnf_member_index
 188             )
 189             await self.alarming_service.delete_vnf_alarms(nsr_id, vnf_member_index)
 190             await self.autoscaling_service.configure_scaling_groups(
 191                 nsr_id, vnf_member_index
 192             )
 193             await self.alarming_service.configure_vnf_alarms(nsr_id, vnf_member_index)
 194         else:
 195             log.info(
 196                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 197                 "Current state is %s. Skipping...",
 198                 content["operationState"],
 199             )
 200
 201     async def _handle_vnf_terminated(self, content):
 202         nsr_id = content["nsr_id"]
 203         vnf_member_index = content["vnf_member_index"]
 204         if (
 205             content["operationState"] == "COMPLETED"
 206             or content["operationState"] == "PARTIALLY_COMPLETED"
 207         ):
 208             log.info(
 209                 "Deleting policies of VNF with nsr_id: %s and vnf-member-index: %s"
 210                 % (nsr_id, vnf_member_index)
 211             )
 212             await self.autoscaling_service.delete_scaling_groups(
 213                 nsr_id, vnf_member_index
 214             )
 215             await self.alarming_service.delete_vnf_alarms(nsr_id, vnf_member_index)
 216         else:
 217             log.info(
 218                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 219                 "Current state is %s. Skipping...",
 220                 content["operationState"],
 221             )