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):
  52         self.conf = config
  53         self.msg_bus = MessageBusClient(config)
  54         self.db_client = CommonDbClient(config)
  55         self.autoscaling_service = AutoscalingService(config)
  56         self.alarming_service = AlarmingService(config)
  57         self.healing_service = HealingService(config)
  58
  59     def run(self):
  60         asyncio.run(self.start())
  61
  62     async def start(self):
  63         Path("/tmp/osm_pol_agent_health_flag").touch()
  64         topics = ["ns", "alarm_response"]
  65         await self.msg_bus.aioread(topics, self._process_msg)
  66         log.critical("Exiting...")
  67         if os.path.exists("/tmp/osm_pol_agent_health_flag"):
  68             os.remove("/tmp/osm_pol_agent_health_flag")
  69
  70     async def _process_msg(self, topic, key, msg):
  71         Path("/tmp/osm_pol_agent_health_flag").touch()
  72         log.debug("_process_msg topic=%s key=%s msg=%s", topic, key, msg)
  73         try:
  74             if key in ALLOWED_KAFKA_KEYS:
  75                 if key == "instantiated":
  76                     await self._handle_instantiated(msg)
  77
  78                 if key == "scaled":
  79                     await self._handle_scaled(msg)
  80
  81                 if key == "terminated":
  82                     await self._handle_terminated(msg)
  83
  84                 if key == "notify_alarm":
  85                     await self._handle_alarm_notification(msg)
  86
  87                 if key == "policy_updated":
  88                     await self._handle_policy_update(msg)
  89
  90                 if key == "vnf_terminated":
  91                     await self._handle_vnf_terminated(msg)
  92             else:
  93                 log.debug("Key %s is not in ALLOWED_KAFKA_KEYS", key)
  94         except peewee.PeeweeException:
  95             log.exception("Database error consuming message: ")
  96             raise
  97         except Exception:
  98             log.exception("Error consuming message: ")
  99
 100     async def _handle_alarm_notification(self, content):
 101         log.debug("_handle_alarm_notification: %s", content)
 102         alarm_uuid = content["notify_details"]["alarm_uuid"]
 103         status = content["notify_details"]["status"]
 104         await self.autoscaling_service.handle_alarm(alarm_uuid, status)
 105         await self.alarming_service.handle_alarm(alarm_uuid, status, content)
 106         await self.healing_service.handle_alarm(alarm_uuid, status)
 107
 108     async def _handle_instantiated(self, content):
 109         log.debug("_handle_instantiated: %s", content)
 110         nslcmop_id = content["nslcmop_id"]
 111         nslcmop = self.db_client.get_nslcmop(nslcmop_id)
 112         if (
 113             nslcmop["operationState"] == "COMPLETED"
 114             or nslcmop["operationState"] == "PARTIALLY_COMPLETED"
 115         ):
 116             nsr_id = nslcmop["nsInstanceId"]
 117             log.info("Configuring nsr_id: %s", nsr_id)
 118             await self.autoscaling_service.configure_scaling_groups(nsr_id)
 119             await self.alarming_service.configure_vnf_alarms(nsr_id)
 120             await self.healing_service.configure_healing_alarms(nsr_id)
 121         else:
 122             log.info(
 123                 "Network_service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 124                 "Current state is %s. Skipping...",
 125                 nslcmop["operationState"],
 126             )
 127
 128     async def _handle_scaled(self, content):
 129         log.debug("_handle_scaled: %s", content)
 130         nslcmop_id = content["nslcmop_id"]
 131         nslcmop = self.db_client.get_nslcmop(nslcmop_id)
 132         if (
 133             nslcmop["operationState"] == "COMPLETED"
 134             or nslcmop["operationState"] == "PARTIALLY_COMPLETED"
 135         ):
 136             nsr_id = nslcmop["nsInstanceId"]
 137             log.info("Configuring scaled service with nsr_id: %s", nsr_id)
 138             await self.autoscaling_service.configure_scaling_groups(nsr_id)
 139             await self.autoscaling_service.delete_orphaned_alarms(nsr_id)
 140             await self.alarming_service.configure_vnf_alarms(nsr_id)
 141             await self.healing_service.configure_healing_alarms(nsr_id)
 142             await self.healing_service.delete_orphaned_healing_alarms(nsr_id)
 143         else:
 144             log.debug(
 145                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 146                 "Current state is %s. Skipping...",
 147                 nslcmop["operationState"],
 148             )
 149
 150     async def _handle_terminated(self, content):
 151         log.debug("_handle_deleted: %s", content)
 152         nsr_id = content["nsr_id"]
 153         if (
 154             content["operationState"] == "COMPLETED"
 155             or content["operationState"] == "PARTIALLY_COMPLETED"
 156         ):
 157             log.info(
 158                 "Deleting scaling groups and alarms for network autoscaling_service with nsr_id: %s",
 159                 nsr_id,
 160             )
 161             await self.autoscaling_service.delete_scaling_groups(nsr_id)
 162             await self.alarming_service.delete_vnf_alarms(nsr_id)
 163             await self.healing_service.delete_healing_alarms(nsr_id)
 164         else:
 165             log.info(
 166                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 167                 "Current state is %s. Skipping...",
 168                 content["operationState"],
 169             )
 170
 171     async def _handle_policy_update(self, content):
 172         log.info("_handle_policy_update: %s", content)
 173         nsr_id = content["nsr_id"]
 174         vnf_member_index = content["vnf_member_index"]
 175         if (
 176             content["operationState"] == "COMPLETED"
 177             or content["operationState"] == "PARTIALLY_COMPLETED"
 178         ):
 179             log.info(
 180                 "Updating policies of VNF with nsr_id: %s and vnf-member-index: %s"
 181                 % (nsr_id, vnf_member_index)
 182             )
 183             await self.autoscaling_service.delete_scaling_groups(
 184                 nsr_id, vnf_member_index
 185             )
 186             await self.alarming_service.delete_vnf_alarms(nsr_id, vnf_member_index)
 187             await self.healing_service.delete_healing_alarms(nsr_id, vnf_member_index)
 188             await self.autoscaling_service.configure_scaling_groups(
 189                 nsr_id, vnf_member_index
 190             )
 191             await self.alarming_service.configure_vnf_alarms(nsr_id, vnf_member_index)
 192             await self.healing_service.configure_healing_alarms(
 193                 nsr_id, vnf_member_index
 194             )
 195         else:
 196             log.info(
 197                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 198                 "Current state is %s. Skipping...",
 199                 content["operationState"],
 200             )
 201
 202     async def _handle_vnf_terminated(self, content):
 203         nsr_id = content["nsr_id"]
 204         vnf_member_index = content["vnf_member_index"]
 205         if (
 206             content["operationState"] == "COMPLETED"
 207             or content["operationState"] == "PARTIALLY_COMPLETED"
 208         ):
 209             log.info(
 210                 "Deleting policies of VNF with nsr_id: %s and vnf-member-index: %s"
 211                 % (nsr_id, vnf_member_index)
 212             )
 213             await self.autoscaling_service.delete_scaling_groups(
 214                 nsr_id, vnf_member_index
 215             )
 216             await self.alarming_service.delete_vnf_alarms(nsr_id, vnf_member_index)
 217         else:
 218             log.info(
 219                 "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
 220                 "Current state is %s. Skipping...",
 221                 content["operationState"],
 222             )