osm_policy_module/common/lcm_client.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 datetime
  26 import json
  27 import logging
  28 import time
  29 import uuid
  30
  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
  38 class LcmClient:
  39     def __init__(self, config: Config, loop=None):
  40         self.db_client = CommonDbClient(config)
  41         self.msg_bus = MessageBusClient(config)
  42         if not loop:
  43             loop = asyncio.get_event_loop()
  44         self.loop = loop
  45
  46     async def scale(self, nsr_id: str, scaling_group_name: str, vnf_member_index: str, action: str):
  47         log.debug("scale %s %s %s %s", nsr_id, scaling_group_name, vnf_member_index, action)
  48         nslcmop = self._generate_nslcmop(nsr_id, scaling_group_name, vnf_member_index, action)
  49         self.db_client.create_nslcmop(nslcmop)
  50         log.debug("Sending scale action message: %s", json.dumps(nslcmop))
  51         await self.msg_bus.aiowrite("ns", "scale", nslcmop)
  52
  53     def _generate_nslcmop(self, nsr_id: str, scaling_group_name: str, vnf_member_index: str, action: str):
  54         log.debug("_generate_nslcmop %s %s %s %s", nsr_id, scaling_group_name, vnf_member_index, action)
  55         _id = str(uuid.uuid4())
  56         now = time.time()
  57         params = {
  58             "scaleType": "SCALE_VNF",
  59             "scaleVnfData": {
  60                 "scaleVnfType": action.upper(),
  61                 "scaleByStepData": {
  62                     "scaling-group-descriptor": scaling_group_name,
  63                     "member-vnf-index": vnf_member_index
  64                 }
  65             },
  66             "scaleTime": "{}Z".format(datetime.datetime.utcnow().isoformat())
  67         }
  68
  69         nslcmop = {
  70             "id": _id,
  71             "_id": _id,
  72             "operationState": "PROCESSING",
  73             "statusEnteredTime": now,
  74             "nsInstanceId": nsr_id,
  75             "lcmOperationType": "scale",
  76             "startTime": now,
  77             "isAutomaticInvocation": True,
  78             "operationParams": params,
  79             "isCancelPending": False,
  80             "links": {
  81                 "self": "/osm/nslcm/v1/ns_lcm_op_occs/" + _id,
  82                 "nsInstance": "/osm/nslcm/v1/ns_instances/" + nsr_id,
  83             }
  84         }
  85         return nslcmop