lcm/lcm/nf/views/heal_vnf_view.py

   1 # Copyright (C) 2018 Verizon. All Rights Reserved.\r
   2 #\r
   3 # Licensed under the Apache License, Version 2.0 (the "License");\r
   4 # you may not use this file except in compliance with the License.\r
   5 # You may obtain a copy of the License at\r
   6 #\r
   7 #       http://www.apache.org/licenses/LICENSE-2.0\r
   8 #\r
   9 # Unless required by applicable law or agreed to in writing, software\r
  10 # distributed under the License is distributed on an "AS IS" BASIS,\r
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  12 # See the License for the specific language governing permissions and\r
  13 # limitations under the License.\r
  14 \r
  15 import logging\r
  16 import traceback\r
  17 \r
  18 from drf_yasg.utils import swagger_auto_schema\r
  19 from rest_framework import status\r
  20 from rest_framework.response import Response\r
  21 from rest_framework.views import APIView\r
  22 \r
  23 from lcm.nf.biz.heal_vnf import HealVnf\r
  24 from lcm.nf.serializers.heal_vnf_req import HealVnfRequestSerializer\r
  25 from lcm.nf.serializers.response import ProblemDetailsSerializer\r
  26 from lcm.pub.exceptions import NFLCMException, NFLCMExceptionNotFound, NFLCMExceptionConflict\r
  27 from lcm.pub.utils.jobutil import JobUtil\r
  28 from lcm.pub.database.models import NfInstModel\r
  29 from lcm.nf.const import VNF_STATUS\r
  30 \r
  31 logger = logging.getLogger(__name__)\r
  32 \r
  33 \r
  34 class HealVnfView(APIView):\r
  35     @swagger_auto_schema(\r
  36         request_body=HealVnfRequestSerializer(),\r
  37         responses={\r
  38             status.HTTP_202_ACCEPTED: "Success",\r
  39             status.HTTP_404_NOT_FOUND: ProblemDetailsSerializer(),\r
  40             status.HTTP_409_CONFLICT: ProblemDetailsSerializer(),\r
  41             status.HTTP_500_INTERNAL_SERVER_ERROR: "Internal error"\r
  42         }\r
  43     )\r
  44     def post(self, request, instanceid):\r
  45         logger.debug("HealVnf--post::> %s" % request.data)\r
  46         try:\r
  47             heal_vnf_request_serializer = HealVnfRequestSerializer(data=request.data)\r
  48             if not heal_vnf_request_serializer.is_valid():\r
  49                 raise NFLCMException(heal_vnf_request_serializer.errors)\r
  50 \r
  51             job_id = JobUtil.create_job('NF', 'HEAL', instanceid)\r
  52             JobUtil.add_job_status(job_id, 0, "HEAL_VNF_READY")\r
  53             self.heal_pre_check(instanceid, job_id)\r
  54             HealVnf(heal_vnf_request_serializer.data, instanceid, job_id).start()\r
  55             response = Response(data={"jobId": job_id}, status=status.HTTP_202_ACCEPTED)\r
  56             # todo, heal_vnf codes uses job as the status storage, not in VNFLcmOpOccModel.\r
  57             # response["Location"] = "/api/vnflcm/v1/vnf_lc_ops/%s" % lcmopoccid\r
  58             return response\r
  59         except NFLCMExceptionNotFound as e:\r
  60             probDetail = ProblemDetailsSerializer(data={"status": status.HTTP_404_NOT_FOUND, "detail": "VNF Instance not found"})\r
  61             resp_isvalid = probDetail.is_valid()\r
  62             if not resp_isvalid:\r
  63                 raise NFLCMException(probDetail.errors)\r
  64             return Response(data=probDetail.data, status=status.HTTP_404_NOT_FOUND)\r
  65         except NFLCMExceptionConflict as e:\r
  66             probDetail = ProblemDetailsSerializer(data={"status": status.HTTP_409_CONFLICT, "detail": "VNF Instance not in Instantiated State"})\r
  67             resp_isvalid = probDetail.is_valid()\r
  68             if not resp_isvalid:\r
  69                     raise NFLCMException(probDetail.errors)\r
  70             return Response(data=probDetail.data, status=status.HTTP_409_CONFLICT)\r
  71         except NFLCMException as e:\r
  72             logger.error(e.message)\r
  73             return Response(data={'error': '%s' % e.message}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)\r
  74         except Exception as e:\r
  75             logger.error(e.message)\r
  76             logger.error(traceback.format_exc())\r
  77             return Response(data={'error': 'unexpected exception'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)\r
  78 \r
  79     def heal_pre_check(self, nf_inst_id, job_id):\r
  80         vnf_insts = NfInstModel.objects.filter(nfinstid=nf_inst_id)\r
  81         if not vnf_insts.exists():\r
  82             raise NFLCMExceptionNotFound("VNF nf_inst_id does not exist.")\r
  83 \r
  84         if vnf_insts[0].status != 'INSTANTIATED':\r
  85             raise NFLCMExceptionConflict("VNF instantiationState is not INSTANTIATED.")\r
  86 \r
  87         NfInstModel.objects.filter(nfinstid=nf_inst_id).update(status=VNF_STATUS.HEALING)\r
  88         JobUtil.add_job_status(job_id, 15, 'Nf healing pre-check finish')\r
  89         logger.info("Nf healing pre-check finish")\r