lcm/lcm/nf/views/scale_to_level_view.py

   1 # Copyright (C) 2019 ZTE. All Rights Reserved.
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #       http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 import logging
  16
  17 from drf_yasg.utils import swagger_auto_schema
  18 from rest_framework import status
  19 from rest_framework.response import Response
  20 from rest_framework.views import APIView
  21
  22 from lcm.nf.serializers.scale_vnf_to_level_request_serializer import ScaleVnfToLevelRequestSerializer
  23 from lcm.nf.serializers.response import ProblemDetailsSerializer
  24 from lcm.pub.exceptions import NFLCMException
  25 from lcm.pub.exceptions import NFLCMExceptionNotFound
  26 from lcm.pub.exceptions import NFLCMExceptionConflict
  27 from lcm.pub.utils.jobutil import JobUtil
  28 from lcm.pub.database.models import NfInstModel
  29 from lcm.nf.const import VNF_STATUS
  30 from lcm.nf.biz.scale_vnf_to_level import ScaleVnfToLevel
  31 from .common import view_safe_call_with_log
  32
  33 logger = logging.getLogger(__name__)
  34
  35
  36 class ScaleVnfToLevelView(APIView):
  37     @swagger_auto_schema(
  38         request_body=ScaleVnfToLevelRequestSerializer(),
  39         responses={
  40             status.HTTP_202_ACCEPTED: "Success",
  41             status.HTTP_404_NOT_FOUND: ProblemDetailsSerializer(),
  42             status.HTTP_409_CONFLICT: ProblemDetailsSerializer(),
  43             status.HTTP_500_INTERNAL_SERVER_ERROR: "Internal error"
  44         }
  45     )
  46     @view_safe_call_with_log(logger=logger)
  47     def post(self, request, instanceid):
  48         logger.debug("ScaleVnfToLevel--post::> %s" % request.data)
  49
  50         scale_to_level_serializer = ScaleVnfToLevelRequestSerializer(data=request.data)
  51         if not scale_to_level_serializer.is_valid():
  52             raise NFLCMException(scale_to_level_serializer.errors)
  53
  54         job_id = JobUtil.create_job('NF', 'SCALE_TO_LEVEL', instanceid)
  55         JobUtil.add_job_status(job_id, 0, "SCALE_VNF_TO_LEVEL_READY")
  56         self.scale_pre_check(instanceid, job_id)
  57
  58         ScaleVnfToLevel(scale_to_level_serializer.data, instanceid, job_id).start()
  59
  60         response = Response(data={"jobId": job_id},
  61                             status=status.HTTP_202_ACCEPTED)
  62         return response
  63
  64     def scale_pre_check(self, nf_inst_id, job_id):
  65         vnf_insts = NfInstModel.objects.filter(nfinstid=nf_inst_id)
  66         if not vnf_insts.exists():
  67             raise NFLCMExceptionNotFound("VNF nf_inst_id does not exist.")
  68
  69         if vnf_insts[0].status != 'INSTANTIATED':
  70             raise NFLCMExceptionConflict("VNF instantiationState is not INSTANTIATED.")
  71
  72         vnf_insts.update(status=VNF_STATUS.SCALING)
  73         JobUtil.add_job_status(job_id, 15, 'Nf scaling to level pre-check finish')
  74         logger.info("Nf scaling to level pre-check finish")