text: # Copyright 2016 ZTE Corporation.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #         http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  import logging
  
  from drf_yasg.utils import swagger_auto_schema
  from rest_framework import status
  from rest_framework.response import Response
  from rest_framework.views import APIView
  from lcm.ns.biz.ns_manual_scale import NSManualScaleService
  from lcm.ns.serializers.sol.scale_ns_serializers import ScaleNsRequestSerializer
  from lcm.pub.utils.jobutil import JobUtil
  from lcm.jobs.enum import JOB_TYPE, JOB_ACTION
  from lcm.ns.const import NS_OCC_BASE_URI
  from lcm.pub.exceptions import BadRequestException
  from lcm.ns.serializers.sol.pub_serializers import ProblemDetailsSerializer
  from .common import view_safe_call_with_log
  
  logger = logging.getLogger(__name__)
  
  
  class ScaleNSView(APIView):
      @swagger_auto_schema(
          request_body=ScaleNsRequestSerializer(help_text="NS Scale"),
          responses={
              status.HTTP_202_ACCEPTED: "HTTP_202_ACCEPTED",
              status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()
          }
      )
      @view_safe_call_with_log(logger=logger)
      def post(self, request, ns_instance_id):
          logger.debug("Enter ScaleNSView::post %s, %s", request.data, ns_instance_id)
  
          req_serializer = ScaleNsRequestSerializer(data=request.data)
          if not req_serializer.is_valid():
              raise BadRequestException(req_serializer.errors)
  
          job_id = JobUtil.create_job(JOB_TYPE.NS, JOB_ACTION.MANUAL_SCALE, ns_instance_id)
  
          nsManualScaleService = NSManualScaleService(ns_instance_id, request.data, job_id)
          nsManualScaleService.start()
          response = Response(data={}, status=status.HTTP_202_ACCEPTED)
          logger.debug("Location: %s" % nsManualScaleService.occ_id)
          response["Location"] = NS_OCC_BASE_URI % nsManualScaleService.occ_id
          logger.debug("Leave ScaleNSView")
          return response
  