text: # Copyright 2018 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 django.http import StreamingHttpResponse
  from drf_yasg.utils import no_body, swagger_auto_schema
  from rest_framework import status
  from rest_framework.decorators import api_view
  from rest_framework.response import Response
  from drf_yasg import openapi
  
  from catalog.packages.biz.pnf_descriptor import PnfDescriptor
  from catalog.packages.const import TAG_PNFD_API, TAG_PARSER_API
  from catalog.packages.serializers.catalog_serializers import InternalErrorRequestSerializer
  from catalog.packages.serializers.catalog_serializers import ParseModelRequestSerializer
  from catalog.packages.serializers.catalog_serializers import ParseModelResponseSerializer
  from catalog.packages.serializers.create_pnfd_info_request import CreatePnfdInfoRequestSerializer
  from catalog.packages.serializers.pnfd_info import PnfdInfoSerializer
  from catalog.packages.serializers.pnfd_infos import PnfdInfosSerializer
  from catalog.packages.serializers.response import ProblemDetailsSerializer
  from catalog.packages.views.common import validate_data
  from catalog.pub.utils.syscomm import fun_name
  from catalog.pub.utils.values import ignore_case_get
  from .common import view_safe_call_with_log
  from catalog.swagger.views import EtsiCatalogFileAutoSchema
  
  logger = logging.getLogger(__name__)
  
  
  @swagger_auto_schema(
      method='GET',
      operation_description="Query a PNFD",
      tags=[TAG_PNFD_API],
      request_body=no_body,
      responses={
          status.HTTP_200_OK: PnfdInfoSerializer(),
          status.HTTP_404_NOT_FOUND: ProblemDetailsSerializer(),
          status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()
      }
  )
  @swagger_auto_schema(
      method='DELETE',
      operation_description="Delete a PNFD",
      tags=[TAG_PNFD_API],
      request_body=no_body,
      responses={
          status.HTTP_204_NO_CONTENT: "No content",
          status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()
      }
  )
  @api_view(http_method_names=['GET', 'DELETE'])
  @view_safe_call_with_log(logger=logger)
  def pnfd_info_rd(request, **kwargs):  # TODO
      pnfd_info_id = kwargs.get('pnfdInfoId')
      if request.method == 'GET':
          logger.debug("Query an individual PNF descriptor> %s" % request.data)
          data = PnfDescriptor().query_single(pnfd_info_id)
          pnfd_info = validate_data(data, PnfdInfoSerializer)
          return Response(data=pnfd_info.data, status=status.HTTP_200_OK)
  
      if request.method == 'DELETE':
          logger.debug("Delete an individual PNFD resource> %s" % request.data)
          PnfDescriptor().delete_single(pnfd_info_id)
          return Response(data=None, status=status.HTTP_204_NO_CONTENT)
  
  
  @swagger_auto_schema(
      method='POST',
      operation_description="Create a  PNFD",
      tags=[TAG_PNFD_API],
      request_body=CreatePnfdInfoRequestSerializer(),
      responses={
          status.HTTP_201_CREATED: PnfdInfoSerializer(),
          status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()
      }
  )
  @swagger_auto_schema(
      method='GET',
      operation_description="Query multiple PNFDs",
      tags=[TAG_PNFD_API],
      request_body=no_body,
      responses={
          status.HTTP_200_OK: PnfdInfosSerializer(),
          status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()
      }
  )
  @api_view(http_method_names=['POST', 'GET'])
  @view_safe_call_with_log(logger=logger)
  def pnf_descriptors_rc(request):
      if request.method == 'POST':
          create_pnfd_info_request = validate_data(request.data, CreatePnfdInfoRequestSerializer)
          data = PnfDescriptor().create(create_pnfd_info_request.data)
          validate_data(data, PnfdInfoSerializer)
          return Response(data=data, status=status.HTTP_201_CREATED)
  
      if request.method == 'GET':
          data = PnfDescriptor().query_multiple(request)
          validate_data(data, PnfdInfosSerializer)
          return Response(data=data, status=status.HTTP_200_OK)
  
  
  @swagger_auto_schema(
      method='PUT',
      operation_description="Upload PNFD content",
      tags=[TAG_PNFD_API],
      request_body=no_body,
      responses={
          status.HTTP_204_NO_CONTENT: "No content",
          status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()
      }
  )
  @swagger_auto_schema(
      auto_schema=EtsiCatalogFileAutoSchema,
      method='GET',
      operation_description="Fetch PNFD content",
      tags=[TAG_PNFD_API],
      request_body=no_body,
      responses={
          status.HTTP_200_OK: openapi.Response('PNFD file', schema=openapi.Schema(format=openapi.FORMAT_BINARY,
                                                                                  type=openapi.TYPE_STRING)),
          status.HTTP_404_NOT_FOUND: ProblemDetailsSerializer(),
          status.HTTP_500_INTERNAL_SERVER_ERROR: ProblemDetailsSerializer()
      },
      operation_id='Fetch PNFD content'
  )
  @api_view(http_method_names=['PUT', 'GET'])
  @view_safe_call_with_log(logger=logger)
  def pnfd_content_ru(request, **kwargs):
      pnfd_info_id = kwargs.get("pnfdInfoId")
      if request.method == 'PUT':
          files = request.FILES.getlist('file')
          try:
              local_file_name = PnfDescriptor().upload(files[0], pnfd_info_id)
              PnfDescriptor().parse_pnfd_and_save(pnfd_info_id, local_file_name)
              return Response(data=None, status=status.HTTP_204_NO_CONTENT)
          except Exception as e:
              PnfDescriptor().handle_upload_failed(pnfd_info_id)
              raise e
  
      if request.method == 'GET':
          file_iterator = PnfDescriptor().download(pnfd_info_id)
          return StreamingHttpResponse(file_iterator, status=status.HTTP_200_OK)
  
  
  @swagger_auto_schema(
      method='POST',
      operation_description="Parse PNF model",
      tags=[TAG_PARSER_API],
      request_body=ParseModelRequestSerializer,
      responses={
          status.HTTP_202_ACCEPTED: ParseModelResponseSerializer,
          status.HTTP_500_INTERNAL_SERVER_ERROR: InternalErrorRequestSerializer})
  @api_view(http_method_names=['POST'])
  def pnf_model_parser(request, *args, **kwargs):
      csar_id = ignore_case_get(request.data, "csarId")
      inputs = ignore_case_get(request.data, "inputs")
      logger.debug(
          "Enter %s, csar_id=%s, inputs=%s",
          fun_name(),
          csar_id,
          inputs)
      ret = PnfDescriptor().parse_pnfd(csar_id, inputs)
      logger.info("Leave %s, Return value is %s", fun_name(), ret)
      if ret[0] != 0:
          return Response(data={'error': ret[1]}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
      response = validate_data(ret[1], ParseModelResponseSerializer)
      return Response(data=response.data, status=status.HTTP_202_ACCEPTED)
  