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# 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
import traceback
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 catalog.packages.biz.ns_descriptor import NsDescriptor
from catalog.packages.serializers.create_nsd_info_request import CreateNsdInfoRequestSerializer
from catalog.packages.serializers.nsd_info import NsdInfoSerializer
from catalog.packages.serializers.nsd_infos import NsdInfosSerializer
from catalog.packages.views.common import validate_data
from catalog.pub.exceptions import CatalogException, ResourceNotFoundException
logger = logging.getLogger(__name__)
@swagger_auto_schema(
method='GET',
operation_description="Query a NSD",
request_body=no_body,
responses={
status.HTTP_200_OK: NsdInfoSerializer(),
status.HTTP_404_NOT_FOUND: 'NSDs do not exist',
status.HTTP_500_INTERNAL_SERVER_ERROR: "Internal error"
}
)
@swagger_auto_schema(
method='DELETE',
operation_description="Delete a NSD",
request_body=no_body,
responses={
status.HTTP_204_NO_CONTENT: "No content",
status.HTTP_500_INTERNAL_SERVER_ERROR: "Internal error"
}
)
@api_view(http_method_names=['GET', 'DELETE'])
def ns_info_rd(request, **kwargs):
nsd_info_id = kwargs.get("nsdInfoId")
if request.method == 'GET':
try:
data = NsDescriptor().query_single(nsd_info_id)
nsd_info = validate_data(data, NsdInfoSerializer)
return Response(data=nsd_info.data, status=status.HTTP_200_OK)
except ResourceNotFoundException as e:
logger.error(e.message)
error_data = {'error': e.message}
error_code = status.HTTP_404_NOT_FOUND
except Exception as e:
logger.error(e.message)
logger.error(traceback.format_exc())
error_data = {'error': 'Query of NSD(%s) failed.' % nsd_info_id}
error_code = status.HTTP_500_INTERNAL_SERVER_ERROR
return Response(data=error_data, status=error_code)
if request.method == 'DELETE':
try:
NsDescriptor().delete_single(nsd_info_id)
return Response(status=status.HTTP_204_NO_CONTENT)
except Exception as e:
logger.error(e.message)
logger.error(traceback.format_exc())
error_data = {'error': 'Deletion of NSD(%s) failed.' % nsd_info_id}
return Response(data=error_data, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
@swagger_auto_schema(
method='POST',
operation_description="Create a NSD",
request_body=CreateNsdInfoRequestSerializer(),
responses={
status.HTTP_201_CREATED: NsdInfoSerializer(),
status.HTTP_500_INTERNAL_SERVER_ERROR: "Internal error"
}
)
@swagger_auto_schema(
method='GET',
operation_description="Query multiple NSDs",
request_body=no_body,
responses={
status.HTTP_200_OK: NsdInfosSerializer(),
status.HTTP_500_INTERNAL_SERVER_ERROR: "Internal error"
}
)
@api_view(http_method_names=['POST', 'GET'])
def ns_descriptors_rc(request):
if request.method == 'POST':
try:
create_nsd_info_request = validate_data(request.data, CreateNsdInfoRequestSerializer)
data = NsDescriptor().create(create_nsd_info_request.data)
nsd_info = validate_data(data, NsdInfoSerializer)
return Response(data=nsd_info.data, status=status.HTTP_201_CREATED)
except Exception as e:
logger.error(e.message)
logger.error(traceback.format_exc())
error_data = {'error': 'Creating a NSD failed.'}
return Response(data=error_data, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
if request.method == 'GET':
try:
nsdId = request.query_params.get("nsdId", None)
data = NsDescriptor().query_multiple(nsdId)
nsd_infos = validate_data(data, NsdInfosSerializer)
return Response(data=nsd_infos.data, status=status.HTTP_200_OK)
except Exception as e:
logger.error(e.message)
logger.error(traceback.format_exc())
error_data = {'error': 'Query of multiple NSDs failed.'}
return Response(data=error_data, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
@swagger_auto_schema(
method='PUT',
operation_description="Upload NSD content",
request_body=no_body,
responses={
status.HTTP_204_NO_CONTENT: 'PNFD file',
status.HTTP_500_INTERNAL_SERVER_ERROR: "Internal error"
}
)
@swagger_auto_schema(
method='GET',
operation_description="Download NSD content",
request_body=no_body,
responses={
status.HTTP_204_NO_CONTENT: "No content",
status.HTTP_404_NOT_FOUND: 'NSD does not exist.',
status.HTTP_500_INTERNAL_SERVER_ERROR: "Internal error"
}
)
@api_view(http_method_names=['PUT', 'GET'])
def nsd_content_ru(request, **kwargs):
nsd_info_id = kwargs.get("nsdInfoId")
if request.method == 'PUT':
files = request.FILES.getlist('file')
try:
local_file_name = NsDescriptor().upload(nsd_info_id, files[0])
NsDescriptor().parse_nsd_and_save(nsd_info_id, local_file_name)
return Response(data=None, status=status.HTTP_204_NO_CONTENT)
except CatalogException as e:
NsDescriptor().handle_upload_failed(nsd_info_id)
logger.error(e.message)
error_data = {'error': e.message}
except Exception as e:
NsDescriptor().handle_upload_failed(nsd_info_id)
logger.error(e.message)
logger.error(traceback.format_exc())
error_data = {'error': 'Uploading NSD(%s) failed.' % nsd_info_id}
return Response(data=error_data, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
if request.method == 'GET':
try:
file_range = request.META.get('RANGE')
file_iterator = NsDescriptor().download(nsd_info_id, file_range)
return StreamingHttpResponse(file_iterator, status=status.HTTP_200_OK)
except ResourceNotFoundException as e:
logger.error(e.message)
error_data = {'error': e.message}
error_code = status.HTTP_404_NOT_FOUND
except CatalogException as e:
logger.error(e.message)
error_data = {'error': e.message}
error_code = status.HTTP_500_INTERNAL_SERVER_ERROR
except Exception as e:
logger.error(e.message)
logger.error(traceback.format_exc())
error_data = {'error': 'Downloading NSD(%s) failed.' % nsd_info_id}
error_code = status.HTTP_500_INTERNAL_SERVER_ERROR
return Response(data=error_data, status=error_code)
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