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"""OpenAPI core contrib django handlers module"""
from typing import Any
from typing import Callable
from typing import Dict
from typing import Iterable
from typing import Type
from django.http import JsonResponse
from django.http.request import HttpRequest
from django.http.response import HttpResponse
from openapi_core.templating.media_types.exceptions import MediaTypeNotFound
from openapi_core.templating.paths.exceptions import OperationNotFound
from openapi_core.templating.paths.exceptions import PathNotFound
from openapi_core.templating.paths.exceptions import ServerNotFound
from openapi_core.templating.security.exceptions import SecurityNotFound
from openapi_core.unmarshalling.request.datatypes import RequestUnmarshalResult
class DjangoOpenAPIErrorsHandler:
OPENAPI_ERROR_STATUS: Dict[Type[BaseException], int] = {
ServerNotFound: 400,
SecurityNotFound: 403,
OperationNotFound: 405,
PathNotFound: 404,
MediaTypeNotFound: 415,
}
def __call__(
self,
errors: Iterable[Exception],
) -> JsonResponse:
data_errors = [self.format_openapi_error(err) for err in errors]
data = {
"errors": data_errors,
}
data_error_max = max(data_errors, key=self.get_error_status)
return JsonResponse(data, status=data_error_max["status"])
@classmethod
def format_openapi_error(cls, error: BaseException) -> Dict[str, Any]:
if error.__cause__ is not None:
error = error.__cause__
return {
"title": str(error),
"status": cls.OPENAPI_ERROR_STATUS.get(error.__class__, 400),
"type": str(type(error)),
}
@classmethod
def get_error_status(cls, error: Dict[str, Any]) -> str:
return str(error["status"])
class DjangoOpenAPIValidRequestHandler:
def __init__(self, req: HttpRequest, view: Callable[[Any], HttpResponse]):
self.req = req
self.view = view
def __call__(
self, request_unmarshal_result: RequestUnmarshalResult
) -> HttpResponse:
self.req.openapi = request_unmarshal_result
return self.view(self.req)
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