handlers.py

"""OpenAPI core contrib django handlers module"""
from django.http import JsonResponse

from openapi_core.exceptions import MissingRequiredParameter
from openapi_core.templating.media_types.exceptions import MediaTypeNotFound
from openapi_core.templating.paths.exceptions import (
    ServerNotFound, OperationNotFound, PathNotFound,
)
from openapi_core.validation.exceptions import InvalidSecurity


class DjangoOpenAPIErrorsHandler:

    OPENAPI_ERROR_STATUS = {
        MissingRequiredParameter: 400,
        ServerNotFound: 400,
        InvalidSecurity: 403,
        OperationNotFound: 405,
        PathNotFound: 404,
        MediaTypeNotFound: 415,
    }

    @classmethod
    def handle(cls, errors, req, resp=None):
        data_errors = [
            cls.format_openapi_error(err)
            for err in errors
        ]
        data = {
            'errors': data_errors,
        }
        data_error_max = max(data_errors, key=cls.get_error_status)
        return JsonResponse(data, status=data_error_max['status'])

    @classmethod
    def format_openapi_error(cls, error):
        return {
            'title': str(error),
            'status': cls.OPENAPI_ERROR_STATUS.get(error.__class__, 400),
            'class': str(type(error)),
        }

    @classmethod
    def get_error_status(cls, error):
        return error['status']