def __call__()

in api/base.py [0:0]

• 27 lines of code
• 9 McCabe index (conditional complexity)

    def __call__(self, func):
        """
        Helper for handling exceptions within the lambda function
        and returning back appropriate responses
        """
        assert func.__name__ not in self.__class__.registry, f"There are 2 routed functions called {func.__name__}"

        @functools.wraps(func)
        def wrapper(event, context=None):
            try:
                if event['body'] is None or isinstance(event['body'], str):
                    event['body'] = json.loads(event.get('body', None) or '{}')
                if not isinstance(event['body'], dict):
                    raise Exception
            except Exception:
                return Response(body=f"Malformed JSON: {event['body']}", status_code=400).to_response()
            try:
                response = func(event)
                if not isinstance(response, Response):
                    response = Response(body=response)
                return response.to_response()
            except ClientError as e:
                return Response(body=str(e), status_code=e.status_code).to_response()
            except Exception:
                return Response(
                    body=f"Internal Service Exception: {traceback.format_exc()}",
                    status_code=500
                ).to_response()
        wrapper.route = self
        self.__class__.registry[func.__name__] = wrapper
        setattr(self.__class__, func.__name__, wrapper)
        return wrapper