{exc_value}Traceback (most recent call last):
{frame_html}
{exc_name}: {exc_value}
while handling uri {uri}
File {0.filename}, line {0.lineno},
in {0.name}
{0.line}
The server encountered an internal error and cannot complete your request.
''' class SanicException(Exception): def __init__(self, message, status_code=None): super().__init__(message) if status_code is not None: self.status_code = status_code class NotFound(SanicException): status_code = 404 class InvalidUsage(SanicException): status_code = 400 class ServerError(SanicException): status_code = 500 class FileNotFound(NotFound): status_code = 404 def __init__(self, message, path, relative_url): super().__init__(message) self.path = path self.relative_url = relative_url class RequestTimeout(SanicException): status_code = 408 class PayloadTooLarge(SanicException): status_code = 413 class Handler: handlers = None def __init__(self): self.handlers = {} self.debug = False def _render_traceback_html(self, exception, request): exc_type, exc_value, tb = sys.exc_info() frames = extract_tb(tb) frame_html = [] for frame in frames: frame_html.append(TRACEBACK_LINE_HTML.format(frame)) return TRACEBACK_WRAPPER_HTML.format( style=TRACEBACK_STYLE, exc_name=exc_type.__name__, exc_value=exc_value, frame_html=''.join(frame_html), uri=request.url) def add(self, exception, handler): self.handlers[exception] = handler def response(self, request, exception): """ Fetches and executes an exception handler and returns a response object :param request: Request :param exception: Exception to handle :return: Response object """ handler = self.handlers.get(type(exception), self.default) try: response = handler(request=request, exception=exception) except: log.error(format_exc()) if self.debug: response_message = ( 'Exception raised in exception handler "{}" ' 'for uri: "{}"\n{}').format( handler.__name__, request.url, format_exc()) log.error(response_message) return text(response_message, 500) else: return text('An error occurred while handling an error', 500) return response def default(self, request, exception): log.error(format_exc()) if issubclass(type(exception), SanicException): return text( 'Error: {}'.format(exception), status=getattr(exception, 'status_code', 500)) elif self.debug: html_output = self._render_traceback_html(exception, request) response_message = ( 'Exception occurred while handling uri: "{}"\n{}'.format( request.url, format_exc())) log.error(response_message) return html(html_output, status=500) else: return html(INTERNAL_SERVER_ERROR_HTML, status=500)