federer.py 文件源码

def handle_with_logging(self):
    def process(processors):
        try:
            if processors:
                p, processors = processors[0], processors[1:]
                return p(lambda: process(processors))
            else:
                return self.handle()
        except web.HTTPError as e:
            logger.error("Web error: %s" % e)
            raise
        except (KeyboardInterrupt, SystemExit):
            raise
        except Exception as e:
            logger.critical("Unhandled exception raised",
                    traceback=traceback.format_exc())
            raise self.internalerror()

    # processors must be applied in the resvere order. (??)
    return process(self.processors)

# monkeypatch to allow error capturing