serve.py 文件源码

def handle(self, request):
        filename = request.match_info['filename']
        try:
            filepath = self._directory.joinpath(filename).resolve()
        except (ValueError, FileNotFoundError, OSError):
            pass
        else:
            if filepath.is_dir():
                request.match_info['filename'] = str(filepath.joinpath('index.html').relative_to(self._directory))
        status, length = 'unknown', ''
        try:
            response = await super().handle(request)
        except HTTPNotModified:
            status, length = 304, 0
            raise
        except HTTPNotFound:
            _404_msg = '404: Not Found\n\n' + _get_asset_content(self._asset_path)
            response = web.Response(body=_404_msg.encode('utf8'), status=404)
            status, length = response.status, response.content_length
        else:
            status, length = response.status, response.content_length
        finally:
            l = logger.info if status in {200, 304} else logger.warning
            l(' > %s %s %s %s', request.method, request.path, status, _fmt_size(length))
        return response