How to use the snakeviz.upload.storage_name function in snakeviz

if self.request.path.startswith('/viz/file/'):
            if self.settings['single_user_mode']:
                # Allow opening arbitrary files by full filesystem path
                # WARNING!!! Obviously this must be disabled by default
                # TODO: Some modicum of error handling here as well...

                json_path = '/json/file/%s.json' % profile_name

                if profile_name[0] != '/' and platform.system() != 'Windows':
                    profile_name = '/' + profile_name
                filename = os.path.abspath(profile_name)
            else:
                # TODO: Raise a 404 error here
                pass
        else:
            filename = upload.storage_name(profile_name)
            json_path = '/json/%s.json' % filename

        rows = stats_rows(filename)

        self.render('viz.html', profile_name=profile_name, json_path=json_path,
                    stats_rows=rows)