def _get_url(shortcode): """Retrive url from cache or swift""" longurl = cache.get(shortcode) if longurl: return longurl else: cf = StandardClient( auth_url=app.config['CF_AUTH_URL'], auth_user=app.config['CF_USERNAME'], auth_key=app.config['CF_API_KEY'], snet=app.config['USE_SNET'], auth_cache_path=app.config['SWIFTLY_AUTH_CACHE_PATH'], eventlet=app.config['USE_EVENTLET'], region=app.config['CF_REGION'], verbose=_swiftlyv ) res = cf.head_object(app.config['CF_CONTAINER'], shortcode) if not res[0] == 200: return None else: longurl = res[2].get('x-object-meta-longurl', None) cache.set(shortcode, longurl) return longurl