def get_cluster_topologies(cluster):
instance = tornado.ioloop.IOLoop.instance()<EOL>try:<EOL><INDENT>return instance.run_sync(lambda: API.get_cluster_topologies(cluster))<EOL><DEDENT>except Exception:<EOL><INDENT>Log.debug(traceback.format_exc())<EOL>raise<EOL><DEDENT>
Synced API call to get topologies under a cluster