def get_instance_pid(cluster, environ, topology, instance, role=None):
  '''
  :param cluster:
  :param environ:
  :param topology:
  :param instance:
  :param role:
  :return:
  '''
  params = dict(
      cluster=cluster,
      environ=environ,
      topology=topology,
      instance=instance)

  if role is not None:
    params['role'] = role

  request_url = tornado.httputil.url_concat(create_url(PID_URL_FMT), params)

  raise tornado.gen.Return((yield fetch_url_as_json(request_url)))
def get_instance_pid(cluster, environ, topology, instance, role=None):
  '''
  :param cluster:
  :param environ:
  :param topology:
  :param instance:
  :param role:
  :return:
  '''
  params = dict(
      cluster=cluster,
      environ=environ,
      topology=topology,
      instance=instance)

  if role is not None:
    params['role'] = role

  request_url = tornado.httputil.url_concat(create_url(PID_URL_FMT), params)

  raise tornado.gen.Return((yield fetch_url_as_json(request_url)))
def get_instance_pid ( cluster , environ , topology , instance , role = None ) : params = dict ( cluster = cluster , environ = environ , topology = topology , instance = instance ) if role is not None : params [ 'role' ] = role request_url = tornado . httputil . url_concat ( create_url ( PID_URL_FMT ) , params ) raise tornado . gen . Return ( ( yield fetch_url_as_json ( request_url ) ) )
:param cluster:
  :param environ:
  :param topology:
  :param instance:
  :param role:
  :return:
: param cluster : : param environ : : param topology : : param instance : : param role : : return :