def __init__(self, url):
self.address = url
self.channel = grpc.insecure_channel(url)
self.stub = controller_pb2_grpc.ControllerServiceStub(self.channel)
def client_upgrade(self, address):
self.address = address
self.channel = grpc.insecure_channel(address)
self.stub = controller_pb2_grpc.ControllerServiceStub(self.channel)