class HelloServer:
def __init__(self, endpoint, name, model_filepath):
self.server = Server()
# This need to be imported at the start or else it will overwrite the data
self.server.import_xml(model_filepath)
self.server.set_endpoint(endpoint)
self.server.set_server_name(name)
objects = self.server.get_objects_node()
freeopcua_namespace = self.server.get_namespace_index(
"urn:freeopcua:python:server")
hellower = objects.get_child("0:Hellower")
hellower_say_hello = hellower.get_child("0:SayHello")
self.server.link_method(hellower_say_hello, say_hello_xml)
hellower.add_method(freeopcua_namespace, "SayHello2", say_hello,
[ua.VariantType.Boolean], [ua.VariantType.String])
hellower.add_method(freeopcua_namespace, "SayHelloArray",
say_hello_array, [ua.VariantType.Boolean],
[ua.VariantType.String])
def __enter__(self):
self.server.start()
return self.server
def __exit__(self, exc_type, exc_val, exc_tb):
self.server.stop()
async def init_server():
with open(r'../configuration.yml') as config_file:
config = yaml.load(config_file, Loader=yaml.FullLoader)
server = Server()
await server.init()
server.set_endpoint("opc.tcp://" + config['host'] + ":" +
str(config['port']))
namespace = await server.register_namespace(config['namespace'])
root_node = server.get_objects_node()
objects = await root_node.add_object(namespace, "BaseObjects")
server_rtt = await objects.add_variable(namespace, "server_rtt", None)
data_pool = await objects.add_variable(namespace, "data_pool", None)
await server_rtt.set_writable()
await data_pool.set_writable()
server_tests = Server_tests(server_rtt, data_pool)
server.link_method(root_node, server_tests.random_sort)
random_sort_method = await objects.add_method(
namespace, "random_sort", server_tests.random_sort,
[ua.VariantType.Int64, ua.VariantType.Float, ua.VariantType.Float],
[ua.VariantType.Float])
await server.start()
try:
print("OPC-UA server started")
while True:
await asyncio.sleep(1)
finally:
await server.stop()
