class ServerPython(object):
def __init__(self):
self._server = None
self.nodes = None
self.get_node = None
self.get_namespace_array = None
def get_server(self):
return self._server
def start_server(self, endpoint):
logger.info("Starting python-opcua server")
self._server = Server()
self._server.set_endpoint(endpoint)
self._server.set_server_name("OpcUa Modeler Server")
self.nodes = self._server.nodes
self.get_node = self._server.get_node
self.get_namespace_array = self._server.get_namespace_array
self.load_type_definitions = self._server.load_type_definitions
self.load_enums = self._server.load_enums
# now remove freeopcua namespace, not necessary when modeling and
# ensures correct idx for exported nodesets
ns_node = self._server.get_node(
ua.NodeId(ua.ObjectIds.Server_NamespaceArray))
nss = ns_node.read_value()
ns_node.write_value(nss[:1])
self._server.start()
def stop_server(self):
if self._server is not None:
self._server.stop()
self._server = None
self.get_node = None
self.get_namespace_array = None
def import_xml(self, path):
return self._server.import_xml(path)
def export_xml(self, nodes, uris, path):
exp = XmlExporter(self._server)
exp.build_etree(nodes, uris=uris)
exp.write_xml(path)
mydtvar = myobj.add_variable(idx, "MyDateTimeVar", datetime.utcnow())
mydtvar.set_writable() # Set MyVariable to be writable by clients
myarrayvar = myobj.add_variable(idx, "myarrayvar", [6.7, 7.9])
myarrayvar = myobj.add_variable(idx, "myStronglytTypedVariable",
ua.Variant([], ua.VariantType.UInt32))
myprop = myobj.add_property(idx, "myproperty", "I am a property")
mymethod = myobj.add_method(idx, "mymethod", func,
[ua.VariantType.Int64],
[ua.VariantType.Boolean])
multiply_node = myobj.add_method(
idx, "multiply", multiply,
[ua.VariantType.Int64, ua.VariantType.Int64],
[ua.VariantType.Int64])
# import some nodes from xml
server.import_xml("custom_nodes.xml")
# creating a default event object
# The event object automatically will have members for all events properties
# you probably want to create a custom event type, see other examples
myevgen = server.get_event_generator()
myevgen.event.Severity = 300
# starting!
with server:
print("Available loggers are: ",
logging.Logger.manager.loggerDict.keys())
vup = VarUpdater(mysin) # just a stupide class update a variable
vup.start()
# enable following if you want to subscribe to nodes on server side
mydtvar.set_writable() # Set MyVariable to be writable by clients
myarrayvar = myobj.add_variable(idx, "myarrayvar", [6.7, 7.9])
myarrayvar = myobj.add_variable(idx, "myStronglytTypedVariable",
ua.Variant([], ua.VariantType.UInt32))
myprop = myobj.add_property(idx, "myproperty", "I am a property")
mymethod = myobj.add_method(idx, "mymethod", func,
[ua.VariantType.Int64],
[ua.VariantType.Boolean])
multiply_node = myobj.add_method(
idx, "multiply", multiply,
[ua.VariantType.Int64, ua.VariantType.Int64],
[ua.VariantType.Int64])
# import some nodes from xml
server.import_xml(
"C:\Users\champouf\source\repos\opcua-asyncio\examples\sync\custom_nodes.xml"
)
# creating a default event object
# The event object automatically will have members for all events properties
# you probably want to create a custom event type, see other examples
myevgen = server.get_event_generator()
myevgen.event.Severity = 300
# starting!
with server:
print("Available loggers are: ",
logging.Logger.manager.loggerDict.keys())
vup = VarUpdater(mysin) # just a stupide class update a variable
vup.start()
