import sys

sys.path.insert(0, "..")

import time

from opcua import ua, Server

if __name__ == "__main__":

# setup our server

server = Server()

server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")

# setup our own namespace, not really necessary but should as spec

uri = "http://examples.freeopcua.github.io"

idx = server.register_namespace(uri)

# get Objects node, this is where we should put our custom stuff

objects = server.get_objects_node()

# Example 1 - create a basic object

#-------------------------------------------------------------------------------

myobj = objects.add_object(idx, "MyObject")

#-------------------------------------------------------------------------------

# Example 2 - create a new object type and a instance of the new object type

#-------------------------------------------------------------------------------

types = server.get_node(ua.ObjectIds.BaseObjectType)

object_type_to_derive_from = server.get_root_node().get_child(["0:Types",

"0:ObjectTypes",

"0:BaseObjectType"])

mycustomobj_type = types.add_object_type(idx, "MyCustomObjectType")

var = mycustomobj_type.add_variable(0, "var_should_be_there_after_instantiate", 1.0) # demonstrates instantiate

var.set_modelling_rule(True) #if false it would not be instantiated

myobj = objects.add_object(idx, "MyCustomObjectA", mycustomobj_type.nodeid)

#-------------------------------------------------------------------------------

# Example 3 - import a new object from xml address space and create a instance of the new object type

#-------------------------------------------------------------------------------

# Import customobject type

server.import_xml('customobject.xml')

# get nodeid of custom object type by one of the following 3 ways:

# 1) Use node ID

# 2) Or Full path

# 3) Or As child from parent

myobject1_type_nodeid = ua.NodeId.from_string('ns=%d;i=2' % idx)

myobject2_type_nodeid = server.get_root_node().get_child(["0:Types", "0:ObjectTypes", "0:BaseObjectType", "%d:MyCustomObjectType" % idx]).nodeid

myobject3_type_nodeid = server.get_node(ua.ObjectIds.BaseObjectType).get_child(["%d:MyCustomObjectType" % idx]).nodeid

# populating our address space

myobj = objects.add_object(idx, "MyCustomObjectB", myobject3_type_nodeid)

#-------------------------------------------------------------------------------

# starting!

server.start()

try:

while True:

time.sleep(1)

finally:

# close connection, remove subcsriptions, etc

server.stop()