def test_reference_description(self):
rd = opcua.ReferenceDescription()
self.assertEqual(rd.browse_name, opcua.QualifiedName())
self.assertEqual(rd.is_forward, False)
self.assertEqual(rd.reference_type_id, opcua.NodeId())
self.assertEqual(rd.target_node_class, opcua.NodeClass.Unspecified)
self.assertEqual(rd.target_node_id, opcua.NodeId())
self.assertEqual(rd.target_node_type_definition, opcua.NodeId())
def test_add_numeric_node(self):
objects = self.opc.get_objects_node()
nid = opcua.NodeId(9999, 3)
qn = opcua.QualifiedName('AddNodeVar1', 3)
v1 = objects.add_variable(nid, qn, 0)
self.assertEqual(nid, v1.get_id())
self.assertEqual(qn, v1.get_browse_name())
def test_add_string_variable(self):
objects = self.opc.get_objects_node()
v = objects.add_variable('ns=3;s=stringid;', '3:stringnodefromstring', [68])
nid = opcua.NodeId('stringid', 3)
qn = opcua.QualifiedName('stringnodefromstring', 3)
self.assertEqual(nid, v.get_id())
self.assertEqual(qn, v.get_browse_name())
def test_add_string_node(self):
objects = self.opc.get_objects_node()
qn = opcua.QualifiedName('AddNodeVar2', 3)
nid = opcua.NodeId('AddNodeVar2Id', 3)
v2 = objects.add_variable(nid, qn, 0)
self.assertEqual(nid, v2.get_id())
self.assertEqual(qn, v2.get_browse_name())
def test_add_read_node(self):
objects = self.opc.get_objects_node()
o = objects.add_object('ns=2;i=102;', '2:AddReadObject')
nid = opcua.NodeId(102, 2)
self.assertEqual(o.get_id(), nid)
qn = opcua.QualifiedName('AddReadObject', 2)
self.assertEqual(o.get_browse_name(), qn)
def test_add_numeric_variable(self):
objects = self.opc.get_objects_node()
v = objects.add_variable('ns=3;i=888;', '3:numericnodefromstring', 99)
nid = opcua.NodeId(888, 3)
qn = opcua.QualifiedName('numericnodefromstring', 3)
self.assertEqual(nid, v.get_id())
self.assertEqual(qn, v.get_browse_name())
def test_add_string_array_variable(self):
objects = self.opc.get_objects_node()
v = objects.add_variable('ns=3;s=stringarrayid;', '9:stringarray', ['l', 'b'])
nid = opcua.NodeId('stringarrayid', 3)
qn = opcua.QualifiedName('stringarray', 9)
self.assertEqual(nid, v.get_id())
self.assertEqual(qn, v.get_browse_name())
val = v.get_value()
self.assertEqual(['l', 'b'], val)
def test_strrepr_nodeid(self):
nid = opcua.NodeId('ns=2;s=PLC1.Manufacturer;')
self.assertEqual(str(nid), 'ns=2;s=PLC1.Manufacturer;')
self.assertEqual(repr(nid), 'ns=2;s=PLC1.Manufacturer;')
def test_qualifiedstring_nodeid(self):
nid = opcua.NodeId('ns=2;s=PLC1.Manufacturer;')
self.assertEqual(nid.namespace_index, 2)
self.assertEqual(nid.identifier, 'PLC1.Manufacturer')
def test_numeric_nodeid(self):
nid = opcua.NodeId(999, 2)
self.assertEqual(nid.namespace_index, 2)
self.assertEqual(nid.identifier, 999)
self.assertTrue(nid.is_integer)
def test_string_nodeid(self):
nid = opcua.NodeId('titi', 1)
self.assertEqual(nid.namespace_index, 1)
self.assertEqual(nid.identifier, 'titi')
self.assertTrue(nid.is_string)
def test_zero_nodeid(self):
self.assertEqual(opcua.NodeId(), opcua.NodeId(0, 0))
self.assertEqual(opcua.NodeId(), opcua.NodeId('ns=0;i=0;'))
def test_equal_nodeid(self):
nid1 = opcua.NodeId(999, 2)
nid2 = opcua.NodeId(999, 2)
self.assertTrue(nid1 == nid2)
self.assertTrue(id(nid1) != id(nid2))
def test_objects(self):
objects = self.opc.get_objects_node()
self.assertEqual(opcua.QualifiedName('Objects', 0),
objects.get_browse_name())
nid = opcua.NodeId(85, 0)
self.assertEqual(nid, objects.get_id())
def test_root(self):
root = self.opc.get_root_node()
self.assertEqual(opcua.QualifiedName('Root', 0),
root.get_browse_name())
nid = opcua.NodeId(84, 0)
self.assertEqual(nid, root.get_id())
def test_write_value(self):
wv = opcua.WriteValue()
self.assertEqual(wv.node_id, opcua.NodeId())
self.assertEqual(wv.attribute_id, opcua.AttributeId())
self.assertEqual(wv.index_range, '')
self.assertEqual(wv.value.value, None)
def test_attribute_valueid(self):
avid = opcua.ReadValueId()
self.assertEqual(avid.node_id, opcua.NodeId())
self.assertEqual(avid.attribute_id, opcua.AttributeId())
self.assertEqual(avid.index_range, '')
self.assertEqual(avid.data_encoding, opcua.QualifiedName())
#self.c = Condition()
def data_change(self, handle, node, val, attr):
print("Python: New data change event", handle, node, val, attr)
self.val = val
if __name__ == "__main__":
client = opcua.Client(True)
client.connect("opc.tcp://utgaard:4841")
#s.connect("opc.tcp://192.168.56.101:48030")
try:
root = client.get_root_node()
print("I got root: ", root)
print("Childs are: ", root.get_children())
#getting node by id since nodejs seems not to support browsepath
myvar = client.get_node(opcua.NodeId("ns=1;i=1001"))
#myvar = root.get_child(["0:MyDevice"])
#print("yvar is: ", myvar,get_children())
#myvar = root.get_child(["0:MyDevice", "0:MyVariable1"])
print("myvar is: ", myvar)
sclt = SubClient()
sub = client.create_subscription(100, sclt)
handle = sub.subscribe_data_change(myvar)
print("Subscribe handle is: ", handle)
embed()
finally:
client.disconnect()
