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import uuid
import datetime, pytz
import logging
from opcua import ua
from opcua import uamethod
from opcua.ua import uaerrors
logger = logging.getLogger("opcua.common.xmlimporter")
logger.setLevel(logging.DEBUG)
logger = logging.getLogger("opcua.common.xmlparser")
logger.setLevel(logging.DEBUG)
@uamethod
def func(parent, value, string):
return value * 2
class XmlTests(object):
srv = None
opc = None # just to remove pylint warnings
assertEqual = dir
def test_xml_import(self):
self.opc.import_xml("tests/custom_nodes.xml")
o = self.opc.get_objects_node()
v = o.get_child(["1:MyXMLFolder", "1:MyXMLObject", "1:MyXMLVariable"])
val = v.get_value()
self.assertEqual(val, "StringValue")
node_path = ["Types", "DataTypes", "BaseDataType", "Enumeration",
"1:MyEnum", "0:EnumStrings"]
o = self.opc.get_root_node().get_child(node_path)
self.assertEqual(len(o.get_value()), 3)
# Check if method is imported
node_path = ["Types", "ObjectTypes", "BaseObjectType",
"1:MyObjectType", "1:MyMethod"]
o = self.opc.get_root_node().get_child(node_path)
self.assertEqual(len(o.get_referenced_nodes()), 4)
# Check if InputArgs are imported and can be read
node_path = ["Types", "ObjectTypes", "BaseObjectType",
"1:MyObjectType", "1:MyMethod", "InputArguments"]
o = self.opc.get_root_node().get_child(node_path)
input_arg = o.get_data_value().Value.Value[0]
self.assertEqual(input_arg.Name, 'Context')
def test_xml_import_additional_ns(self):
self.srv.register_namespace('http://placeholder.toincrease.nsindex') # if not already shift the new namespaces
# "tests/custom_nodes.xml" isn't created with namespaces in mind, provide new test file
self.opc.import_xml("tests/custom_nodesns.xml") # the ns=1 in to file now should be mapped to ns=2
ns = self.opc.get_namespace_index("http://examples.freeopcua.github.io/")
o = self.opc.get_objects_node()
o2 = o.get_child(["{0:d}:MyBaseObject".format(ns)])
self.assertIsNotNone(o2)
v1 = o.get_child(["{0:d}:MyBaseObject".format(ns), "{0:d}:MyVar".format(ns)])
self.assertIsNotNone(v1)
r1 = o2.get_references(refs=ua.ObjectIds.HasComponent)[0]
self.assertEqual(r1.NodeId.NamespaceIndex, ns)
r3 = v1.get_references(refs=ua.ObjectIds.HasComponent)[0]
self.assertEqual(r3.NodeId.NamespaceIndex, ns)
def test_xml_method(self):
self.opc.register_namespace("tititi")
self.opc.register_namespace("whatthefuck")
o = self.opc.nodes.objects.add_object(2, "xmlexportmethod")
m = o.add_method(2, "callme", func, [ua.VariantType.Double, ua.VariantType.String], [ua.VariantType.Float])
# set an arg dimension to a list to test list export
inputs = m.get_child("InputArguments")
val = inputs.get_value()
val[0].ArrayDimensions = [2, 2]
desc = "My nce description"
val[0].Description = ua.LocalizedText(desc)
inputs.set_value(val)
# get all nodes and export
nodes = [o, m]
nodes.extend(m.get_children())
self.opc.export_xml(nodes, "tmp_test_export.xml")
self.opc.delete_nodes(nodes)
self.opc.import_xml("tmp_test_export.xml")
# now see if our nodes are here
val = inputs.get_value()
self.assertEqual(len(val), 2)
self.assertEqual(val[0].ArrayDimensions, [2, 2])
self.assertEqual(val[0].Description.Text, desc)
def test_xml_vars(self):
self.opc.register_namespace("tititi")
self.opc.register_namespace("whatthexxx")
o = self.opc.nodes.objects.add_object(2, "xmlexportobj")
v = o.add_variable(3, "myxmlvar", 6.78, ua.VariantType.Double)
a = o.add_variable(3, "myxmlvar-array", [6, 1], ua.VariantType.UInt16)
a2 = o.add_variable(3, "myxmlvar-2dim", [[1, 2], [3, 4]], ua.VariantType.UInt32)
a3 = o.add_variable(3, "myxmlvar-2dim", [[]], ua.VariantType.ByteString)
nodes = [o, v, a, a2, a3]
self.opc.export_xml(nodes, "tmp_test_export-vars.xml")
self.opc.delete_nodes(nodes)
self.opc.import_xml("tmp_test_export-vars.xml")
self.assertEqual(v.get_value(), 6.78)
self.assertEqual(v.get_data_type(), ua.NodeId(ua.ObjectIds.Double))
self.assertEqual(a.get_data_type(), ua.NodeId(ua.ObjectIds.UInt16))
self.assertIn(a.get_value_rank(), (0, 1))
self.assertEqual(a.get_value(), [6, 1])
self.assertEqual(a2.get_value(), [[1, 2], [3, 4]])
self.assertEqual(a2.get_data_type(), ua.NodeId(ua.ObjectIds.UInt32))
self.assertIn(a2.get_value_rank(), (0, 2))
self.assertEqual(a2.get_attribute(ua.AttributeIds.ArrayDimensions).Value.Value, [2, 2])
# self.assertEqual(a3.get_value(), [[]]) # would require special code ...
self.assertEqual(a3.get_data_type(), ua.NodeId(ua.ObjectIds.ByteString))
self.assertIn(a3.get_value_rank(), (0, 2))
self.assertEqual(a3.get_attribute(ua.AttributeIds.ArrayDimensions).Value.Value, [1, 0])
def test_xml_ns(self):
"""
This test is far too complicated but catches a lot of things...
"""
ns_array = self.opc.get_namespace_array()
if len(ns_array) < 3:
self.opc.register_namespace("dummy_ns")
ref_ns = self.opc.register_namespace("ref_namespace")
new_ns = self.opc.register_namespace("my_new_namespace")
bname_ns = self.opc.register_namespace("bname_namespace")
o = self.opc.nodes.objects.add_object(0, "xmlns0")
o50 = self.opc.nodes.objects.add_object(50, "xmlns20")
o200 = self.opc.nodes.objects.add_object(200, "xmlns200")
onew = self.opc.nodes.objects.add_object(new_ns, "xmlns_new")
vnew = onew.add_variable(new_ns, "xmlns_new_var", 9.99)
o_no_export = self.opc.nodes.objects.add_object(ref_ns, "xmlns_parent")
v_no_parent = o_no_export.add_variable(new_ns, "xmlns_new_var_no_parent", 9.99)
o_bname = onew.add_object("ns={0};i=4000".format(new_ns), "{0}:BNAME".format(bname_ns))
nodes = [o, o50, o200, onew, vnew, v_no_parent, o_bname]
self.opc.export_xml(nodes, "tmp_test_export-ns.xml")
# delete node and change index og new_ns before re-importing
self.opc.delete_nodes(nodes)
ns_node = self.opc.get_node(ua.NodeId(ua.ObjectIds.Server_NamespaceArray))
nss = ns_node.get_value()
nss.remove("my_new_namespace")
# nss.remove("ref_namespace")
nss.remove("bname_namespace")
ns_node.set_value(nss)
new_ns = self.opc.register_namespace("my_new_namespace_offsett")
new_ns = self.opc.register_namespace("my_new_namespace")
new_nodes = self.opc.import_xml("tmp_test_export-ns.xml")
for i in [o, o50, o200]:
i.get_browse_name()
with self.assertRaises(uaerrors.BadNodeIdUnknown):
onew.get_browse_name()
# since my_new_namesspace2 is referenced byt a node it should have been reimported
nss = self.opc.get_namespace_array()
self.assertIn("bname_namespace", nss)
# get index of namespaces after import
new_ns = self.opc.register_namespace("my_new_namespace")
bname_ns = self.opc.register_namespace("bname_namespace")
onew.nodeid.NamespaceIndex = new_ns
onew.get_browse_name()
vnew2 = onew.get_children()[0]
self.assertEqual(new_ns, vnew2.nodeid.NamespaceIndex)
def test_xml_float(self):
o = self.opc.nodes.objects.add_variable(2, "xmlfloat", 5.67)
dtype = o.get_data_type()
dv = o.get_data_value()
self.opc.export_xml([o], "tmp_test_export-float.xml")
self.opc.delete_nodes([o])
new_nodes = self.opc.import_xml("tmp_test_export-float.xml")
o2 = self.opc.get_node(new_nodes[0])
self.assertEqual(o, o2)
self.assertEqual(dtype, o2.get_data_type())
self.assertEqual(dv.Value, o2.get_data_value().Value)
def test_xml_bool(self):
o = self.opc.nodes.objects.add_variable(2, "xmlbool", True)
self._test_xml_var_type(o, "bool")
def test_xml_string(self):
o = self.opc.nodes.objects.add_variable(2, "xmlstring", "mystring")
self._test_xml_var_type(o, "string")
def test_xml_string_with_null_description(self):
o = self.opc.nodes.objects.add_variable(2, "xmlstring", "mystring")
o.set_attribute(ua.AttributeIds.Description, ua.DataValue(None))
o2 = self._test_xml_var_type(o, "string")
self.assertEqual(o.get_description(), o2.get_description())
def test_xml_string_array(self):
o = self.opc.nodes.objects.add_variable(2, "xmlstringarray", ["mystring2", "mystring3"])
node2 = self._test_xml_var_type(o, "stringarray")
dv = node2.get_data_value()
def test_xml_guid(self):
o = self.opc.nodes.objects.add_variable(2, "xmlguid", uuid.uuid4())
self._test_xml_var_type(o, "guid")
def test_xml_guid_array(self):
o = self.opc.nodes.objects.add_variable(2, "xmlguid", [uuid.uuid4(), uuid.uuid4()])
self._test_xml_var_type(o, "guid_array")
def test_xml_datetime(self):
o = self.opc.nodes.objects.add_variable(3, "myxmlvar-dt", datetime.datetime.utcnow(), ua.VariantType.DateTime)
self._test_xml_var_type(o, "datetime")
def test_xml_datetime_array(self):
o = self.opc.nodes.objects.add_variable(3, "myxmlvar-array", [
datetime.datetime.now(),
datetime.datetime.utcnow(),
datetime.datetime.now(pytz.timezone("Asia/Tokyo"))
], ua.VariantType.DateTime)
self._test_xml_var_type(o, "datetime_array")
#def test_xml_qualifiedname(self):
# o = self.opc.nodes.objects.add_variable(2, "xmlltext", ua.QualifiedName("mytext", 5))
# self._test_xml_var_type(o, "qualified_name")
#def test_xml_qualifiedname_array(self):
# o = self.opc.nodes.objects.add_variable(2, "xmlltext_array", [ua.QualifiedName("erert", 5), ua.QualifiedName("erert33", 6)])
# self._test_xml_var_type(o, "qualified_name_array")
def test_xml_bytestring(self):
o = self.opc.nodes.objects.add_variable(2, "xmlltext", "mytext".encode("utf8"), ua.VariantType.ByteString)
self._test_xml_var_type(o, "bytestring")
def test_xml_bytestring_array(self):
o = self.opc.nodes.objects.add_variable(2, "xmlltext_array", ["mytext".encode("utf8"), "errsadf".encode("utf8")], ua.VariantType.ByteString)
self._test_xml_var_type(o, "bytestring_array")
def test_xml_localizedtext(self):
o = self.opc.nodes.objects.add_variable(2, "xmlltext", ua.LocalizedText("mytext"))
self._test_xml_var_type(o, "localized_text")
def test_xml_localizedtext_array(self):
o = self.opc.nodes.objects.add_variable(2, "xmlltext_array", [ua.LocalizedText("erert"), ua.LocalizedText("erert33")])
self._test_xml_var_type(o, "localized_text_array")
def test_xml_nodeid(self):
o = self.opc.nodes.objects.add_variable(2, "xmlnodeid", ua.NodeId("mytext", 1))
self._test_xml_var_type(o, "nodeid")
def test_xml_ext_obj(self):
arg = ua.Argument()
arg.DataType = ua.NodeId(ua.ObjectIds.Float)
arg.Description = ua.LocalizedText("Nice description")
arg.ArrayDimensions = [1, 2, 3]
arg.Name = "MyArg"
node = self.opc.nodes.objects.add_variable(2, "xmlexportobj2", arg)
node2 = self._test_xml_var_type(node, "ext_obj", test_equality=False)
arg2 = node2.get_value()
self.assertEqual(arg.Name, arg2.Name)
self.assertEqual(arg.ArrayDimensions, arg2.ArrayDimensions)
self.assertEqual(arg.Description, arg2.Description)
self.assertEqual(arg.DataType, arg2.DataType)
def test_xml_ext_obj_array(self):
arg = ua.Argument()
arg.DataType = ua.NodeId(ua.ObjectIds.Float)
arg.Description = ua.LocalizedText("Nice description")
arg.ArrayDimensions = [1, 2, 3]
arg.Name = "MyArg"
arg2 = ua.Argument()
arg2.DataType = ua.NodeId(ua.ObjectIds.Int32)
arg2.Description = ua.LocalizedText("Nice description2")
arg2.ArrayDimensions = [4, 5, 6]
arg2.Name = "MyArg2"
args = [arg, arg2]
node = self.opc.nodes.objects.add_variable(2, "xmlexportobj2", args)
node2 = self._test_xml_var_type(node, "ext_obj_array", test_equality=False)
readArgs = node2.get_value()
for i,arg in enumerate(readArgs):
self.assertEqual(args[i].Name, readArgs[i].Name)
self.assertEqual(args[i].ArrayDimensions, readArgs[i].ArrayDimensions)
self.assertEqual(args[i].Description, readArgs[i].Description)
self.assertEqual(args[i].DataType, readArgs[i].DataType)
def test_xml_enum(self):
o = self.opc.nodes.objects.add_variable(2, "xmlenum", 0, varianttype=ua.VariantType.Int32, datatype=ua.ObjectIds.ApplicationType)
self._test_xml_var_type(o, "enum")
def test_xml_enumvalues(self):
o = self.opc.nodes.objects.add_variable(2, "xmlenumvalues", 0, varianttype=ua.VariantType.UInt32, datatype=ua.ObjectIds.AttributeWriteMask)
self._test_xml_var_type(o, "enumvalues")
def test_xml_custom_uint32(self):
#t = self.opc.nodes. create_custom_data_type(2, 'MyCustomUint32', ua.ObjectIds.UInt32)
t = self.opc.get_node(ua.ObjectIds.UInt32).add_data_type(2, 'MyCustomUint32')
o = self.opc.nodes.objects.add_variable(2, "xmlcustomunit32", 0, varianttype=ua.VariantType.UInt32, datatype=t.nodeid)
self._test_xml_var_type(o, "cuint32")
def test_xml_var_nillable(self):
xml = """
<UANodeSet xmlns="http://opcfoundation.org/UA/2011/03/UANodeSet.xsd" xmlns:uax="http://opcfoundation.org/UA/2008/02/Types.xsd" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<NamespaceUris>
</NamespaceUris>
<Aliases>
<Alias Alias="Boolean">i=1</Alias>
<Alias Alias="String">i=12</Alias>
<Alias Alias="HasTypeDefinition">i=40</Alias>
<Alias Alias="HasComponent">i=47</Alias>
</Aliases>
<UAVariable BrowseName="2:xmlstring" DataType="String" NodeId="ns=2;s=test_xml.string.nillabel" ParentNodeId="i=85">
<DisplayName>xmlstring</DisplayName>
<Description>xmlstring</Description>
<References>
<Reference IsForward="false" ReferenceType="HasComponent">i=85</Reference>
<Reference ReferenceType="HasTypeDefinition">i=63</Reference>
</References>
<Value>
<uax:String></uax:String>
</Value>
</UAVariable>
<UAVariable BrowseName="2:xmlbool" DataType="Boolean" NodeId="ns=2;s=test_xml.bool.nillabel" ParentNodeId="i=85">
<DisplayName>xmlbool</DisplayName>
<Description>xmlbool</Description>
<References>
<Reference IsForward="false" ReferenceType="HasComponent">i=85</Reference>
<Reference ReferenceType="HasTypeDefinition">i=63</Reference>
</References>
<Value>
<uax:Boolean></uax:Boolean>
</Value>
</UAVariable>
</UANodeSet>
"""
_new_nodes = self.opc.import_xml(xmlstring=xml)
var_string = self.opc.get_node(ua.NodeId('test_xml.string.nillabel', 2))
var_bool = self.opc.get_node(ua.NodeId('test_xml.bool.nillabel', 2))
self.assertEqual(var_string.get_value(), None)
self.assertEqual(var_bool.get_value(), None)
def _test_xml_var_type(self, node, typename, test_equality=True):
dtype = node.get_data_type()
dv = node.get_data_value()
rank = node.get_value_rank()
dim = node.get_array_dimensions()
nclass = node.get_node_class()
path = "tmp_test_export-{0}.xml".format(typename)
self.opc.export_xml([node], path)
self.opc.delete_nodes([node])
new_nodes = self.opc.import_xml(path)
node2 = self.opc.get_node(new_nodes[0])
self.assertEqual(node, node2)
self.assertEqual(dtype, node2.get_data_type())
if test_equality:
print("DEBUG", node, dv, node2, node2.get_value())
self.assertEqual(dv.Value, node2.get_data_value().Value)
self.assertEqual(rank, node2.get_value_rank())
self.assertEqual(dim, node2.get_array_dimensions())
self.assertEqual(nclass, node2.get_node_class())
return node2
def test_xml_byte(self):
o = self.opc.nodes.objects.add_variable(2, "byte", 255, ua.VariantType.Byte)
dtype = o.get_data_type()
dv = o.get_data_value()
self.opc.export_xml([o], "export-byte.xml")
self.opc.delete_nodes([o])
new_nodes = self.opc.import_xml("export-byte.xml")
o2 = self.opc.get_node(new_nodes[0])
self.assertEqual(o, o2)
self.assertEqual(dtype, o2.get_data_type())
self.assertEqual(dv.Value, o2.get_data_value().Value)