XmlImporter._add_variable_value() - Code Metrics - Inspection of "also export namespace of referenced nodes" - FreeOpcUa/python-opcua - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#327)

by Olivier

created 2016-10-15 19:35 UTC

XmlImporter._add_variable_value() C

↳ Parent: XmlImporter

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	56

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	7
dl	0
loc	21
rs	6.4705
c	1
b	0
f	0
ccs	0
cts	0
cp	0
crap	56

"""G
add node defined in XML to address space
format is the one from opc-ua specification
"""
import logging
import sys
from copy import copy

from opcua import ua
from opcua.common import xmlparser


def to_python(val, obj, attname):
    if isinstance(obj, ua.NodeId) and attname == "Identifier":
        raise RuntimeError("Error we should parse a NodeId here")
        return ua.NodeId.from_string(val)
    else:
        return xmlparser.ua_type_to_python(val, obj.ua_types[attname])


class XmlImporter(object):

    def __init__(self, server):
        self.logger = logging.getLogger(__name__)
        self.parser = None
        self.server = server
        self.namespaces = {}
        self.aliases = {}

    def _map_namespaces(self, namespaces_uris):
        """
        creates a mapping between the namespaces in the xml file and in the server.
        if not present the namespace is registered.
        """
        namespaces = {}
        for ns_index, ns_uri in enumerate(namespaces_uris):
            ns_server_index = self.server.register_namespace(ns_uri)
            namespaces[ns_index + 1] = (ns_server_index, ns_uri)
        return namespaces

    def _map_aliases(self, aliases):
        """
        maps the import aliases to the correct namespaces        
        """
        aliases_mapped = {}
        for alias, node_id in aliases.items():
            aliases_mapped[alias] = self._migrate_ns(self.to_nodeid(node_id))
        return aliases_mapped

    def import_xml(self, xmlpath):
        """
        import xml and return added nodes
        """
        self.logger.info("Importing XML file %s", xmlpath)
        self.parser = xmlparser.XMLParser(xmlpath)

        dnodes = self.parser.get_node_datas()
        dnodes = self.make_objects(dnodes)

        self.namespaces = self._map_namespaces(self.parser.get_used_namespaces())
        self.aliases = self._map_aliases(self.parser.get_aliases())

        nodes_parsed = self._sort_nodes_by_parentid(dnodes)

        nodes = []
        for nodedata in nodes_parsed:  # self.parser:
            if nodedata.nodetype == 'UAObject':
                node = self.add_object(nodedata)
            elif nodedata.nodetype == 'UAObjectType':
                node = self.add_object_type(nodedata)
            elif nodedata.nodetype == 'UAVariable':
                node = self.add_variable(nodedata)
            elif nodedata.nodetype == 'UAVariableType':
                node = self.add_variable_type(nodedata)
            elif nodedata.nodetype == 'UAReferenceType':
                node = self.add_reference_type(nodedata)
            elif nodedata.nodetype == 'UADataType':
                node = self.add_datatype(nodedata)
            elif nodedata.nodetype == 'UAMethod':
                node = self.add_method(nodedata)
            else:
                self.logger.warning("Not implemented node type: %s ", nodedata.nodetype)
                continue
            nodes.append(node)
        return nodes
    
    def make_objects(self, node_datas):
        new_nodes = []
        for ndata in node_datas:
            ndata.nodeid = ua.NodeId.from_string(ndata.nodeid)
            ndata.browsename = ua.QualifiedName.from_string(ndata.browsename)
            if ndata.parent:
                ndata.parent = ua.NodeId.from_string(ndata.parent)
            if ndata.parentlink:
                ndata.parentlink = self.to_nodeid(ndata.parentlink)
            if ndata.typedef:
                ndata.typedef = self.to_nodeid(ndata.typedef)
            new_nodes.append(ndata)
        return new_nodes

    def _migrate_ns(self, nodeid):
        """
        Check if the index of nodeid or browsename  given in the xml model file
        must be converted to a already existing namespace id based on the files
        namespace uri

        :returns: NodeId (str)
        """
        if nodeid.NamespaceIndex in self.namespaces:
            nodeid = copy(nodeid)
            nodeid.NamespaceIndex = self.namespaces[nodeid.NamespaceIndex][0]
        return nodeid

    def _get_node(self, obj):
        node = ua.AddNodesItem()
        node.RequestedNewNodeId = self._migrate_ns(obj.nodeid)
        node.BrowseName = self._migrate_ns(obj.browsename)
        node.NodeClass = getattr(ua.NodeClass, obj.nodetype[2:])
        if obj.parent:
            node.ParentNodeId = self._migrate_ns(obj.parent)
        if obj.parentlink:
            node.ReferenceTypeId = self._migrate_ns(obj.parentlink)
        if obj.typedef:
            node.TypeDefinition = self._migrate_ns(obj.typedef)
        return node

    def to_nodeid(self, nodeid):
        if isinstance(nodeid, ua.NodeId):
            return nodeid
        elif not nodeid:
            return ua.NodeId(ua.ObjectIds.String)
        elif "=" in nodeid:
            return ua.NodeId.from_string(nodeid)
        elif hasattr(ua.ObjectIds, nodeid):
            return ua.NodeId(getattr(ua.ObjectIds, nodeid))
        else:
            if nodeid in self.aliases:
                return self.aliases[nodeid]
            else:
                return ua.NodeId(getattr(ua.ObjectIds, nodeid))

    def add_object(self, obj):
        node = self._get_node(obj)
        attrs = ua.ObjectAttributes()
        if obj.desc:
            attrs.Description = ua.LocalizedText(obj.desc)

        attrs.DisplayName = ua.LocalizedText(obj.displayname)
        attrs.EventNotifier = obj.eventnotifier
        node.NodeAttributes = attrs
        res = self.server.iserver.isession.add_nodes([node])
        self._add_refs(obj)
        res[0].StatusCode.check()
        return res[0].AddedNodeId

    def add_object_type(self, obj):
        node = self._get_node(obj)
        attrs = ua.ObjectTypeAttributes()
        if obj.desc:
            attrs.Description = ua.LocalizedText(obj.desc)

        attrs.DisplayName = ua.LocalizedText(obj.displayname)
        attrs.IsAbstract = obj.abstract
        node.NodeAttributes = attrs
        res = self.server.iserver.isession.add_nodes([node])
        self._add_refs(obj)
        res[0].StatusCode.check()
        return res[0].AddedNodeId

    def add_variable(self, obj):
        node = self._get_node(obj)
        attrs = ua.VariableAttributes()
        if obj.desc:
            attrs.Description = ua.LocalizedText(obj.desc)
        attrs.DisplayName = ua.LocalizedText(obj.displayname)
        attrs.DataType = self.to_nodeid(obj.datatype)
        if obj.value is not None:
            attrs.Value = self._add_variable_value(obj,)
        if obj.rank:
            attrs.ValueRank = obj.rank
        if obj.accesslevel:
            attrs.AccessLevel = obj.accesslevel
        if obj.useraccesslevel:
            attrs.UserAccessLevel = obj.useraccesslevel
        if obj.minsample:
            attrs.MinimumSamplingInterval = obj.minsample
        if obj.dimensions:
            attrs.ArrayDimensions = obj.dimensions
        node.NodeAttributes = attrs
        res = self.server.iserver.isession.add_nodes([node])
        self._add_refs(obj)
        res[0].StatusCode.check()
        return res[0].AddedNodeId

    def _make_ext_obj(sefl, obj):
        ext = getattr(ua, obj.objname)()
        for name, val in obj.body:
            if type(val) is str:
                raise Exception("Error val should a dict", name, val)
            else:
                for attname, v in val:
                    # tow possible values:
                    # either we get value directly
                    # or a dict if it s an object or a list
                    if type(v) is str:
                        setattr(ext, attname, to_python(v, ext, attname))
                    else:
                        # so we habve either an object or a list...
                        obj2 = getattr(ext, attname)
                        if isinstance(obj2, ua.NodeId):
                            for attname2, v2 in v:
                                if attname2 == "Identifier":
                                    obj2 = ua.NodeId.from_string(v2)
                                    setattr(ext, attname, obj2)
                                    break
                        elif not isinstance(obj2, ua.NodeId) and not hasattr(obj2, "ua_types"):
                            # we probably have a list
                            my_list = []
                            for vtype, v2 in v:
                                my_list.append(xmlparser.ua_type_to_python(v2, vtype))
                            setattr(ext, attname, my_list)
                        else:
                            for attname2, v2 in v:
                                setattr(obj2, attname2, to_python(v2, obj2, attname2))
                            setattr(ext, attname, obj2)
        return ext

    def _add_variable_value(self, obj):
        """
        Returns the value for a Variable based on the objects valuetype. 
        """
        if obj.valuetype == 'ListOfExtensionObject':
            values = []
            for ext in obj.value:
                extobj = self._make_ext_obj(ext)
                values.append(extobj)
            return values
        elif obj.valuetype.startswith("ListOf"):
            vtype = obj.valuetype[6:]
            if hasattr(ua.ua_binary.Primitives, vtype):
                return ua.Variant(obj.value, getattr(ua.VariantType, vtype))
            else:
                return [getattr(ua, vtype)(v) for v in obj.value]
        elif obj.valuetype == 'ExtensionObject':
            extobj = self._make_ext_obj(obj.value)
            return ua.Variant(extobj, getattr(ua.VariantType, obj.valuetype))
        else:
            return ua.Variant(obj.value, getattr(ua.VariantType, obj.valuetype))

    def add_variable_type(self, obj):
        node = self._get_node(obj)
        attrs = ua.VariableTypeAttributes()
        if obj.desc:
            attrs.Description = ua.LocalizedText(obj.desc)
        attrs.DisplayName = ua.LocalizedText(obj.displayname)
        attrs.DataType = self.to_nodeid(obj.datatype)

        if obj.value and len(obj.value) == 1:
            attrs.Value = obj.value[0]
        if obj.rank:
            attrs.ValueRank = obj.rank
        if obj.abstract:
            attrs.IsAbstract = obj.abstract
        if obj.dimensions:
            attrs.ArrayDimensions = obj.dimensions
        node.NodeAttributes = attrs
        res = self.server.iserver.isession.add_nodes([node])
        self._add_refs(obj)
        res[0].StatusCode.check()
        return res[0].AddedNodeId

    def add_method(self, obj):
        node = self._get_node(obj)
        attrs = ua.MethodAttributes()
        if obj.desc:
            attrs.Description = ua.LocalizedText(obj.desc)
        attrs.DisplayName = ua.LocalizedText(obj.displayname)
        if obj.accesslevel:

            attrs.AccessLevel = obj.accesslevel
        if obj.useraccesslevel:
            attrs.UserAccessLevel = obj.useraccesslevel
        if obj.minsample:
            attrs.MinimumSamplingInterval = obj.minsample
        if obj.dimensions:
            attrs.ArrayDimensions = obj.dimensions
        node.NodeAttributes = attrs
        res = self.server.iserver.isession.add_nodes([node])
        self._add_refs(obj)
        res[0].StatusCode.check()
        return res[0].AddedNodeId

    def add_reference_type(self, obj):
        node = self._get_node(obj)
        attrs = ua.ReferenceTypeAttributes()
        if obj.desc:
            attrs.Description = ua.LocalizedText(obj.desc)
        attrs.DisplayName = ua.LocalizedText(obj.displayname)
        if obj. inversename:
            attrs.InverseName = ua.LocalizedText(obj.inversename)
        if obj.abstract:
            attrs.IsAbstract = obj.abstract
        if obj.symmetric:
            attrs.Symmetric = obj.symmetric
        node.NodeAttributes = attrs
        res = self.server.iserver.isession.add_nodes([node])
        self._add_refs(obj)
        res[0].StatusCode.check()
        return res[0].AddedNodeId

    def add_datatype(self, obj):
        node = self._get_node(obj)
        attrs = ua.DataTypeAttributes()
        if obj.desc:
            attrs.Description = ua.LocalizedText(obj.desc)
        attrs.DisplayName = ua.LocalizedText(obj.displayname)
        if obj.abstract:

            attrs.IsAbstract = obj.abstract
        node.NodeAttributes = attrs
        res = self.server.iserver.isession.add_nodes([node])
        self._add_refs(obj)
        res[0].StatusCode.check()
        return res[0].AddedNodeId

    def _add_refs(self, obj):
        if not obj.refs:
            return
        refs = []
        for data in obj.refs:
            ref = ua.AddReferencesItem()
            ref.IsForward = True
            ref.ReferenceTypeId = self.to_nodeid(data.reftype)
            ref.SourceNodeId = self._migrate_ns(obj.nodeid)
            ref.TargetNodeClass = ua.NodeClass.DataType
            ref.TargetNodeId = self._migrate_ns(self.to_nodeid(data.target))
            refs.append(ref)
        self.server.iserver.isession.add_references(refs)

    def _sort_nodes_by_parentid(self, ndatas):
        """
        Sort the list of nodes according theire parent node in order to respect
        the depency between nodes.

        :param nodes: list of NodeDataObjects
        :returns: list of sorted nodes
        """
        _ndatas = list(ndatas)
        # list of node ids that are already sorted / inserted
        sorted_nodes_ids = []
        # list of sorted nodes (i.e. XML Elements)
        sorted_ndatas = []
        all_node_ids = [data.nodeid for data in ndatas]
        # list of namespace indexes that are relevant for this import
        # we can only respect ordering nodes for namespaces indexes that
        # are defined in the xml file itself. Thus we assume that all other
        # references namespaces are already known to the server and should
        # not create any dependency problems (like "NodeNotFound")
        relevant_namespaces = [str(ns) for ns in self.namespaces.keys()]
        while len(_ndatas) > 0:
            pop_nodes = []
            for ndata in _ndatas:
                # Insert nodes that
                #   (1) have no parent / parent_ns is None (e.g. namespace 0)
                #   (2) ns is not in list of relevant namespaces
                if ndata.nodeid.NamespaceIndex not in relevant_namespaces or \
                        ndata.parent is None or \
                        ndata.parent not in all_node_ids:
                    sorted_ndatas.append(ndata)
                    sorted_nodes_ids.append(ndata.nodeid)
                    pop_nodes.append(ndata)
                else:
                    # Check if the nodes parent is already in the list of
                    # inserted nodes
                    if ndata.parent in sorted_nodes_ids:
                        sorted_ndatas.append(ndata)
                        sorted_nodes_ids.append(ndata.nodeid)
                        pop_nodes.append(ndata)

            # Remove inserted nodes from the list
            for ndata in pop_nodes:
                _ndatas.pop(_ndatas.index(ndata))
        return sorted_ndatas


1			"""G
2			add node defined in XML to address space
3			format is the one from opc-ua specification
4			"""
5	1		import logging
6			import sys
7			from copy import copy
8	1
9	1		from opcua import ua
10			from opcua.common import xmlparser
11
12	1
13			def to_python(val, obj, attname):
14	1		if isinstance(obj, ua.NodeId) and attname == "Identifier":
15	1		raise RuntimeError("Error we should parse a NodeId here")
16	1		return ua.NodeId.from_string(val)
17	1		else:
18			return xmlparser.ua_type_to_python(val, obj.ua_types[attname])
19	1
20	1
21	1		class XmlImporter(object):
22	1
23	1		def __init__(self, server):
24	1		self.logger = logging.getLogger(__name__)
25	1		self.parser = None
26			self.server = server
27	1		self.namespaces = {}
28	1		self.aliases = {}
29
30			def _map_namespaces(self, namespaces_uris):
31			"""
32			creates a mapping between the namespaces in the xml file and in the server.
33			if not present the namespace is registered.
34			"""
35			namespaces = {}
36			for ns_index, ns_uri in enumerate(namespaces_uris):
37			ns_server_index = self.server.register_namespace(ns_uri)
38			namespaces[ns_index + 1] = (ns_server_index, ns_uri)
39			return namespaces
40	1
41	1		def _map_aliases(self, aliases):
42	1		"""
43	1		maps the import aliases to the correct namespaces
44	1		"""
45	1		aliases_mapped = {}
46	1		for alias, node_id in aliases.items():
47	1		aliases_mapped[alias] = self._migrate_ns(self.to_nodeid(node_id))
48	1		return aliases_mapped
49	1
50	1		def import_xml(self, xmlpath):
51	1		"""
52			import xml and return added nodes
53	1		"""
54	1		self.logger.info("Importing XML file %s", xmlpath)
55			self.parser = xmlparser.XMLParser(xmlpath)
56	1
57			dnodes = self.parser.get_node_datas()
58			dnodes = self.make_objects(dnodes)
59	1
60			self.namespaces = self._map_namespaces(self.parser.get_used_namespaces())
61	1		self.aliases = self._map_aliases(self.parser.get_aliases())
62	1
63	1		nodes_parsed = self._sort_nodes_by_parentid(dnodes)
64
65			nodes = []
66	1		for nodedata in nodes_parsed: # self.parser:
67			if nodedata.nodetype == 'UAObject':
68	1		node = self.add_object(nodedata)
69			elif nodedata.nodetype == 'UAObjectType':
70	1		node = self.add_object_type(nodedata)
71	1		elif nodedata.nodetype == 'UAVariable':
72	1		node = self.add_variable(nodedata)
73	1		elif nodedata.nodetype == 'UAVariableType':
74	1		node = self.add_variable_type(nodedata)
75	1		elif nodedata.nodetype == 'UAReferenceType':
76	1		node = self.add_reference_type(nodedata)
77	1		elif nodedata.nodetype == 'UADataType':
78	1		node = self.add_datatype(nodedata)
79	1		elif nodedata.nodetype == 'UAMethod':
80			node = self.add_method(nodedata)
81	1		else:
82			self.logger.warning("Not implemented node type: %s ", nodedata.nodetype)
83			continue
84			nodes.append(node)
85			return nodes
86
87			def make_objects(self, node_datas):
88			new_nodes = []
89			for ndata in node_datas:
90			ndata.nodeid = ua.NodeId.from_string(ndata.nodeid)
91			ndata.browsename = ua.QualifiedName.from_string(ndata.browsename)
92	1		if ndata.parent:
93	1		ndata.parent = ua.NodeId.from_string(ndata.parent)
94	1		if ndata.parentlink:
95	1		ndata.parentlink = self.to_nodeid(ndata.parentlink)
96			if ndata.typedef:
97	1		ndata.typedef = self.to_nodeid(ndata.typedef)
98	1		new_nodes.append(ndata)
99			return new_nodes
100	1
101	1		def _migrate_ns(self, nodeid):
102	1		"""
103	1		Check if the index of nodeid or browsename given in the xml model file
104	1		must be converted to a already existing namespace id based on the files
105			namespace uri
106	1
107			:returns: NodeId (str)
108	1		"""
109			if nodeid.NamespaceIndex in self.namespaces:
110	1		nodeid = copy(nodeid)
111			nodeid.NamespaceIndex = self.namespaces[nodeid.NamespaceIndex][0]
112	1		return nodeid
113	1
114	1		def _get_node(self, obj):
115			node = ua.AddNodesItem()
116	1		node.RequestedNewNodeId = self._migrate_ns(obj.nodeid)
117			node.BrowseName = self._migrate_ns(obj.browsename)
118			node.NodeClass = getattr(ua.NodeClass, obj.nodetype[2:])
119			if obj.parent:
120			node.ParentNodeId = self._migrate_ns(obj.parent)
121			if obj.parentlink:
122			node.ReferenceTypeId = self._migrate_ns(obj.parentlink)
123			if obj.typedef:
124			node.TypeDefinition = self._migrate_ns(obj.typedef)
125			return node
126
127			def to_nodeid(self, nodeid):
128			if isinstance(nodeid, ua.NodeId):
129			return nodeid
130			elif not nodeid:
131			return ua.NodeId(ua.ObjectIds.String)
132			elif "=" in nodeid:
133			return ua.NodeId.from_string(nodeid)
134			elif hasattr(ua.ObjectIds, nodeid):
135	1		return ua.NodeId(getattr(ua.ObjectIds, nodeid))
136			else:
137			if nodeid in self.aliases:
138			return self.aliases[nodeid]
139			else:
140			return ua.NodeId(getattr(ua.ObjectIds, nodeid))
141
142			def add_object(self, obj):
143			node = self._get_node(obj)
144			attrs = ua.ObjectAttributes()
145			if obj.desc:
146		View Code Duplication	attrs.Description = ua.LocalizedText(obj.desc)
			0 ignored issues – show Duplication introduced 2016-10-15 08:32 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
147			attrs.DisplayName = ua.LocalizedText(obj.displayname)
148			attrs.EventNotifier = obj.eventnotifier
149			node.NodeAttributes = attrs
150			res = self.server.iserver.isession.add_nodes([node])
151			self._add_refs(obj)
152			res[0].StatusCode.check()
153	1		return res[0].AddedNodeId
154
155			def add_object_type(self, obj):
156			node = self._get_node(obj)
157			attrs = ua.ObjectTypeAttributes()
158			if obj.desc:
159		View Code Duplication	attrs.Description = ua.LocalizedText(obj.desc)
			0 ignored issues – show Duplication introduced 2016-09-10 07:31 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
160			attrs.DisplayName = ua.LocalizedText(obj.displayname)
161			attrs.IsAbstract = obj.abstract
162			node.NodeAttributes = attrs
163			res = self.server.iserver.isession.add_nodes([node])
164			self._add_refs(obj)
165			res[0].StatusCode.check()
166			return res[0].AddedNodeId
167
168			def add_variable(self, obj):
169	1		node = self._get_node(obj)
170			attrs = ua.VariableAttributes()
171			if obj.desc:
172			attrs.Description = ua.LocalizedText(obj.desc)
173			attrs.DisplayName = ua.LocalizedText(obj.displayname)
174			attrs.DataType = self.to_nodeid(obj.datatype)
175			if obj.value is not None:
176			attrs.Value = self._add_variable_value(obj,)
177			if obj.rank:
178			attrs.ValueRank = obj.rank
179			if obj.accesslevel:
180			attrs.AccessLevel = obj.accesslevel
181	1		if obj.useraccesslevel:
182	1		attrs.UserAccessLevel = obj.useraccesslevel
183	1		if obj.minsample:
184			attrs.MinimumSamplingInterval = obj.minsample
185			if obj.dimensions:
186			attrs.ArrayDimensions = obj.dimensions
187			node.NodeAttributes = attrs
188			res = self.server.iserver.isession.add_nodes([node])
189			self._add_refs(obj)
190			res[0].StatusCode.check()
191			return res[0].AddedNodeId
192
193			def _make_ext_obj(sefl, obj):
194			ext = getattr(ua, obj.objname)()
195			for name, val in obj.body:
196			if type(val) is str:
197			raise Exception("Error val should a dict", name, val)
198			else:
199			for attname, v in val:
200			# tow possible values:
201			# either we get value directly
202			# or a dict if it s an object or a list
203			if type(v) is str:
204			setattr(ext, attname, to_python(v, ext, attname))
205			else:
206			# so we habve either an object or a list...
207			obj2 = getattr(ext, attname)
208			if isinstance(obj2, ua.NodeId):
209			for attname2, v2 in v:
210			if attname2 == "Identifier":
211			obj2 = ua.NodeId.from_string(v2)
212			setattr(ext, attname, obj2)
213			break
214			elif not isinstance(obj2, ua.NodeId) and not hasattr(obj2, "ua_types"):
215			# we probably have a list
216			my_list = []
217			for vtype, v2 in v:
218			my_list.append(xmlparser.ua_type_to_python(v2, vtype))
219			setattr(ext, attname, my_list)
220			else:
221			for attname2, v2 in v:
222			setattr(obj2, attname2, to_python(v2, obj2, attname2))
223			setattr(ext, attname, obj2)
224			return ext
225
226			def _add_variable_value(self, obj):
227			"""
228			Returns the value for a Variable based on the objects valuetype.
229			"""
230			if obj.valuetype == 'ListOfExtensionObject':
231			values = []
232			for ext in obj.value:
233			extobj = self._make_ext_obj(ext)
234			values.append(extobj)
235			return values
236			elif obj.valuetype.startswith("ListOf"):
237			vtype = obj.valuetype[6:]
238			if hasattr(ua.ua_binary.Primitives, vtype):
239			return ua.Variant(obj.value, getattr(ua.VariantType, vtype))
240			else:
241			return [getattr(ua, vtype)(v) for v in obj.value]
242			elif obj.valuetype == 'ExtensionObject':
243			extobj = self._make_ext_obj(obj.value)
244			return ua.Variant(extobj, getattr(ua.VariantType, obj.valuetype))
245			else:
246			return ua.Variant(obj.value, getattr(ua.VariantType, obj.valuetype))
247
248			def add_variable_type(self, obj):
249			node = self._get_node(obj)
250			attrs = ua.VariableTypeAttributes()
251			if obj.desc:
252			attrs.Description = ua.LocalizedText(obj.desc)
253			attrs.DisplayName = ua.LocalizedText(obj.displayname)
254		View Code Duplication	attrs.DataType = self.to_nodeid(obj.datatype)
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255			if obj.value and len(obj.value) == 1:
256			attrs.Value = obj.value[0]
257			if obj.rank:
258			attrs.ValueRank = obj.rank
259			if obj.abstract:
260			attrs.IsAbstract = obj.abstract
261			if obj.dimensions:
262			attrs.ArrayDimensions = obj.dimensions
263			node.NodeAttributes = attrs
264			res = self.server.iserver.isession.add_nodes([node])
265			self._add_refs(obj)
266			res[0].StatusCode.check()
267			return res[0].AddedNodeId
268
269			def add_method(self, obj):
270			node = self._get_node(obj)
271			attrs = ua.MethodAttributes()
272			if obj.desc:
273			attrs.Description = ua.LocalizedText(obj.desc)
274			attrs.DisplayName = ua.LocalizedText(obj.displayname)
275		View Code Duplication	if obj.accesslevel:
			0 ignored issues – show Duplication introduced 2016-10-15 19:41 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
276			attrs.AccessLevel = obj.accesslevel
277			if obj.useraccesslevel:
278			attrs.UserAccessLevel = obj.useraccesslevel
279			if obj.minsample:
280			attrs.MinimumSamplingInterval = obj.minsample
281			if obj.dimensions:
282			attrs.ArrayDimensions = obj.dimensions
283			node.NodeAttributes = attrs
284			res = self.server.iserver.isession.add_nodes([node])
285			self._add_refs(obj)
286			res[0].StatusCode.check()
287			return res[0].AddedNodeId
288
289			def add_reference_type(self, obj):
290			node = self._get_node(obj)
291			attrs = ua.ReferenceTypeAttributes()
292			if obj.desc:
293			attrs.Description = ua.LocalizedText(obj.desc)
294			attrs.DisplayName = ua.LocalizedText(obj.displayname)
295			if obj. inversename:
296			attrs.InverseName = ua.LocalizedText(obj.inversename)
297			if obj.abstract:
298			attrs.IsAbstract = obj.abstract
299			if obj.symmetric:
300			attrs.Symmetric = obj.symmetric
301			node.NodeAttributes = attrs
302			res = self.server.iserver.isession.add_nodes([node])
303			self._add_refs(obj)
304			res[0].StatusCode.check()
305			return res[0].AddedNodeId
306
307			def add_datatype(self, obj):
308			node = self._get_node(obj)
309			attrs = ua.DataTypeAttributes()
310			if obj.desc:
311			attrs.Description = ua.LocalizedText(obj.desc)
312			attrs.DisplayName = ua.LocalizedText(obj.displayname)
313		View Code Duplication	if obj.abstract:
			0 ignored issues – show Duplication introduced 2016-08-10 08:32 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
314			attrs.IsAbstract = obj.abstract
315			node.NodeAttributes = attrs
316			res = self.server.iserver.isession.add_nodes([node])
317			self._add_refs(obj)
318			res[0].StatusCode.check()
319			return res[0].AddedNodeId
320
321			def _add_refs(self, obj):
322			if not obj.refs:
323			return
324			refs = []
325			for data in obj.refs:
326			ref = ua.AddReferencesItem()
327			ref.IsForward = True
328			ref.ReferenceTypeId = self.to_nodeid(data.reftype)
329			ref.SourceNodeId = self._migrate_ns(obj.nodeid)
330			ref.TargetNodeClass = ua.NodeClass.DataType
331			ref.TargetNodeId = self._migrate_ns(self.to_nodeid(data.target))
332			refs.append(ref)
333			self.server.iserver.isession.add_references(refs)
334
335			def _sort_nodes_by_parentid(self, ndatas):
336			"""
337			Sort the list of nodes according theire parent node in order to respect
338			the depency between nodes.
339
340			:param nodes: list of NodeDataObjects
341			:returns: list of sorted nodes
342			"""
343			_ndatas = list(ndatas)
344			# list of node ids that are already sorted / inserted
345			sorted_nodes_ids = []
346			# list of sorted nodes (i.e. XML Elements)
347			sorted_ndatas = []
348			all_node_ids = [data.nodeid for data in ndatas]
349			# list of namespace indexes that are relevant for this import
350			# we can only respect ordering nodes for namespaces indexes that
351			# are defined in the xml file itself. Thus we assume that all other
352			# references namespaces are already known to the server and should
353			# not create any dependency problems (like "NodeNotFound")
354			relevant_namespaces = [str(ns) for ns in self.namespaces.keys()]
355			while len(_ndatas) > 0:
356			pop_nodes = []
357			for ndata in _ndatas:
358			# Insert nodes that
359			# (1) have no parent / parent_ns is None (e.g. namespace 0)
360			# (2) ns is not in list of relevant namespaces
361			if ndata.nodeid.NamespaceIndex not in relevant_namespaces or \
362			ndata.parent is None or \
363			ndata.parent not in all_node_ids:
364			sorted_ndatas.append(ndata)
365			sorted_nodes_ids.append(ndata.nodeid)
366			pop_nodes.append(ndata)
367			else:
368			# Check if the nodes parent is already in the list of
369			# inserted nodes
370			if ndata.parent in sorted_nodes_ids:
371			sorted_ndatas.append(ndata)
372			sorted_nodes_ids.append(ndata.nodeid)
373			pop_nodes.append(ndata)
374
375			# Remove inserted nodes from the list
376			for ndata in pop_nodes:
377			_ndatas.pop(_ndatas.index(ndata))
378			return sorted_ndatas
379

FreeOpcUa / python-opcua

Pull Request — master (#327)

XmlImporter._add_variable_value() C

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