XmlImporter.add_variable() - Code Metrics - Inspection of "Move nsrel to xmlimport (#330)" - FreeOpcUa/python-opcua - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( c97137...1c6e5d )

by Olivier

created 2016-10-14 19:23 UTC

XmlImporter.add_variable() D

↳ Parent: XmlImporter

Complexity

Conditions

Size

Total Lines

Duplication

Lines	13
Ratio	54.17 %

Code Coverage

Tests	0
CRAP Score	72

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	8
dl	13
loc	24
ccs	0
cts	0
cp	0
crap	72
rs	4.3478
c	1
b	0
f	0

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

from opcua import ua
from opcua.common import xmlparser


def ua_type_to_python(val, uatype):
    if uatype.startswith("Int") or uatype.startswith("UInt"):
        return int(val)
    elif uatype in ("String"):
        return val
    elif uatype in ("Bytes", "Bytes", "ByteString", "ByteArray"):
        if sys.version_info.major > 2:
            return bytes(val, 'utf8')
        else:
            return val
    else:
        raise Exception("uatype nopt handled", uatype, " for val ", val)


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 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 = {}
        self._re_nodeid = re.compile(r"^ns=(?P<ns>\d+[^;]*);i=(?P<i>\d+)")

    def _map_namespaces(self, namespaces_uris, act_server):
        """
        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 = act_server.register_namespace(ns_uri)
            namespaces[ns_index + 1] = (ns_server_index, ns_uri)
            self.logger.info("namespace offset", 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._get_node_id(node_id)
        return aliases_mapped

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

        self.namespaces = self._map_namespaces(self.parser.get_used_namespaces(), act_server)

        self.aliases = self._map_aliases(self.parser.get_aliases())

        # The ordering of nodes currently only works if namespaces are
        # defined in XML.
        # Also, it is recommended not to use node ids without namespace prefix!
        nodes_parsed = self._sort_nodes_by_parentid(self.parser)

        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 _split_node_id(self, value):
        """
        Split the fq node id into namespace and id part.

        :returns: (namespace, id)
        """
        if not value:
            return (None, value)
        r_match = self._re_nodeid.search(value)
        if r_match:
            return r_match.groups()

        return (None, value)

    def _parse_bname(self, bname):
        """
        Parse a browsename and correct the namespace index.
        """
        if bname.find(':') != -1:
            browse_ns, browse_name = bname.split(':')
            if browse_ns:
                ns_server = self.namespaces.get(int(browse_ns), None)
                if ns_server:
                    return '%d:%s' % (ns_server[0], browse_name)
        return bname

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

        :returns: NodeId (str)
        """
        result = value

        node_ns, node_id = self._split_node_id(value)
        if node_ns:
            ns_server = self.namespaces.get(int(node_ns), None)
            if ns_server:
                result = "ns={};i={}".format(ns_server[0], node_id)
        return result

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

    def to_nodeid(self, nodeid):
        if 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:
                nodeid = self.aliases[nodeid]
            else:
                nodeid = "i={}".format(getattr(ua.ObjectIds, nodeid))
            return ua.NodeId.from_string(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.add_nodes([node])
        self._add_refs(obj)
        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.add_nodes([node])
        self._add_refs(obj)
        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 and len(obj.value) == 1:
        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.add_nodes([node])
        self._add_refs(obj)
        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(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:]
            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.add_nodes([node])
        self._add_refs(obj)
        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.add_nodes([node])
        self._add_refs(obj)
        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.add_nodes([node])
        self._add_refs(obj)
        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.add_nodes([node])
        self._add_refs(obj)
        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 = ua.NodeId.from_string(self._get_node_id(obj.nodeid))
            ref.TargetNodeClass = ua.NodeClass.DataType
            ref.TargetNodeId = ua.NodeId.from_string(self._get_node_id(data.target))
            refs.append(ref)
        self.server.add_references(refs)

    # FIX: wrong order of node sorting .. need to find out what is wrong
    def _sort_nodes_by_parentid(self, nodes):
        """
        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
        """
        _nodes = list(nodes)
        # list of node ids that are already sorted / inserted
        sorted_nodes_ids = []
        # list of sorted nodes (i.e. XML Elements)
        sorted_nodes = []
        # 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(_nodes) > 0:
            pop_nodes = []
            for node in _nodes:
                insert = None
                # Get the node and parent node namespace and id parts
                node_ns, node_id = self._split_node_id(node.nodeid)
                parent_ns, parent_id = self._split_node_id(node.parent)
                # 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 (parent_ns is None or
                    (len(relevant_namespaces) >= 1 and node_ns not in relevant_namespaces) or
                    parent_id is None):
                    insert = 0
                else:
                    # Check if the nodes parent is already in the list of
                    # inserted nodes
                    if node.parent in sorted_nodes_ids:
                        insert = -1
                if insert == 0:
                    sorted_nodes.insert(insert, node)
                    sorted_nodes_ids.insert(insert, node.nodeid)
                    pop_nodes.append(node)
                elif insert == -1:
                    sorted_nodes.append(node)
                    sorted_nodes_ids.append(node.nodeid)
                    pop_nodes.append(node)

            # Remove inserted nodes from the list
            for node in pop_nodes:
                _nodes.pop(_nodes.index(node))
        return sorted_nodes


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			import re
8	1
9	1		from opcua import ua
10			from opcua.common import xmlparser
11
12	1
13			def ua_type_to_python(val, uatype):
14	1		if uatype.startswith("Int") or uatype.startswith("UInt"):
15	1		return int(val)
16	1		elif uatype in ("String"):
17	1		return val
18			elif uatype in ("Bytes", "Bytes", "ByteString", "ByteArray"):
19	1		if sys.version_info.major > 2:
20	1		return bytes(val, 'utf8')
21	1		else:
22	1		return val
23	1		else:
24	1		raise Exception("uatype nopt handled", uatype, " for val ", val)
25	1
26
27	1		def to_python(val, obj, attname):
28	1		if isinstance(obj, ua.NodeId) and attname == "Identifier":
29			raise RuntimeError("Error we should parse a NodeId here")
30			return ua.NodeId.from_string(val)
31			else:
32			return ua_type_to_python(val, obj.ua_types[attname])
33
34
35			class XmlImporter(object):
36
37			def __init__(self, server):
38			self.logger = logging.getLogger(__name__)
39			self.parser = None
40	1		self.server = server
41	1		self.namespaces = {}
42	1		self.aliases = {}
43	1		self._re_nodeid = re.compile(r"^ns=(?P<ns>\d+[^;]*);i=(?P<i>\d+)")
44	1
45	1		def _map_namespaces(self, namespaces_uris, act_server):
46	1		"""
47	1		creates a mapping between the namespaces in the xml file and in the server.
48	1		if not present the namespace is registered.
49	1		"""
50	1		namespaces = {}
51	1		for ns_index, ns_uri in enumerate(namespaces_uris):
52			ns_server_index = act_server.register_namespace(ns_uri)
53	1		namespaces[ns_index + 1] = (ns_server_index, ns_uri)
54	1		self.logger.info("namespace offset", ns_index + 1, (ns_server_index, ns_uri))
55			return namespaces
56	1
57			def _map_aliases(self, aliases):
58			"""
59	1		maps the import aliases to the correct namespaces
60			"""
61	1		aliases_mapped = {}
62	1		for alias, node_id in aliases.items():
63	1		aliases_mapped[alias] = self._get_node_id(node_id)
64			return aliases_mapped
65
66	1		def import_xml(self, xmlpath, act_server):
67			"""
68	1		import xml and return added nodes
69			"""
70	1		self.logger.info("Importing XML file %s", xmlpath)
71	1		self.parser = xmlparser.XMLParser(xmlpath, act_server)
72	1
73	1	View Code Duplication	self.namespaces = self._map_namespaces(self.parser.get_used_namespaces(), act_server)
			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...
74	1		self.aliases = self._map_aliases(self.parser.get_aliases())
75	1
76	1		# The ordering of nodes currently only works if namespaces are
77	1		# defined in XML.
78	1		# Also, it is recommended not to use node ids without namespace prefix!
79	1		nodes_parsed = self._sort_nodes_by_parentid(self.parser)
80
81	1		nodes = []
82			for nodedata in nodes_parsed: # self.parser:
83			if nodedata.nodetype == 'UAObject':
84			node = self.add_object(nodedata)
85		View Code Duplication	elif nodedata.nodetype == 'UAObjectType':
			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...
86			node = self.add_object_type(nodedata)
87			elif nodedata.nodetype == 'UAVariable':
88			node = self.add_variable(nodedata)
89			elif nodedata.nodetype == 'UAVariableType':
90			node = self.add_variable_type(nodedata)
91			elif nodedata.nodetype == 'UAReferenceType':
92	1		node = self.add_reference_type(nodedata)
93	1		elif nodedata.nodetype == 'UADataType':
94	1		node = self.add_datatype(nodedata)
95	1		elif nodedata.nodetype == 'UAMethod':
96			node = self.add_method(nodedata)
97	1		else:
98	1		self.logger.warning("Not implemented node type: %s ", nodedata.nodetype)
99			continue
100	1		nodes.append(node)
101	1		return nodes
102	1
103	1		def _split_node_id(self, value):
104	1		"""
105			Split the fq node id into namespace and id part.
106	1
107			:returns: (namespace, id)
108	1		"""
109			if not value:
110	1		return (None, value)
111			r_match = self._re_nodeid.search(value)
112	1		if r_match:
113	1		return r_match.groups()
114	1
115			return (None, value)
116	1
117			def _parse_bname(self, bname):
118			"""
119			Parse a browsename and correct the namespace index.
120			"""
121			if bname.find(':') != -1:
122			browse_ns, browse_name = bname.split(':')
123			if browse_ns:
124			ns_server = self.namespaces.get(int(browse_ns), None)
125			if ns_server:
126			return '%d:%s' % (ns_server[0], browse_name)
127			return bname
128
129			def _get_node_id(self, value):
130			"""
131			Check if the nodeid given in the xml model file must be converted
132			to a already existing namespace id based on the files namespace uri
133
134			:returns: NodeId (str)
135	1		"""
136			result = value
137
138			node_ns, node_id = self._split_node_id(value)
139			if node_ns:
140			ns_server = self.namespaces.get(int(node_ns), None)
141			if ns_server:
142			result = "ns={};i={}".format(ns_server[0], node_id)
143			return result
144
145			def _get_node(self, obj):
146			node = ua.AddNodesItem()
147			node.RequestedNewNodeId = ua.NodeId.from_string(self._get_node_id(obj.nodeid))
148			node.BrowseName = ua.QualifiedName.from_string(self._parse_bname(obj.browsename))
149			node.NodeClass = getattr(ua.NodeClass, obj.nodetype[2:])
150			if obj.parent:
151			node.ParentNodeId = ua.NodeId.from_string(self._get_node_id(obj.parent))
152			if obj.parentlink:
153	1		node.ReferenceTypeId = self.to_nodeid(self._get_node_id(obj.parentlink))
154			if obj.typedef:
155			node.TypeDefinition = ua.NodeId.from_string(self._get_node_id(obj.typedef))
156			return node
157
158			def to_nodeid(self, nodeid):
159			if not nodeid:
160			return ua.NodeId(ua.ObjectIds.String)
161			elif "=" in nodeid:
162			return ua.NodeId.from_string(nodeid)
163			elif hasattr(ua.ObjectIds, nodeid):
164			return ua.NodeId(getattr(ua.ObjectIds, nodeid))
165			else:
166			if nodeid in self.aliases:
167			nodeid = self.aliases[nodeid]
168			else:
169	1		nodeid = "i={}".format(getattr(ua.ObjectIds, nodeid))
170			return ua.NodeId.from_string(nodeid)
171
172			def add_object(self, obj):
173			node = self._get_node(obj)
174			attrs = ua.ObjectAttributes()
175			if obj.desc:
176			attrs.Description = ua.LocalizedText(obj.desc)
177			attrs.DisplayName = ua.LocalizedText(obj.displayname)
178			attrs.EventNotifier = obj.eventnotifier
179			node.NodeAttributes = attrs
180			res = self.server.add_nodes([node])
181	1		self._add_refs(obj)
182	1		return res[0].AddedNodeId
183	1
184			def add_object_type(self, obj):
185			node = self._get_node(obj)
186			attrs = ua.ObjectTypeAttributes()
187			if obj.desc:
188			attrs.Description = ua.LocalizedText(obj.desc)
189			attrs.DisplayName = ua.LocalizedText(obj.displayname)
190			attrs.IsAbstract = obj.abstract
191			node.NodeAttributes = attrs
192			res = self.server.add_nodes([node])
193			self._add_refs(obj)
194			return res[0].AddedNodeId
195
196			def add_variable(self, obj):
197			node = self._get_node(obj)
198			attrs = ua.VariableAttributes()
199			if obj.desc:
200			attrs.Description = ua.LocalizedText(obj.desc)
201			attrs.DisplayName = ua.LocalizedText(obj.displayname)
202			attrs.DataType = self.to_nodeid(obj.datatype)
203			# if obj.value and len(obj.value) == 1:
204			if obj.value is not None:
205			attrs.Value = self._add_variable_value(obj,)
206			if obj.rank:
207		View Code Duplication	attrs.ValueRank = obj.rank
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208			if obj.accesslevel:
209			attrs.AccessLevel = obj.accesslevel
210			if obj.useraccesslevel:
211			attrs.UserAccessLevel = obj.useraccesslevel
212			if obj.minsample:
213			attrs.MinimumSamplingInterval = obj.minsample
214			if obj.dimensions:
215			attrs.ArrayDimensions = obj.dimensions
216			node.NodeAttributes = attrs
217			res = self.server.add_nodes([node])
218			self._add_refs(obj)
219		View Code Duplication	return res[0].AddedNodeId
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220
221			def _make_ext_obj(sefl, obj):
222			ext = getattr(ua, obj.objname)()
223			for name, val in obj.body:
224			if type(val) is str:
225			raise Exception("Error val should a dict", name, val)
226			else:
227			for attname, v in val:
228			# tow possible values:
229			# either we get value directly
230			# or a dict if it s an object or a list
231			if type(v) is str:
232			setattr(ext, attname, to_python(v, ext, attname))
233			else:
234			# so we habve either an object or a list...
235			obj2 = getattr(ext, attname)
236			if isinstance(obj2, ua.NodeId):
237			for attname2, v2 in v:
238		View Code Duplication	if attname2 == "Identifier":
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239			obj2 = ua.NodeId.from_string(v2)
240			setattr(ext, attname, obj2)
241			break
242			elif not isinstance(obj2, ua.NodeId) and not hasattr(obj2, "ua_types"):
243			# we probably have a list
244			my_list = []
245			for vtype, v2 in v:
246			my_list.append(ua_type_to_python(v2, vtype))
247			setattr(ext, attname, my_list)
248			else:
249			for attname2, v2 in v:
250			setattr(obj2, attname2, to_python(v2, obj2, attname2))
251			setattr(ext, attname, obj2)
252			return ext
253
254			def _add_variable_value(self, obj):
255			"""
256			Returns the value for a Variable based on the objects valuetype.
257			"""
258			if obj.valuetype == 'ListOfExtensionObject':
259			values = []
260			for ext in obj.value:
261			extobj = self._make_ext_obj(ext)
262			values.append(extobj)
263			return values
264			elif obj.valuetype.startswith("ListOf"):
265			vtype = obj.valuetype[6:]
266			return [getattr(ua, vtype)(v) for v in obj.value]
267			elif obj.valuetype == 'ExtensionObject':
268			extobj = self._make_ext_obj(obj.value)
269			return ua.Variant(extobj, getattr(ua.VariantType, obj.valuetype))
270			else:
271			return ua.Variant(obj.value, getattr(ua.VariantType, obj.valuetype))
272
273		View Code Duplication	def add_variable_type(self, obj):
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274			node = self._get_node(obj)
275			attrs = ua.VariableTypeAttributes()
276			if obj.desc:
277			attrs.Description = ua.LocalizedText(obj.desc)
278			attrs.DisplayName = ua.LocalizedText(obj.displayname)
279			attrs.DataType = self.to_nodeid(obj.datatype)
280			if obj.value and len(obj.value) == 1:
281			attrs.Value = obj.value[0]
282			if obj.rank:
283			attrs.ValueRank = obj.rank
284			if obj.abstract:
285			attrs.IsAbstract = obj.abstract
286			if obj.dimensions:
287			attrs.ArrayDimensions = obj.dimensions
288			node.NodeAttributes = attrs
289			res = self.server.add_nodes([node])
290			self._add_refs(obj)
291			return res[0].AddedNodeId
292
293		View Code Duplication	def add_method(self, obj):
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294			node = self._get_node(obj)
295			attrs = ua.MethodAttributes()
296			if obj.desc:
297			attrs.Description = ua.LocalizedText(obj.desc)
298			attrs.DisplayName = ua.LocalizedText(obj.displayname)
299			if obj.accesslevel:
300			attrs.AccessLevel = obj.accesslevel
301			if obj.useraccesslevel:
302			attrs.UserAccessLevel = obj.useraccesslevel
303			if obj.minsample:
304			attrs.MinimumSamplingInterval = obj.minsample
305			if obj.dimensions:
306			attrs.ArrayDimensions = obj.dimensions
307			node.NodeAttributes = attrs
308			res = self.server.add_nodes([node])
309			self._add_refs(obj)
310			return res[0].AddedNodeId
311
312			def add_reference_type(self, obj):
313			node = self._get_node(obj)
314			attrs = ua.ReferenceTypeAttributes()
315			if obj.desc:
316			attrs.Description = ua.LocalizedText(obj.desc)
317			attrs.DisplayName = ua.LocalizedText(obj.displayname)
318			if obj. inversename:
319			attrs.InverseName = ua.LocalizedText(obj.inversename)
320			if obj.abstract:
321			attrs.IsAbstract = obj.abstract
322			if obj.symmetric:
323			attrs.Symmetric = obj.symmetric
324			node.NodeAttributes = attrs
325			res = self.server.add_nodes([node])
326			self._add_refs(obj)
327			return res[0].AddedNodeId
328
329			def add_datatype(self, obj):
330			node = self._get_node(obj)
331			attrs = ua.DataTypeAttributes()
332			if obj.desc:
333			attrs.Description = ua.LocalizedText(obj.desc)
334			attrs.DisplayName = ua.LocalizedText(obj.displayname)
335			if obj.abstract:
336			attrs.IsAbstract = obj.abstract
337			node.NodeAttributes = attrs
338			res = self.server.add_nodes([node])
339			self._add_refs(obj)
340			return res[0].AddedNodeId
341
342			def _add_refs(self, obj):
343			if not obj.refs:
344			return
345			refs = []
346			for data in obj.refs:
347			ref = ua.AddReferencesItem()
348			ref.IsForward = True
349			ref.ReferenceTypeId = self.to_nodeid(data.reftype)
350			ref.SourceNodeId = ua.NodeId.from_string(self._get_node_id(obj.nodeid))
351			ref.TargetNodeClass = ua.NodeClass.DataType
352			ref.TargetNodeId = ua.NodeId.from_string(self._get_node_id(data.target))
353			refs.append(ref)
354			self.server.add_references(refs)
355
356			# FIX: wrong order of node sorting .. need to find out what is wrong
357			def _sort_nodes_by_parentid(self, nodes):
358			"""
359			Sort the list of nodes according theire parent node in order to respect
360			the depency between nodes.
361
362			:param nodes: list of NodeDataObjects
363			:returns: list of sorted nodes
364			"""
365			_nodes = list(nodes)
366			# list of node ids that are already sorted / inserted
367			sorted_nodes_ids = []
368			# list of sorted nodes (i.e. XML Elements)
369			sorted_nodes = []
370			# list of namespace indexes that are relevant for this import
371			# we can only respect ordering nodes for namespaces indexes that
372			# are defined in the xml file itself. Thus we assume that all other
373			# references namespaces are already known to the server and should
374			# not create any dependency problems (like "NodeNotFound")
375			relevant_namespaces = [str(ns) for ns in self.namespaces.keys()]
376			while len(_nodes) > 0:
377			pop_nodes = []
378			for node in _nodes:
379			insert = None
380			# Get the node and parent node namespace and id parts
381			node_ns, node_id = self._split_node_id(node.nodeid)
382			parent_ns, parent_id = self._split_node_id(node.parent)
383			# Insert nodes that
384			# (1) have no parent / parent_ns is None (e.g. namespace 0)
385			# (2) ns is not in list of relevant namespaces
386			if (parent_ns is None or
387			(len(relevant_namespaces) >= 1 and node_ns not in relevant_namespaces) or
388			parent_id is None):
389			insert = 0
390			else:
391			# Check if the nodes parent is already in the list of
392			# inserted nodes
393			if node.parent in sorted_nodes_ids:
394			insert = -1
395			if insert == 0:
396			sorted_nodes.insert(insert, node)
397			sorted_nodes_ids.insert(insert, node.nodeid)
398			pop_nodes.append(node)
399			elif insert == -1:
400			sorted_nodes.append(node)
401			sorted_nodes_ids.append(node.nodeid)
402			pop_nodes.append(node)
403
404			# Remove inserted nodes from the list
405			for node in pop_nodes:
406			_nodes.pop(_nodes.index(node))
407			return sorted_nodes
408

FreeOpcUa / python-opcua

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XmlImporter.add_variable() D

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