XmlImporter._add_node_data() - Code Metrics - Inspection of "[xmlimporter] support use of extension dictionarie..." - FreeOpcUa/python-opcua - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 7e6c7f...0b26fe )

by Olivier

created 2017-05-21 11:36 UTC

XmlImporter._add_node_data() C

↳ Parent: XmlImporter

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	14
CRAP Score	8.3518

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	8
dl	0
loc	18
ccs	14
cts	17
cp	0.8235
crap	8.3518
rs	6.6666
c	1
b	0
f	0

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

import opcua
from opcua import ua
from opcua.common import xmlparser

import sys

if sys.version_info.major > 2:
    unicode = str

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
        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)

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

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

        nodes = []
        for nodedata in nodes_parsed:  # self.parser:
            try:
                node = self._add_node_data(nodedata)
            except Exception:
                self.logger.warning("failure adding node %s", nodedata)
                raise
            nodes.append(node)
        return nodes

    def _add_node_data(self, nodedata):
        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)
        return node

    def _add_node(self, node):
        if isinstance(self.server, opcua.server.server.Server):
            return self.server.iserver.isession.add_nodes([node])
        else:
            return self.server.uaclient.add_nodes([node])

    def _add_references(self, refs):
        if isinstance(self.server, opcua.server.server.Server):
            return self.server.iserver.isession.add_references(refs)
        else:
            return self.server.uaclient.add_references(refs)

    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]
        return nodeid

    def _get_node(self, obj):
        node = ua.AddNodesItem()
        node.RequestedNewNodeId = self._migrate_ns(obj.nodeid)
        node.BrowseName = self._migrate_ns(obj.browsename)
        self.logger.info("Importing xml node (%s, %s) as (%s %s)", obj.browsename, obj.nodeid, node.BrowseName, node.RequestedNewNodeId)
        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._add_node(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._add_node(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._add_node(node)
        self._add_refs(obj)
        res[0].StatusCode.check()
        return res[0].AddedNodeId

    def _get_ext_class(self, name):
        if hasattr(ua, name):
            return  getattr(ua, name)
        elif name in self.aliases.keys():
            nodeid = self.aliases[name]
            class_type = ua.uatypes.get_extensionobject_class_type(nodeid)
            if class_type:
                return class_type
            else:
                raise Exception("Error no extension class registered ", name, nodeid)
        else:
            raise Exception("Error no alias found for extension class", name)

    def _make_ext_obj(self, obj):
        ext = self._get_ext_class(obj.objname)()
        for name, val in obj.body:
            if isinstance(val, str):
                raise Exception("Error val should a dict", name, val)
            else:
                for attname, v in val:
                    self._set_attr(ext, attname, v)
        return ext

    def _set_attr(self, obj, attname, val):
        # tow possible values:
        # either we get value directly
        # or a dict if it s an object or a list
        if isinstance(val, (str, unicode)):
            pval = xmlparser.ua_type_to_python(val, obj.ua_types[attname])
            setattr(obj, attname, pval)
        else:
            # so we have either an object or a list...
            obj2 = getattr(obj, attname)
            if isinstance(obj2, ua.NodeId):  # NodeId representation does not follow common rules!!
                for attname2, v2 in val:
                    if attname2 == "Identifier":
                        obj2 = ua.NodeId.from_string(v2)
                        setattr(obj, 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 val:
                    my_list.append(xmlparser.ua_type_to_python(v2, vtype))
                setattr(obj, attname, my_list)
            else:
                for attname2, v2 in val:
                    self._set_attr(obj2, attname2, v2)
                setattr(obj, attname, obj2)

    def _add_variable_value(self, obj):
        """
        Returns the value for a Variable based on the objects value type.
        """
        self.logger.debug("Setting value with type %s and value %s", obj.valuetype, obj.value)
        if obj.valuetype == 'ListOfExtensionObject':
            values = []
            for ext in obj.value:
                extobj = self._make_ext_obj(ext)
                values.append(extobj)
            return ua.Variant(values, ua.VariantType.ExtensionObject)
        elif obj.valuetype == 'ListOfGuid':
            return ua.Variant([
                uuid.UUID(guid) for guid in obj.value
            ], getattr(ua.VariantType, obj.valuetype[6:]))
        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 ua.Variant([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))
        elif obj.valuetype == 'Guid':
            return ua.Variant(uuid.UUID(obj.value), getattr(ua.VariantType, obj.valuetype))
        elif obj.valuetype == 'LocalizedText':
            ltext = ua.LocalizedText()
            for name, val in obj.value:
                if name == "Text":
                    ltext.Text = val.encode("utf-8")
                else:
                    self.logger.warning("While parsing localizedText value, unkown element: %s with val: %s", name, val)
            return ua.Variant(ltext, ua.VariantType.LocalizedText)
        elif obj.valuetype == 'NodeId':
            return ua.Variant(ua.NodeId.from_string(obj.value))
        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._add_node(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._add_node(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._add_node(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._add_node(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._add_references(refs)

    def _sort_nodes_by_parentid(self, ndatas):
        """
        Sort the list of nodes according their parent node in order to respect
        the dependency 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")
        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 self.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			"""
2			add nodes defined in XML to address space
3			format is the one from opc-ua specification
4			"""
5	1		import logging
6	1		import uuid
7	1		from copy import copy
8
9	1		import opcua
10	1		from opcua import ua
11	1		from opcua.common import xmlparser
12
13	1		import sys
14
15	1		if sys.version_info.major > 2:
16			unicode = str
17
18	1		class XmlImporter(object):
19
20	1		def __init__(self, server):
21	1		self.logger = logging.getLogger(__name__)
22	1		self.parser = None
23	1		self.server = server
24	1		self.namespaces = {}
25	1		self.aliases = {}
26
27	1		def _map_namespaces(self, namespaces_uris):
28			"""
29			creates a mapping between the namespaces in the xml file and in the server.
30			if not present the namespace is registered.
31			"""
32	1		namespaces = {}
33	1		for ns_index, ns_uri in enumerate(namespaces_uris):
34	1		ns_server_index = self.server.register_namespace(ns_uri)
35	1		namespaces[ns_index + 1] = ns_server_index
36	1		return namespaces
37
38	1		def _map_aliases(self, aliases):
39			"""
40			maps the import aliases to the correct namespaces
41			"""
42	1		aliases_mapped = {}
43	1		for alias, node_id in aliases.items():
44	1		aliases_mapped[alias] = self._migrate_ns(self.to_nodeid(node_id))
45	1		return aliases_mapped
46
47	1		def import_xml(self, xmlpath):
48			"""
49			import xml and return added nodes
50			"""
51	1		self.logger.info("Importing XML file %s", xmlpath)
52	1		self.parser = xmlparser.XMLParser(xmlpath)
53
54	1		self.namespaces = self._map_namespaces(self.parser.get_used_namespaces())
55	1		self.aliases = self._map_aliases(self.parser.get_aliases())
56
57	1		dnodes = self.parser.get_node_datas()
58	1		dnodes = self.make_objects(dnodes)
59	1		nodes_parsed = self._sort_nodes_by_parentid(dnodes)
60
61	1		nodes = []
62	1		for nodedata in nodes_parsed: # self.parser:
63	1		try:
64	1		node = self._add_node_data(nodedata)
65			except Exception:
66			self.logger.warning("failure adding node %s", nodedata)
67			raise
68	1		nodes.append(node)
69	1		return nodes
70
71	1		def _add_node_data(self, nodedata):
72	1		if nodedata.nodetype == 'UAObject':
73	1		node = self.add_object(nodedata)
74	1		elif nodedata.nodetype == 'UAObjectType':
75	1		node = self.add_object_type(nodedata)
76	1		elif nodedata.nodetype == 'UAVariable':
77	1		node = self.add_variable(nodedata)
78	1		elif nodedata.nodetype == 'UAVariableType':
79			node = self.add_variable_type(nodedata)
80	1		elif nodedata.nodetype == 'UAReferenceType':
81			node = self.add_reference_type(nodedata)
82	1		elif nodedata.nodetype == 'UADataType':
83	1		node = self.add_datatype(nodedata)
84	1		elif nodedata.nodetype == 'UAMethod':
85	1		node = self.add_method(nodedata)
86			else:
87			self.logger.warning("Not implemented node type: %s ", nodedata.nodetype)
88	1		return node
89
90	1		def _add_node(self, node):
91	1		if isinstance(self.server, opcua.server.server.Server):
92	1		return self.server.iserver.isession.add_nodes([node])
93			else:
94	1		return self.server.uaclient.add_nodes([node])
95
96	1		def _add_references(self, refs):
97	1		if isinstance(self.server, opcua.server.server.Server):
98	1		return self.server.iserver.isession.add_references(refs)
99			else:
100	1		return self.server.uaclient.add_references(refs)
101
102	1		def make_objects(self, node_datas):
103	1		new_nodes = []
104	1		for ndata in node_datas:
105	1		ndata.nodeid = ua.NodeId.from_string(ndata.nodeid)
106	1		ndata.browsename = ua.QualifiedName.from_string(ndata.browsename)
107	1		if ndata.parent:
108	1		ndata.parent = ua.NodeId.from_string(ndata.parent)
109	1		if ndata.parentlink:
110	1		ndata.parentlink = self.to_nodeid(ndata.parentlink)
111	1		if ndata.typedef:
112	1		ndata.typedef = self.to_nodeid(ndata.typedef)
113	1		new_nodes.append(ndata)
114	1		return new_nodes
115
116	1		def _migrate_ns(self, nodeid):
117			"""
118			Check if the index of nodeid or browsename given in the xml model file
119			must be converted to a already existing namespace id based on the files
120			namespace uri
121
122			:returns: NodeId (str)
123			"""
124	1		if nodeid.NamespaceIndex in self.namespaces:
125	1		nodeid = copy(nodeid)
126	1		nodeid.NamespaceIndex = self.namespaces[nodeid.NamespaceIndex]
127	1		return nodeid
128
129	1		def _get_node(self, obj):
130	1		node = ua.AddNodesItem()
131	1		node.RequestedNewNodeId = self._migrate_ns(obj.nodeid)
132	1		node.BrowseName = self._migrate_ns(obj.browsename)
133	1		self.logger.info("Importing xml node (%s, %s) as (%s %s)", obj.browsename, obj.nodeid, node.BrowseName, node.RequestedNewNodeId)
134	1		node.NodeClass = getattr(ua.NodeClass, obj.nodetype[2:])
135	1		if obj.parent:
136	1		node.ParentNodeId = self._migrate_ns(obj.parent)
137	1		if obj.parentlink:
138	1		node.ReferenceTypeId = self._migrate_ns(obj.parentlink)
139	1		if obj.typedef:
140	1		node.TypeDefinition = self._migrate_ns(obj.typedef)
141	1		return node
142
143	1		def to_nodeid(self, nodeid):
144	1		if isinstance(nodeid, ua.NodeId):
145			return nodeid
146	1		elif not nodeid:
147			return ua.NodeId(ua.ObjectIds.String)
148	1		elif "=" in nodeid:
149	1	View Code Duplication	return ua.NodeId.from_string(nodeid)
			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...
150	1		elif hasattr(ua.ObjectIds, nodeid):
151	1		return ua.NodeId(getattr(ua.ObjectIds, nodeid))
152			else:
153	1		if nodeid in self.aliases:
154	1		return self.aliases[nodeid]
155			else:
156			return ua.NodeId(getattr(ua.ObjectIds, nodeid))
157
158	1		def add_object(self, obj):
159	1		node = self._get_node(obj)
160	1		attrs = ua.ObjectAttributes()
161	1		if obj.desc:
162	1	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...
163	1		attrs.DisplayName = ua.LocalizedText(obj.displayname)
164	1		attrs.EventNotifier = obj.eventnotifier
165	1		node.NodeAttributes = attrs
166	1		res = self._add_node(node)
167	1		self._add_refs(obj)
168	1		res[0].StatusCode.check()
169	1		return res[0].AddedNodeId
170
171	1		def add_object_type(self, obj):
172	1		node = self._get_node(obj)
173	1		attrs = ua.ObjectTypeAttributes()
174	1		if obj.desc:
175			attrs.Description = ua.LocalizedText(obj.desc)
176	1		attrs.DisplayName = ua.LocalizedText(obj.displayname)
177	1		attrs.IsAbstract = obj.abstract
178	1		node.NodeAttributes = attrs
179	1		res = self._add_node(node)
180	1		self._add_refs(obj)
181	1		res[0].StatusCode.check()
182	1		return res[0].AddedNodeId
183
184	1		def add_variable(self, obj):
185	1		node = self._get_node(obj)
186	1		attrs = ua.VariableAttributes()
187	1		if obj.desc:
188	1		attrs.Description = ua.LocalizedText(obj.desc)
189	1		attrs.DisplayName = ua.LocalizedText(obj.displayname)
190	1		attrs.DataType = self.to_nodeid(obj.datatype)
191	1		if obj.value is not None:
192	1		attrs.Value = self._add_variable_value(obj,)
193	1		if obj.rank:
194	1		attrs.ValueRank = obj.rank
195	1		if obj.accesslevel:
196			attrs.AccessLevel = obj.accesslevel
197	1		if obj.useraccesslevel:
198			attrs.UserAccessLevel = obj.useraccesslevel
199	1		if obj.minsample:
200			attrs.MinimumSamplingInterval = obj.minsample
201	1		if obj.dimensions:
202	1		attrs.ArrayDimensions = obj.dimensions
203	1		node.NodeAttributes = attrs
204	1		res = self._add_node(node)
205	1		self._add_refs(obj)
206	1		res[0].StatusCode.check()
207	1		return res[0].AddedNodeId
208
209	1		def _get_ext_class(self, name):
210	1		if hasattr(ua, name):
211	1		return getattr(ua, name)
212			elif name in self.aliases.keys():
213			nodeid = self.aliases[name]
214			class_type = ua.uatypes.get_extensionobject_class_type(nodeid)
215			if class_type:
216			return class_type
217			else:
218			raise Exception("Error no extension class registered ", name, nodeid)
219			else:
220			raise Exception("Error no alias found for extension class", name)
221
222	1		def _make_ext_obj(self, obj):
223	1		ext = self._get_ext_class(obj.objname)()
224	1		for name, val in obj.body:
225	1		if isinstance(val, str):
226			raise Exception("Error val should a dict", name, val)
227			else:
228	1		for attname, v in val:
229	1		self._set_attr(ext, attname, v)
230	1		return ext
231
232	1		def _set_attr(self, obj, attname, val):
233			# tow possible values:
234			# either we get value directly
235			# or a dict if it s an object or a list
236	1		if isinstance(val, (str, unicode)):
237	1		pval = xmlparser.ua_type_to_python(val, obj.ua_types[attname])
238	1		setattr(obj, attname, pval)
239			else:
240			# so we have either an object or a list...
241	1		obj2 = getattr(obj, attname)
242	1		if isinstance(obj2, ua.NodeId): # NodeId representation does not follow common rules!!
243	1		for attname2, v2 in val:
244	1		if attname2 == "Identifier":
245	1		obj2 = ua.NodeId.from_string(v2)
246	1		setattr(obj, attname, obj2)
247	1		break
248	1		elif not isinstance(obj2, ua.NodeId) and not hasattr(obj2, "ua_types"):
249			# we probably have a list
250	1		my_list = []
251	1		for vtype, v2 in val:
252	1		my_list.append(xmlparser.ua_type_to_python(v2, vtype))
253	1		setattr(obj, attname, my_list)
254			else:
255	1		for attname2, v2 in val:
256	1		self._set_attr(obj2, attname2, v2)
257	1		setattr(obj, attname, obj2)
258
259	1		def _add_variable_value(self, obj):
260			"""
261			Returns the value for a Variable based on the objects value type.
262			"""
263	1		self.logger.debug("Setting value with type %s and value %s", obj.valuetype, obj.value)
264	1		if obj.valuetype == 'ListOfExtensionObject':
265	1		values = []
266	1		for ext in obj.value:
267	1		extobj = self._make_ext_obj(ext)
268	1		values.append(extobj)
269	1		return ua.Variant(values, ua.VariantType.ExtensionObject)
270	1		elif obj.valuetype == 'ListOfGuid':
271	1		return ua.Variant([
272			uuid.UUID(guid) for guid in obj.value
273			], getattr(ua.VariantType, obj.valuetype[6:]))
274	1		elif obj.valuetype.startswith("ListOf"):
275	1		vtype = obj.valuetype[6:]
276	1		if hasattr(ua.ua_binary.Primitives, vtype):
277	1		return ua.Variant(obj.value, getattr(ua.VariantType, vtype))
278			else:
279	1		return ua.Variant([getattr(ua, vtype)(v) for v in obj.value])
280	1		elif obj.valuetype == 'ExtensionObject':
281	1		extobj = self._make_ext_obj(obj.value)
282	1		return ua.Variant(extobj, getattr(ua.VariantType, obj.valuetype))
283	1		elif obj.valuetype == 'Guid':
284	1		return ua.Variant(uuid.UUID(obj.value), getattr(ua.VariantType, obj.valuetype))
285	1		elif obj.valuetype == 'LocalizedText':
286	1		ltext = ua.LocalizedText()
287	1		for name, val in obj.value:
288	1		if name == "Text":
289	1		ltext.Text = val.encode("utf-8")
290			else:
291			self.logger.warning("While parsing localizedText value, unkown element: %s with val: %s", name, val)
292	1		return ua.Variant(ltext, ua.VariantType.LocalizedText)
293	1		elif obj.valuetype == 'NodeId':
294	1		return ua.Variant(ua.NodeId.from_string(obj.value))
295			else:
296	1		return ua.Variant(obj.value, getattr(ua.VariantType, obj.valuetype))
297
298	1		def add_variable_type(self, obj):
299			node = self._get_node(obj)
300			attrs = ua.VariableTypeAttributes()
301			if obj.desc:
302			attrs.Description = ua.LocalizedText(obj.desc)
303			attrs.DisplayName = ua.LocalizedText(obj.displayname)
304			attrs.DataType = self.to_nodeid(obj.datatype)
305			if obj.value and len(obj.value) == 1:
306			attrs.Value = obj.value[0]
307			if obj.rank:
308			attrs.ValueRank = obj.rank
309			if obj.abstract:
310			attrs.IsAbstract = obj.abstract
311			if obj.dimensions:
312			attrs.ArrayDimensions = obj.dimensions
313			node.NodeAttributes = attrs
314			res = self._add_node(node)
315			self._add_refs(obj)
316			res[0].StatusCode.check()
317			return res[0].AddedNodeId
318
319	1		def add_method(self, obj):
320	1		node = self._get_node(obj)
321	1		attrs = ua.MethodAttributes()
322	1		if obj.desc:
323	1		attrs.Description = ua.LocalizedText(obj.desc)
324	1		attrs.DisplayName = ua.LocalizedText(obj.displayname)
325	1		if obj.accesslevel:
326			attrs.AccessLevel = obj.accesslevel
327	1		if obj.useraccesslevel:
328			attrs.UserAccessLevel = obj.useraccesslevel
329	1		if obj.minsample:
330			attrs.MinimumSamplingInterval = obj.minsample
331	1		if obj.dimensions:
332			attrs.ArrayDimensions = obj.dimensions
333	1		node.NodeAttributes = attrs
334	1		res = self._add_node(node)
335	1	View Code Duplication	self._add_refs(obj)
			0 ignored issues – show Duplication introduced 2017-05-16 12:24 UTC by Report Bug Copy Issue Report This code seems to be duplicated in your project. Loading history...
336	1		res[0].StatusCode.check()
337	1		return res[0].AddedNodeId
338
339	1		def add_reference_type(self, obj):
340			node = self._get_node(obj)
341			attrs = ua.ReferenceTypeAttributes()
342			if obj.desc:
343			attrs.Description = ua.LocalizedText(obj.desc)
344			attrs.DisplayName = ua.LocalizedText(obj.displayname)
345			if obj. inversename:
346			attrs.InverseName = ua.LocalizedText(obj.inversename)
347			if obj.abstract:
348			attrs.IsAbstract = obj.abstract
349			if obj.symmetric:
350			attrs.Symmetric = obj.symmetric
351			node.NodeAttributes = attrs
352			res = self._add_node(node)
353			self._add_refs(obj)
354			res[0].StatusCode.check()
355			return res[0].AddedNodeId
356
357	1		def add_datatype(self, obj):
358	1		node = self._get_node(obj)
359	1		attrs = ua.DataTypeAttributes()
360	1		if obj.desc:
361	1		attrs.Description = ua.LocalizedText(obj.desc)
362	1		attrs.DisplayName = ua.LocalizedText(obj.displayname)
363	1		if obj.abstract:
364			attrs.IsAbstract = obj.abstract
365	1		node.NodeAttributes = attrs
366	1		res = self._add_node(node)
367	1		self._add_refs(obj)
368	1		res[0].StatusCode.check()
369	1		return res[0].AddedNodeId
370
371	1		def _add_refs(self, obj):
372	1		if not obj.refs:
373	1		return
374	1		refs = []
375	1		for data in obj.refs:
376	1		ref = ua.AddReferencesItem()
377	1		ref.IsForward = True
378	1		ref.ReferenceTypeId = self.to_nodeid(data.reftype)
379	1		ref.SourceNodeId = self._migrate_ns(obj.nodeid)
380	1		ref.TargetNodeClass = ua.NodeClass.DataType
381	1		ref.TargetNodeId = self._migrate_ns(self.to_nodeid(data.target))
382	1		refs.append(ref)
383	1		self._add_references(refs)
384
385	1		def _sort_nodes_by_parentid(self, ndatas):
386			"""
387			Sort the list of nodes according their parent node in order to respect
388			the dependency between nodes.
389
390			:param nodes: list of NodeDataObjects
391			:returns: list of sorted nodes
392			"""
393	1		_ndatas = list(ndatas)
394			# list of node ids that are already sorted / inserted
395	1		sorted_nodes_ids = []
396			# list of sorted nodes (i.e. XML Elements)
397	1		sorted_ndatas = []
398	1		all_node_ids = [data.nodeid for data in ndatas]
399			# list of namespace indexes that are relevant for this import
400			# we can only respect ordering nodes for namespaces indexes that
401			# are defined in the xml file itself. Thus we assume that all other
402			# references namespaces are already known to the server and should
403			# not create any dependency problems (like "NodeNotFound")
404	1		while len(_ndatas) > 0:
405	1		pop_nodes = []
406	1		for ndata in _ndatas:
407			# Insert nodes that
408			# (1) have no parent / parent_ns is None (e.g. namespace 0)
409			# (2) ns is not in list of relevant namespaces
410	1		if ndata.nodeid.NamespaceIndex not in self.namespaces or \
411			ndata.parent is None or \
412			ndata.parent not in all_node_ids:
413	1		sorted_ndatas.append(ndata)
414	1		sorted_nodes_ids.append(ndata.nodeid)
415	1		pop_nodes.append(ndata)
416			else:
417			# Check if the nodes parent is already in the list of
418			# inserted nodes
419	1		if ndata.parent in sorted_nodes_ids:
420	1		sorted_ndatas.append(ndata)
421	1		sorted_nodes_ids.append(ndata.nodeid)
422	1		pop_nodes.append(ndata)
423			# Remove inserted nodes from the list
424	1		for ndata in pop_nodes:
425	1		_ndatas.pop(_ndatas.index(ndata))
426			return sorted_ndatas
427

FreeOpcUa / python-opcua

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XmlImporter._add_node_data() C

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