XmlImporter._add_variable_value() - Code Metrics - Inspection of "Merge pull request #296 from FreeOpcUa/bin" - FreeOpcUa/python-opcua - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 5df77d...7542cb )

by Olivier

created 2016-09-11 09:08 UTC

XmlImporter._add_variable_value() B

↳ Parent: XmlImporter

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	1
CRAP Score	25.0182

Importance

Changes

Metric	Value
cc	5
dl	0
loc	15
ccs	1
cts	14
cp	0.0714
crap	25.0182
rs	8.5454
c	0
b	0
f	0

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


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":
        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

    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)
        nodes = []
        for nodedata in 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(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 _get_node(self, obj):
        node = ua.AddNodesItem()
        node.RequestedNewNodeId = ua.NodeId.from_string(obj.nodeid)
        node.BrowseName = ua.QualifiedName.from_string(obj.browsename)
        node.NodeClass = getattr(ua.NodeClass, obj.nodetype[2:])

        if obj.parent:
            node.ParentNodeId = ua.NodeId.from_string(obj.parent)
        if obj.parentlink:
            node.ReferenceTypeId = self.to_nodeid(obj.parentlink)
        if obj.typedef:
            node.TypeDefinition = ua.NodeId.from_string(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.parser.aliases:
                nodeid = self.parser.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.items():
            if type(val) is str:
                raise Exception("Error val should a dict", name, val)
            else:
                for attname, v in val.items():
                    if type(v) is str:
                        setattr(ext, attname, to_python(v, ext, attname))
                    else:
                        for attname2, v2 in v.items():
                            obj2 = getattr(ext, attname)
                            setattr(obj2, attname2, to_python(v2, obj2, attname2))
        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]
        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(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(obj.nodeid)
            ref.TargetNodeClass = ua.NodeClass.DataType
            ref.TargetNodeId = ua.NodeId.from_string(data.target)
            refs.append(ref)
        self.server.add_references(refs)


1			"""
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
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			return ua.NodeId.from_string(val)
30			else:
31			return ua_type_to_python(val, obj.ua_types[attname])
32
33
34			class XmlImporter(object):
35
36			def __init__(self, server):
37			self.logger = logging.getLogger(__name__)
38			self.parser = None
39			self.server = server
40	1
41	1		def import_xml(self, xmlpath, act_server):
42	1		"""
43	1		import xml and return added nodes
44	1		"""
45	1		self.logger.info("Importing XML file %s", xmlpath)
46	1		self.parser = xmlparser.XMLParser(xmlpath, act_server)
47	1		nodes = []
48	1		for nodedata in self.parser:
49	1		if nodedata.nodetype == 'UAObject':
50	1		node = self.add_object(nodedata)
51	1		elif nodedata.nodetype == 'UAObjectType':
52			node = self.add_object_type(nodedata)
53	1		elif nodedata.nodetype == 'UAVariable':
54	1		node = self.add_variable(nodedata)
55			elif nodedata.nodetype == 'UAVariableType':
56	1		node = self.add_variable_type(nodedata)
57			elif nodedata.nodetype == 'UAReferenceType':
58			node = self.add_reference(nodedata)
59	1		elif nodedata.nodetype == 'UADataType':
60			node = self.add_datatype(nodedata)
61	1		elif nodedata.nodetype == 'UAMethod':
62	1		node = self.add_method(nodedata)
63	1		else:
64			self.logger.warning("Not implemented node type: %s ", nodedata.nodetype)
65			continue
66	1		nodes.append(node)
67			return nodes
68	1
69			def _get_node(self, obj):
70	1		node = ua.AddNodesItem()
71	1		node.RequestedNewNodeId = ua.NodeId.from_string(obj.nodeid)
72	1		node.BrowseName = ua.QualifiedName.from_string(obj.browsename)
73	1	View Code Duplication	node.NodeClass = getattr(ua.NodeClass, obj.nodetype[2:])
			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		if obj.parent:
75	1		node.ParentNodeId = ua.NodeId.from_string(obj.parent)
76	1		if obj.parentlink:
77	1		node.ReferenceTypeId = self.to_nodeid(obj.parentlink)
78	1		if obj.typedef:
79	1		node.TypeDefinition = ua.NodeId.from_string(obj.typedef)
80			return node
81	1
82			def to_nodeid(self, nodeid):
83			if not nodeid:
84			return ua.NodeId(ua.ObjectIds.String)
85		View Code Duplication	elif "=" in nodeid:
			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			return ua.NodeId.from_string(nodeid)
87			elif hasattr(ua.ObjectIds, nodeid):
88			return ua.NodeId(getattr(ua.ObjectIds, nodeid))
89			else:
90			if nodeid in self.parser.aliases:
91			nodeid = self.parser.aliases[nodeid]
92	1		else:
93	1		nodeid = "i={}".format(getattr(ua.ObjectIds, nodeid))
94	1		return ua.NodeId.from_string(nodeid)
95	1
96			def add_object(self, obj):
97	1		node = self._get_node(obj)
98	1		attrs = ua.ObjectAttributes()
99			if obj.desc:
100	1		attrs.Description = ua.LocalizedText(obj.desc)
101	1		attrs.DisplayName = ua.LocalizedText(obj.displayname)
102	1		attrs.EventNotifier = obj.eventnotifier
103	1		node.NodeAttributes = attrs
104	1		res = self.server.add_nodes([node])
105			self._add_refs(obj)
106	1		return res[0].AddedNodeId
107
108	1		def add_object_type(self, obj):
109			node = self._get_node(obj)
110	1		attrs = ua.ObjectTypeAttributes()
111			if obj.desc:
112	1		attrs.Description = ua.LocalizedText(obj.desc)
113	1		attrs.DisplayName = ua.LocalizedText(obj.displayname)
114	1		attrs.IsAbstract = obj.abstract
115			node.NodeAttributes = attrs
116	1		res = self.server.add_nodes([node])
117			self._add_refs(obj)
118			return res[0].AddedNodeId
119
120			def add_variable(self, obj):
121			node = self._get_node(obj)
122			attrs = ua.VariableAttributes()
123			if obj.desc:
124			attrs.Description = ua.LocalizedText(obj.desc)
125			attrs.DisplayName = ua.LocalizedText(obj.displayname)
126			attrs.DataType = self.to_nodeid(obj.datatype)
127			# if obj.value and len(obj.value) == 1:
128			if obj.value is not None:
129			attrs.Value = self._add_variable_value(obj, )
130			if obj.rank:
131			attrs.ValueRank = obj.rank
132			if obj.accesslevel:
133			attrs.AccessLevel = obj.accesslevel
134			if obj.useraccesslevel:
135	1		attrs.UserAccessLevel = obj.useraccesslevel
136			if obj.minsample:
137			attrs.MinimumSamplingInterval = obj.minsample
138			if obj.dimensions:
139			attrs.ArrayDimensions = obj.dimensions
140			node.NodeAttributes = attrs
141			res = self.server.add_nodes([node])
142			self._add_refs(obj)
143			return res[0].AddedNodeId
144
145			def _make_ext_obj(sefl, obj):
146			ext = getattr(ua, obj.objname)()
147			for name, val in obj.body.items():
148			if type(val) is str:
149			raise Exception("Error val should a dict", name, val)
150			else:
151			for attname, v in val.items():
152			if type(v) is str:
153	1		setattr(ext, attname, to_python(v, ext, attname))
154			else:
155			for attname2, v2 in v.items():
156			obj2 = getattr(ext, attname)
157			setattr(obj2, attname2, to_python(v2, obj2, attname2))
158			return ext
159
160			def _add_variable_value(self, obj):
161			"""
162			Returns the value for a Variable based on the objects valuetype.
163			"""
164			if obj.valuetype == 'ListOfExtensionObject':
165			values = []
166			for ext in obj.value:
167			extobj = self._make_ext_obj(ext)
168			values.append(extobj)
169	1		return values
170			elif obj.valuetype.startswith("ListOf"):
171			vtype = obj.valuetype[6:]
172			return [getattr(ua, vtype)(v) for v in obj.value]
173			else:
174			return ua.Variant(obj.value, getattr(ua.VariantType, obj.valuetype))
175
176			def add_variable_type(self, obj):
177			node = self._get_node(obj)
178			attrs = ua.VariableTypeAttributes()
179			if obj.desc:
180			attrs.Description = ua.LocalizedText(obj.desc)
181	1		attrs.DisplayName = ua.LocalizedText(obj.displayname)
182	1		attrs.DataType = self.to_nodeid(obj.datatype)
183	1		if obj.value and len(obj.value) == 1:
184			attrs.Value = obj.value[0]
185			if obj.rank:
186			attrs.ValueRank = obj.rank
187			if obj.abstract:
188			attrs.IsAbstract = obj.abstract
189			if obj.dimensions:
190			attrs.ArrayDimensions = obj.dimensions
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_method(self, obj):
197			node = self._get_node(obj)
198			attrs = ua.MethodAttributes()
199			if obj.desc:
200			attrs.Description = ua.LocalizedText(obj.desc)
201			attrs.DisplayName = ua.LocalizedText(obj.displayname)
202			if obj.accesslevel:
203			attrs.AccessLevel = obj.accesslevel
204			if obj.useraccesslevel:
205			attrs.UserAccessLevel = obj.useraccesslevel
206			if obj.minsample:
207		View Code Duplication	attrs.MinimumSamplingInterval = obj.minsample
			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...
208			if obj.dimensions:
209			attrs.ArrayDimensions = obj.dimensions
210			node.NodeAttributes = attrs
211			res = self.server.add_nodes([node])
212			self._add_refs(obj)
213			return res[0].AddedNodeId
214
215			def add_reference(self, obj):
216			node = self._get_node(obj)
217			attrs = ua.ReferenceTypeAttributes()
218			if obj.desc:
219		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...
220			attrs.DisplayName = ua.LocalizedText(obj.displayname)
221			if obj. inversename:
222			attrs.InverseName = ua.LocalizedText(obj.inversename)
223			if obj.abstract:
224			attrs.IsAbstract = obj.abstract
225			if obj.symmetric:
226			attrs.Symmetric = obj.symmetric
227			node.NodeAttributes = attrs
228			res = self.server.add_nodes([node])
229			self._add_refs(obj)
230			return res[0].AddedNodeId
231
232			def add_datatype(self, obj):
233			node = self._get_node(obj)
234			attrs = ua.DataTypeAttributes()
235			if obj.desc:
236			attrs.Description = ua.LocalizedText(obj.desc)
237			attrs.DisplayName = ua.LocalizedText(obj.displayname)
238		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...
239			attrs.IsAbstract = obj.abstract
240			node.NodeAttributes = attrs
241			res = self.server.add_nodes([node])
242			self._add_refs(obj)
243			return res[0].AddedNodeId
244
245			def _add_refs(self, obj):
246			if not obj.refs:
247			return
248			refs = []
249			for data in obj.refs:
250			ref = ua.AddReferencesItem()
251			ref.IsForward = True
252			ref.ReferenceTypeId = self.to_nodeid(data.reftype)
253			ref.SourceNodeId = ua.NodeId.from_string(obj.nodeid)
254			ref.TargetNodeClass = ua.NodeClass.DataType
255			ref.TargetNodeId = ua.NodeId.from_string(data.target)
256			refs.append(ref)
257			self.server.add_references(refs)
258

FreeOpcUa / python-opcua

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XmlImporter._add_variable_value() B

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