FreeOpcUa /
python-opcua
| Total Complexity | 66 |
| Total Lines | 224 |
| Duplicated Lines | 30.36 % |
| Coverage | 38.89% |
| Changes | 1 | ||
| Bugs | 1 | Features | 0 |
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like XmlImporter often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
| 1 | """ |
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| 34 | class XmlImporter(object): |
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| 35 | |||
| 36 | def __init__(self, server): |
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| 37 | self.logger = logging.getLogger(__name__) |
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| 38 | self.parser = None |
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| 39 | self.server = server |
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| 40 | 1 | ||
| 41 | 1 | def import_xml(self, xmlpath, act_server): |
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| 42 | 1 | """ |
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| 43 | 1 | import xml and return added nodes |
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| 44 | 1 | """ |
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| 45 | 1 | self.logger.info("Importing XML file %s", xmlpath) |
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| 46 | 1 | self.parser = xmlparser.XMLParser(xmlpath, act_server) |
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| 47 | 1 | nodes = [] |
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| 48 | 1 | for nodedata in self.parser: |
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| 49 | 1 | if nodedata.nodetype == 'UAObject': |
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| 50 | 1 | node = self.add_object(nodedata) |
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| 51 | 1 | elif nodedata.nodetype == 'UAObjectType': |
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| 52 | node = self.add_object_type(nodedata) |
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| 53 | 1 | elif nodedata.nodetype == 'UAVariable': |
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| 54 | 1 | node = self.add_variable(nodedata) |
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| 55 | elif nodedata.nodetype == 'UAVariableType': |
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| 56 | 1 | node = self.add_variable_type(nodedata) |
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| 57 | elif nodedata.nodetype == 'UAReferenceType': |
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| 58 | node = self.add_reference(nodedata) |
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| 59 | 1 | elif nodedata.nodetype == 'UADataType': |
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| 60 | node = self.add_datatype(nodedata) |
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| 61 | 1 | elif nodedata.nodetype == 'UAMethod': |
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| 62 | 1 | node = self.add_method(nodedata) |
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| 63 | 1 | else: |
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| 64 | self.logger.warning("Not implemented node type: %s ", nodedata.nodetype) |
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| 65 | continue |
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| 66 | 1 | nodes.append(node) |
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| 67 | return nodes |
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| 68 | 1 | ||
| 69 | def _get_node(self, obj): |
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| 70 | 1 | node = ua.AddNodesItem() |
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| 71 | 1 | node.RequestedNewNodeId = ua.NodeId.from_string(obj.nodeid) |
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| 72 | 1 | node.BrowseName = ua.QualifiedName.from_string(obj.browsename) |
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| 73 | 1 | View Code Duplication | node.NodeClass = getattr(ua.NodeClass, obj.nodetype[2:]) |
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Duplication
introduced
by
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| 74 | 1 | if obj.parent: |
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| 75 | 1 | node.ParentNodeId = ua.NodeId.from_string(obj.parent) |
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| 76 | 1 | if obj.parentlink: |
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| 77 | 1 | node.ReferenceTypeId = self.to_nodeid(obj.parentlink) |
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| 78 | 1 | if obj.typedef: |
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| 79 | 1 | node.TypeDefinition = ua.NodeId.from_string(obj.typedef) |
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| 80 | return node |
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| 81 | 1 | ||
| 82 | def to_nodeid(self, nodeid): |
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| 83 | if not nodeid: |
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| 84 | return ua.NodeId(ua.ObjectIds.String) |
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| 85 | View Code Duplication | elif "=" in nodeid: |
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| 86 | return ua.NodeId.from_string(nodeid) |
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| 87 | elif hasattr(ua.ObjectIds, nodeid): |
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| 88 | return ua.NodeId(getattr(ua.ObjectIds, nodeid)) |
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| 89 | else: |
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| 90 | if nodeid in self.parser.aliases: |
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| 91 | nodeid = self.parser.aliases[nodeid] |
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| 92 | 1 | else: |
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| 93 | 1 | nodeid = "i={}".format(getattr(ua.ObjectIds, nodeid)) |
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| 94 | 1 | return ua.NodeId.from_string(nodeid) |
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| 95 | 1 | ||
| 96 | def add_object(self, obj): |
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| 97 | 1 | node = self._get_node(obj) |
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| 98 | 1 | attrs = ua.ObjectAttributes() |
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| 99 | if obj.desc: |
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| 100 | 1 | attrs.Description = ua.LocalizedText(obj.desc) |
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| 101 | 1 | attrs.DisplayName = ua.LocalizedText(obj.displayname) |
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| 102 | 1 | attrs.EventNotifier = obj.eventnotifier |
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| 103 | 1 | node.NodeAttributes = attrs |
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| 104 | 1 | res = self.server.add_nodes([node]) |
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| 105 | self._add_refs(obj) |
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| 106 | 1 | return res[0].AddedNodeId |
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| 107 | |||
| 108 | 1 | def add_object_type(self, obj): |
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| 109 | node = self._get_node(obj) |
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| 110 | 1 | attrs = ua.ObjectTypeAttributes() |
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| 111 | if obj.desc: |
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| 112 | 1 | attrs.Description = ua.LocalizedText(obj.desc) |
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| 113 | 1 | attrs.DisplayName = ua.LocalizedText(obj.displayname) |
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| 114 | 1 | attrs.IsAbstract = obj.abstract |
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| 115 | node.NodeAttributes = attrs |
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| 116 | 1 | res = self.server.add_nodes([node]) |
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| 117 | self._add_refs(obj) |
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| 118 | return res[0].AddedNodeId |
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| 119 | |||
| 120 | def add_variable(self, obj): |
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| 121 | node = self._get_node(obj) |
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| 122 | attrs = ua.VariableAttributes() |
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| 123 | if obj.desc: |
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| 124 | attrs.Description = ua.LocalizedText(obj.desc) |
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| 125 | attrs.DisplayName = ua.LocalizedText(obj.displayname) |
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| 126 | attrs.DataType = self.to_nodeid(obj.datatype) |
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| 127 | # if obj.value and len(obj.value) == 1: |
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| 128 | if obj.value is not None: |
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| 129 | attrs.Value = self._add_variable_value(obj, ) |
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| 130 | if obj.rank: |
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| 131 | attrs.ValueRank = obj.rank |
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| 132 | if obj.accesslevel: |
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| 133 | attrs.AccessLevel = obj.accesslevel |
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| 134 | if obj.useraccesslevel: |
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| 135 | 1 | attrs.UserAccessLevel = obj.useraccesslevel |
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| 136 | if obj.minsample: |
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| 137 | attrs.MinimumSamplingInterval = obj.minsample |
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| 138 | if obj.dimensions: |
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| 139 | attrs.ArrayDimensions = obj.dimensions |
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| 140 | node.NodeAttributes = attrs |
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| 141 | res = self.server.add_nodes([node]) |
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| 142 | self._add_refs(obj) |
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| 143 | return res[0].AddedNodeId |
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| 144 | |||
| 145 | def _make_ext_obj(sefl, obj): |
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| 146 | ext = getattr(ua, obj.objname)() |
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| 147 | for name, val in obj.body.items(): |
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| 148 | if type(val) is str: |
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| 149 | raise Exception("Error val should a dict", name, val) |
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| 150 | else: |
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| 151 | for attname, v in val.items(): |
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| 152 | if type(v) is str: |
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| 153 | 1 | setattr(ext, attname, to_python(v, ext, attname)) |
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| 154 | else: |
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| 155 | for attname2, v2 in v.items(): |
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| 156 | obj2 = getattr(ext, attname) |
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| 157 | setattr(obj2, attname2, to_python(v2, obj2, attname2)) |
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| 158 | return ext |
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| 159 | |||
| 160 | def _add_variable_value(self, obj): |
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| 161 | """ |
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| 162 | Returns the value for a Variable based on the objects valuetype. |
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| 163 | """ |
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| 164 | if obj.valuetype == 'ListOfExtensionObject': |
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| 165 | values = [] |
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| 166 | for ext in obj.value: |
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| 167 | extobj = self._make_ext_obj(ext) |
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| 168 | values.append(extobj) |
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| 169 | 1 | return values |
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| 170 | elif obj.valuetype.startswith("ListOf"): |
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| 171 | vtype = obj.valuetype[6:] |
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| 172 | return [getattr(ua, vtype)(v) for v in obj.value] |
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| 173 | else: |
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| 174 | return ua.Variant(obj.value, getattr(ua.VariantType, obj.valuetype)) |
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| 175 | |||
| 176 | def add_variable_type(self, obj): |
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| 177 | node = self._get_node(obj) |
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| 178 | attrs = ua.VariableTypeAttributes() |
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| 179 | if obj.desc: |
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| 180 | attrs.Description = ua.LocalizedText(obj.desc) |
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| 181 | 1 | attrs.DisplayName = ua.LocalizedText(obj.displayname) |
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| 182 | 1 | attrs.DataType = self.to_nodeid(obj.datatype) |
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| 183 | 1 | if obj.value and len(obj.value) == 1: |
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| 184 | attrs.Value = obj.value[0] |
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| 185 | if obj.rank: |
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| 186 | attrs.ValueRank = obj.rank |
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| 187 | if obj.abstract: |
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| 188 | attrs.IsAbstract = obj.abstract |
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| 189 | if obj.dimensions: |
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| 190 | attrs.ArrayDimensions = obj.dimensions |
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| 191 | node.NodeAttributes = attrs |
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| 192 | res = self.server.add_nodes([node]) |
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| 193 | self._add_refs(obj) |
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| 194 | return res[0].AddedNodeId |
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| 195 | |||
| 196 | def add_method(self, obj): |
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| 197 | node = self._get_node(obj) |
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| 198 | attrs = ua.MethodAttributes() |
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| 199 | if obj.desc: |
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| 200 | attrs.Description = ua.LocalizedText(obj.desc) |
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| 201 | attrs.DisplayName = ua.LocalizedText(obj.displayname) |
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| 202 | if obj.accesslevel: |
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| 203 | attrs.AccessLevel = obj.accesslevel |
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| 204 | if obj.useraccesslevel: |
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| 205 | attrs.UserAccessLevel = obj.useraccesslevel |
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| 206 | if obj.minsample: |
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| 207 | View Code Duplication | attrs.MinimumSamplingInterval = obj.minsample |
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| 208 | if obj.dimensions: |
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| 209 | attrs.ArrayDimensions = obj.dimensions |
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| 210 | node.NodeAttributes = attrs |
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| 211 | res = self.server.add_nodes([node]) |
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| 212 | self._add_refs(obj) |
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| 213 | return res[0].AddedNodeId |
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| 214 | |||
| 215 | def add_reference(self, obj): |
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| 216 | node = self._get_node(obj) |
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| 217 | attrs = ua.ReferenceTypeAttributes() |
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| 218 | if obj.desc: |
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| 219 | View Code Duplication | attrs.Description = ua.LocalizedText(obj.desc) |
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| 220 | attrs.DisplayName = ua.LocalizedText(obj.displayname) |
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| 221 | if obj. inversename: |
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| 222 | attrs.InverseName = ua.LocalizedText(obj.inversename) |
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| 223 | if obj.abstract: |
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| 224 | attrs.IsAbstract = obj.abstract |
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| 225 | if obj.symmetric: |
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| 226 | attrs.Symmetric = obj.symmetric |
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| 227 | node.NodeAttributes = attrs |
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| 228 | res = self.server.add_nodes([node]) |
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| 229 | self._add_refs(obj) |
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| 230 | return res[0].AddedNodeId |
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| 231 | |||
| 232 | def add_datatype(self, obj): |
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| 233 | node = self._get_node(obj) |
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| 234 | attrs = ua.DataTypeAttributes() |
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| 235 | if obj.desc: |
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| 236 | attrs.Description = ua.LocalizedText(obj.desc) |
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| 237 | attrs.DisplayName = ua.LocalizedText(obj.displayname) |
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| 238 | View Code Duplication | if obj.abstract: |
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| 239 | attrs.IsAbstract = obj.abstract |
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| 240 | node.NodeAttributes = attrs |
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| 241 | res = self.server.add_nodes([node]) |
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| 242 | self._add_refs(obj) |
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| 243 | return res[0].AddedNodeId |
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| 244 | |||
| 245 | def _add_refs(self, obj): |
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| 246 | if not obj.refs: |
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| 247 | return |
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| 248 | refs = [] |
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| 249 | for data in obj.refs: |
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| 250 | ref = ua.AddReferencesItem() |
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| 251 | ref.IsForward = True |
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| 252 | ref.ReferenceTypeId = self.to_nodeid(data.reftype) |
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| 253 | ref.SourceNodeId = ua.NodeId.from_string(obj.nodeid) |
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| 254 | ref.TargetNodeClass = ua.NodeClass.DataType |
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| 255 | ref.TargetNodeId = ua.NodeId.from_string(data.target) |
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| 256 | refs.append(ref) |
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| 257 | self.server.add_references(refs) |
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| 258 |
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