ModelManager.open_xml() - Code Metrics - Inspection of "start work on custom file to keep track of referen..." - FreeOpcUa/opcua-modeler - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#51)

by Olivier

created 2017-07-02 20:01 UTC

ModelManager.open_xml() A

↳ Parent: ModelManager

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	10
rs	9.4285
cc	2

import logging
import os
import xml.etree.ElementTree as Et


from PyQt5.QtCore import pyqtSignal, QObject, QSettings

from opcua import ua
from opcua import copy_node
from opcua.common.instantiate import instantiate
from opcua.common.ua_utils import get_node_children

from uawidgets.utils import trycatchslot

from uamodeler.server_manager import ServerManager

logger = logging.getLogger(__name__)


class ModelManager(QObject):
    """
    Manage our model. loads xml, start and close, add nodes
    No dialogs at that level, only api
    """

    error = pyqtSignal(Exception)

    def __init__(self, modeler):
        QObject.__init__(self, modeler)
        self.modeler = modeler
        self.server_mgr = ServerManager(self.modeler.ui.actionUseOpenUa)
        self.new_nodes = []  # the added nodes we will save
        self.current_path = None
        self.settings = QSettings()
        self.modified = False
        self.modeler.attrs_ui.attr_written.connect(self._attr_written)

    def delete_node(self, node):
        if node:
            nodes = get_node_children(node)
            for n in nodes:
                n.delete()
                if n in self.new_nodes:
                    self.new_nodes.remove(n)
            self.modeler.tree_ui.remove_current_item()

    def paste_node(self, node):
        parent = self.modeler.get_current_node()
        try:
            added_nodes = copy_node(parent, node)
        except Exception as ex:
            self.show_error(ex)
            raise
        self.new_nodes.extend(added_nodes)
        self.modeler.tree_ui.reload_current()
        self.modeler.show_refs()
        self.modified = True

    def close_model(self, force=False):
        if not force and self.modified:
            raise RuntimeError("Model is modified, use force to close it")
        self.modeler.actions.disable_all_actions()
        self.server_mgr.stop_server()
        self.current_path = None
        self.modified = False
        self.modeler.update_title("")
        self.modeler.clear_all_widgets()

    def new_model(self):
        if self.modified:
            raise RuntimeError("Model is modified, cannot create new model")
        del (self.new_nodes[:])  # empty list while keeping reference

        endpoint = "opc.tcp://0.0.0.0:48400/freeopcua/uamodeler/"
        logger.info("Starting server on %s", endpoint)
        self.server_mgr.start_server(endpoint)

        self.modeler.tree_ui.set_root_node(self.server_mgr.nodes.root)
        self.modeler.idx_ui.set_node(self.server_mgr.get_node(ua.ObjectIds.Server_NamespaceArray))
        self.modeler.nodesets_ui.set_server_mgr(self.server_mgr)
        self.modified = False
        self.modeler.actions.enable_model_actions()
        self.current_path = None
        self.modeler.update_title("No Name")
        return True

    def import_xml(self, path):
        new_nodes = self.server_mgr.import_xml(path)
        self.new_nodes.extend([self.server_mgr.get_node(node) for node in new_nodes])
        self.modified = True
        # we maybe should only reload the imported nodes
        self.modeler.tree_ui.reload()
        self.modeler.idx_ui.reload()
        return path

    def open_xml(self, path):
        self.new_model()
        try:
            path = self.import_xml(path)
        except:
            self.close_model(force=True)
            raise
        self.modified = False
        self.current_path = path
        self.modeler.update_title(self.current_path)

    def open(self, path):
        if path.endswith(".xml"):
            self.open_xml(path)
        else:
            self.open_ua_model(path)

    def open_ua_model(self, path):
        self.new_model()
        try:
            tree = Et.parse(path)
            root = tree.getroot()
            for ref_el in root.findall("Reference"):
                refpath = ref_el.attrib['path']
                self.modeler.nodesets_ui.import_nodeset(refpath)
            mod_el = root.find("Model")
            xmlpath = mod_el.attrib['path']
            self.open_xml(xmlpath)
        except:
            self.close_model(force=True)
            raise
        self.modified = False
        self.current_path = path
        self.modeler.update_title(self.current_path)

    def _get_path(self, path):
        if path is None:
            path = self.current_path
        if path is None:
            raise ValueError("No path is defined")
        self.current_path = os.path.splitext(path)[0] 
        self.modeler.update_title(self.current_path)
        return self.current_path

    def save_xml(self, path=None):
        path = self._get_path(path)
        path += ".xml"
        logger.info("Saving nodes to %s", path)
        logger.info("Exporting  %s nodes: %s", len(self.new_nodes), self.new_nodes)
        logger.info("and namespaces: %s ", self.server_mgr.get_namespace_array()[1:])
        uris = self.server_mgr.get_namespace_array()[1:]
        self.server_mgr.export_xml(self.new_nodes, uris, path)
        self.modified = False
        logger.info("%s saved", path)

    def save_ua_model(self, path=None):
        path = self._get_path(path)
        model_path = path + ".uamodel"
        logger.info("Saving model to %s", model_path)
        etree = Et.ElementTree(Et.Element('UAModel'))
        node_el = Et.SubElement(etree.getroot(), "Model")
        node_el.attrib["path"] = path + ".xml"
        for refpath in self.modeler.nodesets_ui.nodesets:
            node_el = Et.SubElement(etree.getroot(), "Reference")
            node_el.attrib["path"] = refpath 
        etree.write(model_path, encoding='utf-8', xml_declaration=True)

    def _after_add(self, new_nodes):
        if isinstance(new_nodes, (list, tuple)):
            self.new_nodes.extend(new_nodes)
        else:
            self.new_nodes.append(new_nodes)
        self.modeler.tree_ui.reload_current()
        self.modeler.show_refs()
        self.modified = True

    def add_method(self, *args):
        logger.info("Creating method type with args: %s", args)
        parent = self.modeler.tree_ui.get_current_node()
        new_nodes = []
        new_node = parent.add_method(*args)
        new_nodes.append(new_node)
        new_nodes.extend(new_node.get_children())
        self._after_add(new_nodes)

    def add_object_type(self, *args):
        logger.info("Creating object type with args: %s", args)
        parent = self.modeler.tree_ui.get_current_node()
        new_node = parent.add_object_type(*args)
        self._after_add(new_node)

    def add_folder(self, *args):
        parent = self.modeler.tree_ui.get_current_node()
        logger.info("Creating folder with args: %s", args)
        new_node = parent.add_folder(*args)
        self._after_add(new_node)
        return new_node

    def add_object(self, *args):
        parent = self.modeler.tree_ui.get_current_node()
        logger.info("Creating object with args: %s", args)
        nodeid, bname, otype = args
        new_nodes = instantiate(parent, otype, bname=bname, nodeid=nodeid, dname=ua.LocalizedText(bname.Name))
        self._after_add(new_nodes)
        return new_nodes

    def add_data_type(self, *args):
        parent = self.modeler.tree_ui.get_current_node()
        logger.info("Creating data type with args: %s", args)
        new_node = parent.add_data_type(*args)
        self._after_add(new_node)
        return new_node

    def add_variable(self, *args):
        parent = self.modeler.tree_ui.get_current_node()
        logger.info("Creating variable with args: %s", args)
        new_node = parent.add_variable(*args)
        self._after_add(new_node)
        return new_node

    def add_property(self, *args):
        parent = self.modeler.tree_ui.get_current_node()
        logger.info("Creating property with args: %s", args)
        self.settings.setValue("last_datatype", args[4])
        new_node = parent.add_property(*args)
        self._after_add(new_node)
        return new_node

    def add_variable_type(self, *args):
        parent = self.modeler.tree_ui.get_current_node()
        logger.info("Creating variable type with args: %s", args)
        nodeid, bname, datatype = args
        new_node = parent.add_variable_type(nodeid, bname, datatype.nodeid)
        self._after_add(new_node)
        return new_node

    @trycatchslot
    def _attr_written(self, attr, dv):
        self.modified = True
        if attr == ua.AttributeIds.BrowseName:
            self.modeler.tree_ui.update_browse_name_current_item(dv.Value.Value)
        elif attr == ua.AttributeIds.DisplayName:
            self.modeler.tree_ui.update_display_name_current_item(dv.Value.Value)


1			import logging
2			import os
3			import xml.etree.ElementTree as Et
4
5
6			from PyQt5.QtCore import pyqtSignal, QObject, QSettings
7
8			from opcua import ua
9			from opcua import copy_node
10			from opcua.common.instantiate import instantiate
11			from opcua.common.ua_utils import get_node_children
12
13			from uawidgets.utils import trycatchslot
14
15			from uamodeler.server_manager import ServerManager
16
17			logger = logging.getLogger(__name__)
18
19
20			class ModelManager(QObject):
21			"""
22			Manage our model. loads xml, start and close, add nodes
23			No dialogs at that level, only api
24			"""
25
26			error = pyqtSignal(Exception)
27
28			def __init__(self, modeler):
29			QObject.__init__(self, modeler)
30			self.modeler = modeler
31			self.server_mgr = ServerManager(self.modeler.ui.actionUseOpenUa)
32			self.new_nodes = [] # the added nodes we will save
33			self.current_path = None
34			self.settings = QSettings()
35			self.modified = False
36			self.modeler.attrs_ui.attr_written.connect(self._attr_written)
37
38			def delete_node(self, node):
39			if node:
40			nodes = get_node_children(node)
41			for n in nodes:
42			n.delete()
43			if n in self.new_nodes:
44			self.new_nodes.remove(n)
45			self.modeler.tree_ui.remove_current_item()
46
47			def paste_node(self, node):
48			parent = self.modeler.get_current_node()
49			try:
50			added_nodes = copy_node(parent, node)
51			except Exception as ex:
52			self.show_error(ex)
53			raise
54			self.new_nodes.extend(added_nodes)
55			self.modeler.tree_ui.reload_current()
56			self.modeler.show_refs()
57			self.modified = True
58
59			def close_model(self, force=False):
60			if not force and self.modified:
61			raise RuntimeError("Model is modified, use force to close it")
62			self.modeler.actions.disable_all_actions()
63			self.server_mgr.stop_server()
64			self.current_path = None
65			self.modified = False
66			self.modeler.update_title("")
67			self.modeler.clear_all_widgets()
68
69			def new_model(self):
70			if self.modified:
71			raise RuntimeError("Model is modified, cannot create new model")
72			del (self.new_nodes[:]) # empty list while keeping reference
73
74			endpoint = "opc.tcp://0.0.0.0:48400/freeopcua/uamodeler/"
75			logger.info("Starting server on %s", endpoint)
76			self.server_mgr.start_server(endpoint)
77
78			self.modeler.tree_ui.set_root_node(self.server_mgr.nodes.root)
79			self.modeler.idx_ui.set_node(self.server_mgr.get_node(ua.ObjectIds.Server_NamespaceArray))
80			self.modeler.nodesets_ui.set_server_mgr(self.server_mgr)
81			self.modified = False
82			self.modeler.actions.enable_model_actions()
83			self.current_path = None
84			self.modeler.update_title("No Name")
85			return True
86
87			def import_xml(self, path):
88			new_nodes = self.server_mgr.import_xml(path)
89			self.new_nodes.extend([self.server_mgr.get_node(node) for node in new_nodes])
90			self.modified = True
91			# we maybe should only reload the imported nodes
92			self.modeler.tree_ui.reload()
93			self.modeler.idx_ui.reload()
94			return path
95
96			def open_xml(self, path):
97			self.new_model()
98			try:
99			path = self.import_xml(path)
100			except:
101			self.close_model(force=True)
102			raise
103			self.modified = False
104			self.current_path = path
105			self.modeler.update_title(self.current_path)
106
107			def open(self, path):
108			if path.endswith(".xml"):
109			self.open_xml(path)
110			else:
111			self.open_ua_model(path)
112
113			def open_ua_model(self, path):
114			self.new_model()
115			try:
116			tree = Et.parse(path)
117			root = tree.getroot()
118			for ref_el in root.findall("Reference"):
119			refpath = ref_el.attrib['path']
120			self.modeler.nodesets_ui.import_nodeset(refpath)
121			mod_el = root.find("Model")
122			xmlpath = mod_el.attrib['path']
123			self.open_xml(xmlpath)
124			except:
125			self.close_model(force=True)
126			raise
127			self.modified = False
128			self.current_path = path
129			self.modeler.update_title(self.current_path)
130
131			def _get_path(self, path):
132			if path is None:
133			path = self.current_path
134			if path is None:
135			raise ValueError("No path is defined")
136			self.current_path = os.path.splitext(path)[0]
137			self.modeler.update_title(self.current_path)
138			return self.current_path
139
140			def save_xml(self, path=None):
141			path = self._get_path(path)
142			path += ".xml"
143			logger.info("Saving nodes to %s", path)
144			logger.info("Exporting %s nodes: %s", len(self.new_nodes), self.new_nodes)
145			logger.info("and namespaces: %s ", self.server_mgr.get_namespace_array()[1:])
146			uris = self.server_mgr.get_namespace_array()[1:]
147			self.server_mgr.export_xml(self.new_nodes, uris, path)
148			self.modified = False
149			logger.info("%s saved", path)
150
151			def save_ua_model(self, path=None):
152			path = self._get_path(path)
153			model_path = path + ".uamodel"
154			logger.info("Saving model to %s", model_path)
155			etree = Et.ElementTree(Et.Element('UAModel'))
156			node_el = Et.SubElement(etree.getroot(), "Model")
157			node_el.attrib["path"] = path + ".xml"
158			for refpath in self.modeler.nodesets_ui.nodesets:
159			node_el = Et.SubElement(etree.getroot(), "Reference")
160			node_el.attrib["path"] = refpath
161			etree.write(model_path, encoding='utf-8', xml_declaration=True)
162
163			def _after_add(self, new_nodes):
164			if isinstance(new_nodes, (list, tuple)):
165			self.new_nodes.extend(new_nodes)
166			else:
167			self.new_nodes.append(new_nodes)
168			self.modeler.tree_ui.reload_current()
169			self.modeler.show_refs()
170			self.modified = True
171
172			def add_method(self, *args):
173			logger.info("Creating method type with args: %s", args)
174			parent = self.modeler.tree_ui.get_current_node()
175			new_nodes = []
176			new_node = parent.add_method(*args)
177			new_nodes.append(new_node)
178			new_nodes.extend(new_node.get_children())
179			self._after_add(new_nodes)
180
181			def add_object_type(self, *args):
182			logger.info("Creating object type with args: %s", args)
183			parent = self.modeler.tree_ui.get_current_node()
184			new_node = parent.add_object_type(*args)
185			self._after_add(new_node)
186
187			def add_folder(self, *args):
188			parent = self.modeler.tree_ui.get_current_node()
189			logger.info("Creating folder with args: %s", args)
190			new_node = parent.add_folder(*args)
191			self._after_add(new_node)
192			return new_node
193
194			def add_object(self, *args):
195			parent = self.modeler.tree_ui.get_current_node()
196			logger.info("Creating object with args: %s", args)
197			nodeid, bname, otype = args
198			new_nodes = instantiate(parent, otype, bname=bname, nodeid=nodeid, dname=ua.LocalizedText(bname.Name))
199			self._after_add(new_nodes)
200			return new_nodes
201
202			def add_data_type(self, *args):
203			parent = self.modeler.tree_ui.get_current_node()
204			logger.info("Creating data type with args: %s", args)
205			new_node = parent.add_data_type(*args)
206			self._after_add(new_node)
207			return new_node
208
209			def add_variable(self, *args):
210			parent = self.modeler.tree_ui.get_current_node()
211			logger.info("Creating variable with args: %s", args)
212			new_node = parent.add_variable(*args)
213			self._after_add(new_node)
214			return new_node
215
216			def add_property(self, *args):
217			parent = self.modeler.tree_ui.get_current_node()
218			logger.info("Creating property with args: %s", args)
219			self.settings.setValue("last_datatype", args[4])
220			new_node = parent.add_property(*args)
221			self._after_add(new_node)
222			return new_node
223
224			def add_variable_type(self, *args):
225			parent = self.modeler.tree_ui.get_current_node()
226			logger.info("Creating variable type with args: %s", args)
227			nodeid, bname, datatype = args
228			new_node = parent.add_variable_type(nodeid, bname, datatype.nodeid)
229			self._after_add(new_node)
230			return new_node
231
232			@trycatchslot
233			def _attr_written(self, attr, dv):
234			self.modified = True
235			if attr == ua.AttributeIds.BrowseName:
236			self.modeler.tree_ui.update_browse_name_current_item(dv.Value.Value)
237			elif attr == ua.AttributeIds.DisplayName:
238			self.modeler.tree_ui.update_display_name_current_item(dv.Value.Value)
239

FreeOpcUa / opcua-modeler

Pull Request — master (#51)

ModelManager.open_xml() A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

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