105 lines
3.3 KiB
Python
105 lines
3.3 KiB
Python
# -*- encoding: utf8 -*-
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#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2017 Marek Marczykowski-Górecki
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# <marmarek@invisiblethingslab.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with this program; if not, see <http://www.gnu.org/licenses/>.
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'''VM Labels'''
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import qubesmgmt.exc
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class Label(object):
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'''Label definition for virtual machines
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Label specifies colour of the padlock displayed next to VM's name.
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:param str color: colour specification as in HTML (``#abcdef``)
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:param str name: label's name like "red" or "green"
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'''
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def __init__(self, app, name):
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self.app = app
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self._name = name
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self._color = None
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@property
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def color(self):
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'''color specification as in HTML (``#abcdef``)'''
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if self._color is None:
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try:
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qubesd_response = self.app.qubesd_call(
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'dom0', 'mgmt.label.Get', self._name, None)
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except qubesmgmt.exc.QubesDaemonNoResponseError:
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raise AttributeError
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self._color = qubesd_response.decode()
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return self._color
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@property
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def name(self):
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'''label's name like "red" or "green"'''
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return self._name
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def __str__(self):
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return self._name
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class LabelsCollection(object):
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'''Collection of VMs objects'''
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def __init__(self, app):
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self.app = app
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self._label_list = None
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self._label_objects = {}
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def clear_cache(self):
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'''Clear cached list of labels'''
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self._label_list = None
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def refresh_cache(self, force=False):
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'''Refresh cached list of VMs'''
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if not force and self._label_list is not None:
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return
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label_list_data = self.app.qubesd_call('dom0', 'mgmt.label.List')
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label_list_data = label_list_data.decode('ascii')
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assert label_list_data[-1] == '\n'
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self._label_list = label_list_data[:-1].splitlines()
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for name, label in list(self._label_objects.items()):
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if label.name not in self._label_list:
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# Label no longer exists
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del self._label_objects[name]
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def __getitem__(self, item):
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if item not in self:
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raise KeyError(item)
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if item not in self._label_objects:
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self._label_objects[item] = Label(self.app, item)
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return self._label_objects[item]
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def __contains__(self, item):
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self.refresh_cache()
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return item in self._label_list
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def __iter__(self):
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self.refresh_cache()
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for vm in self._label_list:
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yield self[vm]
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def keys(self):
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'''Get list of label names.'''
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self.refresh_cache()
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return self._label_list.keys()
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