buffet_dbus_helper.py revision a2b3d9fee5ae16d22819168daa5d1e2df6e63e0d 
1# Copyright 2014 The Chromium OS Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5import dbus
6
7from autotest_lib.client.cros import dbus_util
8
9MANAGER_INTERFACE = 'org.chromium.Buffet.Manager'
10
11class BuffetDBusHelper(object):
12    """Delegate representing an instance of buffet."""
13
14    def __init__(self):
15        """Construct a BuffetDBusHelper.
16
17        You should probably use get_helper() above rather than call this
18        directly.
19
20        @param manager_proxy: DBus proxy for the Manager object.
21
22        """
23        bus = dbus.SystemBus()
24        manager_proxy = bus.get_object('org.chromium.Buffet',
25                                       '/org/chromium/Buffet/Manager')
26        self.manager = dbus.Interface(manager_proxy, MANAGER_INTERFACE)
27        self.properties = dbus.Interface(manager_proxy,
28                                         'org.freedesktop.DBus.Properties')
29
30    def __getattr__(self, name):
31        components = name.split('_')
32        name = ''.join(x.title() for x in components)
33        dbus_value = self.properties.Get(MANAGER_INTERFACE, name)
34        return dbus_util.dbus2primitive(dbus_value)
35