6a3f0bd1b3b0ae907190aee84122f4a3b1d318e6
[collecty.git] / src / collecty / bus.py
1 #!/usr/bin/python
2 ###############################################################################
3 #                                                                             #
4 # collecty - A system statistics collection daemon for IPFire                 #
5 # Copyright (C) 2015 IPFire development team                                  #
6 #                                                                             #
7 # This program is free software: you can redistribute it and/or modify        #
8 # it under the terms of the GNU General Public License as published by        #
9 # the Free Software Foundation, either version 3 of the License, or           #
10 # (at your option) any later version.                                         #
11 #                                                                             #
12 # This program is distributed in the hope that it will be useful,             #
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
15 # GNU General Public License for more details.                                #
16 #                                                                             #
17 # You should have received a copy of the GNU General Public License           #
18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
19 #                                                                             #
20 ###############################################################################
21
22 import dbus
23 import dbus.mainloop.glib
24 import dbus.service
25 import gobject
26 import threading
27
28 from constants import *
29 from i18n import _
30
31 import logging
32 log = logging.getLogger("collecty.bus")
33 log.propagate = 1
34
35 # Initialise the glib main loop
36 dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
37 dbus.mainloop.glib.threads_init()
38
39 class Bus(threading.Thread):
40         def __init__(self, collecty):
41                 threading.Thread.__init__(self)
42                 self.daemon = True
43
44                 self.collecty = collecty
45
46                 # Initialise the main loop
47                 gobject.threads_init()
48                 self.loop = gobject.MainLoop()
49
50                 # Register the GraphGenerator interface
51                 self.generator = GraphGenerator(self.collecty)
52
53         def run(self):
54                 log.debug(_("Bus thread has started"))
55
56                 # Run the main loop
57                 self.loop.run()
58
59         def shutdown(self):
60                 log.debug(_("Stopping bus thread"))
61
62                 # End the main loop
63                 self.loop.quit()
64
65                 # Return when this thread has finished
66                 return self.join()
67
68
69 class GraphGenerator(dbus.service.Object):
70         def __init__(self, collecty):
71                 bus_name = dbus.service.BusName(BUS_DOMAIN, bus=dbus.SystemBus())
72                 dbus.service.Object.__init__(self, bus_name, "/%s" % self.__class__.__name__)
73
74                 self.collecty = collecty
75
76         @dbus.service.method(BUS_DOMAIN, in_signature="sa{sv}", out_signature="ay")
77         def GenerateGraph(self, template_name, kwargs):
78                 """
79                         Returns a graph generated from the given template and object.
80                 """
81                 graph = self.collecty.generate_graph(template_name, **kwargs)
82
83                 return dbus.ByteArray(graph or [])
84
85         @dbus.service.method(BUS_DOMAIN, in_signature="", out_signature="as")
86         def ListTemplates(self):
87                 """
88                         Returns a list of all available templates
89                 """
90                 return [t.name for t in self.collecty.templates]