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#!/usr/bin/python -u
import gobject
import dbus
import dbus.service
import dbus.mainloop.glib
import os
import os.path as path
import Openbmc
import settings_file as s
DBUS_NAME = 'org.openbmc.settings.Host'
OBJ_NAME = '/org/openbmc/settings/host0'
CONTROL_INTF = 'org.openbmc.Settings'
class HostSettingsObject(Openbmc.DbusProperties):
def __init__(self, bus, name, settings, path):
Openbmc.DbusProperties.__init__(self)
dbus.service.Object.__init__(self, bus, name)
self.path = path
if not os.path.exists(path):
os.mkdir(path)
# Listen to changes in the property values and sync them to the BMC
bus.add_signal_receiver(self.settings_signal_handler,
dbus_interface = "org.freedesktop.DBus.Properties",
signal_name = "PropertiesChanged",
path = "/org/openbmc/settings/host0")
# Create the dbus properties
for i in settings['host'].iterkeys():
shk = settings['host'][i]
self.set_settings_property(shk['name'],
shk['type'],
shk['default'])
def get_bmc_value(self, name):
try:
with open(path.join(self.path, name), 'r') as f:
return f.read()
except (IOError):
pass
return None
# Create dbus properties based on bmc value. This will be either a value
# previously set, or the default file value if the BMC value does not exist.
def set_settings_property(self, name, type, value):
bmcv = self.get_bmc_value(name)
if bmcv:
value = bmcv
if type=="i":
self.Set(DBUS_NAME, name, value)
elif type=="s":
self.Set(DBUS_NAME, name, str(value))
# Save the settings to the BMC. This will write the settings value in
# individual files named by the property name to the BMC.
def set_system_settings(self, name, value):
bmcv = self.get_bmc_value(name)
if bmcv != value:
filepath = path.join(self.path, name)
with open(filepath, 'w') as f:
f.write(str(value))
# Signal handler for when one ore more settings properties were updated.
# This will sync the changes to the BMC.
def settings_signal_handler(self, interface_name, changed_properties, invalidated_properties):
for name, value in changed_properties.items():
self.set_system_settings(name, value)
# Placeholder signal. Needed to register the settings interface.
@dbus.service.signal(DBUS_NAME, signature='s')
def SettingsUpdated(self, sname):
pass
if __name__ == '__main__':
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
bus = Openbmc.getDBus()
name = dbus.service.BusName(DBUS_NAME, bus)
obj = HostSettingsObject(bus, OBJ_NAME, s.SETTINGS, "/var/lib/obmc/")
mainloop = gobject.MainLoop()
print "Running HostSettingsService"
mainloop.run()
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