# monitor_contents_changes

#

# Copyright (C) 2012-2017 Intel Corporation. All rights reserved.

#

# This program is free software; you can redistribute it and/or modify it

# under the terms and conditions of the GNU Lesser General Public License,

# version 2.1, as published by the Free Software Foundation.

#

# This program is distributed in the hope it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License

# for more details.

#

# You should have received a copy of the GNU Lesser General Public License

# along with this program; if not, write to the Free Software Foundation, Inc.,

# 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

#

# Regis Merlino <regis.merlino@intel.com>

#

import gobject

import dbus

import dbus.mainloop.glib

import json

def print_properties(props):

    print json.dumps(props, indent=4, sort_keys=True)

def properties_changed(iface, changed, invalidated, path):

    print "PropertiesChanged signal from {%s} [%s]" % (iface, path)

    print "Changed:"

    print_properties(changed)

    print "Invalidated:"

    print_properties(invalidated)

def container_update(id_list, path, interface):

    iface = interface[interface.rfind(".") + 1:]

    print "ContainerUpdateIDs signal from {%s} [%s]" % (iface, path)

    for (id_path, sys_id) in id_list:

        print "-->\t %s : %u" % (id_path, sys_id)

if __name__ == '__main__':

    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)

    bus = dbus.SessionBus()

    bus.add_signal_receiver(properties_changed,

                            bus_name="com.intel.dleyna-server",

                            signal_name = "PropertiesChanged",

                            path_keyword="path")

    bus.add_signal_receiver(container_update,

                            bus_name="com.intel.dleyna-server",

                            signal_name = "ContainerUpdateIDs",

                            path_keyword="path",

                            interface_keyword="interface")

    mainloop = gobject.MainLoop()

    mainloop.run()