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import dbus
import dbus.service
import dbus.gobject_service
import time
import logging
import threading
import thread
def NoneFunction(*args):
return
class TubeBox:
""" A TubeBox is a box that either contains a Tube or does not."""
def __init__(self):
self.tube = None
self.is_initiator = None
self._listeners = []
def register_listener(self, L):
self._listeners.append(L)
if self.tube is not None:
L(self.tube, self.is_initiator)
def insert_tube(self, tube, is_initiator):
self.tube = tube
self.is_initiator = is_initiator
for L in self._listeners:
L(tube, is_initiator)
class TimeHandler(dbus.gobject_service.ExportedGObject):
IFACE = "org.dobject.TimeHandler"
BASEPATH = "/org/dobject/TimeHandler/"
def __init__(self, name, tube_box, offset=0.0):
self.PATH = TimeHandler.BASEPATH + name
dbus.gobject_service.ExportedGObject.__init__(self)
self._logger = logging.getLogger(self.PATH)
self._tube_box = tube_box
self.tube = None
self.is_initiator = None
self.offset = offset
self._know_offset = False
self._offset_lock = threading.Lock()
self._tube_box.register_listener(self.get_tube)
def get_tube(self, tube, is_initiator):
self._logger.debug("get_tube")
self._logger.debug(str(is_initiator))
self.tube = tube
self.add_to_connection(self.tube, self.PATH)
self.is_initiator = is_initiator
self._know_offset = is_initiator
self.tube.add_signal_receiver(self.tell_time, signal_name='What_time_is_it', dbus_interface=TimeHandler.IFACE, sender_keyword='sender', path=self.PATH)
if not self._know_offset:
self.ask_time()
def time(self):
return time.time() + self.offset
def get_offset(self):
self._logger.debug("offset= " + str(self.offset))
return self.offset
def set_offset(self, offset):
self._logger.debug("set_offset " + str(self.offset))
self._offset_lock.acquire()
self.offset = offset
self._know_offset = True
self._offset_lock.release()
@dbus.service.signal(dbus_interface=IFACE, signature='d')
def What_time_is_it(self, asktime):
return
def ask_time(self):
self._logger.debug("ask_time")
self.What_time_is_it(time.time())
def tell_time(self, asktime, sender=None):
self._logger.debug("tell_time")
start_time = time.time()
try:
my_name = self.tube.get_unique_name()
if sender == my_name:
return
if self._know_offset:
self._logger.debug("telling offset")
remote = self.tube.get_object(sender, self.PATH)
start_time += self.offset
remote.receive_time(asktime, start_time, time.time() + self.offset, reply_handler=NoneFunction, error_handler=NoneFunction)
finally:
return
@dbus.service.method(dbus_interface=IFACE, in_signature='ddd', out_signature='')
def receive_time(self, asktime, start_time, finish_time):
self._logger.debug("receive_time")
rtime = time.time()
thread.start_new_thread(self._handle_incoming_time, (asktime, start_time, finish_time, rtime))
def _handle_incoming_time(self, ask, start, finish, receive):
print(self.offset)
self._offset_lock.acquire()
if not self._know_offset:
self.offset = ((start + finish)/2) - ((ask + receive)/2)
self._know_offset = True
self._offset_lock.release()
print(self.offset)
class UnorderedHandler(dbus.gobject_service.ExportedGObject):
IFACE = "org.dobject.Unordered"
BASEPATH = "/org/dobject/Unordered/"
def __init__(self, name, tube_box):
self.PATH = UnorderedHandler.BASEPATH + name
dbus.gobject_service.ExportedGObject.__init__(self)
self._logger = logging.getLogger(self.PATH)
self._tube_box = tube_box
self.tube = None
self.object = None
self._tube_box.register_listener(self.get_tube)
def get_tube(self, tube, is_initiator):
self.tube = tube
self.add_to_connection(self.tube, self.PATH)
self.tube.add_signal_receiver(self.receive_message, signal_name='send', dbus_interface=UnorderedHandler.IFACE, sender_keyword='sender', path=self.PATH)
self.tube.add_signal_receiver(self.tell_history, signal_name='ask_history', dbus_interface=UnorderedHandler.IFACE, sender_keyword='sender', path=self.PATH)
#self.tube.add_signal_receiver(self.members_changed, signal_name="MembersChanged", dbus_interface="org.freedesktop.Telepathy.Channel.Interface.Group")
self.tube.watch_participants(self.members_changed)
if self.object is not None:
self.ask_history()
def register(self, obj):
self.object = obj
if self.tube is not None:
self.ask_history()
@dbus.service.signal(dbus_interface=IFACE, signature='v')
def send(self, message):
return
def receive_message(self, message, sender=None):
if self.object is None:
self._logger.error("got message before registration")
else:
self.object.receive_message(message)
@dbus.service.signal(dbus_interface=IFACE, signature='')
def ask_history(self):
return
def tell_history(self, sender=None):
self._logger.debug("tell_history to " + str(sender))
try:
if sender == self.tube.get_unique_name():
return
if self.object is None:
self._logger.error("object not registered before tell_history")
return
remote = self.tube.get_object(sender, self.PATH)
h = self.object.get_history()
remote.receive_history(h, reply_handler=NoneFunction, error_handler=NoneFunction)
finally:
return
@dbus.service.method(dbus_interface=IFACE, in_signature = 'v', out_signature='')
def receive_history(self, hist):
if self.object is None:
self._logger.error("object not registered before receive_history")
return
self.object.add_history(hist)
"""
def members_changed(self, message, added, removed, local_pending, remote_pending, actor, reason):
added_names = self.tube.InspectHandles(telepathy.CONNECTION_HANDLE_TYPE_LIST, added)
for name in added_names:
self.tell_history(name)
"""
def members_changed(self, added, removed):
self._logger.debug("members_changed")
for (handle, name) in added:
self.tell_history(sender=name)
class UserDict(dbus.gobject_service.ExportedGObject):
IFACE = "org.dobject.UserDict"
BASEPATH = "/org/dobject/UserDict/"
_thedict = {}
def __init__(self, name, tube_conn):
self.PATH = UserDict.BASEPATH + name
dbus.gobject_service.ExportedGObject.__init__(self, tube_conn, self.PATH)
self._logger = logging.getLogger(self.PATH)
self.tube = tube_conn
self.tube.add_signal_receiver(self.receive_value, signal_name='set_my_value', dbus_interface=UserDict.IFACE, sender_keyword='sender', path=self.PATH)
self.tube.add_signal_receiver(self.members_changed, signal_name="MembersChanged", dbus_interface="org.freedesktop.Telepathy.Channel.Interface.Group")
@dbus.service.signal(dbus_interface=IFACE)
def set_my_value(self, val):
self._thedict[self.tube.get_unique_name()] = val
return
def receive_value(self, val, sender=None):
if self.object is None:
self._logger.error("got message without sender")
else:
self._thedict[sender] = val
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