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import sys
import logging
import traceback
from cStringIO import StringIO
import dbus
import dbus.dbus_bindings
import gobject
__console = None
__console_id = None
class Handler(logging.Handler):
def __init__(self, console, console_id):
logging.Handler.__init__(self)
self._console_id = console_id
self._console = console
self._records = []
self._idle_id = 0
bus = dbus.SessionBus()
self._console_started = dbus.dbus_bindings.bus_name_has_owner(
bus._connection, 'org.laptop.Sugar.Console')
bus.add_signal_receiver(self.__name_owner_changed,
dbus_interface = "org.freedesktop.DBus",
signal_name = "NameOwnerChanged")
def __name_owner_changed(self, service_name, old_name, new_name):
if service_name == 'org.laptop.Sugar.Console':
if new_name != None:
self._console_started = True
self._idle_id = gobject.idle_add(self._log)
else:
self._console_started = False
def _log(self):
for record in self._records:
self._console.log(record.levelno, self._console_id, record.msg)
self._records = []
self._idle_id = 0
return False
def emit(self, record):
self._records.append(record)
if self._console_started and self._idle_id == 0:
self._idle_id = gobject.idle_add(self._log)
def __exception_handler(typ, exc, tb):
trace = StringIO()
traceback.print_exception(typ, exc, tb, None, trace)
__console.log(logging.ERROR, __console_id, trace.getvalue())
def start(console_id, console = None):
root_logger = logging.getLogger('')
root_logger.setLevel(logging.DEBUG)
if console == None:
bus = dbus.SessionBus()
proxy_obj = bus.get_object('org.laptop.Sugar.Console',
'/org/laptop/Sugar/Console')
console = dbus.Interface(proxy_obj, 'org.laptop.Sugar.Console')
root_logger.addHandler(Handler(console, console_id))
global __console
global __console_id
__console = console
__console_id = console_id
sys.excepthook = __exception_handler
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