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116 lines
2.9 KiB
Python
116 lines
2.9 KiB
Python
import sys, os
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import logging
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import traceback
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from cStringIO import StringIO
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import dbus
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import dbus.dbus_bindings
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import gobject
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__queue = None
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CONSOLE_BUS_NAME = 'org.laptop.Sugar.Console'
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CONSOLE_OBJECT_PATH = '/org/laptop/Sugar/Console'
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CONSOLE_IFACE = 'org.laptop.Sugar.Console'
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class MessageQueue:
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def __init__(self, console, console_id):
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self._idle_id = 0
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self._console = console
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self._console_id = console_id
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self._levels = []
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self._messages = []
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self._bus = dbus.SessionBus()
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if self._console == None:
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con = self._bus._connection
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if dbus.dbus_bindings.bus_name_has_owner(con, CONSOLE_BUS_NAME):
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self.setup_console()
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else:
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self._bus.add_signal_receiver(
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self.__name_owner_changed,
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dbus_interface = "org.freedesktop.DBus",
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signal_name = "NameOwnerChanged")
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def setup_console(self):
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proxy_obj = self._bus.get_object(CONSOLE_BUS_NAME,
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CONSOLE_OBJECT_PATH)
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self._console = dbus.Interface(proxy_obj, CONSOLE_IFACE)
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self._queue_log()
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def __name_owner_changed(self, service_name, old_name, new_name):
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if service_name == CONSOLE_BUS_NAME:
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if new_name != None:
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self.setup_console()
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else:
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self._console = None
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def _queue_log(self):
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if self._idle_id == 0:
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self._idle_id = gobject.idle_add(self._log)
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def _log(self):
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# Use stderr for now until dbus issues get sorted out
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use_dbus = False
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if use_dbus:
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if self._console == None or len(self._messages) == 0:
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self._idle_id = 0
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return False
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if isinstance(self._console, dbus.Interface):
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self._console.log(self._console_id, self._levels,
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self._messages, timeout = 1000)
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else:
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self._console.log(self._console_id, self._levels,
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self._messages)
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else:
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for x in range(0, len(self._messages)):
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level = self._levels[x]
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msg = self._messages[x]
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prog = os.path.basename(sys.argv[0])
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fmt = "%s (%s): Level %s - %s\n" % (prog, os.getpid(), level, msg)
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fmt = fmt.encode("utf8")
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sys.stderr.write(fmt)
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self._levels = []
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self._messages = []
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self._idle_id = 0
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return False
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def append_record(self, record):
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self.append(record.levelno, record.msg)
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def append(self, level, message):
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self._levels.append(level)
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self._messages.append(message)
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self._queue_log()
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class Handler(logging.Handler):
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def __init__(self, queue):
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logging.Handler.__init__(self)
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self._queue = queue
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def emit(self, record):
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self._queue.append_record(record)
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def __exception_handler(typ, exc, tb):
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trace = StringIO()
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traceback.print_exception(typ, exc, tb, None, trace)
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print >> sys.stderr, trace.getvalue()
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__queue.append(logging.ERROR, trace.getvalue())
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def start(console_id, console = None):
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queue = MessageQueue(console, console_id)
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root_logger = logging.getLogger('')
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root_logger.setLevel(logging.DEBUG)
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root_logger.addHandler(Handler(queue))
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global __queue
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__queue = queue
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sys.excepthook = __exception_handler
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