class MultiProcessingLog(logging.Handler):
def __init__(self, name, mode, maxsize, rotate):
logging.Handler.__init__(self)
#self._handler = RotatingFileHandler(name, mode, maxsize, rotate)
formatter = logging.Formatter(
"[%(asctime)s.%(msecs)03d] %(filename)16s Line %(lineno)3d %(funcName)s():\t %(message)s"
)
self._handler = RainbowLoggingHandler(sys.stderr,
color_funcName=('green', 'none',
True))
self._handler.setFormatter(formatter)
self.queue = multiprocessing.Queue(-1)
t = threading.Thread(target=self.receive)
t.daemon = True
t.start()
def setFormatter(self, fmt):
logging.Handler.setFormatter(self, fmt)
self._handler.setFormatter(fmt)
def receive(self):
while True:
try:
record = self.queue.get()
self._handler.emit(record)
except (KeyboardInterrupt, SystemExit):
raise
except EOFError:
break
except:
traceback.print_exc(file=sys.stderr)
def send(self, s):
self.queue.put_nowait(s)
def _format_record(self, record):
# ensure that exc_info and args
# have been stringified. Removes any chance of
# unpickleable things inside and possibly reduces
# message size sent over the pipe
if record.args:
record.msg = record.msg % record.args
record.args = None
if record.exc_info:
dummy = self.format(record)
record.exc_info = None
return record
def emit(self, record):
try:
s = self._format_record(record)
self.send(s)
except (KeyboardInterrupt, SystemExit):
raise
except:
self.handleError(record)
def close(self):
self._handler.close()
logging.Handler.close(self)
