service.py 文件源码

def start_device_logging(self, devicefile):
        self.logger.info(_("received request to start logging on device {}").format(
            devicefile))
        # create the object path name on the bus name
        objectpath = "/".join([CO2MONITOR_OBJECTPATH,
            utils.devicefile2objectname(devicefile)])
        # check if device is already monitored
        monitored_devices = self.get_monitored_devices_objects()
        if objectpath in monitored_devices:
            self.logger.warning(" ".join([
            _("There is already a logging thread for device {}."),
            _("This is odd... I better do nothing.")
            ]).format(devicefile))
            return False
        else:
            try:
                thread = LogThread(devicefile = devicefile) # logger object
                self.logger.info(_("starting logging thread for device {}").format(
                    devicefile))
                # same logger as service
                thread.set_logger(self.logger)
                # same config as service
                thread.set_config(self.config)
                thread.daemon = True # let this thread be a daemon thread
                thread.start()
            except OSError:
                self.logger.critical(_("Could not access the device file '{}'."
                    ).format(devicefile))
                return False
            except:
                self.logger.critical(_(
                    "Something went wrong with device file '{}'."
                    ).format(devicefile))
                return False
            return True