+ args.mountpoint = os.path.realpath(args.mountpoint)
+ if args.logfile:
+ args.logfile = os.path.realpath(args.logfile)
+
+ # Daemonize as early as possible, so we don't accidentally close
+ # file descriptors we're using.
+ if not (args.exec_args or args.foreground):
+ os.chdir(args.mountpoint)
+ daemon_ctx = daemon.DaemonContext(working_directory='.')
+ daemon_ctx.open()
+ else:
+ daemon_ctx = None
+
+ # Configure a logger based on command-line switches.
+ # If we're using a contemporary Python SDK (mid-August 2014),
+ # configure the arvados hierarchy logger.
+ # Otherwise, configure the program root logger.
+ base_logger = getattr(arvados, 'logger', None)
+
+ if args.logfile:
+ log_handler = logging.FileHandler(args.logfile)
+ elif daemon_ctx:
+ log_handler = logging.NullHandler()
+ elif base_logger:
+ log_handler = arvados.log_handler
+ else:
+ log_handler = logging.StreamHandler()