forked from M-Labs/artiq
66 lines
2.5 KiB
Python
66 lines
2.5 KiB
Python
import logging
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import logging.handlers
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from artiq.protocols.sync_struct import Notifier
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from artiq.protocols.logging import SourceFilter
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class LogForwarder(logging.Handler):
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def __init__(self, *args, **kwargs):
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logging.Handler.__init__(self, *args, **kwargs)
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self.callback = None
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self.setFormatter(logging.Formatter("%(name)s:%(message)s"))
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def emit(self, record):
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if self.callback is not None:
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message = self.format(record)
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self.callback((record.levelno, record.source, record.created,
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message))
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def log_args(parser):
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group = parser.add_argument_group("logging")
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group.add_argument("-v", "--verbose", default=0, action="count",
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help="increase logging level of the master process")
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group.add_argument("-q", "--quiet", default=0, action="count",
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help="decrease logging level of the master process")
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group.add_argument("--log-file", default="",
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help="store logs in rotated files; set the "
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"base filename")
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group.add_argument("--log-max-size", type=int, default=1024,
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help="maximum size of each log file in KiB "
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"(default: %(default)d)")
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group.add_argument("--log-backup-count", type=int, default=6,
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help="number of old log files to keep (.<n> is added "
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"to the base filename (default: %(default)d)")
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def init_log(args):
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root_logger = logging.getLogger()
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root_logger.setLevel(logging.NOTSET) # we use our custom filter only
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flt = SourceFilter(logging.WARNING + args.quiet*10 - args.verbose*10,
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"master")
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handlers = []
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console_handler = logging.StreamHandler()
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console_handler.setFormatter(logging.Formatter(
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"%(levelname)s:%(source)s:%(name)s:%(message)s"))
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handlers.append(console_handler)
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if args.log_file:
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file_handler = logging.handlers.RotatingFileHandler(
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args.log_file,
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maxBytes=args.log_max_size*1024,
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backupCount=args.log_backup_count)
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file_handler.setFormatter(logging.Formatter(
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"%(asctime)s %(levelname)s:%(source)s:%(name)s:%(message)s"))
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handlers.append(file_handler)
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log_forwarder = LogForwarder()
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handlers.append(log_forwarder)
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for handler in handlers:
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handler.addFilter(flt)
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root_logger.addHandler(handler)
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return log_forwarder
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