日期作者版本备注2020-12-7dingbinv1.0

Dblogger: a powerful Python library supporting multi process and multi thread printing logs

Dblogger project implements a both multi-threads-safe and multi-process-safe logger library named dblogger in python language. It works well and has stable function and powerful performance,especially in multithreaded or multiprocessed Python programs.

Main interfaces of dblogger are implemented in file: smartlogger/utils.dblogger.py .

dblogger configuration file is: smartlogger/conf/logger.conf.

The dblogger configuration file has the following format:[loggers]

keys=root,SafeLogger

[handlers]

keys=consoleHandler,fileHandler,rotatingFileHandler,timedRotatingFileHandler,truncateTimedRotatingFileHandler

[formatters]

keys=fmt0

[logger_root]

level=INFO

handlers=consoleHandler

[logger_SafeLogger]

level=INFO

#handlers=consoleHandler,truncateTimedRotatingFileHandler

handlers=truncateTimedRotatingFileHandler

qualname=SafeLogger

propagate=0

[handler_consoleHandler]

class=StreamHandler

args=(sys.stdout,)

level=INFO

formatter=fmt0

[handler_fileHandler]

class=FileHandler

args=("logs/app.log", "a")

level=INFO

formatter=fmt0

[handler_rotatingFileHandler]

class=handlers.RotatingFileHandler

args=("logs/app.log", 'a',100*1024*1024, 100)

level=INFO

formatter=fmt0

[handler_timedRotatingFileHandler]

class=handlers.TimedRotatingFileHandler

args=("logs/app.log", 'm', 1, 3600)

level=INFO

formatter=fmt0

[handler_truncateTimedRotatingFileHandler]

class=smartlogger.utils.logutils.truncate_timed_rotating_filehandler.TruncateTimedRotatingFileHandler

args=("logs/app.log", 'm', 1, 3600)

level=INFO

formatter=fmt0

[formatter_fmt0]

format=[%(asctime)s] [%(msecs)d,process(%(process)d),thread(%(thread)d),%(filename)s:%(lineno)d -- %(funcName)s() %(levelname)s] [%(message)s]

datefmt=%Y-%m-%d %H:%M:%S

TruncateTimedRotatingFileHandler was so important that it implements the following features: every few minutes or hours, it generates the log file name with a specific meaning, and then outputs the log content to the log file with the corresponding name. It was a truncated time rotating file handler and it's so useful.

You can run dblogger demo examples like this:python -m smartlogger.loggerdemo.simpleloggerdemo

python -m smartlogger.utils.logutils.dbloggerdemo

Then you will see the rotating log files generated under directory: smartlogger/logs after run above demo commands. And the log file names may be like: app.log and app.log.2020-11-08_01-01 and so on.

See GitHub address: https://github.com/apollo008/dblogger for source code and details.