python - 如何在 python 日志记录配置文件 (logging.conf) 中添加过滤器

Question

是否可以在日志配置文件中添加/使用过滤器？比如下面的代码有没有等价的设置？

import logging

# Set up loggers and handlers.
# ...

    class LevelFilter(logging.Filter):
        def __init__(self, level):
            self.level = level

        def filter(self, record):
            return record.levelno == self.level

    logFileHandler.addFilter(LevelFilter(logging.DEBUG))

用于 logging.conf 中的处理程序

[handler_consoleHandler]
class=StreamHandler
level=DEBUG
formatter=format_01
args=(sys.stdout,)

我们可以在配置文件 (logging.conf) 中为上述 python 代码编写日志过滤器作为处理程序吗？ (python代码只是举例)

Answer 1

如果你愿意，我在 Json 中做了一个例子。按照逻辑应该很容易切换到您的格式:)

{
  "version": 1,
  "disable_existing_loggers": true,
  "filters": {
    "skipDebug": {
      "()": "__main__.RemoveLevelFilter",
      "levelToSkip": "DEBUG"
    }
  },
  "formatters": {
    "simple": {
      "format": "%(asctime)s|%(name)s [%(levelname)s] - %(message)s"
    }
  },
  "handlers": {
    "console":{
      "level": "DEBUG",
      "class": "logging.StreamHandler",
      "formatter": "simple",
      "stream" : "ext://sys.stdout"
    },
    "file": {
      "level": "DEBUG",
      "class": "logging.handlers.RotatingFileHandler",
      "maxBytes": 5242880,
      "backupCount": 3,
      "formatter": "simple",
      "filename": "log.log",
      "mode": "a",
      "encoding": "utf-8",
      "filters": ["skipDebug"]
    }
  },
  "loggers": { },
  "root": {
    "handlers": ["console", "file"],
    "level": "DEBUG"
  }
}

当你初始化你的记录器时:

class RemoveLevelFilter(object):
    def __init__(self, levelToSkip):
        self.level = levelToSkip

    def filter(self, record):
        return self.getLogLevelName(record.levelno) != self.level
    enter code here
    def getLogLevelName(self, levelno):
        switcher = {
            10: "DEBUG",
            20: "INFO",
            30: "WARNING",
            40: "ERROR",
            50: "CRITICAL"
        }
        return switcher.get(levelno, "INVALID")

with open("logging.json", "r", encoding="utf-8") as fd:
        logging.config.dictConfig(json.load(fd))

logger = logging.getLogger(__name__)

logger.debug('This is a debug message')
logger.info('This is an info message')
logger.warning('This is a warning message')
logger.error('This is an error message')
logger.critical('This is a critical message')

P.S.:像我知道的那样奇怪我的代码。我截断了一些更复杂的东西。

引用资料:

• install filter on logging level in python using dictConfig