自定义日志级别不适用于structlog

Question

我正在使用python自定义日志-TRACE是以下代码中的自定义日志级别。

使用默认记录器，它可以正常工作

但是，当我为structlog更改它时，它给出了错误。

structlog无法在下面的代码中识别TRACE。

似乎structlog不支持自定义日志级别？

已经尝试过的解决方法提到了https://github.com/hynek/structlog/issues/47

即

    structlog.stdlib.TRACE = TRACE = 5
    structlog.stdlib._NAME_TO_LEVEL['trace'] = TRACE

但这不起作用

    TRACE = 19


    logging.addLevelName(TRACE, "TRACE")

    logging.basicConfig(
        level=os.environ.get("LOGLEVEL", "TRACE"),
        format=os.environ.get("LOGFORMAT", '%(levelname)-8s= %(asctime)-15s = %(message)s'))



    structlog.configure(
        processors=[
            structlog.stdlib.filter_by_level,
            structlog.stdlib.add_logger_name,
            structlog.stdlib.add_log_level,
            structlog.stdlib.PositionalArgumentsFormatter(),
            structlog.processors.StackInfoRenderer(),
            structlog.processors.format_exc_info,
            structlog.processors.UnicodeDecoder(),
            structlog.stdlib.render_to_log_kwargs,
        ],
        context_class=dict,
        logger_factory=structlog.stdlib.LoggerFactory(),
        wrapper_class=structlog.stdlib.BoundLogger,
        cache_logger_on_first_use=True,
    )




    #LOG = logging.getLogger() ->> Working fine
    LOG = structlog.getLogger()



    LOG.log(TRACE, "hello") ->> error on this line
    LOG.info("testing")

Answer 1

目前，您可能已经从您评论过的相关问题中收集了任何官方信息 。

您现在应该可以通过猴子structlog.stdlib._NAME_TO_LEVEL来规避此structlog.stdlib._NAME_TO_LEVEL 。

Answer 2

可以创建自定义级别，但不是很容易。

您需要记住，不仅要更改structlog.stdlib._NAME_TO_LEVEL ，还要更改structlog.stdlib._LEVEL_TO_NAME 。

然后，你需要一个补充trace方法至少structlog.stdlib._FixedFindCallerLogger （如果您添加trace方法structlog.stdlib.BoundLogger以及你可以调用LOG.trace ，这是很好）。

此代码应工作：

import logging
import os

import structlog

TRACE = 19

structlog.stdlib.TRACE = TRACE = 5 # this overrides the 19 above with a 5, is that right?
structlog.stdlib._NAME_TO_LEVEL['trace'] = TRACE
structlog.stdlib._LEVEL_TO_NAME[TRACE] = 'trace'


def trace(self, msg, *args, **kw):
    return self.log(TRACE, msg, *args, **kw)


structlog.stdlib._FixedFindCallerLogger.trace = trace
structlog.stdlib.BoundLogger.trace = trace

logging.basicConfig(
    level=int(os.environ.get("LOGLEVEL", TRACE)),
    format=os.environ.get("LOGFORMAT", '%(levelname)-8s= %(asctime)-15s = %(message)s'))

structlog.configure(
    processors=[
        structlog.stdlib.filter_by_level,
        structlog.stdlib.add_logger_name,
        structlog.stdlib.add_log_level,
        structlog.stdlib.PositionalArgumentsFormatter(),
        structlog.processors.StackInfoRenderer(),
        structlog.processors.format_exc_info,
        structlog.processors.UnicodeDecoder(),
        structlog.stdlib.render_to_log_kwargs,
    ],
    context_class=dict,
    logger_factory=structlog.stdlib.LoggerFactory(),
    wrapper_class=structlog.stdlib.BoundLogger,
    cache_logger_on_first_use=True,
)

logging.addLevelName(TRACE, "TRACE")

LOG = structlog.getLogger()
LOG.trace('test')