在Django中配置和使用structlog

Question

有人使用structlogDjango吗？我正在寻找一个代码示例，该如何集成Django日志记录（通过标准库完成）和structlog。

我尝试了“在日志记录中使用基于structlog的格式化程序进行渲染”示例中的代码，仅作了一点点修改：

# From my settings.py, basically the same code as in the linked example

timestamper = structlog.processors.TimeStamper(fmt="%Y-%m-%d %H:%M:%S")
pre_chain = [
    structlog.stdlib.add_log_level,
    timestamper,
]
LOGGING = {
    "version": 1,
    "disable_existing_loggers": False,
    "formatters": { ... },  # Exactly like in the linked example
    "handlers": { ... },    # Ditto, but only "default" handler (no files)
    "loggers": {
        "django": {
            "handlers": ["default"],
            "level": "INFO",
        },
        # I also had "" logger here, with the same config as "django",
        # but it's irrelevant for the example purposes.
    }
}
# Same as in the example
structlog.configure(
    processors=[
        structlog.stdlib.add_log_level,
        structlog.stdlib.PositionalArgumentsFormatter(),
        timestamper,
        structlog.processors.StackInfoRenderer(),
        structlog.processors.format_exc_info,
        structlog.stdlib.ProcessorFormatter.wrap_for_formatter,
    ],
    context_class=dict,
    logger_factory=structlog.stdlib.LoggerFactory(),
    wrapper_class=structlog.stdlib.BoundLogger,
    cache_logger_on_first_use=True,
)

但是，我最终遇到记录错误。这是对以404结尾的简单GET请求所发生情况的摘录

TypeError: not all arguments converted during string formatting
...
  File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 152, in get_response
    extra={'status_code': 404, 'request': request},
Message: '\x1b[2m2017-05-08 18:34:53\x1b[0m [\x1b[33m\x1b[1mwarning  \x1b[0m] \x1b[1mNot Found: /favicon.ico\x1b[0m'
Arguments: ('/favicon.ico',)

我试图弄清楚到底发生了什么，但是在调试器中迷路了。

当然，我只能structlog用于应用程序日志记录，并保持标准库记录器不变。但是，我希望所有日志记录统一，因此我的应用程序的输出将是统一的，可以进行解析。

我非常感谢一个显示如何structlog正确与Django 集成的代码段。

Answer 1

此错误最有可能在structlog 17.2中修复，应尽快发布：https : //github.com/hynek/structlog/pull/117（随时发表评论或尝试解决问题）。