Python记录器-配置文件问题

Question

我有一个 logger.py 配置文件，我在 Django 项目的许多文件中使用它：

logger.py：

import datetime
import logging
import os

cwd = os.getcwd()
LOGS_PATH = os.path.join(cwd, "logs")

if not os.path.isdir(LOGS_PATH):
    os.mkdir(LOGS_PATH)


class CustomFormatter(logging.Formatter):
    LEVEL_COLOR_MAP = {
        logging.DEBUG: "\033[96m",  # Cyan
        logging.INFO: "\033[92m",  # Green
        logging.WARNING: "\033[93m",  # Yellow
        logging.ERROR: "\033[91m",  # Red
        logging.CRITICAL: "\033[95m",  # Magenta
    }

    def __init__(self, use_ansi=True, trim_module_name_and_time=False):
        self.use_ansi = use_ansi
        self.trim_module_name_and_time = trim_module_name_and_time

    def format(self, record):
        module_and_file_name = record.name
        func_name = record.funcName
        line_number = record.lineno
        module = f"[{module_and_file_name}.{func_name}:{line_number}]"

        if len(module) < 70:
            module = module + " " * (70 - len(module))

        level_name = record.levelname
        if len(level_name) < 7:
            level_name = level_name + " " * (7 - len(level_name))

        asctime = datetime.datetime.fromtimestamp(record.created).strftime(
            "%b/%d %H:%M:%S"
        )

        if self.use_ansi:
            level_color = self.LEVEL_COLOR_MAP.get(record.levelno, "\033[97m")  # White

            if self.trim_module_name_and_time:
                log_message = f"{level_color}{level_name}\033[0m %(message)s" % {
                    "levelname": level_name,
                    "lineno": line_number,
                    "message": record.getMessage(),
                }
                return log_message
            else:
                log_message = (
                    f"{module} [{asctime}] {level_color}{level_name}\033[0m %(message)s"
                    % {
                        "module": module,
                        "levelname": level_name,
                        "lineno": line_number,
                        "message": record.getMessage(),
                    }
                )
                return log_message
        else:
            if self.trim_module_name_and_time:
                log_message = f"{level_name}  %(message)s" % {
                    "levelname": level_name,
                    "lineno": line_number,
                    "message": record.getMessage(),
                }
                return log_message
            else:
                log_message = f"{module} [{asctime}] {level_name}  %(message)s" % {
                    "module": module,
                    "levelname": level_name,
                    "lineno": line_number,
                    "message": record.getMessage(),
                }
                return log_message


logger_config = {
    "version": 1,
    "disable_existing_loggers": False,
    "formatters": {
        "custom_formatter": {"()": CustomFormatter, "use_ansi": False},
        "custom_formatter_simple": {
            "()": CustomFormatter,
            "use_ansi": True,
            "trim_module_name_and_time": True,
        },
        "verbose": {
            "format": "%(asctime)s %(name)s:%(lineno)s [%(levelname)-7s] %(message)s [IP: {REMOTE_ADDR}]",
            "datefmt": "%b/%d %H:%M:%S",
        },
        "simple": {"format": "%(levelname)s %(message)s"},
    },
    "handlers": {
        "null": {
            "class": "logging.NullHandler",
        },
        "console": {
            "class": "logging.StreamHandler",
            "formatter": "custom_formatter_simple",
            # "level": "DEBUG",
        },
        "file_debug": {
            "class": "logging.handlers.RotatingFileHandler",
            "filename": os.path.join(LOGS_PATH, "log_debug.log"),
            "backupCount": 9,  # keep at most 9 log files
            "maxBytes": 52428800,  # 50*1024*1024 bytes (50MB)
            "formatter": "custom_formatter",
            # "level": "DEBUG",
        },
        "file_info": {
            "class": "logging.handlers.RotatingFileHandler",
            "filename": os.path.join(LOGS_PATH, "log_info.log"),
            "backupCount": 9,
            "maxBytes": 52428800,
            "formatter": "custom_formatter",
            # "level": "INFO",
        },
    },
    "loggers": {
        "": {
            "handlers": ["file_debug", "file_info", "console"],
            "level": "DEBUG",
            "propagate": False,
        }
    },
}

例如视图.py：

import logging
from utils.logger import logger_config
logging.config.dictConfig(logger_config)
logger = logging.getLogger(__name__)
logger.info(f"Logger {__name__} initialized.")

现在我想重定向这些日志：

Not Found: /wrong_url
WARNING Not Found: /wrong_url
[30/Aug/2024 07:32:16] "GET /wrong_url HTTP/1.1" 404 5380

所以它们应该只存储在 django_debug.log 中。

我想，当我添加记录器并指定将其保存在调试文件中时，那就没问题了：

    "loggers": {
        "": {
            "handlers": ["file_debug", "file_info", "console"],
            "level": "DEBUG",
            "propagate": False,
        },
        "django.request": {
            "handlers": ["file_debug"],
            "level": "WARNING",
            "propagate": False,
        },
    },

但这不起作用。
你能指出哪里出了问题吗？即使我将其设置为仅记录到调试文件，为什么我仍然可以在控制台和 django_info.log 文件中看到警告？
预先感谢您的回复。

Answer 1

我想您会在控制台中看到

django.server

日志（https://docs.djangoproject.com/en/3.2/topics/logging/#django-server）。您还需要覆盖 django.server 记录器。

"loggers": {
        "": {
            "handlers": ["file_debug", "file_info", "console"],
            "level": "DEBUG",
            "propagate": False,
        },
        "django.request": {
            "handlers": ["file_debug"],
            "level": "WARNING",
            "propagate": False,
        },
        "django.server": {
            "handlers": ["file_debug"],
            "level": "WARNING",
            "propagate": False,
        },
    },

您还可以在格式化程序设置中使用

name

参数查看记录器的名称。如果您将“控制台”处理程序更改为使用“详细”格式化程序，您将看到哪个记录器将消息发送到控制台