webapp/app/core/logger.py

import os
import logging
from logging.handlers import TimedRotatingFileHandler


# ===============================
# 基本配置
# ===============================
LOG_DIR = os.path.join(os.path.dirname(__file__), "../../logs")
os.makedirs(LOG_DIR, exist_ok=True)

LOG_FILE = os.path.join(LOG_DIR, "app.log")


# ===============================
# 日志格式
# ===============================
LOG_FORMAT = "[%(asctime)s] [%(levelname)s] [%(name)s] [%(filename)s:%(lineno)d] - %(message)s"
DATE_FORMAT = "%Y-%m-%d %H:%M:%S"


# ===============================
# 主 logger 实例
# ===============================
logger = logging.getLogger("app")
logger.setLevel(logging.INFO)  # 可改为 DEBUG

# 防止重复添加 handler
if not logger.handlers:
    # 控制台输出
    console_handler = logging.StreamHandler()
    console_handler.setLevel(logging.INFO)
    console_handler.setFormatter(logging.Formatter(LOG_FORMAT, DATE_FORMAT))

    # 文件输出（每天切割）
    file_handler = TimedRotatingFileHandler(
        LOG_FILE, when="midnight", interval=1, backupCount=7, encoding="utf-8"
    )
    file_handler.setLevel(logging.INFO)
    file_handler.setFormatter(logging.Formatter(LOG_FORMAT, DATE_FORMAT))

    # 添加到 logger
    logger.addHandler(console_handler)
    logger.addHandler(file_handler)

    # 避免重复日志
    logger.propagate = False