CaiYouHui_backend/app/logging_config.py

# app/logging_config.py
import logging
import logging.handlers  # ✅ 这里导入 handlers
import os
from datetime import datetime

def setup_logging_with_rotation():
    """配置带轮转的日志系统"""
    
    # 创建日志目录
    log_dir = "logs"
    os.makedirs(log_dir, exist_ok=True)
    
    # 主日志文件
    main_log_file = os.path.join(log_dir, "app.log")
    
    # 配置根日志记录器
    root_logger = logging.getLogger()
    root_logger.setLevel(logging.INFO)
    
    # 清除现有的处理器
    root_logger.handlers.clear()
    
    # 1. 控制台处理器
    console_handler = logging.StreamHandler()
    console_handler.setLevel(logging.INFO)
    
    # 2. 文件处理器 - 轮转，最大10MB，保留5个备份
    file_handler = logging.handlers.RotatingFileHandler(  # ✅ 使用完整的路径
        main_log_file,
        maxBytes=10 * 1024 * 1024,  # 10MB
        backupCount=5,
        encoding='utf-8'
    )
    file_handler.setLevel(logging.DEBUG)
    
    # 3. 错误日志处理器 - 单独记录错误
    error_log_file = os.path.join(log_dir, "error.log")
    error_handler = logging.handlers.RotatingFileHandler(
        error_log_file,
        maxBytes=5 * 1024 * 1024,  # 5MB
        backupCount=3,
        encoding='utf-8'
    )
    error_handler.setLevel(logging.ERROR)
    
    # 设置日志格式
    detailed_formatter = logging.Formatter(
        '%(asctime)s - %(name)s - %(levelname)s - [%(filename)s:%(lineno)d] - %(message)s',
        datefmt='%Y-%m-%d %H:%M:%S'
    )
    
    simple_formatter = logging.Formatter(
        '%(asctime)s - %(levelname)s - %(message)s',
        datefmt='%H:%M:%S'
    )
    
    console_handler.setFormatter(simple_formatter)
    file_handler.setFormatter(detailed_formatter)
    error_handler.setFormatter(detailed_formatter)
    
    # 添加过滤器到错误处理器
    class ErrorFilter(logging.Filter):
        def filter(self, record):
            return record.levelno >= logging.ERROR
    
    error_handler.addFilter(ErrorFilter())
    
    # 添加处理器
    root_logger.addHandler(console_handler)
    root_logger.addHandler(file_handler)
    root_logger.addHandler(error_handler)
    
    # 配置第三方库的日志级别
    logging.getLogger("uvicorn").setLevel(logging.WARNING)
    logging.getLogger("uvicorn.access").setLevel(logging.WARNING)
    logging.getLogger("sqlalchemy.engine").setLevel(logging.WARNING)
    logging.getLogger("sqlalchemy.orm").setLevel(logging.WARNING)

    # 配置我们应用的日志级别
    logging.getLogger("app").setLevel(logging.DEBUG)
    logging.getLogger("app.api.v1").setLevel(logging.DEBUG)
    logging.getLogger("app.core.security").setLevel(logging.DEBUG)
    
    root_logger.info(f"✅ 轮转日志系统初始化完成")
    root_logger.info(f"   主日志文件: {main_log_file}")
    root_logger.info(f"   错误日志文件: {error_log_file}")
    
    return root_logger