refactor(config): 移除不必要的配置重新加载函数并优化设置更新逻辑

app/config/config.py

@@ -7,7 +7,6 @@ from typing import List, Any, Dict, Type
 
 from pydantic import ValidationError
 from pydantic_settings import BaseSettings
-from dotenv import find_dotenv, load_dotenv
 from sqlalchemy import insert, update, select
 
 from app.core.constants import API_VERSION, DEFAULT_CREATE_IMAGE_MODEL, DEFAULT_FILTER_MODELS, DEFAULT_MODEL, DEFAULT_STREAM_CHUNK_SIZE, DEFAULT_STREAM_LONG_TEXT_THRESHOLD, DEFAULT_STREAM_MAX_DELAY, DEFAULT_STREAM_MIN_DELAY, DEFAULT_STREAM_SHORT_TEXT_THRESHOLD, DEFAULT_TIMEOUT
@@ -72,19 +71,6 @@ class Settings(BaseSettings):
 # 创建全局配置实例
 settings = Settings()
 
-# 添加重新加载配置的函数
-def reload_settings():
-    """重新加载环境变量并更新配置"""
-    global settings
-    # 显式加载 .env 文件，覆盖现有环境变量
-    # find_dotenv() 会查找 .env 文件
-    load_dotenv(find_dotenv(), override=True)
-    settings = Settings()
-    # 可以在这里添加日志记录，确认配置已重新加载
-    # print("Settings reloaded") # 用于调试
-
-# --- Initial Settings Synchronization ---
-
 def _parse_db_value(key: str, db_value: str, target_type: Type) -> Any:
     """尝试将数据库字符串值解析为目标 Python 类型"""
     try:

app/service/config/config_service.py

@@ -3,15 +3,15 @@
 """
 import datetime
 import json
-import os
 from typing import Any, Dict, List
 
-from dotenv import load_dotenv
+from dotenv import find_dotenv, load_dotenv
 from sqlalchemy import insert, update
 
-from app.config.config import settings, reload_settings 
+from app.config.config import settings
 from app.database.connection import database
 from app.database.models import Settings
+from app.config.config import Settings as ConfigSettings
 from app.database.services import get_all_settings
 from app.service.key.key_manager import get_key_manager_instance, reset_key_manager_instance
 from app.log.logger import get_config_routes_logger
@@ -114,64 +114,35 @@ class ConfigService:
     @staticmethod
     async def reset_config() -> Dict[str, Any]:
         """
-        重置配置到默认值
-        
+        重置配置：优先从系统环境变量加载，然后从 .env 文件加载，
+        更新内存中的 settings 对象，并刷新 KeyManager。
+
         Returns:
             Dict[str, Any]: 重置后的配置字典
         """
-        # 重新加载.env文件
-        load_dotenv(override=True)
-        # 重新加载配置对象以反映最新的环境变量
-        reload_settings()
-        logger.info("Settings object reloaded from environment variables.")
-        # 同步数据库中的配置到settings对象
-        await ConfigService._sync_db_config()
-        return await ConfigService.get_config()
-    
-    @staticmethod
-    async def _sync_db_config() -> None:
-        """
-        将.env文件中的配置项同步到数据库
-        """
+        # 1. 重新加载配置对象，它应该处理环境变量和 .env 的优先级
+        _reload_settings()
+        logger.info("Settings object reloaded, prioritizing system environment variables then .env file.")
+
+        # 2. 重置并重新初始化 KeyManager
         try:
-            # 获取.env文件中的所有配置项
-            env_values = dotenv_values(".env")
-            await ConfigService.update_config(env_values)
-            
-            logger.info("Synced configuration to database")
+            await reset_key_manager_instance()
+            # 确保使用更新后的 settings 中的 API_KEYS
+            await get_key_manager_instance(settings.API_KEYS)
+            logger.info("KeyManager instance re-initialized with reloaded settings.")
         except Exception as e:
-            logger.error(f"Failed to sync configuration to database: {str(e)}")
+            logger.error(f"Failed to re-initialize KeyManager during reset: {str(e)}")
+            # 根据需要决定是否抛出异常或继续
+            # 这里选择记录错误并继续
 
+        # 3. 返回更新后的配置
+        return await ConfigService.get_config()
 
-# 添加dotenv_values函数
-def dotenv_values(dotenv_path: str) -> Dict[str, str]:
-    """
-    从.env文件中读取配置项
-    
-    Args:
-        dotenv_path: .env文件路径
-    
-    Returns:
-        Dict[str, str]: 配置项字典
-    """
-    if not os.path.exists(dotenv_path):
-        return {}
-    
-    result = {}
-    with open(dotenv_path, "r", encoding="utf-8") as f:
-        for line in f:
-            line = line.strip()
-            if not line or line.startswith("#") or "=" not in line:
-                continue
-            
-            key, value = line.split("=", 1)
-            key = key.strip()
-            value = value.strip()
-            
-            # 去除引号
-            if value and value[0] == value[-1] and value[0] in ["'", '"']:
-                value = value[1:-1]
-            
-            result[key] = value
-    
-    return result
+# 重新加载配置的函数
+def _reload_settings():
+    """重新加载环境变量并更新配置"""
+    # 显式加载 .env 文件，覆盖现有环境变量
+    load_dotenv(find_dotenv(), override=True)
+    # 更新现有 settings 对象的属性，而不是新建实例
+    for key, value in ConfigSettings().model_dump().items():
+        setattr(settings, key, value)

app/service/key/key_manager.py

@@ -2,6 +2,7 @@ import asyncio
 from itertools import cycle
 from typing import Dict
 
+
 from app.config.config import settings
 from app.log.logger import get_key_manager_logger
 
@@ -109,6 +110,8 @@ async def get_key_manager_instance(api_keys: list = None) -> KeyManager:
             _singleton_instance = KeyManager(api_keys)
             logger.info("KeyManager instance created.")
         return _singleton_instance
+
+    
 async def reset_key_manager_instance():
     """重置 KeyManager 单例实例"""
     global _singleton_instance