"""配置管理"""
import logging
from typing import Optional
from pathlib import Path
from pydantic_settings import BaseSettings, SettingsConfigDict
from pydantic import Field
logger = logging.getLogger(__name__)
class Settings(BaseSettings):
"""应用配置"""
server_host: str = Field(default="0.0.0.0", description="服务器主机地址")
server_port: int = Field(default=8000, description="服务器端口")
debug: bool = Field(default=False, description="调试模式")
log_level: str = Field(default="INFO", description="日志级别")
model_config = SettingsConfigDict(
env_file=".env",
env_file_encoding="utf-8",
extra="ignore",
case_sensitive=False
)
_settings: Optional[Settings] = None
def get_settings() -> Settings:
"""获取配置实例"""
global _settings
if _settings is None:
env_file_path = Path(".env")
if not env_file_path.exists():
logger.warning(f"环境配置文件 {env_file_path.absolute()} 不存在，使用默认配置")
else:
logger.info(f"加载环境配置文件: {env_file_path.absolute()}")
try:
_settings = Settings()
logger.info(f"配置加载成功 - 主机: {_settings.server_host}, 端口: {_settings.server_port}, 调试模式: {_settings.debug}, 日志级别: {_settings.log_level}")
except Exception as e:
logger.error(f"配置加载失败: {e}，使用默认配置")
_settings = Settings.model_validate({})
return _settings
