67 lines
1.9 KiB
Python
67 lines
1.9 KiB
Python
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"""
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使用 Pydantic Settings 的应用程序配置。
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"""
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from typing import Optional
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from pydantic_settings import BaseSettings
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from pydantic import Field
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class Settings(BaseSettings):
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"""
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从环境变量加载的应用程序设置。
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"""
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# 应用程序
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app_name: str = Field(default="LangChain Learning Kit", description="Application name")
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environment: str = Field(default="development", description="Environment (development/production)")
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debug: bool = Field(default=False, description="Debug mode")
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log_level: str = Field(default="INFO", description="Logging level")
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# 服务器
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host: str = Field(default="0.0.0.0", description="Server host")
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port: int = Field(default=8000, description="Server port")
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# 数据库
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database_url: str = Field(
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...,
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description="Database connection URL",
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examples=["mysql+pymysql://root:123456@localhost:3306/langchain_learning"]
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)
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# OpenAI
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openai_api_key: str = Field(..., description="OpenAI API key")
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openai_base_url: Optional[str] = Field(
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default=None,
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description="OpenAI API base URL (for proxy or custom endpoints)"
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)
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# FAISS 存储
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faiss_base_path: str = Field(default="data/faiss", description="Base path for FAISS indexes")
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# 文本分割
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chunk_size: int = Field(default=1000, description="Default chunk size for text splitting")
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chunk_overlap: int = Field(default=200, description="Default chunk overlap")
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model_config = {
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"env_file": ".env",
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"env_file_encoding": "utf-8",
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"case_sensitive": False,
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}
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# 全局设置实例
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_settings: Optional[Settings] = None
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def get_settings() -> Settings:
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"""
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获取或创建全局设置实例。
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Returns:
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Settings: 应用程序设置
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"""
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global _settings
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if _settings is None:
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_settings = Settings()
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return _settings
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