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| """Load environment variables from .env file.""" | |
| import os | |
| from typing import Any, Optional, cast | |
| from dotenv import load_dotenv | |
| from pydantic import BaseModel | |
| from pydantic import Field as PydanticField | |
| # NOTE: This is created for documentation, but isn't parsed by pydantic until we update to 2.0. | |
| class LilacEnvironment(BaseModel): | |
| """Lilac environment variables. | |
| These can be set with operating system environment variables to override behavior. | |
| For python, see: https://docs.python.org/3/library/os.html#os.environ | |
| For bash, see: https://www.gnu.org/software/bash/manual/bash.html#Environment | |
| """ | |
| # General Lilac environment variables. | |
| LILAC_DATA_PATH: str = PydanticField( | |
| description='The Lilac data path where datasets, concepts, caches are stored.',) | |
| DEBUG: str = PydanticField( | |
| description='Turn on Lilac debug mode to log queries and timing information.') | |
| DISABLE_LOGS: str = PydanticField(description='Disable log() statements to the console.') | |
| # API Keys. | |
| OPENAI_API_KEY: str = PydanticField( | |
| description='The OpenAI API key, used for computing `openai` embeddings and generating ' | |
| 'positive examples for concept seeding.') | |
| COHERE_API_KEY: str = PydanticField( | |
| description='The Cohere API key, used for computing `cohere` embeddings.') | |
| PALM_API_KEY: str = PydanticField( | |
| description='The PaLM API key, used for computing `palm` embeddings.') | |
| # HuggingFace demo. | |
| HF_ACCESS_TOKEN: str = PydanticField( | |
| description='The HuggingFace access token, used for downloading data to a space from a ' | |
| 'private dataset. This is also required if the HuggingFace space is private.') | |
| # DuckDB. | |
| DUCKDB_USE_VIEWS: str = PydanticField( | |
| description='Whether DuckDB uses views (1), or DuckDB tables (0). Views allow for much less ' | |
| 'RAM consumption, with a runtime query penalty. When using DuckDB tables (0), demos will ' | |
| 'take more RAM but be much faster during query time.') | |
| # Authentication. | |
| LILAC_AUTH_ENABLED: str = PydanticField( | |
| description='Set to true to enable read-only mode, disabling the ability to add datasets & ' | |
| 'compute dataset signals. When enabled, `GOOGLE_CLIENT_ID`, `GOOGLE_CLIENT_SECRET` and ' | |
| '`LILAC_OAUTH_SECRET_KEY` should also be set.') | |
| GOOGLE_CLIENT_ID: str = PydanticField( | |
| description= | |
| 'The Google OAuth client ID. Required when `LILAC_AUTH_ENABLED=true`. Details can be found at ' | |
| 'https://developers.google.com/identity/protocols/oauth2.') | |
| GOOGLE_CLIENT_SECRET: str = PydanticField( | |
| description='The Google OAuth client secret. Details can be found at ' | |
| 'https://developers.google.com/identity/protocols/oauth2.') | |
| LILAC_OAUTH_SECRET_KEY: str = PydanticField( | |
| description='The Google OAuth random secret key. Details can be found at ' | |
| 'https://developers.google.com/identity/protocols/oauth2.') | |
| def _init_env() -> None: | |
| in_test = os.environ.get('LILAC_TEST', None) | |
| # Load the .env files into the environment in order of highest to lowest priority. | |
| if not in_test: # Skip local environment variables when testing. | |
| load_dotenv('.env.local') | |
| load_dotenv('.env.demo') | |
| load_dotenv('.env') | |
| auth_enabled = os.environ.get('LILAC_AUTH_ENABLED', False) == 'true' | |
| if auth_enabled: | |
| if not os.environ.get('GOOGLE_CLIENT_ID', None) or not os.environ.get( | |
| 'GOOGLE_CLIENT_SECRET', None): | |
| raise ValueError( | |
| 'Missing `GOOGLE_CLIENT_ID` or `GOOGLE_CLIENT_SECRET` when `LILAC_AUTH_ENABLED=true`') | |
| SECRET_KEY = os.environ.get('LILAC_OAUTH_SECRET_KEY', None) | |
| if not SECRET_KEY: | |
| raise ValueError('Missing `LILAC_OAUTH_SECRET_KEY` when `LILAC_AUTH_ENABLED=true`') | |
| if auth_enabled: | |
| if not os.environ.get('GOOGLE_CLIENT_ID', None) or not os.environ.get( | |
| 'GOOGLE_CLIENT_SECRET', None): | |
| raise ValueError( | |
| 'Missing `GOOGLE_CLIENT_ID` or `GOOGLE_CLIENT_SECRET` when `LILAC_AUTH_ENABLED=true`') | |
| SECRET_KEY = os.environ.get('LILAC_OAUTH_SECRET_KEY', None) | |
| if not SECRET_KEY: | |
| raise ValueError('Missing `LILAC_OAUTH_SECRET_KEY` when `LILAC_AUTH_ENABLED=true`') | |
| def env(key: str, default: Optional[Any] = None) -> Any: | |
| """Return the value of an environment variable.""" | |
| return os.environ.get(key, default) | |
| def data_path() -> str: | |
| """Return the base path for data.""" | |
| return cast(str, env('LILAC_DATA_PATH', './data')) | |
| # Initialize the environment at import time. | |
| _init_env() | |