| """Shared operator-credential helpers for the GPU providers. | |
| Every provider authenticates the same way: a single API key read ONLY from an | |
| environment variable on the control-plane host (never config files, never shipped to | |
| workers). The per-provider ``auth.py`` modules wrap these with their own env-var name | |
| and error message. | |
| """ | |
| from __future__ import annotations | |
| import os | |
| def load_provider_key(env_var: str) -> str | None: | |
| """Provider API key from ``env_var`` (operator configuration), or None.""" | |
| return os.environ.get(env_var) or None | |
| def ensure_provider_auth(env_var: str, missing_message: str) -> str: | |
| """Return the provider key from ``env_var``; raise ``missing_message`` if unset.""" | |
| key = load_provider_key(env_var) | |
| if not key: | |
| raise RuntimeError(missing_message) | |
| return key | |