| """Fail-fast credential checks for the RunPod substrate (operator-side). | |
| These run when the Flash server starts (and before any RunPod Flash provisioning) so | |
| missing operator configuration produces one clear, actionable error instead of a | |
| partial run that dies mid-provisioning. End users never see these — their preflight is | |
| client-side ("do I have an Flash key?", see flash/client). | |
| """ | |
| from __future__ import annotations | |
| import os | |
| from flash.providers.runpod.auth import load_api_key | |
| class PreflightError(RuntimeError): | |
| """Raised when required operator credentials/configuration are missing.""" | |
| def missing_credentials(require_hf: bool = True) -> list[str]: | |
| """RunPod-related operator config that is missing (empty list == ready).""" | |
| problems: list[str] = [] | |
| if not load_api_key(): | |
| problems.append(" - RUNPOD_API_KEY: the operator's RunPod API key") | |
| if require_hf and not os.environ.get("HF_TOKEN"): | |
| problems.append( | |
| " - HF_TOKEN: a token with write access to each run's " | |
| "`[train] hf_repo`, e.g. `export HF_TOKEN=hf_...`" | |
| ) | |
| return problems | |