Function validateNoCacheKeyRunID

pkg/workflow/cache_validation.go:38–48

validateNoCacheKeyRunID returns an error when a user-supplied cache key contains the ${{ github.run_id }} expression. Including run_id in the key means every run writes to a unique cache slot and the cache can never be restored from a previous run. The compiler already appends run_id automatically

(key string)

// appends run_id automatically to the save key while generating a stable
// restore-keys prefix — users must not add it themselves.
func validateNoCacheKeyRunID(key string) error {
	if cacheKeyRunIDPattern.MatchString(key) {
		return NewValidationError(
			"tools.cache-memory.key",
			key,
			"cache key must not reference github.run_id — every run would write to a unique cache slot, preventing cross-run cache restoration",
			"Remove github.run_id from the key. The compiler appends it automatically to the save key and generates a stable restore-keys prefix.\n\nExample:\n\ntools:\n  cache-memory:\n    key: my-data-${{ env.GH_AW_WORKFLOW_ID_SANITIZED }}\n    # ✓ compiler adds run_id to the save key; restore-keys prefix enables cross-run restoration",
		)
	}
	return nil
}

// validateNoDuplicateCacheIDs checks for duplicate cache IDs and returns an error if found.
// Uses the generic validateNoDuplicateIDs helper for consistent duplicate detection.