JuliusBrussee/caveman · error

generate probe: %w

Error message

generate probe: %w

What it means

Error "generate probe: %w" thrown in JuliusBrussee/caveman.

Source

Thrown at shared/platform/objectstore/objectstore.go:235

		Secure: cfg.UseSSL,
		Region: cfg.Region,
	})
	if err != nil {
		return nil, fmt.Errorf("objectstore: minio client: %w", err)
	}
	return &minioStore{client: client, bucket: cfg.Bucket}, nil
}

// Probe proves the operations production retention needs instead of accepting a
// syntactically valid but unusable bucket configuration. The random probe body
// contains no tenant data and every version is removed before success returns.
func Probe(ctx context.Context, store Store) error {
	if store == nil {
		return errors.New("store is nil")
	}
	probe := make([]byte, 32)
	if _, err := rand.Read(probe); err != nil {
		return fmt.Errorf("generate probe: %w", err)
	}
	key := "_cave_health/" + base64.RawURLEncoding.EncodeToString(probe)
	if err := store.Put(ctx, key, probe, "application/octet-stream"); err != nil {
		return err
	}
	cleaned := false
	defer func() {
		if !cleaned {
			// Keep health checks within their caller deadline. A failed probe may
			// leave one random, tenant-free canary for lifecycle cleanup; readiness
			// must never hang on an unbounded background delete.
			_ = PurgeObject(ctx, store, key)
		}
	}()
	got, err := store.Get(ctx, key)
	if err != nil {
		return err
	}

View on GitHub (pinned to 27d5a3981a)

Solutions

1. Fix the probe object generation error and retry.

When it happens

Trigger: Thrown at shared/platform/objectstore/objectstore.go:235 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of JuliusBrussee/caveman@27d5a3981a (2026-08-15). Data as JSON: /api/errors/516f2f892db1beb6. Report an issue: GitHub.