Method signAndSend

app/scanningcabinet/datastore.go:237–247

TODO(mpl): move that to client pkg, with a good API ?

(ctx context.Context, json string)

// TODO(mpl): move that to client pkg, with a good API ?

func (h *handler) signAndSend(ctx context.Context, json string) error {
	// TODO(mpl): sign things ourselves if we can.
	scl, err := h.cl.Sign(ctx, h.server, strings.NewReader("json="+json))
	if err != nil {
		return fmt.Errorf("could not get signed claim %v: %v", json, err)
	}
	if _, err := h.cl.Upload(ctx, client.NewUploadHandleFromString(string(scl))); err != nil {
		return fmt.Errorf("could not upload signed claim %v: %v", json, err)
	}
	return nil
}

func (h *handler) setAttribute(ctx context.Context, pn blob.Ref, attr, val string) error {
	ucl, err := schema.NewSetAttributeClaim(pn, attr, val).SetSigner(h.signer).JSON()