func findSandbox(c libnetwork.NetworkController, s string, by int) (libnetwork.Sandbox, *responseStatus) { var ( sb libnetwork.Sandbox err error ) switch by { case byID: sb, err = c.SandboxByID(s) default: panic(fmt.Sprintf("unexpected selector for sandbox search: %d", by)) } if err != nil { if _, ok := err.(types.NotFoundError); ok { return nil, &responseStatus{Status: "Resource not found: Sandbox", StatusCode: http.StatusNotFound} } return nil, &responseStatus{Status: err.Error(), StatusCode: http.StatusBadRequest} } return sb, &successResponse }