message: null route entry
diff: @@ -1196,8 +1196,10 @@ WasmResult Context::getProperty(absl::string_view path, std::string* result) {
  case PropertyToken::CLUSTER_NAME:
  if (!info->upstreamHost()->cluster().name().empty()) {
  value = CelValue::CreateString(&info->upstreamHost()->cluster().name());
  - } else {
  + } else if (info->routeEntry()) {
  value = CelValue::CreateString(&info->routeEntry()->clusterName());
  + } else {
  + return WasmResult::NotFound;
  }
  break;
  case PropertyToken::CLUSTER_METADATA:
  