Function convertResourceFormat

src/common/resources_utils.cpp:371–453

void convertResourceFormat(Resource* resource, ResourceFormat format)
{
  switch (format) {
    case PRE_RESERVATION_REFINEMENT:
    case ENDPOINT: {
      CHECK(!resource->has_role());
      CHECK(!resource->has_reservation());
      switch (resource->reservations_size()) {
        // Unreserved resource.
        case 0: {
          resource->set_role("*");
          break;
        }
        // Resource with a single reservation.
        case 1: {
          const Resource::ReservationInfo& source = resource->reservations(0);

          if (source.type() == Resource::ReservationInfo::DYNAMIC) {
            Resource::ReservationInfo* target = resource->mutable_reservation();
            if (source.has_principal()) {
              target->set_principal(source.principal());
            }
            if (source.has_labels()) {
              target->mutable_labels()->CopyFrom(source.labels());
            }
          }

          resource->set_role(source.role());

          if (format == PRE_RESERVATION_REFINEMENT) {
            resource->clear_reservations();
          }
          break;
        }
        // Resource with refined reservations.
        default: {
          CHECK_NE(PRE_RESERVATION_REFINEMENT, format)
            << "Invalid resource format conversion: A 'Resource' object"
               " being converted to the PRE_RESERVATION_REFINEMENT format"
               " must not have refined reservations";
        }
      }
      break;
    }
    case POST_RESERVATION_REFINEMENT: {
      if (resource->reservations_size() > 0) {
        // In this case, we're either already in
        // the "post-reservation-refinement" format,
        // or we're in the "endpoint" format.

        // We clear out the "pre-reservation-refinement" fields
        // in case the resources are in the "endpoint" format.
        resource->clear_role();
        resource->clear_reservation();
        return;
      }

      // Unreserved resources.