// ValidatePetSetUpdate tests if required fields in the PetSet are set. func ValidatePetSetUpdate(petSet, oldPetSet *apps.PetSet) field.ErrorList { allErrs := field.ErrorList{} // TODO: For now we're taking the safe route and disallowing all updates to spec except for Spec.Replicas. // Enable on a case by case basis. restoreReplicas := petSet.Spec.Replicas petSet.Spec.Replicas = oldPetSet.Spec.Replicas // The generation changes for this update restoreGeneration := petSet.Generation petSet.Generation = oldPetSet.Generation if !reflect.DeepEqual(petSet, oldPetSet) { allErrs = append(allErrs, field.Forbidden(field.NewPath("spec"), "updates to petset spec for fields other than 'replicas' are forbidden.")) } petSet.Spec.Replicas = restoreReplicas petSet.Generation = restoreGeneration allErrs = append(allErrs, apivalidation.ValidateNonnegativeField(int64(petSet.Spec.Replicas), field.NewPath("spec", "replicas"))...) return allErrs }