// 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
}
// updatePetCount attempts to update the Status.Replicas of the given PetSet, with a single GET/PUT retry.
func updatePetCount(kubeClient *client.Client, ps apps.PetSet, numPets int) (updateErr error) {
if ps.Status.Replicas == numPets || kubeClient == nil {
return nil
}
psClient := kubeClient.Apps().PetSets(ps.Namespace)
var getErr error
for i, ps := 0, &ps; ; i++ {
glog.V(4).Infof(fmt.Sprintf("Updating replica count for PetSet: %s/%s, ", ps.Namespace, ps.Name) +
fmt.Sprintf("replicas %d->%d (need %d), ", ps.Status.Replicas, numPets, ps.Spec.Replicas))
ps.Status = apps.PetSetStatus{Replicas: numPets}
_, updateErr = psClient.UpdateStatus(ps)
if updateErr == nil || i >= statusUpdateRetries {
return updateErr
}
if ps, getErr = psClient.Get(ps.Name); getErr != nil {
return getErr
}
}
}