func shouldOrphanDependents(e event, accessor meta.Object) bool {
// The delta_fifo may combine the creation and update of the object into one
// event, so we need to check AddEvent as well.
if e.oldObj == nil {
if accessor.GetDeletionTimestamp() == nil {
return false
}
} else {
oldAccessor, err := meta.Accessor(e.oldObj)
if err != nil {
utilruntime.HandleError(fmt.Errorf("cannot access oldObj: %v", err))
return false
}
// ignore the event if it's not updating DeletionTimestamp from non-nil to nil.
if accessor.GetDeletionTimestamp() == nil || oldAccessor.GetDeletionTimestamp() != nil {
return false
}
}
finalizers := accessor.GetFinalizers()
for _, finalizer := range finalizers {
if finalizer == api.FinalizerOrphan {
return true
}
}
return false
}
// shouldUpdateFinalizers returns if we need to update the finalizers of the
// object, and the desired list of finalizers.
// When deciding whether to add the OrphanDependent finalizer, factors in the
// order of highest to lowest priority are: options.OrphanDependents, existing
// finalizers of the object, e.DeleteStrategy.DefaultGarbageCollectionPolicy.
func shouldUpdateFinalizers(e *Store, accessor meta.Object, options *api.DeleteOptions) (shouldUpdate bool, newFinalizers []string) {
shouldOrphan := false
// Get default orphan policy from this REST object type
if gcStrategy, ok := e.DeleteStrategy.(rest.GarbageCollectionDeleteStrategy); ok {
if gcStrategy.DefaultGarbageCollectionPolicy() == rest.OrphanDependents {
shouldOrphan = true
}
}
// If a finalizer is set in the object, it overrides the default
hasOrphanFinalizer := false
finalizers := accessor.GetFinalizers()
for _, f := range finalizers {
if f == api.FinalizerOrphan {
shouldOrphan = true
hasOrphanFinalizer = true
break
}
// TODO: update this when we add a finalizer indicating a preference for the other behavior
}
// If an explicit policy was set at deletion time, that overrides both
if options != nil && options.OrphanDependents != nil {
shouldOrphan = *options.OrphanDependents
}
if shouldOrphan && !hasOrphanFinalizer {
finalizers = append(finalizers, api.FinalizerOrphan)
return true, finalizers
}
if !shouldOrphan && hasOrphanFinalizer {
var newFinalizers []string
for _, f := range finalizers {
if f == api.FinalizerOrphan {
continue
}
newFinalizers = append(newFinalizers, f)
}
return true, newFinalizers
}
return false, finalizers
}
// return if we need to update the finalizers of the object, and the desired list of finalizers
func shouldUpdateFinalizers(accessor meta.Object, options *api.DeleteOptions) (shouldUpdate bool, newFinalizers []string) {
if options == nil || options.OrphanDependents == nil {
return false, accessor.GetFinalizers()
}
shouldOrphan := *options.OrphanDependents
alreadyOrphan := false
finalizers := accessor.GetFinalizers()
newFinalizers = make([]string, 0, len(finalizers))
for _, f := range finalizers {
if f == api.FinalizerOrphan {
alreadyOrphan = true
if !shouldOrphan {
continue
}
}
newFinalizers = append(newFinalizers, f)
}
if shouldOrphan && !alreadyOrphan {
newFinalizers = append(newFinalizers, api.FinalizerOrphan)
}
shouldUpdate = shouldOrphan != alreadyOrphan
return shouldUpdate, newFinalizers
}