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changes the way gc detect that an object needs to be deleted

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before this change, an object would be added to `attemptToDelete` queue only if `gc` detected the transition, simply by check if `deletionTimestamp` was set. After the change, it will check if `foregroundDeletion` finalizer has been set before adding the item to the queue.
This commit is contained in:
Lukasz Szaszkiewicz 2019-08-07 15:59:40 +02:00
parent 564eff757c
commit 2d81cee900
1 changed files with 10 additions and 11 deletions
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21
pkg/controller/garbagecollector/graph_builder.go
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@ -427,15 +427,14 @@ func referencesDiffs(old []metav1.OwnerReference, new []metav1.OwnerReference) (
return added, removed, changed
}
// returns if the object in the event just transitions to "being deleted".
func deletionStarts(oldObj interface{}, newAccessor metav1.Object) bool {
// The delta_fifo may combine the creation and update of the object into one
// event, so if there is no oldObj, we just return if the newObj (via
// newAccessor) is being deleted.
func deletionStartsWithFinalizer(oldObj interface{}, newAccessor metav1.Object, matchingFinalizer string) bool {
// if the new object isn't being deleted, or doesn't have the finalizer we're interested in, return false
if !beingDeleted(newAccessor) || !hasFinalizer(newAccessor, matchingFinalizer) {
return false
}
// if the old object is nil, or wasn't being deleted, or didn't have the finalizer, return true
if oldObj == nil {
if newAccessor.GetDeletionTimestamp() == nil {
return false
}
return true
}
oldAccessor, err := meta.Accessor(oldObj)
@ -443,7 +442,7 @@ func deletionStarts(oldObj interface{}, newAccessor metav1.Object) bool {
utilruntime.HandleError(fmt.Errorf("cannot access oldObj: %v", err))
return false
}
return beingDeleted(newAccessor) && !beingDeleted(oldAccessor)
return !beingDeleted(oldAccessor) || !hasFinalizer(oldAccessor, matchingFinalizer)
}
func beingDeleted(accessor metav1.Object) bool {
@ -471,13 +470,13 @@ func hasFinalizer(accessor metav1.Object, matchingFinalizer string) bool {
// this function takes newAccessor directly because the caller already
// instantiates an accessor for the newObj.
func startsWaitingForDependentsDeleted(oldObj interface{}, newAccessor metav1.Object) bool {
return deletionStarts(oldObj, newAccessor) && hasDeleteDependentsFinalizer(newAccessor)
return deletionStartsWithFinalizer(oldObj, newAccessor, metav1.FinalizerDeleteDependents)
}
// this function takes newAccessor directly because the caller already
// instantiates an accessor for the newObj.
func startsWaitingForDependentsOrphaned(oldObj interface{}, newAccessor metav1.Object) bool {
return deletionStarts(oldObj, newAccessor) && hasOrphanFinalizer(newAccessor)
return deletionStartsWithFinalizer(oldObj, newAccessor, metav1.FinalizerOrphanDependents)
}
// if an blocking ownerReference points to an object gets removed, or gets set to