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Don't process events until fully initialized.

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We do not want to process any volume / claim events until both PV and claim
caches are fully loaded.
This commit is contained in:
Jan Safranek
2016-05-17 14:55:05 +02:00
parent 71aa892a86
commit 20305f9235
1 changed files with 28 additions and 0 deletions
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28
pkg/controller/persistentvolume/persistentvolume_controller.go
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@@ -112,6 +112,10 @@ func (ctrl *PersistentVolumeController) initializeController(syncPeriod time.Dur
// addVolume is callback from framework.Controller watching PersistentVolume
// events.
func (ctrl *PersistentVolumeController) addVolume(obj interface{}) {
if !ctrl.isFullySynced() {
return
}
pv, ok := obj.(*api.PersistentVolume)
if !ok {
glog.Errorf("expected PersistentVolume but handler received %+v", obj)
@@ -125,6 +129,10 @@ func (ctrl *PersistentVolumeController) addVolume(obj interface{}) {
// updateVolume is callback from framework.Controller watching PersistentVolume
// events.
func (ctrl *PersistentVolumeController) updateVolume(oldObj, newObj interface{}) {
if !ctrl.isFullySynced() {
return
}
newVolume, ok := newObj.(*api.PersistentVolume)
if !ok {
glog.Errorf("Expected PersistentVolume but handler received %+v", newObj)
@@ -144,6 +152,10 @@ func (ctrl *PersistentVolumeController) deleteVolume(obj interface{}) {
// addClaim is callback from framework.Controller watching PersistentVolumeClaim
// events.
func (ctrl *PersistentVolumeController) addClaim(obj interface{}) {
if !ctrl.isFullySynced() {
return
}
claim, ok := obj.(*api.PersistentVolumeClaim)
if !ok {
glog.Errorf("Expected PersistentVolumeClaim but addClaim received %+v", obj)
@@ -157,6 +169,10 @@ func (ctrl *PersistentVolumeController) addClaim(obj interface{}) {
// updateClaim is callback from framework.Controller watching PersistentVolumeClaim
// events.
func (ctrl *PersistentVolumeController) updateClaim(oldObj, newObj interface{}) {
if !ctrl.isFullySynced() {
return
}
newClaim, ok := newObj.(*api.PersistentVolumeClaim)
if !ok {
glog.Errorf("Expected PersistentVolumeClaim but updateClaim received %+v", newObj)
@@ -170,6 +186,10 @@ func (ctrl *PersistentVolumeController) updateClaim(oldObj, newObj interface{})
// deleteClaim is callback from framework.Controller watching PersistentVolumeClaim
// events.
func (ctrl *PersistentVolumeController) deleteClaim(obj interface{}) {
if !ctrl.isFullySynced() {
return
}
var volume *api.PersistentVolume
var claim *api.PersistentVolumeClaim
var ok bool
@@ -242,3 +262,11 @@ func (ctrl *PersistentVolumeController) Stop() {
close(ctrl.volumeControllerStopCh)
close(ctrl.claimControllerStopCh)
}
// isFullySynced returns true, if both volume and claim caches are fully loaded
// after startup.
// We do not want to process events with not fully loaded caches - e.g. we might
// recycle/delete PVs that don't have corresponding claim in the cache yet.
func (ctrl *PersistentVolumeController) isFullySynced() bool {
return ctrl.volumeController.HasSynced() && ctrl.claimController.HasSynced()
}