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Check pod exist in attach controller DSW populator

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Fix bug in desired_state_of_the_world_populator.go to check exists so
that it can delete pods even if the delete event is missed (or fails)
This commit is contained in:
saadali 2016-07-17 15:56:14 -07:00
parent 87a0213d43
commit d210c2231f
1 changed files with 20 additions and 6 deletions
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26
pkg/controller/volume/attachdetach/populator/desired_state_of_world_populator.go
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@ -82,12 +82,26 @@ func (dswp *desiredStateOfWorldPopulator) findAndRemoveDeletedPods() {
glog.Errorf("MetaNamespaceKeyFunc failed for pod %q (UID %q) with: %v", dswPodKey, dswPodUID, err)
continue
}
// retrieve the pod object from pod informer with the namespace key
informerPodObj, exists, err := dswp.podInformer.GetStore().GetByKey(dswPodKey)
if err != nil || informerPodObj == nil {
glog.Errorf("podInformer GetByKey failed for pod %q (UID %q) with %v", dswPodKey, dswPodUID, err)
// Retrieve the pod object from pod informer with the namespace key
informerPodObj, exists, err :=
dswp.podInformer.GetStore().GetByKey(dswPodKey)
if err != nil {
glog.Errorf(
"podInformer GetByKey failed for pod %q (UID %q) with %v",
dswPodKey,
dswPodUID,
err)
continue
}
if exists && informerPodObj == nil {
glog.Info(
"podInformer GetByKey found pod, but informerPodObj is nil for pod %q (UID %q)",
dswPodKey,
dswPodUID)
continue
}
if exists {
informerPod, ok := informerPodObj.(*api.Pod)
if !ok {
@ -95,7 +109,7 @@ func (dswp *desiredStateOfWorldPopulator) findAndRemoveDeletedPods() {
continue
}
informerPodUID := volumehelper.GetUniquePodName(informerPod)
// Check whether the unique idenfier of the pod from dsw matches the one retrived from pod informer
// Check whether the unique identifier of the pod from dsw matches the one retrieved from pod informer
if informerPodUID == dswPodUID {
glog.V(10).Infof(
"Verified pod %q (UID %q) from dsw exists in pod informer.", dswPodKey, dswPodUID)
@ -103,7 +117,7 @@ func (dswp *desiredStateOfWorldPopulator) findAndRemoveDeletedPods() {
}
}
// the pod from dsw does not exist in pod informer, or it does not match the unique idenfier retrieved
// the pod from dsw does not exist in pod informer, or it does not match the unique identifer retrieved
// from the informer, delete it from dsw
glog.V(1).Infof(
"Removing pod %q (UID %q) from dsw because it does not exist in pod informer.", dswPodKey, dswPodUID)