mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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Big move and rename
- remove persistentvolume_ prefix from all files - split controller.go into controller.go and controller_base.go (to have them under 1500 lines for github)
This commit is contained in:
Jan Safranek
@@ -22,17 +22,13 @@ import (
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"time"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/errors"
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"k8s.io/kubernetes/pkg/client/cache"
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clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
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unversioned_core "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/unversioned"
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"k8s.io/kubernetes/pkg/client/record"
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"k8s.io/kubernetes/pkg/cloudprovider"
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"k8s.io/kubernetes/pkg/controller/framework"
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"k8s.io/kubernetes/pkg/conversion"
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"k8s.io/kubernetes/pkg/runtime"
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vol "k8s.io/kubernetes/pkg/volume"
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"k8s.io/kubernetes/pkg/watch"
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"github.com/golang/glog"
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)
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@@ -144,280 +140,6 @@ type PersistentVolumeController struct {
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createProvisionedPVInterval time.Duration
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}
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// NewPersistentVolumeController creates a new PersistentVolumeController
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func NewPersistentVolumeController(
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kubeClient clientset.Interface,
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syncPeriod time.Duration,
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provisioner vol.ProvisionableVolumePlugin,
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recyclers []vol.VolumePlugin,
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cloud cloudprovider.Interface,
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clusterName string) *PersistentVolumeController {
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broadcaster := record.NewBroadcaster()
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broadcaster.StartRecordingToSink(&unversioned_core.EventSinkImpl{Interface: kubeClient.Core().Events("")})
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recorder := broadcaster.NewRecorder(api.EventSource{Component: "persistentvolume-controller"})
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controller := &PersistentVolumeController{
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kubeClient: kubeClient,
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eventRecorder: recorder,
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runningOperations: make(map[string]bool),
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cloud: cloud,
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provisioner: provisioner,
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clusterName: clusterName,
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createProvisionedPVRetryCount: createProvisionedPVRetryCount,
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createProvisionedPVInterval: createProvisionedPVInterval,
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}
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controller.recyclePluginMgr.InitPlugins(recyclers, controller)
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if controller.provisioner != nil {
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if err := controller.provisioner.Init(controller); err != nil {
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glog.Errorf("PersistentVolumeController: error initializing provisioner plugin: %v", err)
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}
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}
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volumeSource := &cache.ListWatch{
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ListFunc: func(options api.ListOptions) (runtime.Object, error) {
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return kubeClient.Core().PersistentVolumes().List(options)
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},
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WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
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return kubeClient.Core().PersistentVolumes().Watch(options)
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},
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}
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claimSource := &cache.ListWatch{
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ListFunc: func(options api.ListOptions) (runtime.Object, error) {
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return kubeClient.Core().PersistentVolumeClaims(api.NamespaceAll).List(options)
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},
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WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
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return kubeClient.Core().PersistentVolumeClaims(api.NamespaceAll).Watch(options)
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},
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}
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controller.initializeController(syncPeriod, volumeSource, claimSource)
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return controller
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}
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// initializeController prepares watching for PersistentVolume and
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// PersistentVolumeClaim events from given sources. This should be used to
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// initialize the controller for real operation (with real event sources) and
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// also during testing (with fake ones).
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func (ctrl *PersistentVolumeController) initializeController(syncPeriod time.Duration, volumeSource, claimSource cache.ListerWatcher) {
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glog.V(4).Infof("initializing PersistentVolumeController, sync every %s", syncPeriod.String())
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ctrl.volumes.store, ctrl.volumeController = framework.NewIndexerInformer(
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volumeSource,
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&api.PersistentVolume{},
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syncPeriod,
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framework.ResourceEventHandlerFuncs{
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AddFunc: ctrl.addVolume,
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UpdateFunc: ctrl.updateVolume,
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DeleteFunc: ctrl.deleteVolume,
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},
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cache.Indexers{"accessmodes": accessModesIndexFunc},
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)
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ctrl.claims, ctrl.claimController = framework.NewInformer(
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claimSource,
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&api.PersistentVolumeClaim{},
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syncPeriod,
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framework.ResourceEventHandlerFuncs{
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AddFunc: ctrl.addClaim,
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UpdateFunc: ctrl.updateClaim,
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DeleteFunc: ctrl.deleteClaim,
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},
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)
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}
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// addVolume is callback from framework.Controller watching PersistentVolume
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// events.
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func (ctrl *PersistentVolumeController) addVolume(obj interface{}) {
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if !ctrl.isFullySynced() {
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return
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}
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pv, ok := obj.(*api.PersistentVolume)
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if !ok {
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glog.Errorf("expected PersistentVolume but handler received %+v", obj)
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return
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}
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if err := ctrl.syncVolume(pv); err != nil {
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if errors.IsConflict(err) {
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// Version conflict error happens quite often and the controller
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// recovers from it easily.
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glog.V(3).Infof("PersistentVolumeController could not add volume %q: %+v", pv.Name, err)
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} else {
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glog.Errorf("PersistentVolumeController could not add volume %q: %+v", pv.Name, err)
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}
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}
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}
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// updateVolume is callback from framework.Controller watching PersistentVolume
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// events.
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func (ctrl *PersistentVolumeController) updateVolume(oldObj, newObj interface{}) {
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if !ctrl.isFullySynced() {
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return
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}
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newVolume, ok := newObj.(*api.PersistentVolume)
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if !ok {
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glog.Errorf("Expected PersistentVolume but handler received %+v", newObj)
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return
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}
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if err := ctrl.syncVolume(newVolume); err != nil {
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if errors.IsConflict(err) {
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// Version conflict error happens quite often and the controller
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// recovers from it easily.
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glog.V(3).Infof("PersistentVolumeController could not update volume %q: %+v", newVolume.Name, err)
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} else {
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glog.Errorf("PersistentVolumeController could not update volume %q: %+v", newVolume.Name, err)
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}
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}
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}
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// deleteVolume is callback from framework.Controller watching PersistentVolume
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// events.
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func (ctrl *PersistentVolumeController) deleteVolume(obj interface{}) {
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if !ctrl.isFullySynced() {
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return
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}
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var volume *api.PersistentVolume
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var ok bool
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volume, ok = obj.(*api.PersistentVolume)
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if !ok {
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if unknown, ok := obj.(cache.DeletedFinalStateUnknown); ok && unknown.Obj != nil {
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volume, ok = unknown.Obj.(*api.PersistentVolume)
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if !ok {
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glog.Errorf("Expected PersistentVolume but deleteVolume received %+v", unknown.Obj)
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return
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}
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} else {
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glog.Errorf("Expected PersistentVolume but deleteVolume received %+v", obj)
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return
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}
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}
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if !ok || volume == nil || volume.Spec.ClaimRef == nil {
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return
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}
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if claimObj, exists, _ := ctrl.claims.GetByKey(claimrefToClaimKey(volume.Spec.ClaimRef)); exists {
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if claim, ok := claimObj.(*api.PersistentVolumeClaim); ok && claim != nil {
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// sync the claim when its volume is deleted. Explicitly syncing the
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// claim here in response to volume deletion prevents the claim from
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// waiting until the next sync period for its Lost status.
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err := ctrl.syncClaim(claim)
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if err != nil {
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if errors.IsConflict(err) {
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// Version conflict error happens quite often and the
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// controller recovers from it easily.
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glog.V(3).Infof("PersistentVolumeController could not update volume %q from deleteClaim handler: %+v", claimToClaimKey(claim), err)
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} else {
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glog.Errorf("PersistentVolumeController could not update volume %q from deleteClaim handler: %+v", claimToClaimKey(claim), err)
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}
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}
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} else {
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glog.Errorf("Cannot convert object from claim cache to claim %q!?: %+v", claimrefToClaimKey(volume.Spec.ClaimRef), claimObj)
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}
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}
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}
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// addClaim is callback from framework.Controller watching PersistentVolumeClaim
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// events.
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func (ctrl *PersistentVolumeController) addClaim(obj interface{}) {
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if !ctrl.isFullySynced() {
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return
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}
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claim, ok := obj.(*api.PersistentVolumeClaim)
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if !ok {
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glog.Errorf("Expected PersistentVolumeClaim but addClaim received %+v", obj)
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return
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}
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if err := ctrl.syncClaim(claim); err != nil {
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if errors.IsConflict(err) {
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// Version conflict error happens quite often and the controller
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// recovers from it easily.
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glog.V(3).Infof("PersistentVolumeController could not add claim %q: %+v", claimToClaimKey(claim), err)
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} else {
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glog.Errorf("PersistentVolumeController could not add claim %q: %+v", claimToClaimKey(claim), err)
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}
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}
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}
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// updateClaim is callback from framework.Controller watching PersistentVolumeClaim
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// events.
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func (ctrl *PersistentVolumeController) updateClaim(oldObj, newObj interface{}) {
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if !ctrl.isFullySynced() {
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return
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}
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newClaim, ok := newObj.(*api.PersistentVolumeClaim)
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if !ok {
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glog.Errorf("Expected PersistentVolumeClaim but updateClaim received %+v", newObj)
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return
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}
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if err := ctrl.syncClaim(newClaim); err != nil {
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if errors.IsConflict(err) {
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// Version conflict error happens quite often and the controller
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// recovers from it easily.
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glog.V(3).Infof("PersistentVolumeController could not update claim %q: %+v", claimToClaimKey(newClaim), err)
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} else {
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glog.Errorf("PersistentVolumeController could not update claim %q: %+v", claimToClaimKey(newClaim), err)
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}
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}
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}
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// deleteClaim is callback from framework.Controller watching PersistentVolumeClaim
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// events.
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func (ctrl *PersistentVolumeController) deleteClaim(obj interface{}) {
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if !ctrl.isFullySynced() {
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return
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}
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var volume *api.PersistentVolume
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var claim *api.PersistentVolumeClaim
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var ok bool
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claim, ok = obj.(*api.PersistentVolumeClaim)
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if !ok {
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if unknown, ok := obj.(cache.DeletedFinalStateUnknown); ok && unknown.Obj != nil {
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claim, ok = unknown.Obj.(*api.PersistentVolumeClaim)
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if !ok {
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glog.Errorf("Expected PersistentVolumeClaim but deleteClaim received %+v", unknown.Obj)
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return
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}
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} else {
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glog.Errorf("Expected PersistentVolumeClaim but deleteClaim received %+v", obj)
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return
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}
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}
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if !ok || claim == nil {
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return
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}
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if pvObj, exists, _ := ctrl.volumes.store.GetByKey(claim.Spec.VolumeName); exists {
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if volume, ok = pvObj.(*api.PersistentVolume); ok {
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// sync the volume when its claim is deleted. Explicitly sync'ing the
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// volume here in response to claim deletion prevents the volume from
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// waiting until the next sync period for its Release.
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if volume != nil {
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err := ctrl.syncVolume(volume)
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if err != nil {
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if errors.IsConflict(err) {
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// Version conflict error happens quite often and the
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// controller recovers from it easily.
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glog.V(3).Infof("PersistentVolumeController could not update volume %q from deleteClaim handler: %+v", volume.Name, err)
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} else {
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glog.Errorf("PersistentVolumeController could not update volume %q from deleteClaim handler: %+v", volume.Name, err)
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}
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}
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}
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} else {
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glog.Errorf("Cannot convert object from volume cache to volume %q!?: %+v", claim.Spec.VolumeName, pvObj)
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}
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}
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}
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// syncClaim is the main controller method to decide what to do with a claim.
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// It's invoked by appropriate framework.Controller callbacks when a claim is
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// created, updated or periodically synced. We do not differentiate between
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@@ -761,36 +483,6 @@ func (ctrl *PersistentVolumeController) syncVolume(volume *api.PersistentVolume)
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}
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}
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// Run starts all of this controller's control loops
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func (ctrl *PersistentVolumeController) Run() {
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glog.V(4).Infof("starting PersistentVolumeController")
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if ctrl.volumeControllerStopCh == nil {
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ctrl.volumeControllerStopCh = make(chan struct{})
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go ctrl.volumeController.Run(ctrl.volumeControllerStopCh)
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}
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if ctrl.claimControllerStopCh == nil {
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ctrl.claimControllerStopCh = make(chan struct{})
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go ctrl.claimController.Run(ctrl.claimControllerStopCh)
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}
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}
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// Stop gracefully shuts down this controller
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func (ctrl *PersistentVolumeController) Stop() {
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glog.V(4).Infof("stopping PersistentVolumeController")
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close(ctrl.volumeControllerStopCh)
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close(ctrl.claimControllerStopCh)
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}
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// isFullySynced returns true, if both volume and claim caches are fully loaded
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// after startup.
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// We do not want to process events with not fully loaded caches - e.g. we might
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// recycle/delete PVs that don't have corresponding claim in the cache yet.
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func (ctrl *PersistentVolumeController) isFullySynced() bool {
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return ctrl.volumeController.HasSynced() && ctrl.claimController.HasSynced()
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}
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// updateClaimPhase saves new claim phase to API server.
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func (ctrl *PersistentVolumeController) updateClaimPhase(claim *api.PersistentVolumeClaim, phase api.PersistentVolumeClaimPhase) (*api.PersistentVolumeClaim, error) {
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glog.V(4).Infof("updating PersistentVolumeClaim[%s]: set phase %s", claimToClaimKey(claim), phase)
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@@ -1530,49 +1222,3 @@ func (ctrl *PersistentVolumeController) finishRunningOperation(operationName str
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func (ctrl *PersistentVolumeController) startRunningOperation(operationName string) {
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ctrl.runningOperations[operationName] = true
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}
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// Stateless functions
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func hasAnnotation(obj api.ObjectMeta, ann string) bool {
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_, found := obj.Annotations[ann]
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return found
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}
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func setAnnotation(obj *api.ObjectMeta, ann string, value string) {
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if obj.Annotations == nil {
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obj.Annotations = make(map[string]string)
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}
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obj.Annotations[ann] = value
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}
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func getClaimStatusForLogging(claim *api.PersistentVolumeClaim) string {
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everBound := hasAnnotation(claim.ObjectMeta, annBindCompleted)
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boundByController := hasAnnotation(claim.ObjectMeta, annBoundByController)
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return fmt.Sprintf("phase: %s, bound to: %q, wasEverBound: %v, boundByController: %v", claim.Status.Phase, claim.Spec.VolumeName, everBound, boundByController)
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}
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func getVolumeStatusForLogging(volume *api.PersistentVolume) string {
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boundByController := hasAnnotation(volume.ObjectMeta, annBoundByController)
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claimName := ""
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if volume.Spec.ClaimRef != nil {
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claimName = fmt.Sprintf("%s/%s (uid: %s)", volume.Spec.ClaimRef.Namespace, volume.Spec.ClaimRef.Name, volume.Spec.ClaimRef.UID)
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}
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return fmt.Sprintf("phase: %s, bound to: %q, boundByController: %v", volume.Status.Phase, claimName, boundByController)
|
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}
|
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|
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// isVolumeBoundToClaim returns true, if given volume is pre-bound or bound
|
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// to specific claim. Both claim.Name and claim.Namespace must be equal.
|
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// If claim.UID is present in volume.Spec.ClaimRef, it must be equal too.
|
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func isVolumeBoundToClaim(volume *api.PersistentVolume, claim *api.PersistentVolumeClaim) bool {
|
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if volume.Spec.ClaimRef == nil {
|
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return false
|
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}
|
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if claim.Name != volume.Spec.ClaimRef.Name || claim.Namespace != volume.Spec.ClaimRef.Namespace {
|
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return false
|
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}
|
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if volume.Spec.ClaimRef.UID != "" && claim.UID != volume.Spec.ClaimRef.UID {
|
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return false
|
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}
|
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return true
|
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}
|
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390
pkg/controller/persistentvolume/controller_base.go
Normal file
390
pkg/controller/persistentvolume/controller_base.go
Normal file
@@ -0,0 +1,390 @@
|
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/*
|
||||
Copyright 2016 The Kubernetes Authors All rights reserved.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package persistentvolume
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
"k8s.io/kubernetes/pkg/api"
|
||||
"k8s.io/kubernetes/pkg/api/errors"
|
||||
"k8s.io/kubernetes/pkg/client/cache"
|
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clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
|
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unversioned_core "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/unversioned"
|
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"k8s.io/kubernetes/pkg/client/record"
|
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"k8s.io/kubernetes/pkg/cloudprovider"
|
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"k8s.io/kubernetes/pkg/controller/framework"
|
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"k8s.io/kubernetes/pkg/runtime"
|
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vol "k8s.io/kubernetes/pkg/volume"
|
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"k8s.io/kubernetes/pkg/watch"
|
||||
|
||||
"github.com/golang/glog"
|
||||
)
|
||||
|
||||
// This file contains the controller base functionality, i.e. framework to
|
||||
// process PV/PVC added/updated/deleted events. The real binding, provisioning,
|
||||
// recycling and deleting is done in controller.go
|
||||
|
||||
// NewPersistentVolumeController creates a new PersistentVolumeController
|
||||
func NewPersistentVolumeController(
|
||||
kubeClient clientset.Interface,
|
||||
syncPeriod time.Duration,
|
||||
provisioner vol.ProvisionableVolumePlugin,
|
||||
recyclers []vol.VolumePlugin,
|
||||
cloud cloudprovider.Interface,
|
||||
clusterName string) *PersistentVolumeController {
|
||||
|
||||
broadcaster := record.NewBroadcaster()
|
||||
broadcaster.StartRecordingToSink(&unversioned_core.EventSinkImpl{Interface: kubeClient.Core().Events("")})
|
||||
recorder := broadcaster.NewRecorder(api.EventSource{Component: "persistentvolume-controller"})
|
||||
|
||||
controller := &PersistentVolumeController{
|
||||
kubeClient: kubeClient,
|
||||
eventRecorder: recorder,
|
||||
runningOperations: make(map[string]bool),
|
||||
cloud: cloud,
|
||||
provisioner: provisioner,
|
||||
clusterName: clusterName,
|
||||
createProvisionedPVRetryCount: createProvisionedPVRetryCount,
|
||||
createProvisionedPVInterval: createProvisionedPVInterval,
|
||||
}
|
||||
controller.recyclePluginMgr.InitPlugins(recyclers, controller)
|
||||
if controller.provisioner != nil {
|
||||
if err := controller.provisioner.Init(controller); err != nil {
|
||||
glog.Errorf("PersistentVolumeController: error initializing provisioner plugin: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
volumeSource := &cache.ListWatch{
|
||||
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
|
||||
return kubeClient.Core().PersistentVolumes().List(options)
|
||||
},
|
||||
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
|
||||
return kubeClient.Core().PersistentVolumes().Watch(options)
|
||||
},
|
||||
}
|
||||
|
||||
claimSource := &cache.ListWatch{
|
||||
ListFunc: func(options api.ListOptions) (runtime.Object, error) {
|
||||
return kubeClient.Core().PersistentVolumeClaims(api.NamespaceAll).List(options)
|
||||
},
|
||||
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
|
||||
return kubeClient.Core().PersistentVolumeClaims(api.NamespaceAll).Watch(options)
|
||||
},
|
||||
}
|
||||
|
||||
controller.initializeController(syncPeriod, volumeSource, claimSource)
|
||||
|
||||
return controller
|
||||
}
|
||||
|
||||
// initializeController prepares watching for PersistentVolume and
|
||||
// PersistentVolumeClaim events from given sources. This should be used to
|
||||
// initialize the controller for real operation (with real event sources) and
|
||||
// also during testing (with fake ones).
|
||||
func (ctrl *PersistentVolumeController) initializeController(syncPeriod time.Duration, volumeSource, claimSource cache.ListerWatcher) {
|
||||
glog.V(4).Infof("initializing PersistentVolumeController, sync every %s", syncPeriod.String())
|
||||
ctrl.volumes.store, ctrl.volumeController = framework.NewIndexerInformer(
|
||||
volumeSource,
|
||||
&api.PersistentVolume{},
|
||||
syncPeriod,
|
||||
framework.ResourceEventHandlerFuncs{
|
||||
AddFunc: ctrl.addVolume,
|
||||
UpdateFunc: ctrl.updateVolume,
|
||||
DeleteFunc: ctrl.deleteVolume,
|
||||
},
|
||||
cache.Indexers{"accessmodes": accessModesIndexFunc},
|
||||
)
|
||||
ctrl.claims, ctrl.claimController = framework.NewInformer(
|
||||
claimSource,
|
||||
&api.PersistentVolumeClaim{},
|
||||
syncPeriod,
|
||||
framework.ResourceEventHandlerFuncs{
|
||||
AddFunc: ctrl.addClaim,
|
||||
UpdateFunc: ctrl.updateClaim,
|
||||
DeleteFunc: ctrl.deleteClaim,
|
||||
},
|
||||
)
|
||||
}
|
||||
|
||||
// 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)
|
||||
return
|
||||
}
|
||||
if err := ctrl.syncVolume(pv); err != nil {
|
||||
if errors.IsConflict(err) {
|
||||
// Version conflict error happens quite often and the controller
|
||||
// recovers from it easily.
|
||||
glog.V(3).Infof("PersistentVolumeController could not add volume %q: %+v", pv.Name, err)
|
||||
} else {
|
||||
glog.Errorf("PersistentVolumeController could not add volume %q: %+v", pv.Name, err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// 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)
|
||||
return
|
||||
}
|
||||
if err := ctrl.syncVolume(newVolume); err != nil {
|
||||
if errors.IsConflict(err) {
|
||||
// Version conflict error happens quite often and the controller
|
||||
// recovers from it easily.
|
||||
glog.V(3).Infof("PersistentVolumeController could not update volume %q: %+v", newVolume.Name, err)
|
||||
} else {
|
||||
glog.Errorf("PersistentVolumeController could not update volume %q: %+v", newVolume.Name, err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// deleteVolume is callback from framework.Controller watching PersistentVolume
|
||||
// events.
|
||||
func (ctrl *PersistentVolumeController) deleteVolume(obj interface{}) {
|
||||
if !ctrl.isFullySynced() {
|
||||
return
|
||||
}
|
||||
|
||||
var volume *api.PersistentVolume
|
||||
var ok bool
|
||||
volume, ok = obj.(*api.PersistentVolume)
|
||||
if !ok {
|
||||
if unknown, ok := obj.(cache.DeletedFinalStateUnknown); ok && unknown.Obj != nil {
|
||||
volume, ok = unknown.Obj.(*api.PersistentVolume)
|
||||
if !ok {
|
||||
glog.Errorf("Expected PersistentVolume but deleteVolume received %+v", unknown.Obj)
|
||||
return
|
||||
}
|
||||
} else {
|
||||
glog.Errorf("Expected PersistentVolume but deleteVolume received %+v", obj)
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
if !ok || volume == nil || volume.Spec.ClaimRef == nil {
|
||||
return
|
||||
}
|
||||
|
||||
if claimObj, exists, _ := ctrl.claims.GetByKey(claimrefToClaimKey(volume.Spec.ClaimRef)); exists {
|
||||
if claim, ok := claimObj.(*api.PersistentVolumeClaim); ok && claim != nil {
|
||||
// sync the claim when its volume is deleted. Explicitly syncing the
|
||||
// claim here in response to volume deletion prevents the claim from
|
||||
// waiting until the next sync period for its Lost status.
|
||||
err := ctrl.syncClaim(claim)
|
||||
if err != nil {
|
||||
if errors.IsConflict(err) {
|
||||
// Version conflict error happens quite often and the
|
||||
// controller recovers from it easily.
|
||||
glog.V(3).Infof("PersistentVolumeController could not update volume %q from deleteClaim handler: %+v", claimToClaimKey(claim), err)
|
||||
} else {
|
||||
glog.Errorf("PersistentVolumeController could not update volume %q from deleteClaim handler: %+v", claimToClaimKey(claim), err)
|
||||
}
|
||||
}
|
||||
} else {
|
||||
glog.Errorf("Cannot convert object from claim cache to claim %q!?: %+v", claimrefToClaimKey(volume.Spec.ClaimRef), claimObj)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// 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)
|
||||
return
|
||||
}
|
||||
if err := ctrl.syncClaim(claim); err != nil {
|
||||
if errors.IsConflict(err) {
|
||||
// Version conflict error happens quite often and the controller
|
||||
// recovers from it easily.
|
||||
glog.V(3).Infof("PersistentVolumeController could not add claim %q: %+v", claimToClaimKey(claim), err)
|
||||
} else {
|
||||
glog.Errorf("PersistentVolumeController could not add claim %q: %+v", claimToClaimKey(claim), err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// 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)
|
||||
return
|
||||
}
|
||||
if err := ctrl.syncClaim(newClaim); err != nil {
|
||||
if errors.IsConflict(err) {
|
||||
// Version conflict error happens quite often and the controller
|
||||
// recovers from it easily.
|
||||
glog.V(3).Infof("PersistentVolumeController could not update claim %q: %+v", claimToClaimKey(newClaim), err)
|
||||
} else {
|
||||
glog.Errorf("PersistentVolumeController could not update claim %q: %+v", claimToClaimKey(newClaim), err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// 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
|
||||
|
||||
claim, ok = obj.(*api.PersistentVolumeClaim)
|
||||
if !ok {
|
||||
if unknown, ok := obj.(cache.DeletedFinalStateUnknown); ok && unknown.Obj != nil {
|
||||
claim, ok = unknown.Obj.(*api.PersistentVolumeClaim)
|
||||
if !ok {
|
||||
glog.Errorf("Expected PersistentVolumeClaim but deleteClaim received %+v", unknown.Obj)
|
||||
return
|
||||
}
|
||||
} else {
|
||||
glog.Errorf("Expected PersistentVolumeClaim but deleteClaim received %+v", obj)
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
if !ok || claim == nil {
|
||||
return
|
||||
}
|
||||
|
||||
if pvObj, exists, _ := ctrl.volumes.store.GetByKey(claim.Spec.VolumeName); exists {
|
||||
if volume, ok = pvObj.(*api.PersistentVolume); ok {
|
||||
// sync the volume when its claim is deleted. Explicitly sync'ing the
|
||||
// volume here in response to claim deletion prevents the volume from
|
||||
// waiting until the next sync period for its Release.
|
||||
if volume != nil {
|
||||
err := ctrl.syncVolume(volume)
|
||||
if err != nil {
|
||||
if errors.IsConflict(err) {
|
||||
// Version conflict error happens quite often and the
|
||||
// controller recovers from it easily.
|
||||
glog.V(3).Infof("PersistentVolumeController could not update volume %q from deleteClaim handler: %+v", volume.Name, err)
|
||||
} else {
|
||||
glog.Errorf("PersistentVolumeController could not update volume %q from deleteClaim handler: %+v", volume.Name, err)
|
||||
}
|
||||
}
|
||||
}
|
||||
} else {
|
||||
glog.Errorf("Cannot convert object from volume cache to volume %q!?: %+v", claim.Spec.VolumeName, pvObj)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Run starts all of this controller's control loops
|
||||
func (ctrl *PersistentVolumeController) Run() {
|
||||
glog.V(4).Infof("starting PersistentVolumeController")
|
||||
|
||||
if ctrl.volumeControllerStopCh == nil {
|
||||
ctrl.volumeControllerStopCh = make(chan struct{})
|
||||
go ctrl.volumeController.Run(ctrl.volumeControllerStopCh)
|
||||
}
|
||||
|
||||
if ctrl.claimControllerStopCh == nil {
|
||||
ctrl.claimControllerStopCh = make(chan struct{})
|
||||
go ctrl.claimController.Run(ctrl.claimControllerStopCh)
|
||||
}
|
||||
}
|
||||
|
||||
// Stop gracefully shuts down this controller
|
||||
func (ctrl *PersistentVolumeController) Stop() {
|
||||
glog.V(4).Infof("stopping PersistentVolumeController")
|
||||
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()
|
||||
}
|
||||
|
||||
// Stateless functions
|
||||
|
||||
func hasAnnotation(obj api.ObjectMeta, ann string) bool {
|
||||
_, found := obj.Annotations[ann]
|
||||
return found
|
||||
}
|
||||
|
||||
func setAnnotation(obj *api.ObjectMeta, ann string, value string) {
|
||||
if obj.Annotations == nil {
|
||||
obj.Annotations = make(map[string]string)
|
||||
}
|
||||
obj.Annotations[ann] = value
|
||||
}
|
||||
|
||||
func getClaimStatusForLogging(claim *api.PersistentVolumeClaim) string {
|
||||
bound := hasAnnotation(claim.ObjectMeta, annBindCompleted)
|
||||
boundByController := hasAnnotation(claim.ObjectMeta, annBoundByController)
|
||||
|
||||
return fmt.Sprintf("phase: %s, bound to: %q, bindCompleted: %v, boundByController: %v", claim.Status.Phase, claim.Spec.VolumeName, bound, boundByController)
|
||||
}
|
||||
|
||||
func getVolumeStatusForLogging(volume *api.PersistentVolume) string {
|
||||
boundByController := hasAnnotation(volume.ObjectMeta, annBoundByController)
|
||||
claimName := ""
|
||||
if volume.Spec.ClaimRef != nil {
|
||||
claimName = fmt.Sprintf("%s/%s (uid: %s)", volume.Spec.ClaimRef.Namespace, volume.Spec.ClaimRef.Name, volume.Spec.ClaimRef.UID)
|
||||
}
|
||||
return fmt.Sprintf("phase: %s, bound to: %q, boundByController: %v", volume.Status.Phase, claimName, boundByController)
|
||||
}
|
||||
|
||||
// isVolumeBoundToClaim returns true, if given volume is pre-bound or bound
|
||||
// to specific claim. Both claim.Name and claim.Namespace must be equal.
|
||||
// If claim.UID is present in volume.Spec.ClaimRef, it must be equal too.
|
||||
func isVolumeBoundToClaim(volume *api.PersistentVolume, claim *api.PersistentVolumeClaim) bool {
|
||||
if volume.Spec.ClaimRef == nil {
|
||||
return false
|
||||
}
|
||||
if claim.Name != volume.Spec.ClaimRef.Name || claim.Namespace != volume.Spec.ClaimRef.Namespace {
|
||||
return false
|
||||
}
|
||||
if volume.Spec.ClaimRef.UID != "" && claim.UID != volume.Spec.ClaimRef.UID {
|
||||
return false
|
||||
}
|
||||
return true
|
||||
}
|
||||
Reference in New Issue
Block a user