add VolumeGroupSnapshotClass for CephFS and RBD #2859
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,175 @@ | ||
| package storagecluster | ||
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| import ( | ||
| "fmt" | ||
| "reflect" | ||
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| groupsnapapi "github.com/kubernetes-csi/external-snapshotter/client/v8/apis/volumegroupsnapshot/v1beta1" | ||
| snapapi "github.com/kubernetes-csi/external-snapshotter/client/v8/apis/volumesnapshot/v1" | ||
| ocsv1 "github.com/red-hat-storage/ocs-operator/api/v4/v1" | ||
| "k8s.io/apimachinery/pkg/api/errors" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "k8s.io/klog/v2" | ||
| "sigs.k8s.io/controller-runtime/pkg/reconcile" | ||
| ) | ||
|
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| type groupSnapshotterType string | ||
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| type ocsGroupSnapshotClass struct{} | ||
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| const ( | ||
| rbdGroupSnapshotter groupSnapshotterType = "rbd" | ||
| cephfsGroupSnapshotter groupSnapshotterType = "cephfs" | ||
| ) | ||
|
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| const ( | ||
| groupSnapshotterSecretName = "csi.storage.k8s.io/group-snapshotter-secret-name" | ||
| groupSnapshotterSecretNamespace = "csi.storage.k8s.io/group-snapshotter-secret-namespace" | ||
| ) | ||
|
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| type GroupSnapshotClassConfiguration struct { | ||
| groupSnapshotClass *groupsnapapi.VolumeGroupSnapshotClass | ||
| reconcileStrategy ReconcileStrategy | ||
| disable bool | ||
| } | ||
|
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| func newVolumeGroupSnapshotClass(instance *ocsv1.StorageCluster, groupSnaphotterType groupSnapshotterType) *groupsnapapi.VolumeGroupSnapshotClass { | ||
| paramKey, paramValue := setParameterBasedOnSnapshotterType(instance, groupSnaphotterType) | ||
| groupSnapClass := &groupsnapapi.VolumeGroupSnapshotClass{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: generateNameForGroupSnapshotClass(instance, groupSnaphotterType), | ||
| }, | ||
| Driver: generateNameForSnapshotClassDriver(SnapshotterType(groupSnaphotterType)), | ||
| Parameters: map[string]string{ | ||
| "clusterID": instance.Namespace, | ||
| paramKey: paramValue, | ||
| groupSnapshotterSecretName: generateNameForSnapshotClassSecret(instance, SnapshotterType(groupSnaphotterType)), | ||
| groupSnapshotterSecretNamespace: instance.Namespace, | ||
| }, | ||
| DeletionPolicy: snapapi.VolumeSnapshotContentDelete, | ||
| } | ||
| return groupSnapClass | ||
| } | ||
|
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| func newCephFilesystemGroupSnapshotClassConfiguration(instance *ocsv1.StorageCluster) GroupSnapshotClassConfiguration { | ||
| return GroupSnapshotClassConfiguration{ | ||
| groupSnapshotClass: newVolumeGroupSnapshotClass(instance, cephfsGroupSnapshotter), | ||
| reconcileStrategy: ReconcileStrategy(instance.Spec.ManagedResources.CephFilesystems.ReconcileStrategy), | ||
| } | ||
| } | ||
|
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| func newCephBlockPoolGroupSnapshotClassConfiguration(instance *ocsv1.StorageCluster) GroupSnapshotClassConfiguration { | ||
| return GroupSnapshotClassConfiguration{ | ||
| groupSnapshotClass: newVolumeGroupSnapshotClass(instance, rbdGroupSnapshotter), | ||
| reconcileStrategy: ReconcileStrategy(instance.Spec.ManagedResources.CephBlockPools.ReconcileStrategy), | ||
| } | ||
| } | ||
|
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| func newGroupSnapshotClassConfigurations(instance *ocsv1.StorageCluster) []GroupSnapshotClassConfiguration { | ||
| vsccs := []GroupSnapshotClassConfiguration{ | ||
| newCephFilesystemGroupSnapshotClassConfiguration(instance), | ||
| newCephBlockPoolGroupSnapshotClassConfiguration(instance), | ||
| } | ||
| return vsccs | ||
| } | ||
|
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| func (r *StorageClusterReconciler) createGroupSnapshotClasses(vsccs []GroupSnapshotClassConfiguration) error { | ||
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| for _, vscc := range vsccs { | ||
| if vscc.reconcileStrategy == ReconcileStrategyIgnore || vscc.disable { | ||
| continue | ||
| } | ||
|
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| vsc := vscc.groupSnapshotClass | ||
| existing := &groupsnapapi.VolumeGroupSnapshotClass{} | ||
| err := r.Client.Get(r.ctx, types.NamespacedName{Name: vsc.Name, Namespace: vsc.Namespace}, existing) | ||
| if err != nil { | ||
| if errors.IsNotFound(err) { | ||
| // Since the SnapshotClass is not found, we will create a new one | ||
| r.Log.Info("Creating GroupSnapshotClass.", "GroupSnapshotClass", klog.KRef("", vsc.Name)) | ||
| err = r.Client.Create(r.ctx, vsc) | ||
| if err != nil { | ||
| r.Log.Error(err, "Failed to create GroupSnapshotClass.", "GroupSnapshotClass", klog.KRef("", vsc.Name)) | ||
| return err | ||
| } | ||
| // no error, continue with the next iteration | ||
| continue | ||
| } | ||
|
|
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| r.Log.Error(err, "Failed to 'Get' GroupSnapshotClass.", "GroupSnapshotClass", klog.KRef("", vsc.Name)) | ||
| return err | ||
| } | ||
| if vscc.reconcileStrategy == ReconcileStrategyInit { | ||
| return nil | ||
| } | ||
| if existing.DeletionTimestamp != nil { | ||
| return fmt.Errorf("failed to restore GroupSnapshotClass %q because it is marked for deletion", existing.Name) | ||
| } | ||
| // if there is a mismatch in the parameters of existing vs created resources, | ||
| if !reflect.DeepEqual(vsc.Parameters, existing.Parameters) { | ||
| // we have to update the existing SnapshotClass | ||
| r.Log.Info("GroupSnapshotClass needs to be updated", "GroupSnapshotClass", klog.KRef("", existing.Name)) | ||
| existing.ObjectMeta.OwnerReferences = vsc.ObjectMeta.OwnerReferences | ||
| vsc.ObjectMeta = existing.ObjectMeta | ||
| if err := r.Client.Update(r.ctx, vsc); err != nil { | ||
| r.Log.Error(err, "GroupSnapshotClass updation failed.", "GroupSnapshotClass", klog.KRef("", existing.Name)) | ||
| return err | ||
| } | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
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| func (obj *ocsGroupSnapshotClass) ensureCreated(r *StorageClusterReconciler, instance *ocsv1.StorageCluster) (reconcile.Result, error) { | ||
| if !r.AvailableCrds[VolumeGroupSnapshotClassCrdName] { | ||
| r.Log.Info("VolumeGroupSnapshotClass CRD is not available") | ||
| return reconcile.Result{}, nil | ||
| } | ||
|
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| vgsc := newGroupSnapshotClassConfigurations(instance) | ||
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| err := r.createGroupSnapshotClasses(vgsc) | ||
| if err != nil { | ||
| return reconcile.Result{}, err | ||
| } | ||
|
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| return reconcile.Result{}, nil | ||
| } | ||
|
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| func (obj *ocsGroupSnapshotClass) ensureDeleted(r *StorageClusterReconciler, instance *ocsv1.StorageCluster) (reconcile.Result, error) { | ||
| if !r.AvailableCrds[VolumeGroupSnapshotClassCrdName] { | ||
| r.Log.Info("VolumeGroupSnapshotClass CRD doesn't exist") | ||
| return reconcile.Result{}, nil | ||
| } | ||
|
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| vgscs := newGroupSnapshotClassConfigurations(instance) | ||
| for _, vgsc := range vgscs { | ||
| sc := vgsc.groupSnapshotClass | ||
| existing := groupsnapapi.VolumeGroupSnapshotClass{} | ||
| err := r.Client.Get(r.ctx, types.NamespacedName{Name: sc.Name, Namespace: sc.Namespace}, &existing) | ||
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| switch { | ||
| case err == nil: | ||
| if existing.DeletionTimestamp != nil { | ||
| r.Log.Info("Uninstall: GroupSnapshotClass is already marked for deletion.", "GroupSnapshotClass", klog.KRef("", existing.Name)) | ||
| break | ||
| } | ||
|
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| r.Log.Info("Uninstall: Deleting GroupSnapshotClass.", "GroupSnapshotClass", klog.KRef("", existing.Name)) | ||
| existing.ObjectMeta.OwnerReferences = sc.ObjectMeta.OwnerReferences | ||
| sc.ObjectMeta = existing.ObjectMeta | ||
|
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| err = r.Client.Delete(r.ctx, sc) | ||
| if err != nil && !errors.IsNotFound(err) { | ||
| r.Log.Error(err, "Uninstall: Error deleting the GroupSnapshotClass.", "GroupSnapshotClass", klog.KRef("", existing.Name)) | ||
| return reconcile.Result{}, err | ||
| } | ||
| case errors.IsNotFound(err): | ||
| r.Log.Info("Uninstall: GroupSnapshotClass not found, nothing to do.", "GroupSnapshotClass", klog.KRef("", sc.Name)) | ||
| default: | ||
| r.Log.Error(err, "Uninstall: Error while getting GroupSnapshotClass.", "GroupSnapshotClass", klog.KRef("", sc.Name)) | ||
|
There was a problem hiding this comment. dont we need to return There was a problem hiding this comment. @Madhu-1 For the ensureCreated function the error does need to be returned. For the ensureDeleted function the error is being returned in the first case. Only when it is not found we are logging it. This could be the case when r.AvailableCrds[VolumeGroupSnapshotClassCrdName] is false. There was a problem hiding this comment. i think in that ase if will be |
||
| } | ||
| } | ||
| return reconcile.Result{}, nil | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| package storagecluster | ||
|
|
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| import ( | ||
| "context" | ||
| "testing" | ||
|
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| groupsnapapi "github.com/kubernetes-csi/external-snapshotter/client/v8/apis/volumegroupsnapshot/v1beta1" | ||
| "github.com/stretchr/testify/assert" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "sigs.k8s.io/controller-runtime/pkg/reconcile" | ||
| ) | ||
|
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| func TestVolumeGroupSnapshotterClasses(t *testing.T) { | ||
| t, reconciler, _, request := initStorageClusterResourceCreateUpdateTest(t, nil, nil) | ||
| assertVolumeGroupSnapshotterClasses(t, reconciler, request) | ||
| } | ||
|
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| func assertVolumeGroupSnapshotterClasses(t *testing.T, reconciler StorageClusterReconciler, | ||
| request reconcile.Request) { | ||
| rbdVSCName := "ocsinit-rbdplugin-groupsnapclass" | ||
| cephfsVSCName := "ocsinit-cephfsplugin-groupsnapclass" | ||
| vscNames := []string{cephfsVSCName, rbdVSCName} | ||
| for _, eachVSCName := range vscNames { | ||
| actualVSC := &groupsnapapi.VolumeGroupSnapshotClass{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: eachVSCName, | ||
| }, | ||
| } | ||
| request.Name = eachVSCName | ||
| err := reconciler.Client.Get(context.TODO(), request.NamespacedName, actualVSC) | ||
| assert.NoError(t, err) | ||
| } | ||
| } |
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where are we setting filesystem name and blockpool in the class?
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it is set by the
driverNameanddriverValuevariables whose values are assigned by thesetParameterBasedOnSnapshotterTypefunction.There was a problem hiding this comment.
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Right, this confused me a bit too, it is well hidden.
driverNameis not really a very suitable name, as the parameter is calledfsNamefor CephFS orpoolfor RBD. But, I expect this to work correctly. Having a test that validates these kind of parameters would be nice to have.