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rbd: controller to regenerate volume group omap data
This commit adds new controller that watches for the VolumeGroupReplicationContent and regenerates the OMAP data if it doesn't exists. Signed-off-by: Praveen M <[email protected]>
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200 changes: 200 additions & 0 deletions
200
internal/controller/volumegroup/volumegroupreplicationcontent.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,200 @@ | ||
| /* | ||
| Copyright 2024 The Ceph-CSI Authors. | ||
| 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 volumegroup | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
|
|
||
| replicationv1alpha1 "github.com/csi-addons/kubernetes-csi-addons/api/replication.storage/v1alpha1" | ||
| corev1 "k8s.io/api/core/v1" | ||
| apierrors "k8s.io/apimachinery/pkg/api/errors" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/controller" | ||
| "sigs.k8s.io/controller-runtime/pkg/handler" | ||
| "sigs.k8s.io/controller-runtime/pkg/manager" | ||
| "sigs.k8s.io/controller-runtime/pkg/reconcile" | ||
| "sigs.k8s.io/controller-runtime/pkg/source" | ||
|
|
||
| ctrl "github.com/ceph/ceph-csi/internal/controller" | ||
| "github.com/ceph/ceph-csi/internal/rbd" | ||
| "github.com/ceph/ceph-csi/internal/util" | ||
| "github.com/ceph/ceph-csi/internal/util/log" | ||
| ) | ||
|
|
||
| type ReconcileVGRContent struct { | ||
| client client.Client | ||
| config ctrl.Config | ||
| Locks *util.VolumeLocks | ||
| } | ||
|
|
||
| var ( | ||
| _ reconcile.Reconciler = &ReconcileVGRContent{} | ||
| _ ctrl.Manager = &ReconcileVGRContent{} | ||
| ) | ||
|
|
||
| const ( | ||
| secretNameParameterName = "replication.storage.openshift.io/group-replication-secret-name" | ||
| secretNamespaceParameterName = "replication.storage.openshift.io/group-replication-secret-namespace" | ||
| ) | ||
|
|
||
| // Init will add the ReconcileVGRContent to the list. | ||
| func Init() { | ||
| // add ReconcileVGRContent to the list | ||
| ctrl.ControllerList = append(ctrl.ControllerList, &ReconcileVGRContent{}) | ||
| } | ||
|
|
||
| // Add adds the newVGRContentReconciler. | ||
| func (r *ReconcileVGRContent) Add(mgr manager.Manager, config ctrl.Config) error { | ||
| return add(mgr, newVGRContentReconciler(mgr, config)) | ||
| } | ||
|
|
||
| // newVGRContentReconciler returns a ReconcileVGRContent. | ||
| func newVGRContentReconciler(mgr manager.Manager, config ctrl.Config) reconcile.Reconciler { | ||
| r := &ReconcileVGRContent{ | ||
| client: mgr.GetClient(), | ||
| config: config, | ||
| Locks: util.NewVolumeLocks(), | ||
| } | ||
|
|
||
| return r | ||
| } | ||
|
|
||
| func add(mgr manager.Manager, r reconcile.Reconciler) error { | ||
| // Create a new controller | ||
| c, err := controller.New( | ||
| "vgrcontent-controller", | ||
| mgr, | ||
| controller.Options{MaxConcurrentReconciles: 1, Reconciler: r}) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| // Watch for changes to VolumeGroupReplicationContent | ||
| err = c.Watch(source.Kind( | ||
| mgr.GetCache(), | ||
| &replicationv1alpha1.VolumeGroupReplicationContent{}, | ||
| &handler.TypedEnqueueRequestForObject[*replicationv1alpha1.VolumeGroupReplicationContent]{}), | ||
| ) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to watch the changes: %w", err) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (r *ReconcileVGRContent) getSecrets( | ||
| ctx context.Context, | ||
| name, | ||
| namespace string, | ||
| ) (map[string]string, error) { | ||
| if name == "" || namespace == "" { | ||
| return nil, errors.New("secret name or secret namespace is empty") | ||
| } | ||
| secret := &corev1.Secret{} | ||
| err := r.client.Get(ctx, types.NamespacedName{Name: name, Namespace: namespace}, secret) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error getting secret %s in namespace %s: %w", name, namespace, err) | ||
| } | ||
|
|
||
| secrets := map[string]string{} | ||
| for key, value := range secret.Data { | ||
| secrets[key] = string(value) | ||
| } | ||
|
|
||
| return secrets, nil | ||
| } | ||
|
|
||
| func (r *ReconcileVGRContent) reconcileVGRContent(ctx context.Context, obj runtime.Object) error { | ||
| vgrc, ok := obj.(*replicationv1alpha1.VolumeGroupReplicationContent) | ||
| if !ok { | ||
| return nil | ||
| } | ||
| if vgrc.Spec.Provisioner != r.config.DriverName { | ||
| return nil | ||
| } | ||
|
|
||
| reqName := vgrc.Name | ||
| groupHandle := vgrc.Spec.VolumeGroupReplicationHandle | ||
| volumeIds := vgrc.Spec.Source.VolumeHandles | ||
|
|
||
| if groupHandle == "" { | ||
| return errors.New("volume group replication handle is empty") | ||
| } | ||
|
|
||
| vgrClass := &replicationv1alpha1.VolumeGroupReplicationClass{} | ||
| err := r.client.Get(ctx, types.NamespacedName{Name: vgrc.Spec.VolumeGroupReplicationClassName}, vgrClass) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if ok = r.Locks.TryAcquire(groupHandle); !ok { | ||
| return fmt.Errorf("failed to acquire lock for group handle %s", groupHandle) | ||
| } | ||
| defer r.Locks.Release(groupHandle) | ||
|
|
||
| parameters := vgrClass.Spec.Parameters | ||
| secretName := vgrClass.Spec.Parameters[secretNameParameterName] | ||
| secretNamespace := vgrClass.Spec.Parameters[secretNamespaceParameterName] | ||
|
|
||
| secrets, err := r.getSecrets(ctx, secretName, secretNamespace) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| mgr := rbd.NewManager(r.config.InstanceID, parameters, secrets) | ||
| defer mgr.Destroy(ctx) | ||
|
|
||
| groupID, err := mgr.RegenerateVolumeGroupJournal(ctx, groupHandle, reqName, volumeIds) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if groupID != groupHandle { | ||
| log.DebugLog(ctx, "groupHandle changed from %s to %s", groupHandle, groupID) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| // Reconcile reconciles the VolumeGroupReplicationContent object and creates a new omap entries | ||
| // for the volume group. | ||
| func (r *ReconcileVGRContent) Reconcile(ctx context.Context, | ||
| request reconcile.Request, | ||
| ) (reconcile.Result, error) { | ||
| vgrc := &replicationv1alpha1.VolumeGroupReplicationContent{} | ||
| err := r.client.Get(ctx, request.NamespacedName, vgrc) | ||
| if err != nil { | ||
| if apierrors.IsNotFound(err) { | ||
| return reconcile.Result{}, nil | ||
| } | ||
|
|
||
| return reconcile.Result{}, err | ||
| } | ||
| // Check if the object is under deletion | ||
| if !vgrc.GetDeletionTimestamp().IsZero() { | ||
| return reconcile.Result{}, nil | ||
| } | ||
|
|
||
| err = r.reconcileVGRContent(ctx, vgrc) | ||
| if err != nil { | ||
| return reconcile.Result{}, err | ||
| } | ||
|
|
||
| return reconcile.Result{}, nil | ||
| } |
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