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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
internal/controller/volumegroup/volumegroupreplicationcontent.go
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/* | ||
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 | ||
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import ( | ||
"context" | ||
"errors" | ||
"fmt" | ||
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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" | ||
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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" | ||
) | ||
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type ReconcileVGRContent struct { | ||
client client.Client | ||
config ctrl.Config | ||
Locks *util.VolumeLocks | ||
} | ||
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var ( | ||
_ reconcile.Reconciler = &ReconcileVGRContent{} | ||
_ ctrl.Manager = &ReconcileVGRContent{} | ||
) | ||
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const ( | ||
secretNameParameterName = "replication.storage.openshift.io/group-replication-secret-name" | ||
secretNamespaceParameterName = "replication.storage.openshift.io/group-replication-secret-namespace" | ||
) | ||
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// Init will add the ReconcileVGRContent to the list. | ||
func Init() { | ||
// add ReconcileVGRContent to the list | ||
ctrl.ControllerList = append(ctrl.ControllerList, &ReconcileVGRContent{}) | ||
} | ||
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// Add adds the newVGRContentReconciler. | ||
func (r *ReconcileVGRContent) Add(mgr manager.Manager, config ctrl.Config) error { | ||
return add(mgr, newVGRContentReconciler(mgr, config)) | ||
} | ||
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// newVGRContentReconciler returns a ReconcileVGRContent. | ||
func newVGRContentReconciler(mgr manager.Manager, config ctrl.Config) reconcile.Reconciler { | ||
r := &ReconcileVGRContent{ | ||
client: mgr.GetClient(), | ||
config: config, | ||
Locks: util.NewVolumeLocks(), | ||
} | ||
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return r | ||
} | ||
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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 | ||
} | ||
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// 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) | ||
} | ||
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return nil | ||
} | ||
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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) | ||
} | ||
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secrets := map[string]string{} | ||
for key, value := range secret.Data { | ||
secrets[key] = string(value) | ||
} | ||
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return secrets, nil | ||
} | ||
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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 | ||
} | ||
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reqName := vgrc.Name | ||
groupHandle := vgrc.Spec.VolumeGroupReplicationHandle | ||
volumeIds := vgrc.Spec.Source.VolumeHandles | ||
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if groupHandle == "" { | ||
return errors.New("volume group replication handle is empty") | ||
} | ||
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vgrClass := &replicationv1alpha1.VolumeGroupReplicationClass{} | ||
err := r.client.Get(ctx, types.NamespacedName{Name: vgrc.Spec.VolumeGroupReplicationClassName}, vgrClass) | ||
if err != nil { | ||
return err | ||
} | ||
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if ok = r.Locks.TryAcquire(groupHandle); !ok { | ||
return fmt.Errorf("failed to acquire lock for group handle %s", groupHandle) | ||
} | ||
defer r.Locks.Release(groupHandle) | ||
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parameters := vgrClass.Spec.Parameters | ||
secretName := vgrClass.Spec.Parameters[secretNameParameterName] | ||
secretNamespace := vgrClass.Spec.Parameters[secretNamespaceParameterName] | ||
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secrets, err := r.getSecrets(ctx, secretName, secretNamespace) | ||
if err != nil { | ||
return err | ||
} | ||
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mgr := rbd.NewManager(r.config.InstanceID, parameters, secrets) | ||
defer mgr.Destroy(ctx) | ||
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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) | ||
} | ||
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return nil | ||
} | ||
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// 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 | ||
} | ||
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return reconcile.Result{}, err | ||
} | ||
// Check if the object is under deletion | ||
if !vgrc.GetDeletionTimestamp().IsZero() { | ||
return reconcile.Result{}, nil | ||
} | ||
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err = r.reconcileVGRContent(ctx, vgrc) | ||
if err != nil { | ||
return reconcile.Result{}, err | ||
} | ||
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return reconcile.Result{}, nil | ||
} |