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clone-controller-base.go
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clone-controller-base.go
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/*
Copyright 2022 The CDI 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 datavolume
import (
"context"
"fmt"
"reflect"
"github.com/pkg/errors"
corev1 "k8s.io/api/core/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"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/controller/controllerutil"
"sigs.k8s.io/controller-runtime/pkg/event"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
cdiv1 "kubevirt.io/containerized-data-importer-api/pkg/apis/core/v1beta1"
"kubevirt.io/containerized-data-importer/pkg/controller/clone"
cc "kubevirt.io/containerized-data-importer/pkg/controller/common"
"kubevirt.io/containerized-data-importer/pkg/controller/populators"
"kubevirt.io/containerized-data-importer/pkg/token"
)
const (
// ErrUnableToClone provides a const to indicate some errors are blocking the clone
ErrUnableToClone = "ErrUnableToClone"
// CloneScheduled provides a const to indicate clone is scheduled
CloneScheduled = "CloneScheduled"
// CloneInProgress provides a const to indicate clone is in progress
CloneInProgress = "CloneInProgress"
// SnapshotForSmartCloneInProgress provides a const to indicate snapshot creation for smart-clone is in progress
SnapshotForSmartCloneInProgress = "SnapshotForSmartCloneInProgress"
// CloneFromSnapshotSourceInProgress provides a const to indicate clone from snapshot source is in progress
CloneFromSnapshotSourceInProgress = "CloneFromSnapshotSourceInProgress"
// SnapshotForSmartCloneCreated provides a const to indicate snapshot creation for smart-clone has been completed
SnapshotForSmartCloneCreated = "SnapshotForSmartCloneCreated"
// CSICloneInProgress provides a const to indicate csi volume clone is in progress
CSICloneInProgress = "CSICloneInProgress"
// CloneFailed provides a const to indicate clone has failed
CloneFailed = "CloneFailed"
// CloneSucceeded provides a const to indicate clone has succeeded
CloneSucceeded = "CloneSucceeded"
// MessageCloneScheduled provides a const to form clone is scheduled message
MessageCloneScheduled = "Cloning from %s/%s into %s/%s scheduled"
// MessageCloneInProgress provides a const to form clone is in progress message
MessageCloneInProgress = "Cloning from %s/%s into %s/%s in progress"
// MessageCloneFailed provides a const to form clone has failed message
MessageCloneFailed = "Cloning from %s/%s into %s/%s failed"
// MessageCloneSucceeded provides a const to form clone has succeeded message
MessageCloneSucceeded = "Successfully cloned from %s/%s into %s/%s"
// MessageSmartCloneInProgress provides a const to form snapshot for smart-clone is in progress message
MessageSmartCloneInProgress = "Creating snapshot for smart-clone is in progress (for pvc %s/%s)"
// MessageCloneFromSnapshotSourceInProgress provides a const to form clone from snapshot source is in progress message
MessageCloneFromSnapshotSourceInProgress = "Creating PVC from snapshot source is in progress (for %s %s/%s)"
// MessageCsiCloneInProgress provides a const to form a CSI Volume Clone in progress message
MessageCsiCloneInProgress = "CSI Volume clone in progress (for pvc %s/%s)"
// ExpansionInProgress is const representing target PVC expansion
ExpansionInProgress = "ExpansionInProgress"
// MessageExpansionInProgress is a const for reporting target expansion
MessageExpansionInProgress = "Expanding PersistentVolumeClaim for DataVolume %s/%s"
// NamespaceTransferInProgress is const representing target PVC transfer
NamespaceTransferInProgress = "NamespaceTransferInProgress"
// MessageNamespaceTransferInProgress is a const for reporting target transfer
MessageNamespaceTransferInProgress = "Transferring PersistentVolumeClaim for DataVolume %s/%s"
// SizeDetectionPodCreated provides a const to indicate that the size-detection pod has been created (reason)
SizeDetectionPodCreated = "SizeDetectionPodCreated"
// MessageSizeDetectionPodCreated provides a const to indicate that the size-detection pod has been created (message)
MessageSizeDetectionPodCreated = "Size-detection pod created"
// SizeDetectionPodNotReady reports that the size-detection pod has not finished its execution (reason)
SizeDetectionPodNotReady = "SizeDetectionPodNotReady"
// MessageSizeDetectionPodNotReady reports that the size-detection pod has not finished its execution (message)
MessageSizeDetectionPodNotReady = "The size detection pod is not finished yet"
// ImportPVCNotReady reports that it's not yet possible to access the source PVC (reason)
ImportPVCNotReady = "ImportPVCNotReady"
// MessageImportPVCNotReady reports that it's not yet possible to access the source PVC (message)
MessageImportPVCNotReady = "The source PVC is not fully imported"
// CloneValidationFailed reports that a clone wasn't admitted by our validation mechanism (reason)
CloneValidationFailed = "CloneValidationFailed"
// MessageCloneValidationFailed reports that a clone wasn't admitted by our validation mechanism (message)
MessageCloneValidationFailed = "The clone doesn't meet the validation requirements: %s"
// CloneWithoutSource reports that the source of a clone doesn't exists (reason)
CloneWithoutSource = "CloneWithoutSource"
// MessageCloneWithoutSource reports that the source of a clone doesn't exists (message)
MessageCloneWithoutSource = "The source %s %s doesn't exist"
// PrepClaimInProgress is const representing target PVC prep
PrepClaimInProgress = "PrepClaimInProgress"
// MessagePrepClaimInProgress is a const for reporting target prep
MessagePrepClaimInProgress = "Prepping PersistentVolumeClaim for DataVolume %s/%s"
// RebindInProgress is const representing target PVC rebind
RebindInProgress = "RebindInProgress"
// MessageRebindInProgress is a const for reporting target rebind
MessageRebindInProgress = "Rebinding PersistentVolumeClaim for DataVolume %s/%s"
// NoPopulator reports CDI populator is not used so we fallback to host-assisted cloning (reason)
NoPopulator = "NoPopulator"
// NoPopulatorMessage reports CDI populator is not used so we fallback to host-assisted cloning (message)
NoPopulatorMessage = "In tree storage class does not support snapshot/clone"
// AnnCSICloneRequest annotation associates object with CSI Clone Request
AnnCSICloneRequest = "cdi.kubevirt.io/CSICloneRequest"
// AnnVirtualImageSize annotation contains the Virtual Image size of a PVC used for host-assisted cloning
AnnVirtualImageSize = "cdi.Kubervirt.io/virtualSize"
// AnnSourceCapacity annotation contains the storage capacity of a PVC used for host-assisted cloning
AnnSourceCapacity = "cdi.Kubervirt.io/sourceCapacity"
crossNamespaceFinalizer = "cdi.kubevirt.io/dataVolumeFinalizer"
)
// CloneReconcilerBase members
type CloneReconcilerBase struct {
ReconcilerBase
clonerImage string
importerImage string
pullPolicy string
cloneSourceAPIGroup *string
cloneSourceKind string
shortTokenValidator token.Validator
longTokenValidator token.Validator
tokenGenerator token.Generator
}
func (r *CloneReconcilerBase) addVolumeCloneSourceWatch(mgr manager.Manager, datavolumeController controller.Controller) error {
return datavolumeController.Watch(source.Kind(mgr.GetCache(), &cdiv1.VolumeCloneSource{}, handler.TypedEnqueueRequestsFromMapFunc[*cdiv1.VolumeCloneSource](
func(ctx context.Context, obj *cdiv1.VolumeCloneSource) []reconcile.Request {
var err error
var hasDataVolumeOwner bool
var ownerNamespace, ownerName string
ownerRef := metav1.GetControllerOf(obj)
if ownerRef != nil && ownerRef.Kind == "DataVolume" {
hasDataVolumeOwner = true
ownerNamespace = obj.GetNamespace()
ownerName = ownerRef.Name
} else if hasAnnOwnedByDataVolume(obj) {
hasDataVolumeOwner = true
ownerNamespace, ownerName, err = getAnnOwnedByDataVolume(obj)
if err != nil {
return nil
}
}
if !hasDataVolumeOwner {
return nil
}
dv := &cdiv1.DataVolume{
ObjectMeta: metav1.ObjectMeta{
Namespace: ownerNamespace,
Name: ownerName,
},
}
if err = r.client.Get(ctx, client.ObjectKeyFromObject(dv), dv); err != nil {
r.log.Info("Failed to get DataVolume", "error", err)
return nil
}
if err := r.populateSourceIfSourceRef(dv); err != nil {
r.log.Info("Failed to check DataSource", "error", err)
return nil
}
if (r.cloneSourceKind == "PersistentVolumeClaim" && dv.Spec.Source.PVC != nil) ||
(r.cloneSourceKind == "VolumeSnapshot" && dv.Spec.Source.Snapshot != nil) {
return []reconcile.Request{{NamespacedName: types.NamespacedName{Namespace: ownerNamespace, Name: ownerName}}}
}
return nil
}),
))
}
func (r *CloneReconcilerBase) updatePVCForPopulation(dataVolume *cdiv1.DataVolume, pvc *corev1.PersistentVolumeClaim) error {
if dataVolume.Spec.Source.PVC == nil && dataVolume.Spec.Source.Snapshot == nil {
return errors.Errorf("no source set for clone datavolume")
}
if err := addCloneToken(dataVolume, pvc); err != nil {
return err
}
if err := cc.AddImmediateBindingAnnotationIfWFFCDisabled(pvc, r.featureGates); err != nil {
return err
}
if isCrossNamespaceClone(dataVolume) {
_, _, sourcNamespace := cc.GetCloneSourceInfo(dataVolume)
cc.AddAnnotation(pvc, populators.AnnDataSourceNamespace, sourcNamespace)
}
apiGroup := cc.AnnAPIGroup
pvc.Spec.DataSourceRef = &corev1.TypedObjectReference{
APIGroup: &apiGroup,
Kind: cdiv1.VolumeCloneSourceRef,
Name: volumeCloneSourceName(dataVolume),
}
return nil
}
func (r *CloneReconcilerBase) ensureExtendedTokenDV(dv *cdiv1.DataVolume) (bool, error) {
if !isCrossNamespaceClone(dv) {
return false, nil
}
_, ok := dv.Annotations[cc.AnnExtendedCloneToken]
if ok {
return false, nil
}
token, ok := dv.Annotations[cc.AnnCloneToken]
if !ok {
return false, fmt.Errorf("token missing")
}
payload, err := r.shortTokenValidator.Validate(token)
if err != nil {
return false, err
}
if payload.Params == nil {
payload.Params = make(map[string]string)
}
payload.Params["uid"] = string(dv.UID)
newToken, err := r.tokenGenerator.Generate(payload)
if err != nil {
return false, err
}
dv.Annotations[cc.AnnExtendedCloneToken] = newToken
return true, nil
}
func (r *CloneReconcilerBase) fallbackToHostAssisted(pvc *corev1.PersistentVolumeClaim) error {
pvcCpy := pvc.DeepCopy()
cc.AddAnnotation(pvcCpy, cc.AnnCloneType, string(cdiv1.CloneStrategyHostAssisted))
cc.AddAnnotation(pvcCpy, populators.AnnCloneFallbackReason, NoPopulatorMessage)
if !reflect.DeepEqual(pvc, pvcCpy) {
r.recorder.Event(pvcCpy, corev1.EventTypeWarning, NoPopulator, NoPopulatorMessage)
if err := r.updatePVC(pvcCpy); err != nil {
return err
}
}
return nil
}
func (r *CloneReconcilerBase) ensureExtendedTokenPVC(dv *cdiv1.DataVolume, pvc *corev1.PersistentVolumeClaim) error {
if !isCrossNamespaceClone(dv) {
return nil
}
_, ok := pvc.Annotations[cc.AnnExtendedCloneToken]
if ok {
return nil
}
token, ok := dv.Annotations[cc.AnnExtendedCloneToken]
if !ok {
return fmt.Errorf("token missing")
}
payload, err := r.longTokenValidator.Validate(token)
if err != nil {
return err
}
if payload.Params["uid"] != string(dv.UID) {
return fmt.Errorf("token uid mismatch")
}
// now use pvc uid
payload.Params["uid"] = string(pvc.UID)
newToken, err := r.tokenGenerator.Generate(payload)
if err != nil {
return err
}
pvc.Annotations[cc.AnnExtendedCloneToken] = newToken
if err := r.updatePVC(pvc); err != nil {
return err
}
return nil
}
func (r *CloneReconcilerBase) reconcileVolumeCloneSourceCR(syncState *dvSyncState) error {
dv := syncState.dvMutated
volumeCloneSource := &cdiv1.VolumeCloneSource{}
volumeCloneSourceName := volumeCloneSourceName(dv)
_, sourceName, sourceNamespace := cc.GetCloneSourceInfo(dv)
deletedOrSucceeded := dv.DeletionTimestamp != nil || dv.Status.Phase == cdiv1.Succeeded
exists, err := cc.GetResource(context.TODO(), r.client, sourceNamespace, volumeCloneSourceName, volumeCloneSource)
if err != nil {
return err
}
if deletedOrSucceeded || exists {
if deletedOrSucceeded && exists {
if err := r.client.Delete(context.TODO(), volumeCloneSource); err != nil {
if !k8serrors.IsNotFound(err) {
return err
}
}
}
if deletedOrSucceeded {
cc.RemoveFinalizer(dv, crossNamespaceFinalizer)
}
return nil
}
volumeCloneSource = &cdiv1.VolumeCloneSource{
ObjectMeta: metav1.ObjectMeta{
Name: volumeCloneSourceName,
Namespace: sourceNamespace,
},
Spec: cdiv1.VolumeCloneSourceSpec{
Source: corev1.TypedLocalObjectReference{
APIGroup: r.cloneSourceAPIGroup,
Kind: r.cloneSourceKind,
Name: sourceName,
},
Preallocation: dv.Spec.Preallocation,
},
}
if dv.Spec.PriorityClassName != "" {
volumeCloneSource.Spec.PriorityClassName = &dv.Spec.PriorityClassName
}
if sourceNamespace == dv.Namespace {
if err := controllerutil.SetControllerReference(dv, volumeCloneSource, r.scheme); err != nil {
return err
}
} else {
if err := setAnnOwnedByDataVolume(volumeCloneSource, dv); err != nil {
return err
}
}
if err := r.client.Create(context.TODO(), volumeCloneSource); err != nil {
if !k8serrors.IsAlreadyExists(err) {
return err
}
}
return nil
}
func (r *CloneReconcilerBase) syncCloneStatusPhase(syncState *dvSyncState, phase cdiv1.DataVolumePhase, pvc *corev1.PersistentVolumeClaim) error {
var event Event
dataVolume := syncState.dvMutated
r.setEventForPhase(dataVolume, phase, &event)
return r.syncDataVolumeStatusPhaseWithEvent(syncState, phase, pvc, event)
}
func (r *CloneReconcilerBase) setEventForPhase(dataVolume *cdiv1.DataVolume, phase cdiv1.DataVolumePhase, event *Event) {
sourceType, sourceName, sourceNamespace := cc.GetCloneSourceInfo(dataVolume)
switch phase {
case cdiv1.CloneScheduled:
event.eventType = corev1.EventTypeNormal
event.reason = CloneScheduled
event.message = fmt.Sprintf(MessageCloneScheduled, sourceNamespace, sourceName, dataVolume.Namespace, dataVolume.Name)
case cdiv1.SnapshotForSmartCloneInProgress:
event.eventType = corev1.EventTypeNormal
event.reason = SnapshotForSmartCloneInProgress
event.message = fmt.Sprintf(MessageSmartCloneInProgress, sourceNamespace, sourceName)
case cdiv1.CloneFromSnapshotSourceInProgress:
event.eventType = corev1.EventTypeNormal
event.reason = CloneFromSnapshotSourceInProgress
event.message = fmt.Sprintf(MessageCloneFromSnapshotSourceInProgress, sourceType, sourceNamespace, sourceName)
case cdiv1.CSICloneInProgress:
event.eventType = corev1.EventTypeNormal
event.reason = CSICloneInProgress
event.message = fmt.Sprintf(MessageCsiCloneInProgress, sourceNamespace, sourceName)
case cdiv1.Succeeded:
event.eventType = corev1.EventTypeNormal
event.reason = CloneSucceeded
event.message = fmt.Sprintf(MessageCloneSucceeded, sourceNamespace, sourceName, dataVolume.Namespace, dataVolume.Name)
case cdiv1.CloneInProgress:
event.eventType = corev1.EventTypeNormal
event.reason = CloneInProgress
event.message = fmt.Sprintf(MessageCloneInProgress, sourceNamespace, sourceName, dataVolume.Namespace, dataVolume.Name)
case cdiv1.PrepClaimInProgress:
event.eventType = corev1.EventTypeNormal
event.reason = PrepClaimInProgress
event.message = fmt.Sprintf(MessagePrepClaimInProgress, dataVolume.Namespace, dataVolume.Name)
case cdiv1.RebindInProgress:
event.eventType = corev1.EventTypeNormal
event.reason = RebindInProgress
event.message = fmt.Sprintf(MessageRebindInProgress, dataVolume.Namespace, dataVolume.Name)
default:
r.log.V(3).Info("No event set for phase", "phase", phase)
}
}
var populatorPhaseMap = map[string]cdiv1.DataVolumePhase{
"": cdiv1.CloneScheduled,
clone.PendingPhaseName: cdiv1.CloneScheduled,
clone.SucceededPhaseName: cdiv1.Succeeded,
clone.CSIClonePhaseName: cdiv1.CSICloneInProgress,
clone.HostClonePhaseName: cdiv1.CloneInProgress,
clone.PrepClaimPhaseName: cdiv1.PrepClaimInProgress,
clone.RebindPhaseName: cdiv1.RebindInProgress,
clone.SnapshotClonePhaseName: cdiv1.CloneFromSnapshotSourceInProgress,
clone.SnapshotPhaseName: cdiv1.SnapshotForSmartCloneInProgress,
clone.ErrorPhaseName: cdiv1.Failed,
}
func (r *CloneReconcilerBase) updateStatusPhaseForPopulator(pvc *corev1.PersistentVolumeClaim, dataVolumeCopy *cdiv1.DataVolume, event *Event) error {
popPhase := pvc.Annotations[populators.AnnClonePhase]
dvPhase, ok := populatorPhaseMap[popPhase]
if !ok {
r.log.V(1).Info("Unknown populator phase", "phase", popPhase)
//dataVolumeCopy.Status.Phase = cdiv1.Unknown // hold off on this for now
return nil
}
// Avoid setting DV to failed for consistency with non-populator flow
if dvPhase != cdiv1.Failed {
dataVolumeCopy.Status.Phase = dvPhase
}
r.setEventForPhase(dataVolumeCopy, dvPhase, event)
return nil
}
func (r *CloneReconcilerBase) updateStatusPhase(pvc *corev1.PersistentVolumeClaim, dataVolumeCopy *cdiv1.DataVolume, event *Event) error {
if err := r.populateSourceIfSourceRef(dataVolumeCopy); err != nil {
return err
}
_, sourceName, sourceNamespace := cc.GetCloneSourceInfo(dataVolumeCopy)
usePopulator, err := CheckPVCUsingPopulators(pvc)
if err != nil {
return err
}
if usePopulator {
return r.updateStatusPhaseForPopulator(pvc, dataVolumeCopy, event)
}
phase, ok := pvc.Annotations[cc.AnnPodPhase]
if phase != string(corev1.PodSucceeded) {
_, ok = pvc.Annotations[cc.AnnCloneRequest]
requiresWork, err := r.pvcRequiresWork(pvc, dataVolumeCopy)
if err != nil {
return err
}
if !ok || pvc.Status.Phase != corev1.ClaimBound || !requiresWork {
return nil
}
dataVolumeCopy.Status.Phase = cdiv1.CloneScheduled
}
if !ok {
return nil
}
switch phase {
case string(corev1.PodPending):
dataVolumeCopy.Status.Phase = cdiv1.CloneScheduled
event.eventType = corev1.EventTypeNormal
event.reason = CloneScheduled
event.message = fmt.Sprintf(MessageCloneScheduled, sourceNamespace, sourceName, pvc.Namespace, pvc.Name)
case string(corev1.PodRunning):
dataVolumeCopy.Status.Phase = cdiv1.CloneInProgress
event.eventType = corev1.EventTypeNormal
event.reason = CloneInProgress
event.message = fmt.Sprintf(MessageCloneInProgress, sourceNamespace, sourceName, pvc.Namespace, pvc.Name)
case string(corev1.PodFailed):
event.eventType = corev1.EventTypeWarning
event.reason = CloneFailed
event.message = fmt.Sprintf(MessageCloneFailed, sourceNamespace, sourceName, pvc.Namespace, pvc.Name)
case string(corev1.PodSucceeded):
dataVolumeCopy.Status.Phase = cdiv1.Succeeded
dataVolumeCopy.Status.Progress = cdiv1.DataVolumeProgress("100.0%")
event.eventType = corev1.EventTypeNormal
event.reason = CloneSucceeded
event.message = fmt.Sprintf(MessageCloneSucceeded, sourceNamespace, sourceName, pvc.Namespace, pvc.Name)
}
return nil
}
// If SourceRef is set, populate spec.Source with data from the DataSource
// Note that when the controller actually updates the DV (updateDataVolume), we nil out spec.Source when SourceRef is set
func (r *CloneReconcilerBase) populateSourceIfSourceRef(dv *cdiv1.DataVolume) error {
if dv.Spec.SourceRef == nil {
return nil
}
if dv.Spec.SourceRef.Kind != cdiv1.DataVolumeDataSource {
return errors.Errorf("Unsupported sourceRef kind %s, currently only %s is supported", dv.Spec.SourceRef.Kind, cdiv1.DataVolumeDataSource)
}
ns := dv.Namespace
if dv.Spec.SourceRef.Namespace != nil && *dv.Spec.SourceRef.Namespace != "" {
ns = *dv.Spec.SourceRef.Namespace
}
dataSource := &cdiv1.DataSource{}
if err := r.client.Get(context.TODO(), types.NamespacedName{Name: dv.Spec.SourceRef.Name, Namespace: ns}, dataSource); err != nil {
return err
}
if dataSource.Spec.Source.PVC == nil && dataSource.Spec.Source.Snapshot == nil {
return errors.Errorf("Empty source field in '%s'. DataSource may not be ready yet", dataSource.Name)
}
dv.Spec.Source = &cdiv1.DataVolumeSource{
PVC: dataSource.Spec.Source.PVC,
Snapshot: dataSource.Spec.Source.Snapshot,
}
return nil
}
func isCrossNamespaceClone(dv *cdiv1.DataVolume) bool {
_, _, sourceNamespace := cc.GetCloneSourceInfo(dv)
return sourceNamespace != "" && sourceNamespace != dv.Namespace
}
// addCloneWithoutSourceWatch reconciles clones created without source once the matching PVC is created
func addCloneWithoutSourceWatch(mgr manager.Manager, datavolumeController controller.Controller, typeToWatch client.Object, indexingKey string, op dataVolumeOp) error {
getKey := func(namespace, name string) string {
return namespace + "/" + name
}
if err := mgr.GetFieldIndexer().IndexField(context.TODO(), &cdiv1.DataVolume{}, indexingKey, func(obj client.Object) []string {
dv := obj.(*cdiv1.DataVolume)
if source := dv.Spec.Source; source != nil {
_, sourceName, sourceNamespace := cc.GetCloneSourceInfo(dv)
if getDataVolumeOp(context.TODO(), mgr.GetLogger(), dv, mgr.GetClient()) == op && sourceName != "" {
ns := cc.GetNamespace(sourceNamespace, obj.GetNamespace())
return []string{getKey(ns, sourceName)}
}
}
return nil
}); err != nil {
return err
}
// Function to reconcile DVs that match the selected fields
dataVolumeMapper := func(ctx context.Context, obj client.Object) []reconcile.Request {
dvList := &cdiv1.DataVolumeList{}
namespacedName := types.NamespacedName{Namespace: obj.GetNamespace(), Name: obj.GetName()}
matchingFields := client.MatchingFields{indexingKey: namespacedName.String()}
if err := mgr.GetClient().List(ctx, dvList, matchingFields); err != nil {
return nil
}
var reqs []reconcile.Request
for _, dv := range dvList.Items {
reqs = append(reqs, reconcile.Request{NamespacedName: types.NamespacedName{Namespace: dv.Namespace, Name: dv.Name}})
}
return reqs
}
if err := datavolumeController.Watch(source.Kind(mgr.GetCache(), typeToWatch,
handler.EnqueueRequestsFromMapFunc(dataVolumeMapper),
predicate.Funcs{
CreateFunc: func(e event.CreateEvent) bool { return true },
DeleteFunc: func(e event.DeleteEvent) bool { return false },
UpdateFunc: func(e event.UpdateEvent) bool { return true },
})); err != nil {
return err
}
return nil
}