alexlebens/external-snapshotter
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add comments and fix unit test

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This commit is contained in:
Raunak Pradip Shah
2023-12-07 09:20:11 -08:00
parent 875662b365
commit 47e71db17f
2 changed files with 8 additions and 3 deletions
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9
pkg/common-controller/snapshot_controller.go
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@@ -311,7 +311,6 @@ func (ctrl *csiSnapshotCommonController) checkandRemoveSnapshotFinalizersAndChec
removeGroupFinalizer := false
// Block deletion if this snapshot belongs to a group snapshot.
if snapshot.Status != nil && snapshot.Status.VolumeGroupSnapshotName != nil {
removeGroupFinalizer = true
groupSnapshot, err := ctrl.groupSnapshotLister.VolumeGroupSnapshots(snapshot.Namespace).Get(*snapshot.Status.VolumeGroupSnapshotName)
if err == nil {
msg := fmt.Sprintf("deletion of the individual volume snapshot %s is not allowed as it belongs to group snapshot %s. Deleting the group snapshot will trigger the deletion of all the individual volume snapshots that are part of the group.", utils.SnapshotKey(snapshot), utils.GroupSnapshotKey(groupSnapshot))
@@ -323,6 +322,10 @@ func (ctrl *csiSnapshotCommonController) checkandRemoveSnapshotFinalizersAndChec
klog.Errorf("failed to delete snapshot %s: %v", utils.SnapshotKey(snapshot), err)
return err
}
// group snapshot API object was deleted.
// The VolumeSnapshotInGroupFinalizer can be removed from this snapshot
// to trigger deletion.
removeGroupFinalizer = true
}
// regardless of the deletion policy, set the VolumeSnapshotBeingDeleted on
@@ -351,7 +354,7 @@ func (ctrl *csiSnapshotCommonController) checkandRemoveSnapshotFinalizersAndChec
}
klog.V(5).Infof("checkandRemoveSnapshotFinalizersAndCheckandDeleteContent: Remove Finalizer for VolumeSnapshot[%s]", utils.SnapshotKey(snapshot))
// remove finalizers on the VolumeSnapshot object, there are two finalizers:
// remove finalizers on the VolumeSnapshot object, there are three finalizers:
// 1. VolumeSnapshotAsSourceFinalizer, once reached here, the snapshot is not
// in use to restore PVC, and the finalizer will be removed directly.
// 2. VolumeSnapshotBoundFinalizer:
@@ -361,6 +364,8 @@ func (ctrl *csiSnapshotCommonController) checkandRemoveSnapshotFinalizersAndChec
// by snapshot sidecar controller.
// c. If deletion will not cascade to the content, remove the finalizer on
// the snapshot such that it can be removed from API server.
// 3. VolumeSnapshotInGroupFinalizer, if the snapshot was part of a group snapshot,
// then the group snapshot has been deleted, so remove the finalizer.
removeBoundFinalizer := !(content != nil && deleteContent)
return ctrl.removeSnapshotFinalizer(snapshot, true, removeBoundFinalizer, removeGroupFinalizer)
}