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cleanup: split repairExistingVolume() from CreateVolume()

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Move the repairing of a volume/snapshot from CreateVolume to its own
function. This reduces the complexity of the code, and makes the
procedure easier to understand. Further enhancements to repairing an
exsiting volume can be done in the new function.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
(cherry picked from commit 96a8ea3e88)
This commit is contained in:
Niels de Vos 2021-05-26 10:33:14 +02:00 committed by mergify[bot]
parent a884b99c6e
commit 58d606ab8d
1 changed files with 23 additions and 17 deletions
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40
internal/rbd/controllerserver.go
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@ -257,23 +257,8 @@ func (cs *ControllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
found, err := rbdVol.Exists(ctx, parentVol)
if err != nil {
return nil, getGRPCErrorForCreateVolume(err)
}
if found {
if rbdSnap != nil {
// check if image depth is reached limit and requires flatten
err = checkFlatten(ctx, rbdVol, cr)
if err != nil {
return nil, err
}
err = rbdSnap.repairEncryptionConfig(&rbdVol.rbdImage)
if err != nil {
return nil, err
}
}
return buildCreateVolumeResponse(req, rbdVol), nil
} else if found {
return cs.repairExistingVolume(ctx, req, cr, rbdVol, rbdSnap)
}
err = validateRequestedVolumeSize(rbdVol, parentVol, rbdSnap, cr)
@ -332,6 +317,27 @@ func flattenParentImage(ctx context.Context, rbdVol *rbdVolume, cr *util.Credent
return nil
}
// repairExistingVolume checks the existing volume or snapshot and makes sure
// that the state is corrected to what was requested. It is needed to call this
// when the process of creating a volume was interrupted.
func (cs *ControllerServer) repairExistingVolume(ctx context.Context, req *csi.CreateVolumeRequest,
cr *util.Credentials, rbdVol *rbdVolume, rbdSnap *rbdSnapshot) (*csi.CreateVolumeResponse, error) {
if rbdSnap != nil {
// check if image depth is reached limit and requires flatten
err := checkFlatten(ctx, rbdVol, cr)
if err != nil {
return nil, err
}
err = rbdSnap.repairEncryptionConfig(&rbdVol.rbdImage)
if err != nil {
return nil, err
}
}
return buildCreateVolumeResponse(req, rbdVol), nil
}
// check snapshots on the rbd image, as we have limit from krbd that an image
// cannot have more than 510 snapshot at a given point of time. If the
// snapshots are more than the `maxSnapshotsOnImage` Add a task to flatten all