From 76654c8fcee878a568886e969c1064d6903dd3b4 Mon Sep 17 00:00:00 2001
From: Niels de Vos <ndevos@ibm.com>
Date: Tue, 1 Oct 2024 10:27:03 +0200
Subject: [PATCH 1/2] rbd: use `GetCreationTime()` to build the CSI-Snapshot
 object

Signed-off-by: Niels de Vos <ndevos@ibm.com>
---
 internal/rbd/rbd_util.go | 4 ++++
 internal/rbd/snapshot.go | 7 ++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/internal/rbd/rbd_util.go b/internal/rbd/rbd_util.go
index 3b72b7c4c86..d623327a837 100644
--- a/internal/rbd/rbd_util.go
+++ b/internal/rbd/rbd_util.go
@@ -1641,6 +1641,10 @@ func (ri *rbdImage) GetCreationTime(ctx context.Context) (*time.Time, error) {
 		return nil, err
 	}
 
+	if ri.CreatedAt == nil {
+		return nil, fmt.Errorf("failed to get creation time for image %q", ri)
+	}
+
 	return ri.CreatedAt, nil
 }
 
diff --git a/internal/rbd/snapshot.go b/internal/rbd/snapshot.go
index d0234e8ca58..e903a74f3aa 100644
--- a/internal/rbd/snapshot.go
+++ b/internal/rbd/snapshot.go
@@ -145,11 +145,16 @@ func (rbdSnap *rbdSnapshot) toVolume() *rbdVolume {
 }
 
 func (rbdSnap *rbdSnapshot) ToCSI(ctx context.Context) (*csi.Snapshot, error) {
+	created, err := rbdSnap.GetCreationTime(ctx)
+	if err != nil {
+		return nil, err
+	}
+
 	return &csi.Snapshot{
 		SizeBytes:      rbdSnap.VolSize,
 		SnapshotId:     rbdSnap.VolID,
 		SourceVolumeId: rbdSnap.SourceVolumeID,
-		CreationTime:   timestamppb.New(*rbdSnap.CreatedAt),
+		CreationTime:   timestamppb.New(*created),
 		ReadyToUse:     true,
 	}, nil
 }

From 3fb53c1e340ce3bdb5bb7ef1bc2b5473cd5d66f1 Mon Sep 17 00:00:00 2001
From: Niels de Vos <ndevos@ibm.com>
Date: Fri, 4 Oct 2024 12:20:04 +0200
Subject: [PATCH 2/2] rbd: add types.Snapshot interface

The rbdSnapshot/rbdImage object implements all functions for a useful
Snapshot interface. The rbd.Manager will be able to use this for
providing VolumeGroupSnapshot support.

Signed-off-by: Niels de Vos <ndevos@ibm.com>
---
 internal/rbd/types/snapshot.go | 38 ++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 internal/rbd/types/snapshot.go

diff --git a/internal/rbd/types/snapshot.go b/internal/rbd/types/snapshot.go
new file mode 100644
index 00000000000..90e4ef13e79
--- /dev/null
+++ b/internal/rbd/types/snapshot.go
@@ -0,0 +1,38 @@
+/*
+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 types
+
+import (
+	"context"
+	"time"
+
+	"github.com/container-storage-interface/spec/lib/go/csi"
+)
+
+type Snapshot interface {
+	journalledObject
+
+	// Destroy frees the resources used by the Snapshot.
+	Destroy(ctx context.Context)
+
+	// Delete removes the snapshot from the storage backend.
+	Delete(ctx context.Context) error
+
+	ToCSI(ctx context.Context) (*csi.Snapshot, error)
+
+	GetCreationTime(ctx context.Context) (*time.Time, error)
+}