rbd: add the VolumeGroup type

Signed-off-by: Niels de Vos <ndevos@ibm.com>

internal/rbd/types/group.go

@@ -0,0 +1,48 @@
+/*
+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"
+
+	"github.com/csi-addons/spec/lib/go/volumegroup"
+)
+
+// VolumeGroup contains a number of volumes, and can be used to create a
+// VolumeGroupSnapshot.
+type VolumeGroup interface {
+	// Destroy frees the resources used by the VolumeGroup.
+	Destroy(ctx context.Context)
+
+	// GetID returns the CSI-Addons VolumeGroupId of the VolumeGroup.
+	GetID(ctx context.Context) (string, error)
+
+	// ToCSI creates a CSI-Addons type for the VolumeGroup.
+	ToCSI(ctx context.Context) *volumegroup.VolumeGroup
+
+	// Delete removes the VolumeGroup from the backend storage.
+	Delete(ctx context.Context) error
+
+	// AddVolume adds the Volume to the VolumeGroup.
+	AddVolume(ctx context.Context, volume Volume) error
+
+	// RemoveVolume removes the Volume from the VolumeGroup.
+	RemoveVolume(ctx context.Context, volume Volume) error
+
+	// ListVolumes returns a slice with all Volumes in the VolumeGroup.
+	ListVolumes(ctx context.Context) ([]Volume, error)
+}