feat(instance_server): allow root_volume size update (#2745)

* feat(instance_server): allow root_volume size update

* add tests

* record new test

internal/services/instance/helpers_instance_block.go

@@ -22,6 +22,12 @@ type GetUnknownVolumeRequest struct {
 	Zone     scw.Zone
 }
 
+type ResizeUnknownVolumeRequest struct {
+	VolumeID string
+	Zone     scw.Zone
+	Size     *scw.Size
+}
+
 type UnknownVolume struct {
 	Zone     scw.Zone
 	ID       string
@@ -129,6 +135,32 @@ func (api *BlockAndInstanceAPI) GetUnknownVolume(req *GetUnknownVolumeRequest, o
 	return vol, nil
 }
 
+func (api *BlockAndInstanceAPI) ResizeUnknownVolume(req *ResizeUnknownVolumeRequest, opts ...scw.RequestOption) error {
+	unknownVolume, err := api.GetUnknownVolume(&GetUnknownVolumeRequest{
+		VolumeID: req.VolumeID,
+		Zone:     req.Zone,
+	}, opts...)
+	if err != nil {
+		return err
+	}
+
+	if unknownVolume.IsBlockVolume() {
+		_, err = api.blockAPI.UpdateVolume(&block.UpdateVolumeRequest{
+			Zone:     req.Zone,
+			VolumeID: req.VolumeID,
+			Size:     req.Size,
+		}, opts...)
+	} else {
+		_, err = api.API.UpdateVolume(&instance.UpdateVolumeRequest{
+			Zone:     req.Zone,
+			VolumeID: req.VolumeID,
+			Size:     req.Size,
+		}, opts...)
+	}
+
+	return err
+}
+
 // newAPIWithZone returns a new instance API and the zone for a Create request
 func instanceAndBlockAPIWithZone(d *schema.ResourceData, m interface{}) (*BlockAndInstanceAPI, scw.Zone, error) {
 	instanceAPI := instance.NewAPI(meta.ExtractScwClient(m))

internal/services/instance/server.go

@@ -817,7 +817,7 @@ func ResourceInstanceServerUpdate(ctx context.Context, d *schema.ResourceData, m
 	}
 
 	if d.HasChanges("additional_volume_ids", "root_volume") {
-		volumes, err := instanceServerVolumesTemplatesUpdate(ctx, d, api, zone, isStopped)
+		volumes, err := instanceServerVolumesUpdate(ctx, d, api, zone, isStopped)
 		if err != nil {
 			return diag.FromErr(err)
 		}
@@ -1396,12 +1396,23 @@ func ResourceInstanceServerUpdateRootVolumeIOPS(ctx context.Context, api *BlockA
 	return nil
 }
 
-// instanceServerVolumesTemplatesUpdate returns the list of volumes templates that should be updated for the server.
+// instanceServerVolumesUpdate updates root_volume size and returns the list of volumes templates that should be updated for the server.
 // It uses root_volume and additional_volume_ids to build the volumes templates.
-func instanceServerVolumesTemplatesUpdate(ctx context.Context, d *schema.ResourceData, api *BlockAndInstanceAPI, zone scw.Zone, serverIsStopped bool) (map[string]*instanceSDK.VolumeServerTemplate, error) {
+func instanceServerVolumesUpdate(ctx context.Context, d *schema.ResourceData, api *BlockAndInstanceAPI, zone scw.Zone, serverIsStopped bool) (map[string]*instanceSDK.VolumeServerTemplate, error) {
 	volumes := map[string]*instanceSDK.VolumeServerTemplate{}
 	raw, hasAdditionalVolumes := d.GetOk("additional_volume_ids")
 
+	if d.HasChange("root_volume.0.size_in_gb") {
+		err := api.ResizeUnknownVolume(&ResizeUnknownVolumeRequest{
+			VolumeID: zonal.ExpandID(d.Get("root_volume.0.volume_id")).ID,
+			Zone:     zone,
+			Size:     scw.SizePtr(scw.Size(d.Get("root_volume.0.size_in_gb").(int)) * scw.GB),
+		}, scw.WithContext(ctx))
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	volumes["0"] = &instanceSDK.VolumeServerTemplate{
 		ID:   scw.StringPtr(zonal.ExpandID(d.Get("root_volume.0.volume_id")).ID),
 		Name: scw.StringPtr(types.NewRandomName("vol")), // name is ignored by the API, any name will work here

internal/services/instance/server_test.go

@@ -170,6 +170,24 @@ func TestAccServer_RootVolume1(t *testing.T) {
 				Check: resource.ComposeTestCheckFunc(
 					isServerPresent(tt, "scaleway_instance_server.base"),
 					serverHasNewVolume(tt, "scaleway_instance_server.base"),
+					resource.TestCheckResourceAttr("scaleway_instance_server.base", "root_volume.0.size_in_gb", "10"),
+				),
+			},
+			{
+				Config: `
+					resource "scaleway_instance_server" "base" {
+						image = "ubuntu_focal"
+						type  = "DEV1-S"
+						root_volume {
+							size_in_gb = 20
+							delete_on_termination = true
+						}
+						tags = [ "terraform-test", "scaleway_instance_server", "root_volume" ]
+					}`,
+				Check: resource.ComposeTestCheckFunc(
+					isServerPresent(tt, "scaleway_instance_server.base"),
+					serverHasNewVolume(tt, "scaleway_instance_server.base"),
+					resource.TestCheckResourceAttr("scaleway_instance_server.base", "root_volume.0.size_in_gb", "20"),
 				),
 			},
 		},
@@ -2008,6 +2026,26 @@ func TestAccServer_BlockExternalRootVolume(t *testing.T) {
 					resource.TestCheckResourceAttr("scaleway_instance_server.main", "root_volume.0.size_in_gb", "50"),
 				),
 			},
+			{
+				Config: `
+					resource "scaleway_instance_server" "main" {
+						name = "tf-tests-instance-block-external-root-volume"
+						image = "ubuntu_jammy"
+						type  = "PLAY2-PICO"
+						root_volume {
+							volume_type = "sbs_volume"
+							size_in_gb = 60
+							sbs_iops = 15000
+						}
+					}`,
+				Check: resource.ComposeTestCheckFunc(
+					resource.TestCheckResourceAttr("scaleway_instance_server.main", "type", "PLAY2-PICO"),
+					resource.TestCheckResourceAttr("scaleway_instance_server.main", "additional_volume_ids.#", "0"),
+					resource.TestCheckResourceAttr("scaleway_instance_server.main", "root_volume.0.volume_type", string(instanceSDK.VolumeVolumeTypeSbsVolume)),
+					resource.TestCheckResourceAttr("scaleway_instance_server.main", "root_volume.0.sbs_iops", "15000"),
+					resource.TestCheckResourceAttr("scaleway_instance_server.main", "root_volume.0.size_in_gb", "60"),
+				),
+			},
 		},
 	})
 }