Add Image Sizes (#88)

When selecting an image based on metadata we need to raise an error, or
select a version that will actual fit on the selected flavor, or limit
flavor selection to those that will work with the image.  Or vice versa!

charts/region/Chart.yaml

@@ -4,8 +4,8 @@ description: A Helm chart for deploying Unikorn's Region Controller
 
 type: application
 
-version: v0.1.47-rc3
-appVersion: v0.1.47-rc3
+version: v0.1.47-rc4
+appVersion: v0.1.47-rc4
 
 icon: https://raw.githubusercontent.com/unikorn-cloud/assets/main/images/logos/dark-on-light/icon.png
 

pkg/handler/handler.go

@@ -288,6 +288,7 @@ func convertImage(in providers.Image) openapi.Image {
 			CreationTime: in.Created,
 		},
 		Spec: openapi.ImageSpec{
+			SizeGiB:        in.SizeGiB,
 			Virtualization: convertImageVirtualization(in.Virtualization),
 			Os: openapi.ImageOS{
 				Kernel:   convertOsKernel(in.OS.Kernel),

pkg/openapi/server.spec.yaml

@@ -775,9 +775,13 @@ components:
       description: An image.
       type: object
       required:
+      - sizeGiB
       - virtualization
       - os
       properties:
+        sizeGiB:
+          description: Minimum disk size required to use the image in GiB.
+          type: integer
         virtualization:
           $ref: '#/components/schemas/imageVirtualization'
         os:
@@ -1480,6 +1484,7 @@ components:
               name: ubu2204-v1.25.6-gpu-525.85.05-7ced4154
               creationTime: 2023-02-22T12:04:13Z
             spec:
+              sizeGiB: 10
               virtualization: virtualized
               os:
                 kernel: linux

pkg/providers/openstack/provider.go

@@ -363,11 +363,19 @@ func (p *Provider) Images(ctx context.Context) (providers.ImageList, error) {
 
 		virtualization, _ := image.Properties["unikorn:virtualization"].(string)
 
+		size := image.MinDiskGigabytes
+
+		if size == 0 {
+			// Round up to the nearest GiB.
+			size = int((image.VirtualSize + (1 << 30) - 1) >> 30)
+		}
+
 		providerImage := providers.Image{
 			ID:             image.ID,
 			Name:           image.Name,
 			Created:        image.CreatedAt,
 			Modified:       image.UpdatedAt,
+			SizeGiB:        size,
 			Virtualization: providers.ImageVirtualization(virtualization),
 			OS:             p.imageOS(image),
 			Packages:       p.imagePackages(image),

pkg/providers/types.go

@@ -90,6 +90,8 @@ type Image struct {
 	Created time.Time
 	// Modified is when the image was modified.
 	Modified time.Time
+	// SizeGiB is the minumum disk size for the image in GiB.
+	SizeGiB int
 	// ImageVirtualization defines how the image can be used.
 	Virtualization ImageVirtualization
 	// GPU is any GPU specific configuration for scheduling on a specific flavor type.