store: add image size to compose

When a use defines the image size for a compose this size is stored in
the compose struct so that the virtual image size can be returned by the
api instead of the file size of the image.

internal/store/store.go

@@ -59,6 +59,7 @@ type Compose struct {
 	JobStarted  time.Time            `json:"job_started"`
 	JobFinished time.Time            `json:"job_finished"`
 	Image       *Image               `json:"image"`
+	Size        uint64               `json:"size"`
 }
 
 // A Job contains the information about a compose a worker needs to process it.
@@ -495,6 +496,7 @@ func (s *Store) PushCompose(composeID uuid.UUID, bp *blueprint.Blueprint, checks
 			OutputType:  composeType,
 			Targets:     targets,
 			JobCreated:  time.Now(),
+			Size:        size,
 		}
 		return nil
 	})

internal/weldr/api.go

@@ -1481,7 +1481,7 @@ func (api *API) composeInfoHandler(writer http.ResponseWriter, request *http.Req
 		Deps        Dependencies         `json:"deps"`      // empty for now
 		ComposeType string               `json:"compose_type"`
 		QueueStatus string               `json:"queue_status"`
-		ImageSize   int64                `json:"image_size"`
+		ImageSize   uint64               `json:"image_size"`
 		Uploads     []UploadResponse     `json:"uploads,omitempty"`
 	}
 
@@ -1493,7 +1493,7 @@ func (api *API) composeInfoHandler(writer http.ResponseWriter, request *http.Req
 	reply.ComposeType = compose.OutputType
 	reply.QueueStatus = compose.QueueStatus
 	if compose.Image != nil {
-		reply.ImageSize = compose.Image.Size
+		reply.ImageSize = compose.Size
 	}
 
 	if isRequestVersionAtLeast(params, 1) {

internal/weldr/compose.go

@@ -12,7 +12,7 @@ type ComposeEntry struct {
 	Blueprint   string           `json:"blueprint"`
 	Version     string           `json:"version"`
 	ComposeType string           `json:"compose_type"`
-	ImageSize   int64            `json:"image_size"`
+	ImageSize   uint64           `json:"image_size"`
 	QueueStatus string           `json:"queue_status"`
 	JobCreated  float64          `json:"job_created"`
 	JobStarted  float64          `json:"job_started,omitempty"`
@@ -43,7 +43,7 @@ func composeToComposeEntry(id uuid.UUID, compose store.Compose, includeUploads b
 
 	case "FINISHED":
 		if compose.Image != nil {
-			composeEntry.ImageSize = compose.Image.Size
+			composeEntry.ImageSize = compose.Size
 		} else {
 			log.Printf("finished compose with id %s has nil image\n", id.String())
 			composeEntry.ImageSize = 0