Work around no base images

Signed-off-by: Christian Dupuis <cd@atomist.com>

Author: cdupuis

commands/cmd.go

@@ -138,7 +138,9 @@ func NewRootCmd(name string, isPlugin bool, dockerCli command.Cli) *cobra.Comman
 				if err != nil {
 					return err
 				}
-				sb.Source.BaseImages = bi.ImagesByDiffIds
+				if bi != nil && len(bi.ImagesByDiffIds) > 0 {
+					sb.Source.BaseImages = bi.ImagesByDiffIds
+				}
 			}
 
 			js, err := json.MarshalIndent(sb, "", "  ")

query/base.go

@@ -227,6 +227,10 @@ func ForBaseImageInGraphQL(cfg *v1.ConfigFile, excludeSelf bool) (*types.BaseIma
 		diffIds = diffIds[0 : len(diffIds)-1]
 	}
 
+	if len(diffIds) == 0 {
+		return nil, nil
+	}
+
 	url := "https://api.dso.docker.com/v1/graphql"
 	client := graphql.NewClient(url, nil)
 	variables := map[string]interface{}{

registry/save.go

@@ -81,6 +81,8 @@ func (c *ImageCache) StoreImage() error {
 	skill.Log.Debugf("Copying image to %s", c.ImagePath)
 
 	if format := os.Getenv("ATOMIST_CACHE_FORMAT"); format == "" || format == "oci" {
+		spinner := internal.StartSpinner("info", "Copying image", c.cli.Out().IsTerminal())
+		defer spinner.Stop()
 		p, err := layout.FromPath(c.ImagePath)
 		if err != nil {
 			p, err = layout.Write(c.ImagePath, empty.Index)
@@ -91,6 +93,7 @@ func (c *ImageCache) StoreImage() error {
 		if err = p.AppendImage(*c.Image); err != nil {
 			return err
 		}
+		spinner.Stop()
 		skill.Log.Infof("Copied image")
 		return nil
 	} else if format == "tar" {
@@ -140,14 +143,15 @@ func (c *ImageCache) Cleanup() {
 	if !c.copy {
 		return
 	}
-	e := os.Remove(c.ImagePath)
+	e := os.RemoveAll(c.ImagePath)
 	if e != nil {
-		skill.Log.Warnf("Failed to delete tmp image archive %s", c.ImagePath)
+		skill.Log.Warnf("Failed to delete tmp image archive %s: %v", c.ImagePath, e)
 	}
 }
 
 // SaveImage stores the v1.Image at path returned in OCI format
 func SaveImage(image string, cli command.Cli) (*ImageCache, error) {
+	skill.Log.Infof("Requesting image %s", image)
 	ref, err := name.ParseReference(image)
 	if err != nil {
 		return nil, errors.Wrapf(err, "failed to parse reference: %s", image)