// Given an image app name and optional labels, get the best matching image
// available in the store, build its dependency list and render it inside dir
func RenderACI(name types.ACIdentifier, labels types.Labels, dir string, ap acirenderer.ACIRegistry, uidRange *user.UidRange) error {
renderedACI, err := acirenderer.GetRenderedACI(name, labels, ap)
if err != nil {
return err
}
return renderImage(renderedACI, dir, ap, uidRange)
}
// FetchAndRender will fetch the given image and all of its dependencies if
// they have not been fetched yet, and will then render them on to the
// filesystem if they have not been rendered yet.
func (r Registry) FetchAndRender(imagename types.ACIdentifier, labels types.Labels, size uint) error {
err := r.Fetch(imagename, labels, size, true)
if err != nil {
return err
}
filesToRender, err := acirenderer.GetRenderedACI(imagename,
labels, r)
if err != nil {
return err
}
filesloop:
for _, fs := range filesToRender {
_, err := os.Stat(path.Join(r.DepStoreExpandedPath, fs.Key, "rendered"))
switch {
case os.IsNotExist(err):
break
case err != nil:
return err
default:
// This ACI has already been rendered
continue filesloop
}
err = util.ExtractImage(path.Join(r.DepStoreTarPath, fs.Key),
path.Join(r.DepStoreExpandedPath, fs.Key), fs.FileMap)
if err != nil {
return err
}
rfile, err := os.Create(
path.Join(r.DepStoreExpandedPath, fs.Key, "rendered"))
if err != nil {
return err
}
rfile.Close()
}
return nil
}