func (c *Context) PullTUF(url string, client *tuf.Client, progress chan<- layer.PullInfo) error {
ref, err := registry.NewRef(url)
if err != nil {
return err
}
return c.pull(url, registry.NewTUFSession(client, ref), progress)
}
func (c *Context) PullDocker(url string, progress chan<- layer.PullInfo) error {
ref, err := registry.NewRef(url)
if err != nil {
return err
}
return c.pull(url, registry.NewDockerSession(ref), progress)
}
func (c *Context) Pull(url string, progress chan<- LayerPullInfo) error {
defer func() {
if progress != nil {
close(progress)
}
}()
ref, err := registry.NewRef(url)
if err != nil {
return err
}
if id := ref.ImageID(); id != "" && c.Exists(id) {
if progress != nil {
progress <- LayerPullInfo{ID: id, Status: LayerStatusExists}
}
return nil
}
image, err := ref.Get()
if err != nil {
return err
}
layers, err := image.Ancestors()
if err != nil {
return err
}
for i := len(layers) - 1; i >= 0; i-- {
layer := layers[i]
if c.Exists(layer.ID) {
if progress != nil {
progress <- LayerPullInfo{ID: layer.ID, Status: LayerStatusExists}
}
continue
}
if err := layer.Fetch(); err != nil {
return err
}
status := LayerStatusDownloaded
if err := c.Add(layer); err != nil {
if err == store.ErrExists {
status = LayerStatusExists
} else {
return err
}
}
if progress != nil {
progress <- LayerPullInfo{ID: layer.ID, Status: status}
}
}
// TODO: update sizes
return nil
}
func (c *Context) Pull(url string) {
ref, err := registry.NewRef(url)
if err != nil {
log.Fatal(err)
}
if id := ref.ImageID(); id != "" && c.Exists(id) {
c.writeLayerInfo(id, "exists")
return
}
image, err := ref.Get()
if err != nil {
log.Fatal(err)
}
layers, err := image.Ancestors()
if err != nil {
log.Fatal(err)
}
for i := len(layers) - 1; i >= 0; i-- {
layer := layers[i]
if c.Exists(layer.ID) {
c.writeLayerInfo(layer.ID, "exists")
continue
}
if err := layer.Fetch(); err != nil {
log.Fatal(err)
}
status := "downloaded"
if err := c.Add(layer); err != nil {
if err == store.ErrExists {
status = "exists"
} else {
log.Fatal(err)
}
}
c.writeLayerInfo(layer.ID, status)
}
// TODO: update sizes
}