func pushLayer(ctx context.Context, address, imageDir string,
blobs distribution.BlobStore) (descriptor distribution.Descriptor, err error) {
fmt.Printf("push layer: %s", address)
layer, err := os.Open(filepath.Join(imageDir, address, "layer.tar"))
if err != nil {
log.Printf("Error reading embedded tar: %v", err)
return
}
defer layer.Close()
stat, err := layer.Stat()
digester := digest.Canonical.New()
bar := pb.New(int(stat.Size())).SetUnits(pb.U_BYTES)
bar.Start()
writer, err := blobs.Create(ctx)
if err != nil {
log.Printf("Error creating blob writer: %v", err)
return
}
_, err = io.Copy(io.MultiWriter(writer, bar, digester.Hash()), layer)
if err != nil {
log.Printf("Error copying to blob writer: %v", err)
return
}
descriptor, err = writer.Commit(ctx, distribution.Descriptor{
Digest: digester.Digest(),
})
if err != nil {
log.Printf("Error commiting blob writer: %v", err)
return
}
bar.Finish()
return
}
