func (p *v2Pusher) pushV2Layer(bs distribution.BlobService, l layer.Layer) (digest.Digest, error) {
out := p.config.OutStream
displayID := stringid.TruncateID(string(l.DiffID()))
out.Write(p.sf.FormatProgress(displayID, "Preparing", nil))
arch, err := l.TarStream()
if err != nil {
return "", err
}
// Send the layer
layerUpload, err := bs.Create(context.Background())
if err != nil {
return "", err
}
defer layerUpload.Close()
// don't care if this fails; best effort
size, _ := l.DiffSize()
reader := progressreader.New(progressreader.Config{
In: ioutil.NopCloser(arch), // we'll take care of close here.
Out: out,
Formatter: p.sf,
Size: size,
NewLines: false,
ID: displayID,
Action: "Pushing",
})
compressedReader := compress(reader)
digester := digest.Canonical.New()
tee := io.TeeReader(compressedReader, digester.Hash())
out.Write(p.sf.FormatProgress(displayID, "Pushing", nil))
nn, err := layerUpload.ReadFrom(tee)
compressedReader.Close()
if err != nil {
return "", err
}
dgst := digester.Digest()
if _, err := layerUpload.Commit(context.Background(), distribution.Descriptor{Digest: dgst}); err != nil {
return "", err
}
logrus.Debugf("uploaded layer %s (%s), %d bytes", l.DiffID(), dgst, nn)
out.Write(p.sf.FormatProgress(displayID, "Pushed", nil))
return dgst, nil
}
