func (builder *Builder) pushImage(image imagename.ImageName) (digest string, err error) {
var (
pipeReader, pipeWriter = io.Pipe()
errch = make(chan error)
buf bytes.Buffer
outStream = io.MultiWriter(pipeWriter, &buf)
)
go func() {
err := builder.Docker.PushImage(docker.PushImageOptions{
Name: image.NameWithRegistry(),
Tag: image.GetTag(),
Registry: image.Registry,
OutputStream: outStream,
RawJSONStream: true,
}, *builder.Auth)
if err := pipeWriter.Close(); err != nil {
fmt.Fprintf(builder.OutStream, "pipeWriter.Close() err: %s\n", err)
}
errch <- err
}()
if err := jsonmessage.DisplayJSONMessagesStream(pipeReader, builder.OutStream, builder.fdOut, builder.isTerminalOut); err != nil {
return "", fmt.Errorf("Failed to process json stream for image: %s, error: %s", image, err)
}
if err := <-errch; err != nil {
return "", fmt.Errorf("Failed to push image: %s, error: %s", image, err)
}
// It is the best way to have pushed image digest so far
matches := captureDigest.FindStringSubmatch(buf.String())
if len(matches) > 0 {
digest = matches[1]
}
return digest, nil
}
