Esempio n. 1
0
// BuildImage builds a docker image using a directory that contains a Dockerfile
func (d *ImageManager) BuildImage(dockerfileDirPath, name string, stdoutWriter io.WriteCloser) error {

	bio := dockerclient.BuildImageOptions{
		Name:         name,
		NoCache:      true,
		ContextDir:   filepath.Dir(dockerfileDirPath),
		OutputStream: stdoutWriter,
	}

	for _, envVar := range []string{"http_proxy", "https_proxy", "no_proxy"} {
		for _, name := range []string{strings.ToLower(envVar), strings.ToUpper(envVar)} {
			if val, ok := os.LookupEnv(name); ok {
				bio.BuildArgs = append(bio.BuildArgs, dockerclient.BuildArg{
					Name:  name,
					Value: val,
				})
			}
		}
	}

	if stdoutWriter != nil {
		defer func() {
			stdoutWriter.Close()
		}()
	}

	if err := d.client.BuildImage(bio); err != nil {
		return err
	}

	return nil
}
Esempio n. 2
0
// BuildImageFromCallback builds a docker image by letting a callback popuplate
// a tar.Writer; the callback must write a Dockerfile into the tar stream (as
// well as any additional build context).  If stdoutWriter implements io.Closer,
// it will be closed when done.
func (d *ImageManager) BuildImageFromCallback(name string, stdoutWriter io.Writer, callback func(*tar.Writer) error) error {
	pipeReader, pipeWriter, err := os.Pipe()
	if err != nil {
		return err
	}

	bio := dockerclient.BuildImageOptions{
		Name:         name,
		NoCache:      true,
		InputStream:  pipeReader,
		OutputStream: stdoutWriter,
	}

	for _, envVar := range []string{"http_proxy", "https_proxy", "no_proxy"} {
		for _, name := range []string{strings.ToLower(envVar), strings.ToUpper(envVar)} {
			if val, ok := os.LookupEnv(name); ok {
				bio.BuildArgs = append(bio.BuildArgs, dockerclient.BuildArg{
					Name:  name,
					Value: val,
				})
			}
		}
	}

	if stdoutCloser, ok := stdoutWriter.(io.Closer); ok {
		defer func() {
			stdoutCloser.Close()
		}()
	}

	writerErrorChan := make(chan error, 1)
	go func() {
		defer close(writerErrorChan)
		defer pipeWriter.Close()
		tarWriter := tar.NewWriter(pipeWriter)
		var err error
		if err = callback(tarWriter); err == nil {
			err = tarWriter.Close()
		}
		writerErrorChan <- err
	}()

	err = d.client.BuildImage(bio)

	// Prefer returning the error from the tar writer; that normally
	// has more useful details.
	if writerErr := <-writerErrorChan; writerErr != nil {
		return writerErr
	}

	return err
}