1 files changed, 97 insertions, 0 deletions
diff --git a/pkg/machine/pull.go b/pkg/machine/pull.go
new file mode 100644
index 000000000..39dde15b8
--- /dev/null
+++ b/pkg/machine/pull.go
@@ -0,0 +1,97 @@
+package machine
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+
+	"github.com/sirupsen/logrus"
+	"github.com/vbauerster/mpb/v6"
+	"github.com/vbauerster/mpb/v6/decor"
+)
+
+// DownloadVMImage downloads a VM image from url to given path
+// with download status
+func DownloadVMImage(downloadURL fmt.Stringer, localImagePath string) error {
+	out, err := os.Create(localImagePath)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err := out.Close(); err != nil {
+			logrus.Error(err)
+		}
+	}()
+
+	resp, err := http.Get(downloadURL.String())
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err := resp.Body.Close(); err != nil {
+			logrus.Error(err)
+		}
+	}()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("error downloading VM image: %s", resp.Status)
+	}
+	size := resp.ContentLength
+	urlSplit := strings.Split(downloadURL.String(), "/")
+	prefix := "Downloading VM image: " + urlSplit[len(urlSplit)-1]
+	onComplete := prefix + ": done"
+
+	p := mpb.New(
+		mpb.WithWidth(60),
+		mpb.WithRefreshRate(180*time.Millisecond),
+	)
+
+	bar := p.AddBar(size,
+		mpb.BarFillerClearOnComplete(),
+		mpb.PrependDecorators(
+			decor.OnComplete(decor.Name(prefix), onComplete),
+		),
+		mpb.AppendDecorators(
+			decor.OnComplete(decor.CountersKibiByte("%.1f / %.1f"), ""),
+		),
+	)
+
+	proxyReader := bar.ProxyReader(resp.Body)
+	defer func() {
+		if err := proxyReader.Close(); err != nil {
+			logrus.Error(err)
+		}
+	}()
+
+	if _, err := io.Copy(out, proxyReader); err != nil {
+		return err
+	}
+
+	p.Wait()
+	return nil
+}
+
+// Will error out if file without .xz already exists
+// Maybe extracting then renameing is a good idea here..
+// depends on xz: not pre-installed on mac, so it becomes a brew dependecy
+func decompressXZ(src string, output io.Writer) error {
+	fmt.Println("Extracting compressed file")
+	cmd := exec.Command("xzcat", "-k", src)
+	//cmd := exec.Command("xz", "-d", "-k", "-v", src)
+	stdOut, err := cmd.StdoutPipe()
+	if err != nil {
+		return err
+	}
+	//cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	go func() {
+		if _, err := io.Copy(output, stdOut); err != nil {
+			logrus.Error(err)
+		}
+	}()
+	return cmd.Run()
+}