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authorbaude <bbaude@redhat.com>2021-03-29 14:37:58 -0500
committerbaude <bbaude@redhat.com>2021-03-29 14:42:45 -0500
commit236798e001021b6f9d8323afa923d0540396e1d5 (patch)
treedc6ce005fa4af1d2d1f43cad8ef4dabf2a1abdb7 /pkg/machine/pull.go
parentaa96cb6739303a4bf76aeb6395e8ef79ff8ef0ee (diff)
downloadpodman-236798e001021b6f9d8323afa923d0540396e1d5.tar.gz
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podman machine init user input
users may now provide a fully qualified local file path or a URL to seed the disk-image to be used in the VM. [NO TESTS NEEDED] Signed-off-by: baude <bbaude@redhat.com>
Diffstat (limited to 'pkg/machine/pull.go')
-rw-r--r--pkg/machine/pull.go113
1 files changed, 113 insertions, 0 deletions
diff --git a/pkg/machine/pull.go b/pkg/machine/pull.go
index 39dde15b8..d719d2e6d 100644
--- a/pkg/machine/pull.go
+++ b/pkg/machine/pull.go
@@ -3,17 +3,94 @@ package machine
import (
"fmt"
"io"
+ "io/ioutil"
"net/http"
+ url2 "net/url"
"os"
"os/exec"
+ "path/filepath"
"strings"
"time"
+ "github.com/containers/image/v5/pkg/compression"
+ "github.com/docker/docker/pkg/archive"
"github.com/sirupsen/logrus"
"github.com/vbauerster/mpb/v6"
"github.com/vbauerster/mpb/v6/decor"
)
+// GenericDownload is used when a user provides a URL
+// or path for an image
+type GenericDownload struct {
+ Download
+}
+
+// NewGenericDownloader is used when the disk image is provided by the user
+func NewGenericDownloader(vmType, vmName, pullPath string) (DistributionDownload, error) {
+ var (
+ imageName string
+ )
+ dataDir, err := GetDataDir(vmType)
+ if err != nil {
+ return nil, err
+ }
+ dl := Download{}
+ // Is pullpath a file or url?
+ getURL, err := url2.Parse(pullPath)
+ if err != nil {
+ return nil, err
+ }
+ if len(getURL.Scheme) > 0 {
+ urlSplit := strings.Split(pullPath, "/")
+ imageName = urlSplit[len(urlSplit)-1]
+ dl.LocalUncompressedFile = filepath.Join(dataDir, imageName)
+ dl.URL = getURL
+ dl.LocalPath = filepath.Join(dataDir, imageName)
+ } else {
+ // Dealing with FilePath
+ imageName = filepath.Base(pullPath)
+ dl.LocalUncompressedFile = filepath.Join(dataDir, imageName)
+ dl.LocalPath = pullPath
+ }
+ dl.VMName = vmName
+ dl.ImageName = imageName
+ // The download needs to be pulled into the datadir
+
+ gd := GenericDownload{Download: dl}
+ gd.LocalUncompressedFile = gd.getLocalUncompressedName()
+ return gd, nil
+}
+
+func (g GenericDownload) getLocalUncompressedName() string {
+ var (
+ extension string
+ )
+ switch {
+ case strings.HasSuffix(g.LocalPath, ".bz2"):
+ extension = ".bz2"
+ case strings.HasSuffix(g.LocalPath, ".gz"):
+ extension = ".gz"
+ case strings.HasSuffix(g.LocalPath, ".xz"):
+ extension = ".xz"
+ }
+ uncompressedFilename := filepath.Join(filepath.Dir(g.LocalUncompressedFile), g.VMName+"_"+g.ImageName)
+ return strings.TrimSuffix(uncompressedFilename, extension)
+}
+
+func (g GenericDownload) DownloadImage() error {
+ // If we have a URL for this "downloader", we now pull it
+ if g.URL != nil {
+ if err := DownloadVMImage(g.URL, g.LocalPath); err != nil {
+ return err
+ }
+ }
+ return Decompress(g.LocalPath, g.getLocalUncompressedName())
+}
+
+func (g GenericDownload) Get() *Download {
+ return &g.Download
+}
+
// DownloadVMImage downloads a VM image from url to given path
// with download status
func DownloadVMImage(downloadURL fmt.Stringer, localImagePath string) error {
@@ -75,6 +152,22 @@ func DownloadVMImage(downloadURL fmt.Stringer, localImagePath string) error {
return nil
}
+func Decompress(localPath, uncompressedPath string) error {
+ uncompressedFileWriter, err := os.OpenFile(uncompressedPath, os.O_CREATE|os.O_RDWR, 0600)
+ if err != nil {
+ return err
+ }
+ sourceFile, err := ioutil.ReadFile(localPath)
+ if err != nil {
+ return err
+ }
+
+ if compressionType := archive.DetectCompression(sourceFile); compressionType.Extension() == "tar.xz" {
+ return decompressXZ(localPath, uncompressedFileWriter)
+ }
+ return decompressEverythingElse(localPath, uncompressedFileWriter)
+}
+
// 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
@@ -95,3 +188,23 @@ func decompressXZ(src string, output io.Writer) error {
}()
return cmd.Run()
}
+
+func decompressEverythingElse(src string, output io.Writer) error {
+ fmt.Println("Extracting compressed file")
+ f, err := os.Open(src)
+ if err != nil {
+ return err
+ }
+ uncompressStream, _, err := compression.AutoDecompress(f)
+ if err != nil {
+ return err
+ }
+ defer func() {
+ if err := uncompressStream.Close(); err != nil {
+ logrus.Error(err)
+ }
+ }()
+
+ _, err = io.Copy(output, uncompressStream)
+ return err
+}