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authorbaude <bbaude@redhat.com>2019-02-19 10:08:43 -0600
committerbaude <bbaude@redhat.com>2019-02-20 12:58:05 -0600
commit711ac9305185e645f2970d09ff76c2761132202a (patch)
treee8c7c83be19cc075446b20ea49a88c529dda69f1 /pkg
parent4de0bf9c74624de8a2cab1e5cbebc0beaa67339a (diff)
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podman-remote save [image]
Add the ability to save an image from the remote-host to the remote-client. Signed-off-by: baude <bbaude@redhat.com>
Diffstat (limited to 'pkg')
-rw-r--r--pkg/varlinkapi/images.go99
1 files changed, 99 insertions, 0 deletions
diff --git a/pkg/varlinkapi/images.go b/pkg/varlinkapi/images.go
index d12ab97ab..77df77a29 100644
--- a/pkg/varlinkapi/images.go
+++ b/pkg/varlinkapi/images.go
@@ -736,3 +736,102 @@ func (i *LibpodAPI) ImagesPrune(call iopodman.VarlinkCall, all bool) error {
}
return call.ReplyImagesPrune(prunedImages)
}
+
+// ImageSave ....
+func (i *LibpodAPI) ImageSave(call iopodman.VarlinkCall, options iopodman.ImageSaveOptions) error {
+ newImage, err := i.Runtime.ImageRuntime().NewFromLocal(options.Name)
+ if err != nil {
+ return call.ReplyErrorOccurred(err.Error())
+ }
+
+ // Determine if we are dealing with a tarball or dir
+ var output string
+ outputToDir := false
+ if options.Format == "oci-archive" || options.Format == "docker-archive" {
+ tempfile, err := ioutil.TempFile("", "varlink_send")
+ if err != nil {
+ return call.ReplyErrorOccurred(err.Error())
+ }
+ output = tempfile.Name()
+ tempfile.Close()
+ } else {
+ var err error
+ outputToDir = true
+ output, err = ioutil.TempDir("", "varlink_send")
+ if err != nil {
+ return call.ReplyErrorOccurred(err.Error())
+ }
+ }
+ if err != nil {
+ return call.ReplyErrorOccurred(err.Error())
+ }
+ if call.WantsMore() {
+ call.Continues = true
+ }
+
+ saveOutput := bytes.NewBuffer([]byte{})
+ c := make(chan error)
+ go func() {
+ err := newImage.Save(getContext(), options.Name, options.Format, output, options.MoreTags, options.Quiet, options.Compress)
+ c <- err
+ close(c)
+ }()
+
+ // TODO When pull output gets fixed for the remote client, we need to look into how we can turn below
+ // into something re-usable. it is in build too
+ var log []string
+ done := false
+ for {
+ line, err := saveOutput.ReadString('\n')
+ if err == nil {
+ log = append(log, line)
+ continue
+ } else if err == io.EOF {
+ select {
+ case err := <-c:
+ if err != nil {
+ logrus.Errorf("reading of output during save failed for %s", newImage.ID())
+ return call.ReplyErrorOccurred(err.Error())
+ }
+ done = true
+ default:
+ if !call.WantsMore() {
+ time.Sleep(1 * time.Second)
+ break
+ }
+ br := iopodman.MoreResponse{
+ Logs: log,
+ }
+ call.ReplyImageSave(br)
+ log = []string{}
+ }
+ } else {
+ return call.ReplyErrorOccurred(err.Error())
+ }
+ if done {
+ break
+ }
+ }
+ call.Continues = false
+
+ sendfile := output
+ // Image has been saved to `output`
+ if outputToDir {
+ // If the output is a directory, we need to tar up the directory to send it back
+ //Create a tempfile for the directory tarball
+ outputFile, err := ioutil.TempFile("", "varlink_save_dir")
+ if err != nil {
+ return err
+ }
+ defer outputFile.Close()
+ if err := utils.TarToFilesystem(output, outputFile); err != nil {
+ return call.ReplyErrorOccurred(err.Error())
+ }
+ sendfile = outputFile.Name()
+ }
+ br := iopodman.MoreResponse{
+ Logs: log,
+ Id: sendfile,
+ }
+ return call.ReplyPushImage(br)
+}