containerd/import_test.go
Akihiro Suda b518f11dba client: add Import() and Export() for importing/exporting image in OCI format
Export as a tar (Note: "-" can be used for stdout):

    $ ctr images export /tmp/oci-busybox.tar docker.io/library/busybox:latest

Import a tar (Note: "-" can be used for stdin):

    $ ctr images import foo/new:latest /tmp/oci-busybox.tar

Note: media types are not converted at the moment: e.g.
  application/vnd.docker.image.rootfs.diff.tar.gzip
  -> application/vnd.oci.image.layer.v1.tar+gzip

Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
2017-07-28 04:47:53 +00:00

45 lines
863 B
Go

package containerd
import (
"runtime"
"testing"
)
// TestExportAndImport exports testImage as a tar stream,
// and import the tar stream as a new image.
func TestExportAndImport(t *testing.T) {
// TODO: support windows
if testing.Short() || runtime.GOOS == "windows" {
t.Skip()
}
ctx, cancel := testContext()
defer cancel()
client, err := New(address)
if err != nil {
t.Fatal(err)
}
defer client.Close()
pulled, err := client.Pull(ctx, testImage)
if err != nil {
t.Fatal(err)
}
exported, err := client.Export(ctx, pulled.Target())
if err != nil {
t.Fatal(err)
}
importRef := "test/export-and-import:tmp"
_, err = client.Import(ctx, importRef, exported, WithRefObject("@"+pulled.Target().Digest.String()))
if err != nil {
t.Fatal(err)
}
err = client.ImageService().Delete(ctx, importRef)
if err != nil {
t.Fatal(err)
}
}