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