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moby--moby/daemon/image_exporter.go
John Howard e05cedcbf9 LCOW: Image exporter update
Signed-off-by: John Howard <jhoward@microsoft.com>
2017-06-20 19:49:54 -07:00

37 lines
1.5 KiB
Go

package daemon
import (
"io"
"runtime"
"github.com/docker/docker/image/tarexport"
"github.com/docker/docker/pkg/system"
)
// ExportImage exports a list of images to the given output stream. The
// exported images are archived into a tar when written to the output
// stream. All images with the given tag and all versions containing
// the same tag are exported. names is the set of tags to export, and
// outStream is the writer which the images are written to.
func (daemon *Daemon) ExportImage(names []string, outStream io.Writer) error {
// TODO @jhowardmsft LCOW. This will need revisiting later.
platform := runtime.GOOS
if platform == "windows" && system.LCOWSupported() {
platform = "linux"
}
imageExporter := tarexport.NewTarExporter(daemon.stores[platform].imageStore, daemon.stores[platform].layerStore, daemon.stores[platform].referenceStore, daemon)
return imageExporter.Save(names, outStream)
}
// LoadImage uploads a set of images into the repository. This is the
// complement of ImageExport. The input stream is an uncompressed tar
// ball containing images and metadata.
func (daemon *Daemon) LoadImage(inTar io.ReadCloser, outStream io.Writer, quiet bool) error {
// TODO @jhowardmsft LCOW. This will need revisiting later.
platform := runtime.GOOS
if platform == "windows" && system.LCOWSupported() {
platform = "linux"
}
imageExporter := tarexport.NewTarExporter(daemon.stores[platform].imageStore, daemon.stores[platform].layerStore, daemon.stores[platform].referenceStore, daemon)
return imageExporter.Load(inTar, outStream, quiet)
}