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package api
// This part is an extract from https://github.com/jwilder/docker-squash/
import (
"fmt"
"os"
jww "github.com/spf13/jwalterweatherman"
"os/exec"
)
type ExportedImage struct {
Path string
JsonPath string
VersionPath string
LayerTarPath string
LayerDirPath string
}
func (e *ExportedImage) CreateDirs() error {
return os.MkdirAll(e.Path, 0755)
}
func (e *ExportedImage) TarLayer() error {
cwd, err := os.Getwd()
if err != nil {
return err
}
err = os.Chdir(e.LayerDirPath)
if err != nil {
return err
}
defer os.Chdir(cwd)
cmd := exec.Command("sudo", "/bin/sh", "-c", fmt.Sprintf("%s cvf ../layer.tar ./", TarCmd))
out, err := cmd.CombinedOutput()
if err != nil {
jww.INFO.Println(out)
return err
}
return nil
}
func (e *ExportedImage) RemoveLayerDir() error {
return os.RemoveAll(e.LayerDirPath)
}
func (e *ExportedImage) ExtractLayerDir(unpackmode string) error {
err := os.MkdirAll(e.LayerDirPath, 0755)
if err != nil {
return err
}
if err := ExtractLayer(&ExtractOpts{
Source: e.LayerTarPath,
Destination: e.LayerDirPath,
Compressed: true,
KeepDirlinks: true,
Rootless: false,
UnpackMode: unpackmode}); err != nil {
return err
}
return nil
}
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