func registerImageLayer(cake *layercake.Docker, img *image.Image) {
tmp, err := ioutil.TempDir("", "my-img")
Expect(err).NotTo(HaveOccurred())
defer os.RemoveAll(tmp)
Expect(ioutil.WriteFile(path.Join(tmp, img.ID), []byte("Hello"), 0700)).To(Succeed())
archiver, _ := archive.Tar(tmp, archive.Uncompressed)
Expect(cake.Register(img, archiver)).To(Succeed())
}
func createContainerLayer(cake *layercake.Docker, id, parent layercake.ID, containerId string) {
Expect(cake.Create(id, parent, containerId)).To(Succeed())
}
"github.com/onsi/gomega/gexec"
_ "github.com/docker/docker/daemon/graphdriver/aufs"
_ "github.com/docker/docker/daemon/graphdriver/vfs"
_ "github.com/docker/docker/pkg/chrootarchive" // allow reexec of docker-applyLayer
"github.com/docker/docker/pkg/reexec"
)
func init() {
reexec.Init()
}
var _ = Describe("Docker", func() {
var (
root string
driver graphdriver.Driver
cake *layercake.Docker
)
BeforeEach(func() {
var err error
root, err = ioutil.TempDir("", "cakeroot")
Expect(err).NotTo(HaveOccurred())
Expect(syscall.Mount("tmpfs", root, "tmpfs", 0, "")).To(Succeed())
driver, err := graphdriver.GetDriver("vfs", root, nil)
Expect(err).NotTo(HaveOccurred())
graph, err := graph.NewGraph(root, driver)
Expect(err).NotTo(HaveOccurred())