func (g *retainer) Retain(log lager.Logger, id layercake.ID) {
g.retainedImagesMu.Lock()
defer g.retainedImagesMu.Unlock()
if g.retainedImages == nil {
g.retainedImages = make(map[string]struct{})
}
g.retainedImages[id.GraphID()] = struct{}{}
}
func (g *retainer) Check(id layercake.ID) bool {
g.retainedImagesMu.Lock()
defer g.retainedImagesMu.Unlock()
if g.retainedImages == nil {
return false
}
_, ok := g.retainedImages[id.GraphID()]
return ok
}
func (a *QuotaedDriver) GetMntPath(id layercake.ID) string {
return a.makeMntPath(id.GraphID())
}
Expect(err).NotTo(HaveOccurred())
cake = &layercake.Docker{
Graph: graph,
Driver: driver,
}
})
AfterEach(func() {
Expect(syscall.Unmount(root, 0)).To(Succeed())
Expect(os.RemoveAll(root)).To(Succeed())
})
Describe("Register", func() {
Context("after registering a layer", func() {
var id layercake.ID
var parent layercake.ID
BeforeEach(func() {
id = layercake.ContainerID("")
parent = layercake.ContainerID("")
})
ItCanReadWriteTheLayer := func() {
It("can read and write files", func() {
p, err := cake.Path(id)
Expect(err).NotTo(HaveOccurred())
Expect(ioutil.WriteFile(path.Join(p, "foo"), []byte("hi"), 0700)).To(Succeed())
p, err = cake.Path(id)
Expect(err).NotTo(HaveOccurred())
"code.cloudfoundry.org/garden-shed/layercake/fake_id"
"github.com/cloudfoundry/gunk/command_runner"
"github.com/cloudfoundry/gunk/command_runner/fake_command_runner"
"github.com/cloudfoundry/gunk/command_runner/linux_command_runner"
"github.com/docker/docker/image"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Aufs", func() {
var (
aufsCake *layercake.AufsCake
cake *fake_cake.FakeCake
parentID *fake_id.FakeID
childID *fake_id.FakeID
testError error
namespacedChildID layercake.ID
otherNamespacedChildID layercake.ID
runner command_runner.CommandRunner
baseDirectory string
)
BeforeEach(func() {
var err error
baseDirectory, err = ioutil.TempDir("", "aufsTestGraphRoot")
Expect(err).NotTo(HaveOccurred())
cake = new(fake_cake.FakeCake)
runner = linux_command_runner.New()
parentID = new(fake_id.FakeID)