// Mktemp creates a temporary sub-directory inside the graph's filesystem.
func (graph *Graph) Mktemp(id string) (string, error) {
dir := path.Join(graph.Root, "_tmp", common.GenerateRandomID())
if err := os.MkdirAll(dir, 0700); err != nil {
return "", err
}
return dir, nil
}
func TestRegister(t *testing.T) {
graph, _ := tempGraph(t)
defer nukeGraph(graph)
archive, err := fakeTar()
if err != nil {
t.Fatal(err)
}
image := &image.Image{
ID: common.GenerateRandomID(),
Comment: "testing",
Created: time.Now(),
}
err = graph.Register(image, archive)
if err != nil {
t.Fatal(err)
}
if images, err := graph.Map(); err != nil {
t.Fatal(err)
} else if l := len(images); l != 1 {
t.Fatalf("Wrong number of images. Should be %d, not %d", 1, l)
}
if resultImg, err := graph.Get(image.ID); err != nil {
t.Fatal(err)
} else {
if resultImg.ID != image.ID {
t.Fatalf("Wrong image ID. Should be '%s', not '%s'", image.ID, resultImg.ID)
}
if resultImg.Comment != image.Comment {
t.Fatalf("Wrong image comment. Should be '%s', not '%s'", image.Comment, resultImg.Comment)
}
}
}
func BenchmarkTruncIndexNew500(b *testing.B) {
var testSet []string
for i := 0; i < 500; i++ {
testSet = append(testSet, common.GenerateRandomID())
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
NewTruncIndex(testSet)
}
}
func TestByParent(t *testing.T) {
archive1, _ := fakeTar()
archive2, _ := fakeTar()
archive3, _ := fakeTar()
graph, _ := tempGraph(t)
defer nukeGraph(graph)
parentImage := &image.Image{
ID: common.GenerateRandomID(),
Comment: "parent",
Created: time.Now(),
Parent: "",
}
childImage1 := &image.Image{
ID: common.GenerateRandomID(),
Comment: "child1",
Created: time.Now(),
Parent: parentImage.ID,
}
childImage2 := &image.Image{
ID: common.GenerateRandomID(),
Comment: "child2",
Created: time.Now(),
Parent: parentImage.ID,
}
_ = graph.Register(parentImage, archive1)
_ = graph.Register(childImage1, archive2)
_ = graph.Register(childImage2, archive3)
byParent, err := graph.ByParent()
if err != nil {
t.Fatal(err)
}
numChildren := len(byParent[parentImage.ID])
if numChildren != 2 {
t.Fatalf("Expected 2 children, found %d", numChildren)
}
}
func BenchmarkTruncIndexAdd500(b *testing.B) {
var testSet []string
for i := 0; i < 500; i++ {
testSet = append(testSet, common.GenerateRandomID())
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
index := NewTruncIndex([]string{})
for _, id := range testSet {
if err := index.Add(id); err != nil {
b.Fatal(err)
}
}
}
}
func (d *Daemon) ContainerExecCreate(job *engine.Job) engine.Status {
if len(job.Args) != 1 {
return job.Errorf("Usage: %s [options] container command [args]", job.Name)
}
if strings.HasPrefix(d.execDriver.Name(), lxc.DriverName) {
return job.Error(lxc.ErrExec)
}
var name = job.Args[0]
container, err := d.getActiveContainer(name)
if err != nil {
return job.Error(err)
}
config, err := runconfig.ExecConfigFromJob(job)
if err != nil {
return job.Error(err)
}
entrypoint, args := d.getEntrypointAndArgs(nil, config.Cmd)
processConfig := execdriver.ProcessConfig{
Tty: config.Tty,
Entrypoint: entrypoint,
Arguments: args,
}
execConfig := &execConfig{
ID: common.GenerateRandomID(),
OpenStdin: config.AttachStdin,
OpenStdout: config.AttachStdout,
OpenStderr: config.AttachStderr,
StreamConfig: StreamConfig{},
ProcessConfig: processConfig,
Container: container,
Running: false,
}
container.LogEvent("exec_create: " + execConfig.ProcessConfig.Entrypoint + " " + strings.Join(execConfig.ProcessConfig.Arguments, " "))
d.registerExecCommand(execConfig)
job.Printf("%s\n", execConfig.ID)
return engine.StatusOK
}
func (daemon *Daemon) generateIdAndName(name string) (string, string, error) {
var (
err error
id = common.GenerateRandomID()
)
if name == "" {
if name, err = daemon.generateNewName(id); err != nil {
return "", "", err
}
return id, name, nil
}
if name, err = daemon.reserveName(id, name); err != nil {
return "", "", err
}
return id, name, nil
}
func (r *Repository) newVolume(path string, writable bool) (*Volume, error) {
var (
isBindMount bool
err error
id = common.GenerateRandomID()
)
if path != "" {
isBindMount = true
}
if path == "" {
path, err = r.createNewVolumePath(id)
if err != nil {
return nil, err
}
}
path = filepath.Clean(path)
// Ignore the error here since the path may not exist
// Really just want to make sure the path we are using is real(or non-existant)
if cleanPath, err := filepath.EvalSymlinks(path); err == nil {
path = cleanPath
}
v := &Volume{
ID: id,
Path: path,
repository: r,
Writable: writable,
containers: make(map[string]struct{}),
configPath: r.configPath + "/" + id,
IsBindMount: isBindMount,
}
if err := v.initialize(); err != nil {
return nil, err
}
return v, r.add(v)
}
// Test that Register can be interrupted cleanly without side effects
func TestInterruptedRegister(t *testing.T) {
graph, _ := tempGraph(t)
defer nukeGraph(graph)
badArchive, w := io.Pipe() // Use a pipe reader as a fake archive which never yields data
image := &image.Image{
ID: common.GenerateRandomID(),
Comment: "testing",
Created: time.Now(),
}
w.CloseWithError(errors.New("But I'm not a tarball!")) // (Nobody's perfect, darling)
graph.Register(image, badArchive)
if _, err := graph.Get(image.ID); err == nil {
t.Fatal("Image should not exist after Register is interrupted")
}
// Registering the same image again should succeed if the first register was interrupted
goodArchive, err := fakeTar()
if err != nil {
t.Fatal(err)
}
if err := graph.Register(image, goodArchive); err != nil {
t.Fatal(err)
}
}
func BenchmarkTruncIndexGet500(b *testing.B) {
var testSet []string
var testKeys []string
for i := 0; i < 500; i++ {
testSet = append(testSet, common.GenerateRandomID())
}
index := NewTruncIndex([]string{})
for _, id := range testSet {
if err := index.Add(id); err != nil {
b.Fatal(err)
}
l := rand.Intn(12) + 12
testKeys = append(testKeys, id[:l])
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
for _, id := range testKeys {
if res, err := index.Get(id); err != nil {
b.Fatal(res, err)
}
}
}
}
// Create creates a new image and registers it in the graph.
func (graph *Graph) Create(layerData archive.ArchiveReader, containerID, containerImage, comment, author string, containerConfig, config *runconfig.Config) (*image.Image, error) {
img := &image.Image{
ID: common.GenerateRandomID(),
Comment: comment,
Created: time.Now().UTC(),
DockerVersion: dockerversion.VERSION,
Author: author,
Config: config,
Architecture: runtime.GOARCH,
OS: runtime.GOOS,
}
if containerID != "" {
img.Parent = containerImage
img.Container = containerID
img.ContainerConfig = *containerConfig
}
if err := graph.Register(img, layerData); err != nil {
return nil, err
}
return img, nil
}