Add migratev1 package
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
This commit is contained in:
Tonis Tiigi
Aaron Lehmann
parent
694df3ff9f
commit
5fc0e1f324
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@ -0,0 +1,364 @@
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package v1
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import (
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"errors"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"encoding/json"
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"github.com/Sirupsen/logrus"
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"github.com/docker/distribution/digest"
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"github.com/docker/distribution/reference"
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"github.com/docker/docker/distribution/metadata"
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"github.com/docker/docker/image"
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imagev1 "github.com/docker/docker/image/v1"
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"github.com/docker/docker/layer"
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"github.com/docker/docker/tag"
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)
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type graphIDRegistrar interface {
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RegisterByGraphID(string, layer.ChainID, string) (layer.Layer, error)
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Release(layer.Layer) ([]layer.Metadata, error)
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}
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type graphIDMounter interface {
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MountByGraphID(string, string, layer.ChainID) (layer.RWLayer, error)
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Unmount(string) error
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}
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const (
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graphDirName = "graph"
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tarDataFileName = "tar-data.json.gz"
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migrationFileName = ".migration-v1-images.json"
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migrationTagsFileName = ".migration-v1-tags"
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containersDirName = "containers"
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configFileNameLegacy = "config.json"
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configFileName = "config.v2.json"
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repositoriesFilePrefixLegacy = "repositories-"
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)
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var (
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errUnsupported = errors.New("migration is not supported")
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)
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// Migrate takes an old graph directory and transforms the metadata into the
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// new format.
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func Migrate(root, driverName string, ls layer.Store, is image.Store, ts tag.Store, ms metadata.Store) error {
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mappings := make(map[string]image.ID)
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if registrar, ok := ls.(graphIDRegistrar); !ok {
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return errUnsupported
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} else if err := migrateImages(root, registrar, is, ms, mappings); err != nil {
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return err
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}
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if mounter, ok := ls.(graphIDMounter); !ok {
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return errUnsupported
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} else if err := migrateContainers(root, mounter, is, mappings); err != nil {
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return err
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}
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if err := migrateTags(root, driverName, ts, mappings); err != nil {
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return err
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}
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return nil
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}
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func migrateImages(root string, ls graphIDRegistrar, is image.Store, ms metadata.Store, mappings map[string]image.ID) error {
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graphDir := filepath.Join(root, graphDirName)
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if _, err := os.Lstat(graphDir); err != nil {
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if os.IsNotExist(err) {
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return nil
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}
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return err
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}
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mfile := filepath.Join(root, migrationFileName)
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f, err := os.Open(mfile)
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if err != nil && !os.IsNotExist(err) {
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return err
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} else if err == nil {
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err := json.NewDecoder(f).Decode(&mappings)
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if err != nil {
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f.Close()
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return err
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}
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f.Close()
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}
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dir, err := ioutil.ReadDir(graphDir)
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if err != nil {
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return err
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}
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for _, v := range dir {
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v1ID := v.Name()
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if err := imagev1.ValidateID(v1ID); err != nil {
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continue
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}
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if _, exists := mappings[v1ID]; exists {
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continue
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}
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if err := migrateImage(v1ID, root, ls, is, ms, mappings); err != nil {
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continue
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}
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}
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f, err = os.OpenFile(mfile, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
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if err != nil {
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return err
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}
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defer f.Close()
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if err := json.NewEncoder(f).Encode(mappings); err != nil {
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return err
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}
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return nil
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}
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func migrateContainers(root string, ls graphIDMounter, is image.Store, imageMappings map[string]image.ID) error {
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containersDir := filepath.Join(root, containersDirName)
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dir, err := ioutil.ReadDir(containersDir)
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if err != nil {
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return err
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}
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for _, v := range dir {
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id := v.Name()
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if _, err := os.Stat(filepath.Join(containersDir, id, configFileName)); err == nil {
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continue
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}
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containerJSON, err := ioutil.ReadFile(filepath.Join(containersDir, id, configFileNameLegacy))
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if err != nil {
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return err
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}
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var c map[string]*json.RawMessage
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if err := json.Unmarshal(containerJSON, &c); err != nil {
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return err
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}
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imageStrJSON, ok := c["Image"]
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if !ok {
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return fmt.Errorf("invalid container configuration for %v", id)
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}
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var image string
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if err := json.Unmarshal([]byte(*imageStrJSON), &image); err != nil {
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return err
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}
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imageID, ok := imageMappings[image]
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if !ok {
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logrus.Errorf("image not migrated %v", imageID) // non-fatal error
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continue
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}
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c["Image"] = rawJSON(imageID)
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containerJSON, err = json.Marshal(c)
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if err != nil {
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return err
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}
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if err := ioutil.WriteFile(filepath.Join(containersDir, id, configFileName), containerJSON, 0600); err != nil {
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return err
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}
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img, err := is.Get(imageID)
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if err != nil {
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return err
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}
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_, err = ls.MountByGraphID(id, id, img.RootFS.ChainID())
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if err != nil {
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return err
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}
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err = ls.Unmount(id)
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if err != nil {
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return err
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}
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logrus.Infof("migrated container %s to point to %s", id, imageID)
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}
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return nil
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}
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type tagAdder interface {
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Add(ref reference.Named, id image.ID, force bool) error
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}
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func migrateTags(root, driverName string, ts tagAdder, mappings map[string]image.ID) error {
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migrationFile := filepath.Join(root, migrationTagsFileName)
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if _, err := os.Lstat(migrationFile); !os.IsNotExist(err) {
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return err
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}
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type repositories struct {
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Repositories map[string]map[string]string
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}
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var repos repositories
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f, err := os.Open(filepath.Join(root, repositoriesFilePrefixLegacy+driverName))
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if err != nil {
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if os.IsNotExist(err) {
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return nil
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}
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return err
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}
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defer f.Close()
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if err := json.NewDecoder(f).Decode(&repos); err != nil {
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return err
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}
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for name, repo := range repos.Repositories {
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for tag, id := range repo {
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if strongID, exists := mappings[id]; exists {
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ref, err := reference.WithName(name)
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if err != nil {
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logrus.Errorf("migrate tags: invalid name %q, %q", name, err)
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continue
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}
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if dgst, err := digest.ParseDigest(tag); err == nil {
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ref, err = reference.WithDigest(ref, dgst)
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if err != nil {
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logrus.Errorf("migrate tags: invalid digest %q, %q", dgst, err)
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continue
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}
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} else {
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ref, err = reference.WithTag(ref, tag)
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if err != nil {
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logrus.Errorf("migrate tags: invalid tag %q, %q", tag, err)
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continue
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}
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}
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if err := ts.Add(ref, strongID, false); err != nil {
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logrus.Errorf("can't migrate tag %q for %q, err: %q", ref.String(), strongID, err)
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}
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logrus.Infof("migrated tag %s:%s to point to %s", name, tag, strongID)
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}
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}
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}
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mf, err := os.Create(migrationFile)
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if err != nil {
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return err
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}
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mf.Close()
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return nil
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}
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func migrateImage(id, root string, ls graphIDRegistrar, is image.Store, ms metadata.Store, mappings map[string]image.ID) (err error) {
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defer func() {
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if err != nil {
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logrus.Errorf("migration failed for %v, err: %v", id, err)
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}
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}()
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jsonFile := filepath.Join(root, graphDirName, id, "json")
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imageJSON, err := ioutil.ReadFile(jsonFile)
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if err != nil {
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return err
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}
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var parent struct {
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Parent string
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ParentID digest.Digest `json:"parent_id"`
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}
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if err := json.Unmarshal(imageJSON, &parent); err != nil {
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return err
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}
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if parent.Parent == "" && parent.ParentID != "" { // v1.9
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parent.Parent = parent.ParentID.Hex()
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}
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// compatibilityID for parent
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parentCompatibilityID, err := ioutil.ReadFile(filepath.Join(root, graphDirName, id, "parent"))
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if err == nil && len(parentCompatibilityID) > 0 {
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parent.Parent = string(parentCompatibilityID)
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}
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var parentID image.ID
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if parent.Parent != "" {
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var exists bool
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if parentID, exists = mappings[parent.Parent]; !exists {
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if err := migrateImage(parent.Parent, root, ls, is, ms, mappings); err != nil {
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// todo: fail or allow broken chains?
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return err
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}
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parentID = mappings[parent.Parent]
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}
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}
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rootFS := image.NewRootFS()
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var history []image.History
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if parentID != "" {
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parentImg, err := is.Get(parentID)
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if err != nil {
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return err
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}
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rootFS = parentImg.RootFS
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history = parentImg.History
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}
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layer, err := ls.RegisterByGraphID(id, rootFS.ChainID(), filepath.Join(filepath.Join(root, graphDirName, id, tarDataFileName)))
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if err != nil {
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return err
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}
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logrus.Infof("migrated layer %s to %s", id, layer.DiffID())
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h, err := imagev1.HistoryFromConfig(imageJSON, false)
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if err != nil {
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return err
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}
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history = append(history, h)
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rootFS.Append(layer.DiffID())
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config, err := imagev1.MakeConfigFromV1Config(imageJSON, rootFS, history)
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if err != nil {
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return err
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}
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strongID, err := is.Create(config)
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if err != nil {
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return err
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}
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logrus.Infof("migrated image %s to %s", id, strongID)
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if parentID != "" {
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if err := is.SetParent(strongID, parentID); err != nil {
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return err
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}
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}
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checksum, err := ioutil.ReadFile(filepath.Join(root, graphDirName, id, "checksum"))
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if err == nil { // best effort
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dgst, err := digest.ParseDigest(string(checksum))
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if err == nil {
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blobSumService := metadata.NewBlobSumService(ms)
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blobSumService.Add(layer.DiffID(), dgst)
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}
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}
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_, err = ls.Release(layer)
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if err != nil {
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return err
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}
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mappings[id] = strongID
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return
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}
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func rawJSON(value interface{}) *json.RawMessage {
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jsonval, err := json.Marshal(value)
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if err != nil {
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return nil
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}
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return (*json.RawMessage)(&jsonval)
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}
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@ -0,0 +1,389 @@
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package v1
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import (
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"crypto/rand"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"path/filepath"
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"reflect"
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"testing"
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"github.com/docker/distribution/digest"
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"github.com/docker/distribution/reference"
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"github.com/docker/docker/distribution/metadata"
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"github.com/docker/docker/image"
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"github.com/docker/docker/layer"
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)
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func TestMigrateTags(t *testing.T) {
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tmpdir, err := ioutil.TempDir("", "migrate-tags")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(tmpdir)
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ioutil.WriteFile(filepath.Join(tmpdir, "repositories-generic"), []byte(`{"Repositories":{"busybox":{"latest":"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108","sha256:16a2a52884c2a9481ed267c2d46483eac7693b813a63132368ab098a71303f8a":"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108"},"registry":{"2":"5d165b8e4b203685301c815e95663231691d383fd5e3d3185d1ce3f8dddead3d","latest":"8d5547a9f329b1d3f93198cd661fb5117e5a96b721c5cf9a2c389e7dd4877128"}}}`), 0600)
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ta := &mockTagAdder{}
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err = migrateTags(tmpdir, "generic", ta, map[string]image.ID{
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"5d165b8e4b203685301c815e95663231691d383fd5e3d3185d1ce3f8dddead3d": image.ID("sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"),
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"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108": image.ID("sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9"),
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"abcdef3434c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108": image.ID("sha256:56434342345ae68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae"),
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})
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if err != nil {
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t.Fatal(err)
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}
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expected := map[string]string{
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"busybox:latest": "sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9",
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"busybox@sha256:16a2a52884c2a9481ed267c2d46483eac7693b813a63132368ab098a71303f8a": "sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9",
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"registry:2": "sha256:2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae",
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}
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if !reflect.DeepEqual(expected, ta.refs) {
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t.Fatalf("Invalid migrated tags: expected %q, got %q", expected, ta.refs)
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}
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// second migration is no-op
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ioutil.WriteFile(filepath.Join(tmpdir, "repositories-generic"), []byte(`{"Repositories":{"busybox":{"latest":"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108"`), 0600)
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err = migrateTags(tmpdir, "generic", ta, map[string]image.ID{
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"b3ca410aa2c115c05969a7b2c8cf8a9fcf62c1340ed6a601c9ee50df337ec108": image.ID("sha256:fcde2b2edba56bf408601fb721fe9b5c338d10ee429ea04fae5511b68fbf8fb9"),
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})
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if err != nil {
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t.Fatal(err)
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}
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if !reflect.DeepEqual(expected, ta.refs) {
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t.Fatalf("Invalid migrated tags: expected %q, got %q", expected, ta.refs)
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}
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}
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func TestMigrateContainers(t *testing.T) {
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tmpdir, err := ioutil.TempDir("", "migrate-containers")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(tmpdir)
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|
||||
err = addContainer(tmpdir, `{"State":{"Running":false,"Paused":false,"Restarting":false,"OOMKilled":false,"Dead":false,"Pid":0,"ExitCode":0,"Error":"","StartedAt":"2015-11-10T21:42:40.604267436Z","FinishedAt":"2015-11-10T21:42:41.869265487Z"},"ID":"f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c","Created":"2015-11-10T21:42:40.433831551Z","Path":"sh","Args":[],"Config":{"Hostname":"f780ee3f80e6","Domainname":"","User":"","AttachStdin":true,"AttachStdout":true,"AttachStderr":true,"Tty":true,"OpenStdin":true,"StdinOnce":true,"Env":null,"Cmd":["sh"],"Image":"busybox","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":{}},"Image":"2c5ac3f849df8627fcf2822727f87c57f38b7129d3604fbc11d861fe856ff093","NetworkSettings":{"Bridge":"","EndpointID":"","Gateway":"","GlobalIPv6Address":"","GlobalIPv6PrefixLen":0,"HairpinMode":false,"IPAddress":"","IPPrefixLen":0,"IPv6Gateway":"","LinkLocalIPv6Address":"","LinkLocalIPv6PrefixLen":0,"MacAddress":"","NetworkID":"","PortMapping":null,"Ports":null,"SandboxKey":"","SecondaryIPAddresses":null,"SecondaryIPv6Addresses":null},"ResolvConfPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/resolv.conf","HostnamePath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hostname","HostsPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hosts","LogPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c-json.log","Name":"/determined_euclid","Driver":"overlay","ExecDriver":"native-0.2","MountLabel":"","ProcessLabel":"","RestartCount":0,"UpdateDns":false,"HasBeenStartedBefore":false,"MountPoints":{},"Volumes":{},"VolumesRW":{},"AppArmorProfile":""}`)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// container with invalid image
|
||||
err = addContainer(tmpdir, `{"State":{"Running":false,"Paused":false,"Restarting":false,"OOMKilled":false,"Dead":false,"Pid":0,"ExitCode":0,"Error":"","StartedAt":"2015-11-10T21:42:40.604267436Z","FinishedAt":"2015-11-10T21:42:41.869265487Z"},"ID":"e780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c","Created":"2015-11-10T21:42:40.433831551Z","Path":"sh","Args":[],"Config":{"Hostname":"f780ee3f80e6","Domainname":"","User":"","AttachStdin":true,"AttachStdout":true,"AttachStderr":true,"Tty":true,"OpenStdin":true,"StdinOnce":true,"Env":null,"Cmd":["sh"],"Image":"busybox","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":{}},"Image":"4c5ac3f849df8627fcf2822727f87c57f38b7129d3604fbc11d861fe856ff093","NetworkSettings":{"Bridge":"","EndpointID":"","Gateway":"","GlobalIPv6Address":"","GlobalIPv6PrefixLen":0,"HairpinMode":false,"IPAddress":"","IPPrefixLen":0,"IPv6Gateway":"","LinkLocalIPv6Address":"","LinkLocalIPv6PrefixLen":0,"MacAddress":"","NetworkID":"","PortMapping":null,"Ports":null,"SandboxKey":"","SecondaryIPAddresses":null,"SecondaryIPv6Addresses":null},"ResolvConfPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/resolv.conf","HostnamePath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hostname","HostsPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/hosts","LogPath":"/var/lib/docker/containers/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c/f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c-json.log","Name":"/determined_euclid","Driver":"overlay","ExecDriver":"native-0.2","MountLabel":"","ProcessLabel":"","RestartCount":0,"UpdateDns":false,"HasBeenStartedBefore":false,"MountPoints":{},"Volumes":{},"VolumesRW":{},"AppArmorProfile":""}`)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
ls := &mockMounter{}
|
||||
|
||||
ifs, err := image.NewFSStoreBackend(filepath.Join(tmpdir, "imagedb"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
is, err := image.NewImageStore(ifs, ls)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
imgID, err := is.Create([]byte(`{"architecture":"amd64","config":{"AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Cmd":["sh"],"Entrypoint":null,"Env":null,"Hostname":"23304fc829f9","Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Labels":null,"OnBuild":null,"OpenStdin":false,"StdinOnce":false,"Tty":false,"Volumes":null,"WorkingDir":"","Domainname":"","User":""},"container":"349b014153779e30093d94f6df2a43c7a0a164e05aa207389917b540add39b51","container_config":{"AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Entrypoint":null,"Env":null,"Hostname":"23304fc829f9","Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Labels":null,"OnBuild":null,"OpenStdin":false,"StdinOnce":false,"Tty":false,"Volumes":null,"WorkingDir":"","Domainname":"","User":""},"created":"2015-10-31T22:22:55.613815829Z","docker_version":"1.8.2","history":[{"created":"2015-10-31T22:22:54.690851953Z","created_by":"/bin/sh -c #(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"},{"created":"2015-10-31T22:22:55.613815829Z","created_by":"/bin/sh -c #(nop) CMD [\"sh\"]"}],"os":"linux","rootfs":{"type":"layers","diff_ids":["sha256:c6f988f4874bb0add23a778f753c65efe992244e148a1d2ec2a8b664fb66bbd1","sha256:5f70bf18a086007016e948b04aed3b82103a36bea41755b6cddfaf10ace3c6ef"]}}`))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
err = migrateContainers(tmpdir, ls, is, map[string]image.ID{
|
||||
"2c5ac3f849df8627fcf2822727f87c57f38b7129d3604fbc11d861fe856ff093": imgID,
|
||||
})
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
expected := []mountInfo{{
|
||||
"f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c",
|
||||
"f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c",
|
||||
"sha256:c3191d32a37d7159b2e30830937d2e30268ad6c375a773a8994911a3aba9b93f",
|
||||
}}
|
||||
if !reflect.DeepEqual(expected, ls.mounts) {
|
||||
t.Fatalf("invalid mounts: expected %q, got %q", expected, ls.mounts)
|
||||
}
|
||||
|
||||
if actual, expected := ls.count, 0; actual != expected {
|
||||
t.Fatalf("invalid active mounts: expected %d, got %d", expected, actual)
|
||||
}
|
||||
|
||||
config2, err := ioutil.ReadFile(filepath.Join(tmpdir, "containers", "f780ee3f80e66e9b432a57049597118a66aab8932be88e5628d4c824edbee37c", "config.v2.json"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
var config struct{ Image string }
|
||||
err = json.Unmarshal(config2, &config)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if actual, expected := config.Image, string(imgID); actual != expected {
|
||||
t.Fatalf("invalid image pointer in migrated config: expected %q, got %q", expected, actual)
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func TestMigrateImages(t *testing.T) {
|
||||
tmpdir, err := ioutil.TempDir("", "migrate-images")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.RemoveAll(tmpdir)
|
||||
|
||||
// busybox from 1.9
|
||||
id1, err := addImage(tmpdir, `{"architecture":"amd64","config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":null,"Image":"","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"container":"23304fc829f9b9349416f6eb1afec162907eba3a328f51d53a17f8986f865d65","container_config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"],"Image":"","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"created":"2015-10-31T22:22:54.690851953Z","docker_version":"1.8.2","layer_id":"sha256:55dc925c23d1ed82551fd018c27ac3ee731377b6bad3963a2a4e76e753d70e57","os":"linux"}`, "", "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
id2, err := addImage(tmpdir, `{"architecture":"amd64","config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["sh"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"container":"349b014153779e30093d94f6df2a43c7a0a164e05aa207389917b540add39b51","container_config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"created":"2015-10-31T22:22:55.613815829Z","docker_version":"1.8.2","layer_id":"sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4","os":"linux","parent_id":"sha256:039b63dd2cbaa10d6015ea574392530571ed8d7b174090f032211285a71881d0"}`, id1, "")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
ls := &mockRegistrar{}
|
||||
|
||||
ifs, err := image.NewFSStoreBackend(filepath.Join(tmpdir, "imagedb"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
is, err := image.NewImageStore(ifs, ls)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
ms, err := metadata.NewFSMetadataStore(filepath.Join(tmpdir, "distribution"))
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
mappings := make(map[string]image.ID)
|
||||
|
||||
err = migrateImages(tmpdir, ls, is, ms, mappings)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
expected := map[string]image.ID{
|
||||
id1: image.ID("sha256:ca406eaf9c26898414ff5b7b3a023c33310759d6203be0663dbf1b3a712f432d"),
|
||||
id2: image.ID("sha256:a488bec94bb96b26a968f913d25ef7d8d204d727ca328b52b4b059c7d03260b6"),
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(mappings, expected) {
|
||||
t.Fatalf("invalid image mappings: expected %q, got %q", expected, mappings)
|
||||
}
|
||||
|
||||
if actual, expected := ls.count, 2; actual != expected {
|
||||
t.Fatalf("invalid register count: expected %q, got %q", expected, actual)
|
||||
}
|
||||
ls.count = 0
|
||||
|
||||
// next images are busybox from 1.8.2
|
||||
_, err = addImage(tmpdir, `{"id":"17583c7dd0dae6244203b8029733bdb7d17fccbb2b5d93e2b24cf48b8bfd06e2","parent":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","created":"2015-10-31T22:22:55.613815829Z","container":"349b014153779e30093d94f6df2a43c7a0a164e05aa207389917b540add39b51","container_config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"docker_version":"1.8.2","config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["sh"],"Image":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"architecture":"amd64","os":"linux","Size":0}`, "", "sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
_, err = addImage(tmpdir, `{"id":"d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498","created":"2015-10-31T22:22:54.690851953Z","container":"23304fc829f9b9349416f6eb1afec162907eba3a328f51d53a17f8986f865d65","container_config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) ADD file:a3bc1e842b69636f9df5256c49c5374fb4eef1e281fe3f282c65fb853ee171c5 in /"],"Image":"","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"docker_version":"1.8.2","config":{"Hostname":"23304fc829f9","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"ExposedPorts":null,"PublishService":"","Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":null,"Image":"","Volumes":null,"VolumeDriver":"","WorkingDir":"","Entrypoint":null,"NetworkDisabled":false,"MacAddress":"","OnBuild":null,"Labels":null},"architecture":"amd64","os":"linux","Size":1108935}`, "", "sha256:55dc925c23d1ed82551fd018c27ac3ee731377b6bad3963a2a4e76e753d70e57")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
err = migrateImages(tmpdir, ls, is, ms, mappings)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
expected["d1592a710ac323612bd786fa8ac20727c58d8a67847e5a65177c594f43919498"] = image.ID("sha256:c091bb33854e57e6902b74c08719856d30b5593c7db6143b2b48376b8a588395")
|
||||
expected["17583c7dd0dae6244203b8029733bdb7d17fccbb2b5d93e2b24cf48b8bfd06e2"] = image.ID("sha256:d963020e755ff2715b936065949472c1f8a6300144b922992a1a421999e71f07")
|
||||
|
||||
if actual, expected := ls.count, 2; actual != expected {
|
||||
t.Fatalf("invalid register count: expected %q, got %q", expected, actual)
|
||||
}
|
||||
|
||||
blobSumService := metadata.NewBlobSumService(ms)
|
||||
blobsums, err := blobSumService.GetBlobSums(layer.EmptyLayer.DiffID())
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
expectedBlobsums := []digest.Digest{
|
||||
"sha256:55dc925c23d1ed82551fd018c27ac3ee731377b6bad3963a2a4e76e753d70e57",
|
||||
"sha256:a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4",
|
||||
}
|
||||
|
||||
if !reflect.DeepEqual(expectedBlobsums, blobsums) {
|
||||
t.Fatalf("invalid blobsums: expected %q, got %q", expectedBlobsums, blobsums)
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func TestMigrateUnsupported(t *testing.T) {
|
||||
tmpdir, err := ioutil.TempDir("", "migrate-empty")
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
defer os.RemoveAll(tmpdir)
|
||||
|
||||
err = Migrate(tmpdir, "generic", nil, nil, nil, nil)
|
||||
if err != errUnsupported {
|
||||
t.Fatalf("expected unsupported error, got %q", err)
|
||||
}
|
||||
}
|
||||
|
||||
func addImage(dest, jsonConfig, parent, checksum string) (string, error) {
|
||||
var config struct{ ID string }
|
||||
if err := json.Unmarshal([]byte(jsonConfig), &config); err != nil {
|
||||
return "", err
|
||||
}
|
||||
if config.ID == "" {
|
||||
b := make([]byte, 32)
|
||||
rand.Read(b)
|
||||
config.ID = hex.EncodeToString(b)
|
||||
}
|
||||
contDir := filepath.Join(dest, "graph", config.ID)
|
||||
if err := os.MkdirAll(contDir, 0700); err != nil {
|
||||
return "", err
|
||||
}
|
||||
if err := ioutil.WriteFile(filepath.Join(contDir, "json"), []byte(jsonConfig), 0600); err != nil {
|
||||
return "", err
|
||||
}
|
||||
if parent != "" {
|
||||
if err := ioutil.WriteFile(filepath.Join(contDir, "parent"), []byte(parent), 0600); err != nil {
|
||||
return "", err
|
||||
}
|
||||
}
|
||||
if checksum != "" {
|
||||
if err := ioutil.WriteFile(filepath.Join(contDir, "checksum"), []byte(checksum), 0600); err != nil {
|
||||
return "", err
|
||||
}
|
||||
}
|
||||
return config.ID, nil
|
||||
}
|
||||
|
||||
func addContainer(dest, jsonConfig string) error {
|
||||
var config struct{ ID string }
|
||||
if err := json.Unmarshal([]byte(jsonConfig), &config); err != nil {
|
||||
return err
|
||||
}
|
||||
contDir := filepath.Join(dest, "containers", config.ID)
|
||||
if err := os.MkdirAll(contDir, 0700); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := ioutil.WriteFile(filepath.Join(contDir, "config.json"), []byte(jsonConfig), 0600); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type mockTagAdder struct {
|
||||
refs map[string]string
|
||||
}
|
||||
|
||||
func (t *mockTagAdder) Add(ref reference.Named, id image.ID, force bool) error {
|
||||
if t.refs == nil {
|
||||
t.refs = make(map[string]string)
|
||||
}
|
||||
t.refs[ref.String()] = id.String()
|
||||
return nil
|
||||
}
|
||||
|
||||
type mockRegistrar struct {
|
||||
layers map[layer.ChainID]*mockLayer
|
||||
count int
|
||||
}
|
||||
|
||||
func (r *mockRegistrar) RegisterByGraphID(graphID string, parent layer.ChainID, tarDataFile string) (layer.Layer, error) {
|
||||
r.count++
|
||||
l := &mockLayer{}
|
||||
if parent != "" {
|
||||
p, exists := r.layers[parent]
|
||||
if !exists {
|
||||
return nil, fmt.Errorf("invalid parent %q", parent)
|
||||
}
|
||||
l.parent = p
|
||||
l.diffIDs = append(l.diffIDs, p.diffIDs...)
|
||||
}
|
||||
l.diffIDs = append(l.diffIDs, layer.EmptyLayer.DiffID())
|
||||
if r.layers == nil {
|
||||
r.layers = make(map[layer.ChainID]*mockLayer)
|
||||
}
|
||||
r.layers[l.ChainID()] = l
|
||||
return l, nil
|
||||
}
|
||||
func (r *mockRegistrar) Release(l layer.Layer) ([]layer.Metadata, error) {
|
||||
return nil, nil
|
||||
}
|
||||
func (r *mockRegistrar) Get(layer.ChainID) (layer.Layer, error) {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
type mountInfo struct {
|
||||
name, graphID, parent string
|
||||
}
|
||||
type mockMounter struct {
|
||||
mounts []mountInfo
|
||||
count int
|
||||
}
|
||||
|
||||
func (r *mockMounter) MountByGraphID(name string, graphID string, parent layer.ChainID) (layer.RWLayer, error) {
|
||||
r.mounts = append(r.mounts, mountInfo{name, graphID, string(parent)})
|
||||
r.count++
|
||||
return nil, nil
|
||||
}
|
||||
func (r *mockMounter) Unmount(string) error {
|
||||
r.count--
|
||||
return nil
|
||||
}
|
||||
func (r *mockMounter) Get(layer.ChainID) (layer.Layer, error) {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
func (r *mockMounter) Release(layer.Layer) ([]layer.Metadata, error) {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
type mockLayer struct {
|
||||
diffIDs []layer.DiffID
|
||||
parent *mockLayer
|
||||
}
|
||||
|
||||
func (l *mockLayer) TarStream() (io.Reader, error) {
|
||||
return nil, nil
|
||||
}
|
||||
|
||||
func (l *mockLayer) ChainID() layer.ChainID {
|
||||
return layer.CreateChainID(l.diffIDs)
|
||||
}
|
||||
|
||||
func (l *mockLayer) DiffID() layer.DiffID {
|
||||
return l.diffIDs[len(l.diffIDs)-1]
|
||||
}
|
||||
|
||||
func (l *mockLayer) Parent() layer.Layer {
|
||||
if l.parent == nil {
|
||||
return nil
|
||||
}
|
||||
return l.parent
|
||||
}
|
||||
|
||||
func (l *mockLayer) Size() (int64, error) {
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (l *mockLayer) DiffSize() (int64, error) {
|
||||
return 0, nil
|
||||
}
|
||||
|
||||
func (l *mockLayer) Metadata() (map[string]string, error) {
|
||||
return nil, nil
|
||||
}
|
||||
Loading…
Reference in New Issue