drop docker/ code

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

README.md

@@ -117,9 +117,7 @@ TODO
 - update README with `layers` command
 - list all images on registry?
 - registry v2 search?
-- make skopeo docker registry v2 only
 - download layers in parallel and support docker load tar(s)
-- get rid of docker/docker code (?)
 - show repo tags via flag or when reference isn't tagged or digested
 - add tests (integration with deployed registries in container - Docker-like)
 - support rkt/appc image spec

cmd/skopeo/inspect.go

@@ -23,12 +23,11 @@ var inspectCmd = cli.Command{
 		},
 	},
 	Action: func(c *cli.Context) {
+		img, err := skopeo.ParseImage(c.Args().First())
+		if err != nil {
+			logrus.Fatal(err)
+		}
 		if c.Bool("raw") {
-			img, err := skopeo.ParseImage(c.Args().First())
-			if err != nil {
-				logrus.Fatal(err)
-			}
-			// TODO(runcom): this is not falling back to v1
 			// TODO(runcom): hardcoded schema 2 version 1
 			b, err := img.RawManifest("2-1")
 			if err != nil {
@@ -37,12 +36,11 @@ var inspectCmd = cli.Command{
 			fmt.Println(string(b))
 			return
 		}
-		// get the Image interface before inspecting...utils.go parseImage
-		imgInspect, err := inspect(c)
+		imgInspect, err := img.Manifest()
 		if err != nil {
 			logrus.Fatal(err)
 		}
-		out, err := json.Marshal(imgInspect)
+		out, err := json.MarshalIndent(imgInspect, "", "    ")
 		if err != nil {
 			logrus.Fatal(err)
 		}

docker.go

@@ -53,11 +53,36 @@ func (i *dockerImage) RawManifest(version string) ([]byte, error) {
 	return i.rawManifest, nil
 }
 
-func (i *dockerImage) Manifest(version string) (types.ImageManifest, error) {
-	// TODO(runcom): port docker/docker implementation under  docker/ to just
-	// use this!!! and do not rely on docker upstream code - will need to support
-	// v1 fall back also...
-	return nil, nil
+func (i *dockerImage) Manifest() (types.ImageManifest, error) {
+	// TODO(runcom): unused version param for now, default to docker v2-1
+	m, err := i.getSchema1Manifest()
+	if err != nil {
+		return nil, err
+	}
+	ms1, ok := m.(*manifestSchema1)
+	if !ok {
+		return nil, fmt.Errorf("error retrivieng manifest schema1")
+	}
+
+	// TODO(runcom): get all tags, last argument, and digest
+	return makeImageManifest(ms1, "", nil), nil
+}
+
+func makeImageManifest(m *manifestSchema1, dgst string, tagList []string) types.ImageManifest {
+	return &types.DockerImageManifest{
+		Tag:             m.Tag,
+		Digest:          dgst,
+		RepoTags:        tagList,
+		Comment:         "",
+		Created:         "",
+		ContainerConfig: nil,
+		DockerVersion:   "",
+		Author:          "",
+		Config:          nil,
+		Architecture:    "",
+		Os:              "",
+		Layers:          nil,
+	}
 }
 
 func (i *dockerImage) DockerTar() ([]byte, error) {
@@ -273,6 +298,13 @@ func (i *dockerImage) getSchema1Manifest() (manifest, error) {
 	if err := fixManifestLayers(mschema1); err != nil {
 		return nil, err
 	}
+	// TODO(runcom): verify manifest schema 1, 2 etc
+	//if len(m.FSLayers) != len(m.History) {
+	//return nil, fmt.Errorf("length of history not equal to number of layers for %q", ref.String())
+	//}
+	//if len(m.FSLayers) == 0 {
+	//return nil, fmt.Errorf("no FSLayers in manifest for %q", ref.String())
+	//}
 	return mschema1, nil
 }
 

types/types.go

@@ -22,7 +22,7 @@ type Repository interface {
 type Image interface {
 	// ref to repository?
 	Layers(layers ...string) error // configure download directory? Call it DownloadLayers?
-	Manifest(version string) (ImageManifest, error)
+	Manifest() (ImageManifest, error)
 	RawManifest(version string) ([]byte, error)
 	DockerTar() ([]byte, error) // ??? also, configure output directory
 }
@@ -48,5 +48,8 @@ type DockerImageManifest struct {
 }
 
 func (m *DockerImageManifest) Labels() map[string]string {
+	if m.Config == nil {
+		return nil
+	}
 	return m.Config.Labels
 }