Update the registry app to use the new storage interfaces

Signed-off-by: Stephen J Day <stephen.day@docker.com>

docs/app.go

@@ -26,8 +26,8 @@ type App struct {
 	// driver maintains the app global storage driver instance.
 	driver storagedriver.StorageDriver
 
-	// services contains the main services instance for the application.
+	// registry is the primary registry backend for the app instance.
-	services *storage.Services
+	registry storage.Registry
 
 	layerHandler storage.LayerHandler
 
@@ -63,7 +63,7 @@ func NewApp(configuration configuration.Configuration) *App {
 	}
 
 	app.driver = driver
-	app.services = storage.NewServices(app.driver)
+	app.registry = storage.NewRegistryWithDriver(app.driver)
 	authType := configuration.Auth.Type()
 
 	if authType != "" {
@@ -136,11 +136,11 @@ func (app *App) dispatcher(dispatch dispatchFunc) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		context := app.context(r)
 
-		if err := app.authorized(w, r, context); err != nil {
+		if err := app.authorized(w, r, context, context.vars["name"]); err != nil {
 			return
 		}
 
-		context.log = log.WithField("name", context.Name)
+		context.log = log.WithField("name", context.Repository.Name())
 		handler := dispatch(context, r)
 
 		ssrw := &singleStatusResponseWriter{ResponseWriter: w}
@@ -165,7 +165,6 @@ func (app *App) context(r *http.Request) *Context {
 	vars := mux.Vars(r)
 	context := &Context{
 		App:        app,
-		Name:       vars["name"],
 		urlBuilder: v2.NewURLBuilderFromRequest(r),
 	}
 
@@ -175,19 +174,23 @@ func (app *App) context(r *http.Request) *Context {
 	return context
 }
 
-// authorized checks if the request can proceed with with request access-
+// authorized checks if the request can proceed with access to the requested
-// level. If it cannot, the method will return an error.
+// repository. If it succeeds, the repository will be available on the
-func (app *App) authorized(w http.ResponseWriter, r *http.Request, context *Context) error {
+// context. An error will be if access is not available.
+func (app *App) authorized(w http.ResponseWriter, r *http.Request, context *Context, repo string) error {
 	if app.accessController == nil {
+		// No access controller, so we simply provide access.
+		context.Repository = app.registry.Repository(repo)
+
 		return nil // access controller is not enabled.
 	}
 
 	var accessRecords []auth.Access
 
-	if context.Name != "" {
+	if repo != "" {
 		resource := auth.Resource{
 			Type: "repository",
-			Name: context.Name,
+			Name: repo,
 		}
 
 		switch r.Method {
@@ -256,6 +259,10 @@ func (app *App) authorized(w http.ResponseWriter, r *http.Request, context *Cont
 		return err
 	}
 
+	// At this point, the request should have access to the repository under
+	// the requested operation. Make is available on the context.
+	context.Repository = app.registry.Repository(repo)
+
 	return nil
 }
 

docs/app_test.go

@@ -10,6 +10,8 @@ import (
 	"github.com/docker/distribution/api/v2"
 	_ "github.com/docker/distribution/auth/silly"
 	"github.com/docker/distribution/configuration"
+	"github.com/docker/distribution/storage"
+	"github.com/docker/distribution/storagedriver/inmemory"
 )
 
 // TestAppDispatcher builds an application with a test dispatcher and ensures
@@ -17,9 +19,12 @@ import (
 // This only tests the dispatch mechanism. The underlying dispatchers must be
 // tested individually.
 func TestAppDispatcher(t *testing.T) {
+	driver := inmemory.New()
 	app := &App{
-		Config: configuration.Configuration{},
+		Config:   configuration.Configuration{},
-		router: v2.Router(),
+		router:   v2.Router(),
+		driver:   driver,
+		registry: storage.NewRegistryWithDriver(driver),
 	}
 	server := httptest.NewServer(app)
 	router := v2.Router()
@@ -32,8 +37,8 @@ func TestAppDispatcher(t *testing.T) {
 	varCheckingDispatcher := func(expectedVars map[string]string) dispatchFunc {
 		return func(ctx *Context, r *http.Request) http.Handler {
 			// Always checks the same name context
-			if ctx.Name != ctx.vars["name"] {
+			if ctx.Repository.Name() != ctx.vars["name"] {
-				t.Fatalf("unexpected name: %q != %q", ctx.Name, "foo/bar")
+				t.Fatalf("unexpected name: %q != %q", ctx.Repository.Name(), "foo/bar")
 			}
 
 			// Check that we have all that is expected

docs/context.go

@@ -3,6 +3,7 @@ package registry
 import (
 	"github.com/Sirupsen/logrus"
 	"github.com/docker/distribution/api/v2"
+	"github.com/docker/distribution/storage"
 )
 
 // Context should contain the request specific context for use in across
@@ -12,9 +13,9 @@ type Context struct {
 	// App points to the application structure that created this context.
 	*App
 
-	// Name is the prefix for the current request. Corresponds to the
+	// Repository is the repository for the current request. All requests
-	// namespace/repository associated with the image.
+	// should be scoped to a single repository. This field may be nil.
-	Name string
+	Repository storage.Repository
 
 	// Errors is a collection of errors encountered during the request to be
 	// returned to the client API. If errors are added to the collection, the

docs/images.go

@@ -38,8 +38,8 @@ type imageManifestHandler struct {
 
 // GetImageManifest fetches the image manifest from the storage backend, if it exists.
 func (imh *imageManifestHandler) GetImageManifest(w http.ResponseWriter, r *http.Request) {
-	manifests := imh.services.Manifests()
+	manifests := imh.Repository.Manifests()
-	manifest, err := manifests.Get(imh.Name, imh.Tag)
+	manifest, err := manifests.Get(imh.Tag)
 
 	if err != nil {
 		imh.Errors.Push(v2.ErrorCodeManifestUnknown, err)
@@ -54,7 +54,7 @@ func (imh *imageManifestHandler) GetImageManifest(w http.ResponseWriter, r *http
 
 // PutImageManifest validates and stores and image in the registry.
 func (imh *imageManifestHandler) PutImageManifest(w http.ResponseWriter, r *http.Request) {
-	manifests := imh.services.Manifests()
+	manifests := imh.Repository.Manifests()
 	dec := json.NewDecoder(r.Body)
 
 	var manifest manifest.SignedManifest
@@ -64,7 +64,7 @@ func (imh *imageManifestHandler) PutImageManifest(w http.ResponseWriter, r *http
 		return
 	}
 
-	if err := manifests.Put(imh.Name, imh.Tag, &manifest); err != nil {
+	if err := manifests.Put(imh.Tag, &manifest); err != nil {
 		// TODO(stevvooe): These error handling switches really need to be
 		// handled by an app global mapper.
 		switch err := err.(type) {
@@ -96,8 +96,8 @@ func (imh *imageManifestHandler) PutImageManifest(w http.ResponseWriter, r *http
 
 // DeleteImageManifest removes the image with the given tag from the registry.
 func (imh *imageManifestHandler) DeleteImageManifest(w http.ResponseWriter, r *http.Request) {
-	manifests := imh.services.Manifests()
+	manifests := imh.Repository.Manifests()
-	if err := manifests.Delete(imh.Name, imh.Tag); err != nil {
+	if err := manifests.Delete(imh.Tag); err != nil {
 		switch err := err.(type) {
 		case storage.ErrUnknownManifest:
 			imh.Errors.Push(v2.ErrorCodeManifestUnknown, err)

docs/layer.go

@@ -42,9 +42,8 @@ type layerHandler struct {
 // GetLayer fetches the binary data from backend storage returns it in the
 // response.
 func (lh *layerHandler) GetLayer(w http.ResponseWriter, r *http.Request) {
-	layers := lh.services.Layers()
+	layers := lh.Repository.Layers()
-
+	layer, err := layers.Fetch(lh.Digest)
-	layer, err := layers.Fetch(lh.Name, lh.Digest)
 
 	if err != nil {
 		switch err := err.(type) {

docs/layerupload.go

@@ -43,6 +43,14 @@ func layerUploadDispatcher(ctx *Context, r *http.Request) http.Handler {
 		}
 		luh.State = state
 
+		if state.Name != ctx.Repository.Name() {
+			return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				ctx.log.Infof("mismatched repository name in upload state: %q != %q", state.Name, luh.Repository.Name())
+				w.WriteHeader(http.StatusBadRequest)
+				luh.Errors.Push(v2.ErrorCodeBlobUploadInvalid, err)
+			})
+		}
+
 		if state.UUID != luh.UUID {
 			return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 				ctx.log.Infof("mismatched uuid in upload state: %q != %q", state.UUID, luh.UUID)
@@ -51,8 +59,8 @@ func layerUploadDispatcher(ctx *Context, r *http.Request) http.Handler {
 			})
 		}
 
-		layers := ctx.services.Layers()
+		layers := ctx.Repository.Layers()
-		upload, err := layers.Resume(luh.Name, luh.UUID)
+		upload, err := layers.Resume(luh.UUID)
 		if err != nil {
 			ctx.log.Errorf("error resolving upload: %v", err)
 			if err == storage.ErrLayerUploadUnknown {
@@ -114,8 +122,8 @@ type layerUploadHandler struct {
 // StartLayerUpload begins the layer upload process and allocates a server-
 // side upload session.
 func (luh *layerUploadHandler) StartLayerUpload(w http.ResponseWriter, r *http.Request) {
-	layers := luh.services.Layers()
+	layers := luh.Repository.Layers()
-	upload, err := layers.Upload(luh.Name)
+	upload, err := layers.Upload()
 	if err != nil {
 		w.WriteHeader(http.StatusInternalServerError) // Error conditions here?
 		luh.Errors.Push(v2.ErrorCodeUnknown, err)
@@ -222,7 +230,7 @@ func (luh *layerUploadHandler) layerUploadResponse(w http.ResponseWriter, r *htt
 	}
 
 	// TODO(stevvooe): Need a better way to manage the upload state automatically.
-	luh.State.Name = luh.Name
+	luh.State.Name = luh.Repository.Name()
 	luh.State.UUID = luh.Upload.UUID()
 	luh.State.Offset = offset
 	luh.State.StartedAt = luh.Upload.StartedAt()

docs/tags.go

@@ -33,14 +33,14 @@ type tagsAPIResponse struct {
 // GetTags returns a json list of tags for a specific image name.
 func (th *tagsHandler) GetTags(w http.ResponseWriter, r *http.Request) {
 	defer r.Body.Close()
-	manifests := th.services.Manifests()
+	manifests := th.Repository.Manifests()
 
-	tags, err := manifests.Tags(th.Name)
+	tags, err := manifests.Tags()
 	if err != nil {
 		switch err := err.(type) {
 		case storage.ErrUnknownRepository:
 			w.WriteHeader(404)
-			th.Errors.Push(v2.ErrorCodeNameUnknown, map[string]string{"name": th.Name})
+			th.Errors.Push(v2.ErrorCodeNameUnknown, map[string]string{"name": th.Repository.Name()})
 		default:
 			th.Errors.PushErr(err)
 		}
@@ -51,7 +51,7 @@ func (th *tagsHandler) GetTags(w http.ResponseWriter, r *http.Request) {
 
 	enc := json.NewEncoder(w)
 	if err := enc.Encode(tagsAPIResponse{
-		Name: th.Name,
+		Name: th.Repository.Name(),
 		Tags: tags,
 	}); err != nil {
 		th.Errors.PushErr(err)