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Enable URLs returned from the registry to be configured as relative.

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Signed-off-by: Richard Scothern <richard.scothern@gmail.com>
This commit is contained in:
Richard Scothern 2016-02-22 17:49:23 -08:00
parent 22cab6d148
commit 3dd506d896
6 changed files with 210 additions and 91 deletions
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19
docs/api/v2/urls.go
View file

@ -19,31 +19,33 @@ import (
type URLBuilder struct {
root *url.URL // url root (ie http://localhost/)
router *mux.Router
relative bool
}
// NewURLBuilder creates a URLBuilder with provided root url object.
func NewURLBuilder(root *url.URL) *URLBuilder {
func NewURLBuilder(root *url.URL, relative bool) *URLBuilder {
return &URLBuilder{
root: root,
router: Router(),
relative: relative,
}
}
// NewURLBuilderFromString workes identically to NewURLBuilder except it takes
// a string argument for the root, returning an error if it is not a valid
// url.
func NewURLBuilderFromString(root string) (*URLBuilder, error) {
func NewURLBuilderFromString(root string, relative bool) (*URLBuilder, error) {
u, err := url.Parse(root)
if err != nil {
return nil, err
}
return NewURLBuilder(u), nil
return NewURLBuilder(u, relative), nil
}
// NewURLBuilderFromRequest uses information from an *http.Request to
// construct the root url.
func NewURLBuilderFromRequest(r *http.Request) *URLBuilder {
func NewURLBuilderFromRequest(r *http.Request, relative bool) *URLBuilder {
var scheme string
forwardedProto := r.Header.Get("X-Forwarded-Proto")
@ -85,7 +87,7 @@ func NewURLBuilderFromRequest(r *http.Request) *URLBuilder {
u.Path = requestPath[0 : index+1]
}
return NewURLBuilder(u)
return NewURLBuilder(u, relative)
}
// BuildBaseURL constructs a base url for the API, typically just "/v2/".
@ -194,12 +196,13 @@ func (ub *URLBuilder) cloneRoute(name string) clonedRoute {
*route = *ub.router.GetRoute(name) // clone the route
*root = *ub.root
return clonedRoute{Route: route, root: root}
return clonedRoute{Route: route, root: root, relative: ub.relative}
}
type clonedRoute struct {
*mux.Route
root *url.URL
relative bool
}
func (cr clonedRoute) URL(pairs ...string) (*url.URL, error) {
@ -208,6 +211,10 @@ func (cr clonedRoute) URL(pairs ...string) (*url.URL, error) {
return nil, err
}
if cr.relative {
return routeURL, nil
}
if routeURL.Scheme == "" && routeURL.User == nil && routeURL.Host == "" {
routeURL.Path = routeURL.Path[1:]
}

60
docs/api/v2/urls_test.go
View file

@ -92,8 +92,9 @@ func TestURLBuilder(t *testing.T) {
"https://localhost:5443",
}
doTest := func(relative bool) {
for _, root := range roots {
urlBuilder, err := NewURLBuilderFromString(root)
urlBuilder, err := NewURLBuilderFromString(root, relative)
if err != nil {
t.Fatalf("unexpected error creating urlbuilder: %v", err)
}
@ -103,14 +104,19 @@ func TestURLBuilder(t *testing.T) {
if err != nil {
t.Fatalf("%s: error building url: %v", testCase.description, err)
}
expectedURL := root + testCase.expectedPath
expectedURL := testCase.expectedPath
if !relative {
expectedURL = root + expectedURL
}
if url != expectedURL {
t.Fatalf("%s: %q != %q", testCase.description, url, expectedURL)
}
}
}
}
doTest(true)
doTest(false)
}
func TestURLBuilderWithPrefix(t *testing.T) {
@ -121,8 +127,9 @@ func TestURLBuilderWithPrefix(t *testing.T) {
"https://localhost:5443/prefix/",
}
doTest := func(relative bool) {
for _, root := range roots {
urlBuilder, err := NewURLBuilderFromString(root)
urlBuilder, err := NewURLBuilderFromString(root, relative)
if err != nil {
t.Fatalf("unexpected error creating urlbuilder: %v", err)
}
@ -133,13 +140,18 @@ func TestURLBuilderWithPrefix(t *testing.T) {
t.Fatalf("%s: error building url: %v", testCase.description, err)
}
expectedURL := root[0:len(root)-1] + testCase.expectedPath
expectedURL := testCase.expectedPath
if !relative {
expectedURL = root[0:len(root)-1] + expectedURL
}
if url != expectedURL {
t.Fatalf("%s: %q != %q", testCase.description, url, expectedURL)
}
}
}
}
doTest(true)
doTest(false)
}
type builderFromRequestTestCase struct {
@ -197,13 +209,13 @@ func TestBuilderFromRequest(t *testing.T) {
},
},
}
doTest := func(relative bool) {
for _, tr := range testRequests {
var builder *URLBuilder
if tr.configHost.Scheme != "" && tr.configHost.Host != "" {
builder = NewURLBuilder(&tr.configHost)
builder = NewURLBuilder(&tr.configHost, relative)
} else {
builder = NewURLBuilderFromRequest(tr.request)
builder = NewURLBuilderFromRequest(tr.request, relative)
}
for _, testCase := range makeURLBuilderTestCases(builder) {
@ -215,14 +227,20 @@ func TestBuilderFromRequest(t *testing.T) {
var expectedURL string
proto, ok := tr.request.Header["X-Forwarded-Proto"]
if !ok {
expectedURL = tr.base + testCase.expectedPath
expectedURL = testCase.expectedPath
if !relative {
expectedURL = tr.base + expectedURL
}
} else {
urlBase, err := url.Parse(tr.base)
if err != nil {
t.Fatal(err)
}
urlBase.Scheme = proto[0]
expectedURL = urlBase.String() + testCase.expectedPath
expectedURL = testCase.expectedPath
if !relative {
expectedURL = urlBase.String() + expectedURL
}
}
if buildURL != expectedURL {
@ -230,6 +248,9 @@ func TestBuilderFromRequest(t *testing.T) {
}
}
}
}
doTest(true)
doTest(false)
}
func TestBuilderFromRequestWithPrefix(t *testing.T) {
@ -270,12 +291,13 @@ func TestBuilderFromRequestWithPrefix(t *testing.T) {
},
}
var relative bool
for _, tr := range testRequests {
var builder *URLBuilder
if tr.configHost.Scheme != "" && tr.configHost.Host != "" {
builder = NewURLBuilder(&tr.configHost)
builder = NewURLBuilder(&tr.configHost, false)
} else {
builder = NewURLBuilderFromRequest(tr.request)
builder = NewURLBuilderFromRequest(tr.request, false)
}
for _, testCase := range makeURLBuilderTestCases(builder) {
@ -283,17 +305,25 @@ func TestBuilderFromRequestWithPrefix(t *testing.T) {
if err != nil {
t.Fatalf("%s: error building url: %v", testCase.description, err)
}
var expectedURL string
proto, ok := tr.request.Header["X-Forwarded-Proto"]
if !ok {
expectedURL = tr.base[0:len(tr.base)-1] + testCase.expectedPath
expectedURL = testCase.expectedPath
if !relative {
expectedURL = tr.base[0:len(tr.base)-1] + expectedURL
}
} else {
urlBase, err := url.Parse(tr.base)
if err != nil {
t.Fatal(err)
}
urlBase.Scheme = proto[0]
expectedURL = urlBase.String()[0:len(urlBase.String())-1] + testCase.expectedPath
expectedURL = testCase.expectedPath
if !relative {
expectedURL = urlBase.String()[0:len(urlBase.String())-1] + expectedURL
}
}
if buildURL != expectedURL {

4
docs/client/repository.go
View file

@ -62,7 +62,7 @@ func checkHTTPRedirect(req *http.Request, via []*http.Request) error {
// NewRegistry creates a registry namespace which can be used to get a listing of repositories
func NewRegistry(ctx context.Context, baseURL string, transport http.RoundTripper) (Registry, error) {
ub, err := v2.NewURLBuilderFromString(baseURL)
ub, err := v2.NewURLBuilderFromString(baseURL, false)
if err != nil {
return nil, err
}
@ -133,7 +133,7 @@ func (r *registry) Repositories(ctx context.Context, entries []string, last stri
// NewRepository creates a new Repository for the given repository name and base URL.
func NewRepository(ctx context.Context, name reference.Named, baseURL string, transport http.RoundTripper) (distribution.Repository, error) {
ub, err := v2.NewURLBuilderFromString(baseURL)
ub, err := v2.NewURLBuilderFromString(baseURL, false)
if err != nil {
return nil, err
}

122
docs/handlers/api_test.go
View file

@ -43,7 +43,6 @@ var headerConfig = http.Header{
// 200 OK response.
func TestCheckAPI(t *testing.T) {
env := newTestEnv(t, false)
baseURL, err := env.builder.BuildBaseURL()
if err != nil {
t.Fatalf("unexpected error building base url: %v", err)
@ -294,6 +293,79 @@ func TestBlobDelete(t *testing.T) {
testBlobDelete(t, env, args)
}
func TestRelativeURL(t *testing.T) {
config := configuration.Configuration{
Storage: configuration.Storage{
"inmemory": configuration.Parameters{},
},
}
config.HTTP.Headers = headerConfig
config.HTTP.RelativeURLs = false
env := newTestEnvWithConfig(t, &config)
ref, _ := reference.WithName("foo/bar")
uploadURLBaseAbs, _ := startPushLayer(t, env, ref)
u, err := url.Parse(uploadURLBaseAbs)
if err != nil {
t.Fatal(err)
}
if !u.IsAbs() {
t.Fatal("Relative URL returned from blob upload chunk with non-relative configuration")
}
args := makeBlobArgs(t)
resp, err := doPushLayer(t, env.builder, ref, args.layerDigest, uploadURLBaseAbs, args.layerFile)
if err != nil {
t.Fatalf("unexpected error doing layer push relative url: %v", err)
}
checkResponse(t, "relativeurl blob upload", resp, http.StatusCreated)
u, err = url.Parse(resp.Header.Get("Location"))
if err != nil {
t.Fatal(err)
}
if !u.IsAbs() {
t.Fatal("Relative URL returned from blob upload with non-relative configuration")
}
config.HTTP.RelativeURLs = true
args = makeBlobArgs(t)
uploadURLBaseRelative, _ := startPushLayer(t, env, ref)
u, err = url.Parse(uploadURLBaseRelative)
if err != nil {
t.Fatal(err)
}
if u.IsAbs() {
t.Fatal("Absolute URL returned from blob upload chunk with relative configuration")
}
// Start a new upload in absolute mode to get a valid base URL
config.HTTP.RelativeURLs = false
uploadURLBaseAbs, _ = startPushLayer(t, env, ref)
u, err = url.Parse(uploadURLBaseAbs)
if err != nil {
t.Fatal(err)
}
if !u.IsAbs() {
t.Fatal("Relative URL returned from blob upload chunk with non-relative configuration")
}
// Complete upload with relative URLs enabled to ensure the final location is relative
config.HTTP.RelativeURLs = true
resp, err = doPushLayer(t, env.builder, ref, args.layerDigest, uploadURLBaseAbs, args.layerFile)
if err != nil {
t.Fatalf("unexpected error doing layer push relative url: %v", err)
}
checkResponse(t, "relativeurl blob upload", resp, http.StatusCreated)
u, err = url.Parse(resp.Header.Get("Location"))
if err != nil {
t.Fatal(err)
}
if u.IsAbs() {
t.Fatal("Relative URL returned from blob upload with non-relative configuration")
}
}
func TestBlobDeleteDisabled(t *testing.T) {
deleteEnabled := false
env := newTestEnv(t, deleteEnabled)
@ -349,7 +421,7 @@ func testBlobAPI(t *testing.T, env *testEnv, args blobArgs) *testEnv {
// ------------------------------------------
// Start an upload, check the status then cancel
uploadURLBase, uploadUUID := startPushLayer(t, env.builder, imageName)
uploadURLBase, uploadUUID := startPushLayer(t, env, imageName)
// A status check should work
resp, err = http.Get(uploadURLBase)
@ -384,7 +456,7 @@ func testBlobAPI(t *testing.T, env *testEnv, args blobArgs) *testEnv {
// -----------------------------------------
// Do layer push with an empty body and different digest
uploadURLBase, uploadUUID = startPushLayer(t, env.builder, imageName)
uploadURLBase, uploadUUID = startPushLayer(t, env, imageName)
resp, err = doPushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, bytes.NewReader([]byte{}))
if err != nil {
t.Fatalf("unexpected error doing bad layer push: %v", err)
@ -400,7 +472,7 @@ func testBlobAPI(t *testing.T, env *testEnv, args blobArgs) *testEnv {
t.Fatalf("unexpected error digesting empty buffer: %v", err)
}
uploadURLBase, uploadUUID = startPushLayer(t, env.builder, imageName)
uploadURLBase, uploadUUID = startPushLayer(t, env, imageName)
pushLayer(t, env.builder, imageName, zeroDigest, uploadURLBase, bytes.NewReader([]byte{}))
// -----------------------------------------
@ -413,7 +485,7 @@ func testBlobAPI(t *testing.T, env *testEnv, args blobArgs) *testEnv {
t.Fatalf("unexpected error digesting empty tar: %v", err)
}
uploadURLBase, uploadUUID = startPushLayer(t, env.builder, imageName)
uploadURLBase, uploadUUID = startPushLayer(t, env, imageName)
pushLayer(t, env.builder, imageName, emptyDigest, uploadURLBase, bytes.NewReader(emptyTar))
// ------------------------------------------
@ -421,7 +493,7 @@ func testBlobAPI(t *testing.T, env *testEnv, args blobArgs) *testEnv {
layerLength, _ := layerFile.Seek(0, os.SEEK_END)
layerFile.Seek(0, os.SEEK_SET)
uploadURLBase, uploadUUID = startPushLayer(t, env.builder, imageName)
uploadURLBase, uploadUUID = startPushLayer(t, env, imageName)
pushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, layerFile)
// ------------------------------------------
@ -435,7 +507,7 @@ func testBlobAPI(t *testing.T, env *testEnv, args blobArgs) *testEnv {
canonicalDigest := canonicalDigester.Digest()
layerFile.Seek(0, 0)
uploadURLBase, uploadUUID = startPushLayer(t, env.builder, imageName)
uploadURLBase, uploadUUID = startPushLayer(t, env, imageName)
uploadURLBase, dgst := pushChunk(t, env.builder, imageName, uploadURLBase, layerFile, layerLength)
finishUpload(t, env.builder, imageName, uploadURLBase, dgst)
@ -585,7 +657,7 @@ func testBlobDelete(t *testing.T, env *testEnv, args blobArgs) {
// Reupload previously deleted blob
layerFile.Seek(0, os.SEEK_SET)
uploadURLBase, _ := startPushLayer(t, env.builder, imageName)
uploadURLBase, _ := startPushLayer(t, env, imageName)
pushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, layerFile)
layerFile.Seek(0, os.SEEK_SET)
@ -625,7 +697,7 @@ func TestDeleteDisabled(t *testing.T) {
if err != nil {
t.Fatalf("Error building blob URL")
}
uploadURLBase, _ := startPushLayer(t, env.builder, imageName)
uploadURLBase, _ := startPushLayer(t, env, imageName)
pushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, layerFile)
resp, err := httpDelete(layerURL)
@ -651,7 +723,7 @@ func TestDeleteReadOnly(t *testing.T) {
if err != nil {
t.Fatalf("Error building blob URL")
}
uploadURLBase, _ := startPushLayer(t, env.builder, imageName)
uploadURLBase, _ := startPushLayer(t, env, imageName)
pushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, layerFile)
env.app.readOnly = true
@ -871,7 +943,7 @@ func testManifestAPISchema1(t *testing.T, env *testEnv, imageName reference.Name
expectedLayers[dgst] = rs
unsignedManifest.FSLayers[i].BlobSum = dgst
uploadURLBase, _ := startPushLayer(t, env.builder, imageName)
uploadURLBase, _ := startPushLayer(t, env, imageName)
pushLayer(t, env.builder, imageName, dgst, uploadURLBase, rs)
}
@ -1177,7 +1249,7 @@ func testManifestAPISchema2(t *testing.T, env *testEnv, imageName reference.Name
}`)
sampleConfigDigest := digest.FromBytes(sampleConfig)
uploadURLBase, _ := startPushLayer(t, env.builder, imageName)
uploadURLBase, _ := startPushLayer(t, env, imageName)
pushLayer(t, env.builder, imageName, sampleConfigDigest, uploadURLBase, bytes.NewReader(sampleConfig))
manifest.Config.Digest = sampleConfigDigest
manifest.Config.Size = int64(len(sampleConfig))
@ -1210,7 +1282,7 @@ func testManifestAPISchema2(t *testing.T, env *testEnv, imageName reference.Name
expectedLayers[dgst] = rs
manifest.Layers[i].Digest = dgst
uploadURLBase, _ := startPushLayer(t, env.builder, imageName)
uploadURLBase, _ := startPushLayer(t, env, imageName)
pushLayer(t, env.builder, imageName, dgst, uploadURLBase, rs)
}
@ -1842,7 +1914,7 @@ func newTestEnvWithConfig(t *testing.T, config *configuration.Configuration) *te
app := NewApp(ctx, config)
server := httptest.NewServer(handlers.CombinedLoggingHandler(os.Stderr, app))
builder, err := v2.NewURLBuilderFromString(server.URL + config.HTTP.Prefix)
builder, err := v2.NewURLBuilderFromString(server.URL+config.HTTP.Prefix, false)
if err != nil {
t.Fatalf("error creating url builder: %v", err)
@ -1904,21 +1976,33 @@ func putManifest(t *testing.T, msg, url, contentType string, v interface{}) *htt
return resp
}
func startPushLayer(t *testing.T, ub *v2.URLBuilder, name reference.Named) (location string, uuid string) {
layerUploadURL, err := ub.BuildBlobUploadURL(name)
func startPushLayer(t *testing.T, env *testEnv, name reference.Named) (location string, uuid string) {
layerUploadURL, err := env.builder.BuildBlobUploadURL(name)
if err != nil {
t.Fatalf("unexpected error building layer upload url: %v", err)
}
u, err := url.Parse(layerUploadURL)
if err != nil {
t.Fatalf("error parsing layer upload URL: %v", err)
}
base, err := url.Parse(env.server.URL)
if err != nil {
t.Fatalf("error parsing server URL: %v", err)
}
layerUploadURL = base.ResolveReference(u).String()
resp, err := http.Post(layerUploadURL, "", nil)
if err != nil {
t.Fatalf("unexpected error starting layer push: %v", err)
}
defer resp.Body.Close()
checkResponse(t, fmt.Sprintf("pushing starting layer push %v", name.String()), resp, http.StatusAccepted)
u, err := url.Parse(resp.Header.Get("Location"))
u, err = url.Parse(resp.Header.Get("Location"))
if err != nil {
t.Fatalf("error parsing location header: %v", err)
}
@ -1943,7 +2027,6 @@ func doPushLayer(t *testing.T, ub *v2.URLBuilder, name reference.Named, dgst dig
u.RawQuery = url.Values{
"_state": u.Query()["_state"],
"digest": []string{dgst.String()},
}.Encode()
@ -2211,8 +2294,7 @@ func createRepository(env *testEnv, t *testing.T, imageName string, tag string)
expectedLayers[dgst] = rs
unsignedManifest.FSLayers[i].BlobSum = dgst
uploadURLBase, _ := startPushLayer(t, env.builder, imageNameRef)
uploadURLBase, _ := startPushLayer(t, env, imageNameRef)
pushLayer(t, env.builder, imageNameRef, dgst, uploadURLBase, rs)
}

4
docs/handlers/app.go
View file

@ -721,9 +721,9 @@ func (app *App) context(w http.ResponseWriter, r *http.Request) *Context {
// A "host" item in the configuration takes precedence over
// X-Forwarded-Proto and X-Forwarded-Host headers, and the
// hostname in the request.
context.urlBuilder = v2.NewURLBuilder(&app.httpHost)
context.urlBuilder = v2.NewURLBuilder(&app.httpHost, false)
} else {
context.urlBuilder = v2.NewURLBuilderFromRequest(r)
context.urlBuilder = v2.NewURLBuilderFromRequest(r, app.Config.HTTP.RelativeURLs)
}
return context

2
docs/handlers/app_test.go
View file

@ -160,7 +160,7 @@ func TestNewApp(t *testing.T) {
app := NewApp(ctx, &config)
server := httptest.NewServer(app)
builder, err := v2.NewURLBuilderFromString(server.URL)
builder, err := v2.NewURLBuilderFromString(server.URL, false)
if err != nil {
t.Fatalf("error creating urlbuilder: %v", err)
}