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Merge pull request #24539 from smarterclayton/unify_stream_and_serial 

Unify Streaming and normal Serializers
pull/6/head
Wojciech Tyczynski 2016-04-25 11:25:16 +02:00
parent c5df0bf23e 668fae253f
commit c0020aff59
35 changed files with 1169 additions and 350 deletions
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12
api/swagger-spec/apps_v1alpha1.json
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12
api/swagger-spec/autoscaling_v1.json
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12
api/swagger-spec/batch_v1.json
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api/swagger-spec/extensions_v1beta1.json
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api/swagger-spec/v1.json
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<div id="footer">
<div id="footer-text">
Last updated 2016-04-16 18:09:53 UTC
Last updated 2016-04-22 03:24:34 UTC
</div>
</div>
</body>

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<div id="footer">
<div id="footer-text">
Last updated 2016-04-16 18:09:44 UTC
Last updated 2016-04-22 03:24:25 UTC
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<div id="footer-text">
Last updated 2016-04-16 18:09:34 UTC
Last updated 2016-04-22 03:24:17 UTC
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<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -29159,8 +29351,14 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
<p>application/json</p>
</li>
<li>
<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -29299,8 +29497,14 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
<p>application/json</p>
</li>
<li>
<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -29447,8 +29651,14 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
<p>application/json</p>
</li>
<li>
<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -29587,8 +29797,14 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
<p>application/json</p>
</li>
<li>
<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -29727,8 +29943,14 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
<p>application/json</p>
</li>
<li>
<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -29867,8 +30089,14 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
<p>application/json</p>
</li>
<li>
<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -30007,8 +30235,14 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
<p>application/json</p>
</li>
<li>
<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -30147,8 +30381,14 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
<p>application/json</p>
</li>
<li>
<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -30287,8 +30527,14 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
<p>application/json</p>
</li>
<li>
<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -30427,8 +30673,14 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
<p>application/json</p>
</li>
<li>
<p>application/json;stream=watch</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf</p>
</li>
<li>
<p>application/vnd.kubernetes.protobuf;stream=watch</p>
</li>
</ul>
</div>
</div>
@ -30448,7 +30700,7 @@ span.icon > [class^="icon-"], span.icon > [class*=" icon-"] { cursor: default; }
</div>
<div id="footer">
<div id="footer-text">
Last updated 2016-04-16 18:09:23 UTC
Last updated 2016-04-22 03:24:07 UTC
</div>
</div>
</body>

1
examples/apiserver/apiserver.go
View File

@ -96,7 +96,6 @@ func Run(serverOptions *genericapiserver.ServerRunOptions) error {
},
Scheme: api.Scheme,
NegotiatedSerializer: api.Codecs,
NegotiatedStreamSerializer: api.StreamCodecs,
}
if err := s.InstallAPIGroups([]genericapiserver.APIGroupInfo{apiGroupInfo}); err != nil {
return fmt.Errorf("Error in installing API: %v", err)

3
pkg/api/register.go
View File

@ -29,9 +29,6 @@ var Scheme = runtime.NewScheme()
// Codecs provides access to encoding and decoding for the scheme
var Codecs = serializer.NewCodecFactory(Scheme)
// StreamCodecs provides access to streaming encoding and decoding for the scheme
var StreamCodecs = serializer.NewStreamingCodecFactory(Scheme)
// GroupName is the group name use in this package
const GroupName = ""

5
pkg/apiserver/api_installer.go
View File

@ -459,7 +459,6 @@ func (a *APIInstaller) registerResourceHandlers(path string, storage rest.Storag
reqScope := RequestScope{
ContextFunc: ctxFn,
Serializer: a.group.Serializer,
StreamSerializer: a.group.StreamSerializer,
ParameterCodec: a.group.ParameterCodec,
Creater: a.group.Creater,
Convertor: a.group.Convertor,
@ -641,7 +640,7 @@ func (a *APIInstaller) registerResourceHandlers(path string, storage rest.Storag
Doc(doc).
Param(ws.QueryParameter("pretty", "If 'true', then the output is pretty printed.")).
Operation("watch"+namespaced+kind+strings.Title(subresource)).
Produces(a.group.StreamSerializer.SupportedMediaTypes()...).
Produces(a.group.Serializer.SupportedStreamingMediaTypes()...).
Returns(http.StatusOK, "OK", versionedWatchEvent).
Writes(versionedWatchEvent)
if err := addObjectParams(ws, route, versionedListOptions); err != nil {
@ -660,7 +659,7 @@ func (a *APIInstaller) registerResourceHandlers(path string, storage rest.Storag
Doc(doc).
Param(ws.QueryParameter("pretty", "If 'true', then the output is pretty printed.")).
Operation("watch"+namespaced+kind+strings.Title(subresource)+"List").
Produces(a.group.StreamSerializer.SupportedMediaTypes()...).
Produces(a.group.Serializer.SupportedStreamingMediaTypes()...).
Returns(http.StatusOK, "OK", versionedWatchEvent).
Writes(versionedWatchEvent)
if err := addObjectParams(ws, route, versionedListOptions); err != nil {

3
pkg/apiserver/apiserver.go
View File

@ -86,9 +86,6 @@ type APIGroupVersion struct {
// Serializer is used to determine how to convert responses from API methods into bytes to send over
// the wire.
Serializer runtime.NegotiatedSerializer
// StreamSerializer is used for sending a series of objects to the client over a single channel, where
// the underlying channel has no innate framing (such as an io.Writer)
StreamSerializer runtime.NegotiatedSerializer
ParameterCodec runtime.ParameterCodec
Typer runtime.ObjectTyper

23
pkg/apiserver/apiserver_test.go
View File

@ -151,11 +151,12 @@ func addTestTypes() {
&apiservertesting.Simple{}, &apiservertesting.SimpleList{}, &ListOptions{},
&api.DeleteOptions{}, &apiservertesting.SimpleGetOptions{}, &apiservertesting.SimpleRoot{},
&SimpleXGSubresource{})
api.Scheme.AddKnownTypes(testGroupVersion, &api.Pod{})
api.Scheme.AddKnownTypes(testGroupVersion, &v1.Pod{})
api.Scheme.AddKnownTypes(testInternalGroupVersion,
&apiservertesting.Simple{}, &apiservertesting.SimpleList{}, &api.ListOptions{},
&apiservertesting.SimpleGetOptions{}, &apiservertesting.SimpleRoot{},
&SimpleXGSubresource{})
api.Scheme.AddKnownTypes(testInternalGroupVersion, &api.Pod{})
// Register SimpleXGSubresource in both testGroupVersion and testGroup2Version, and also their
// their corresponding internal versions, to verify that the desired group version object is
// served in the tests.
@ -287,7 +288,6 @@ func handleInternal(storage map[string]rest.Storage, admissionControl admission.
group.GroupVersion = grouplessGroupVersion
group.OptionsExternalVersion = &grouplessGroupVersion
group.Serializer = api.Codecs
group.StreamSerializer = api.StreamCodecs
if err := (&group).InstallREST(container); err != nil {
panic(fmt.Sprintf("unable to install container %s: %v", group.GroupVersion, err))
}
@ -300,7 +300,6 @@ func handleInternal(storage map[string]rest.Storage, admissionControl admission.
group.GroupVersion = testGroupVersion
group.OptionsExternalVersion = &testGroupVersion
group.Serializer = api.Codecs
group.StreamSerializer = api.StreamCodecs
if err := (&group).InstallREST(container); err != nil {
panic(fmt.Sprintf("unable to install container %s: %v", group.GroupVersion, err))
}
@ -313,7 +312,6 @@ func handleInternal(storage map[string]rest.Storage, admissionControl admission.
group.GroupVersion = newGroupVersion
group.OptionsExternalVersion = &newGroupVersion
group.Serializer = api.Codecs
group.StreamSerializer = api.StreamCodecs
if err := (&group).InstallREST(container); err != nil {
panic(fmt.Sprintf("unable to install container %s: %v", group.GroupVersion, err))
}
@ -357,6 +355,8 @@ func TestSimpleOptionsSetupRight(t *testing.T) {
}
type SimpleRESTStorage struct {
lock sync.Mutex
errors map[string]error
list []apiservertesting.Simple
item apiservertesting.Simple
@ -519,6 +519,8 @@ func (storage *SimpleRESTStorage) Update(ctx api.Context, obj runtime.Object) (r
// Implement ResourceWatcher.
func (storage *SimpleRESTStorage) Watch(ctx api.Context, options *api.ListOptions) (watch.Interface, error) {
storage.lock.Lock()
defer storage.lock.Unlock()
storage.checkContext(ctx)
storage.requestedLabelSelector = labels.Everything()
if options != nil && options.LabelSelector != nil {
@ -540,6 +542,12 @@ func (storage *SimpleRESTStorage) Watch(ctx api.Context, options *api.ListOption
return storage.fakeWatch, nil
}
func (storage *SimpleRESTStorage) Watcher() *watch.FakeWatcher {
storage.lock.Lock()
defer storage.lock.Unlock()
return storage.fakeWatch
}
// Implement Redirector.
var _ = rest.Redirector(&SimpleRESTStorage{})
@ -1235,8 +1243,9 @@ func TestMetadata(t *testing.T) {
}
}
if matches["text/plain,application/json,application/yaml,application/vnd.kubernetes.protobuf"] == 0 ||
matches["application/json,application/json;stream=watch,application/vnd.kubernetes.protobuf,application/vnd.kubernetes.protobuf;stream=watch"] == 0 ||
matches["application/json,application/yaml,application/vnd.kubernetes.protobuf"] == 0 ||
matches["application/json,application/vnd.kubernetes.protobuf"] == 0 ||
matches["application/json"] == 0 ||
matches["*/*"] == 0 ||
len(matches) != 5 {
t.Errorf("unexpected mime types: %v", matches)
@ -2417,7 +2426,6 @@ func TestUpdateREST(t *testing.T) {
OptionsExternalVersion: &newGroupVersion,
Serializer: api.Codecs,
StreamSerializer: api.StreamCodecs,
ParameterCodec: api.ParameterCodec,
}
}
@ -2502,7 +2510,6 @@ func TestParentResourceIsRequired(t *testing.T) {
OptionsExternalVersion: &newGroupVersion,
Serializer: api.Codecs,
StreamSerializer: api.StreamCodecs,
ParameterCodec: api.ParameterCodec,
}
container := restful.NewContainer()
@ -2534,7 +2541,6 @@ func TestParentResourceIsRequired(t *testing.T) {
OptionsExternalVersion: &newGroupVersion,
Serializer: api.Codecs,
StreamSerializer: api.StreamCodecs,
ParameterCodec: api.ParameterCodec,
}
container = restful.NewContainer()
@ -3247,7 +3253,6 @@ func TestXGSubresource(t *testing.T) {
GroupVersion: testGroupVersion,
OptionsExternalVersion: &testGroupVersion,
Serializer: api.Codecs,
StreamSerializer: api.StreamCodecs,
SubresourceGroupVersionKind: map[string]unversioned.GroupVersionKind{
"simple/subsimple": testGroup2Version.WithKind("SimpleXGSubresource"),

31
pkg/apiserver/negotiate.go
View File

@ -27,32 +27,53 @@ import (
"k8s.io/kubernetes/pkg/runtime"
)
func negotiateOutputSerializer(req *http.Request, ns runtime.NegotiatedSerializer) (runtime.Serializer, string, error) {
func negotiateOutput(req *http.Request, supported []string) (string, map[string]string, error) {
acceptHeader := req.Header.Get("Accept")
supported := ns.SupportedMediaTypes()
if len(acceptHeader) == 0 && len(supported) > 0 {
acceptHeader = supported[0]
}
accept, ok := negotiate(acceptHeader, supported)
if !ok {
return nil, "", errNotAcceptable{supported}
return "", nil, errNotAcceptable{supported}
}
pretty := isPrettyPrint(req)
if _, ok := accept.Params["pretty"]; !ok && pretty {
accept.Params["pretty"] = "1"
}
mediaType := accept.Type
if len(accept.SubType) > 0 {
mediaType += "/" + accept.SubType
}
if s, ok := ns.SerializerForMediaType(mediaType, accept.Params); ok {
return s, mediaType, nil
return mediaType, accept.Params, nil
}
func negotiateOutputSerializer(req *http.Request, ns runtime.NegotiatedSerializer) (runtime.Serializer, string, error) {
supported := ns.SupportedMediaTypes()
mediaType, params, err := negotiateOutput(req, supported)
if err != nil {
return nil, "", err
}
if s, ok := ns.SerializerForMediaType(mediaType, params); ok {
return s, mediaType, nil
}
return nil, "", errNotAcceptable{supported}
}
func negotiateOutputStreamSerializer(req *http.Request, ns runtime.NegotiatedSerializer) (runtime.Serializer, runtime.Framer, string, string, error) {
supported := ns.SupportedMediaTypes()
mediaType, params, err := negotiateOutput(req, supported)
if err != nil {
return nil, nil, "", "", err
}
if s, f, exactMediaType, ok := ns.StreamingSerializerForMediaType(mediaType, params); ok {
return s, f, mediaType, exactMediaType, nil
}
return nil, nil, "", "", errNotAcceptable{supported}
}
func negotiateInputSerializer(req *http.Request, s runtime.NegotiatedSerializer) (runtime.Serializer, error) {
supported := s.SupportedMediaTypes()
mediaType := req.Header.Get("Content-Type")

20
pkg/apiserver/negotiate_test.go
View File

@ -27,15 +27,19 @@ import (
)
type fakeNegotiater struct {
serializer runtime.Serializer
types []string
mediaType string
options map[string]string
serializer, streamSerializer runtime.Serializer
framer runtime.Framer
types, streamTypes []string
mediaType, streamMediaType string
options, streamOptions map[string]string
}
func (n *fakeNegotiater) SupportedMediaTypes() []string {
return n.types
}
func (n *fakeNegotiater) SupportedStreamingMediaTypes() []string {
return n.streamTypes
}
func (n *fakeNegotiater) SerializerForMediaType(mediaType string, options map[string]string) (runtime.Serializer, bool) {
n.mediaType = mediaType
@ -45,6 +49,14 @@ func (n *fakeNegotiater) SerializerForMediaType(mediaType string, options map[st
return n.serializer, n.serializer != nil
}
func (n *fakeNegotiater) StreamingSerializerForMediaType(mediaType string, options map[string]string) (runtime.Serializer, runtime.Framer, string, bool) {
n.streamMediaType = mediaType
if len(options) > 0 {
n.streamOptions = options
}
return n.streamSerializer, n.framer, mediaType, n.streamSerializer != nil
}
func (n *fakeNegotiater) EncoderForVersion(serializer runtime.Serializer, gv unversioned.GroupVersion) runtime.Encoder {
return n.serializer
}

1
pkg/apiserver/resthandler.go
View File

@ -72,7 +72,6 @@ type RequestScope struct {
ContextFunc
Serializer runtime.NegotiatedSerializer
StreamSerializer runtime.NegotiatedSerializer
runtime.ParameterCodec
Creater runtime.ObjectCreater

28
pkg/apiserver/watch.go
View File

@ -69,15 +69,19 @@ type textEncodable interface {
// TODO: the functionality in this method and in WatchServer.Serve is not cleanly decoupled.
func serveWatch(watcher watch.Interface, scope RequestScope, req *restful.Request, res *restful.Response, timeout time.Duration) {
// negotiate for the stream serializer
serializer, mediaType, err := negotiateOutputSerializer(req.Request, scope.StreamSerializer)
serializer, framer, mediaType, exactMediaType, err := negotiateOutputStreamSerializer(req.Request, scope.Serializer)
if err != nil {
scope.err(err, res.ResponseWriter, req.Request)
return
}
encoder := scope.StreamSerializer.EncoderForVersion(serializer, scope.Kind.GroupVersion())
if framer == nil {
scope.err(fmt.Errorf("no framer defined for %q available for embedded encoding", mediaType), res.ResponseWriter, req.Request)
return
}
encoder := scope.Serializer.EncoderForVersion(serializer, scope.Kind.GroupVersion())
useTextFraming := false
if encodable, ok := encoder.(textEncodable); ok && encodable.EncodesAsText() {
if encodable, ok := serializer.(textEncodable); ok && encodable.EncodesAsText() {
useTextFraming = true
}
@ -94,7 +98,8 @@ func serveWatch(watcher watch.Interface, scope RequestScope, req *restful.Reques
scope: scope,
useTextFraming: useTextFraming,
mediaType: mediaType,
mediaType: exactMediaType,
framer: framer,
encoder: encoder,
embeddedEncoder: embeddedEncoder,
fixup: func(obj runtime.Object) {
@ -118,6 +123,8 @@ type WatchServer struct {
useTextFraming bool
// the media type this watch is being served with
mediaType string
// used to frame the watch stream
framer runtime.Framer
// used to encode the watch stream event itself
encoder runtime.Encoder
// used to encode the nested object in the watch stream
@ -153,16 +160,7 @@ func (s *WatchServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
return
}
// get a framed encoder
f, ok := s.encoder.(streaming.Framer)
if !ok {
// programmer error
err := fmt.Errorf("no streaming support is available for media type %q", s.mediaType)
utilruntime.HandleError(err)
s.scope.err(errors.NewBadRequest(err.Error()), w, req)
return
}
framer := f.NewFrameWriter(w)
framer := s.framer.NewFrameWriter(w)
if framer == nil {
// programmer error
err := fmt.Errorf("no stream framing support is available for media type %q", s.mediaType)
@ -208,7 +206,7 @@ func (s *WatchServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
// type
}
if err := e.Encode((*versioned.InternalEvent)(&event)); err != nil {
utilruntime.HandleError(fmt.Errorf("unable to encode watch object: %v", err))
utilruntime.HandleError(fmt.Errorf("unable to encode watch object: %v (%#v)", err, e))
// client disconnect.
return
}

190
pkg/apiserver/watch_test.go
View File

@ -18,6 +18,7 @@ package apiserver
import (
"encoding/json"
"fmt"
"io"
"io/ioutil"
"math/rand"
@ -38,8 +39,11 @@ import (
"k8s.io/kubernetes/pkg/fields"
"k8s.io/kubernetes/pkg/labels"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/runtime/serializer/streaming"
"k8s.io/kubernetes/pkg/util/diff"
"k8s.io/kubernetes/pkg/util/wait"
"k8s.io/kubernetes/pkg/watch"
"k8s.io/kubernetes/pkg/watch/versioned"
)
// watchJSON defines the expected JSON wire equivalent of watch.Event
@ -48,6 +52,19 @@ type watchJSON struct {
Object json.RawMessage `json:"object,omitempty"`
}
// roundTripOrDie round trips an object to get defaults set.
func roundTripOrDie(codec runtime.Codec, object runtime.Object) runtime.Object {
data, err := runtime.Encode(codec, object)
if err != nil {
panic(err)
}
obj, err := runtime.Decode(codec, data)
if err != nil {
panic(err)
}
return obj
}
var watchTestTable = []struct {
t watch.EventType
obj runtime.Object
@ -57,6 +74,15 @@ var watchTestTable = []struct {
{watch.Deleted, &apiservertesting.Simple{ObjectMeta: api.ObjectMeta{Name: "bar"}}},
}
var podWatchTestTable = []struct {
t watch.EventType
obj runtime.Object
}{
{watch.Added, roundTripOrDie(codec, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "foo"}})},
{watch.Modified, roundTripOrDie(codec, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "bar"}})},
{watch.Deleted, roundTripOrDie(codec, &api.Pod{ObjectMeta: api.ObjectMeta{Name: "bar"}})},
}
func TestWatchWebsocket(t *testing.T) {
simpleStorage := &SimpleRESTStorage{}
_ = rest.Watcher(simpleStorage) // Give compile error if this doesn't work.
@ -111,66 +137,160 @@ func TestWatchWebsocket(t *testing.T) {
}
}
func TestWatchHTTP(t *testing.T) {
func TestWatchRead(t *testing.T) {
simpleStorage := &SimpleRESTStorage{}
_ = rest.Watcher(simpleStorage) // Give compile error if this doesn't work.
handler := handle(map[string]rest.Storage{"simples": simpleStorage})
server := httptest.NewServer(handler)
// TODO: Uncomment when fix #19254
// defer server.Close()
client := http.Client{}
dest, _ := url.Parse(server.URL)
dest.Path = "/" + prefix + "/" + testGroupVersion.Group + "/" + testGroupVersion.Version + "/watch/simples"
dest.RawQuery = ""
dest.Path = "/" + prefix + "/" + testGroupVersion.Group + "/" + testGroupVersion.Version + "/simples"
dest.RawQuery = "watch=1"
connectHTTP := func(accept string) (io.ReadCloser, string) {
client := http.Client{}
request, err := http.NewRequest("GET", dest.String(), nil)
if err != nil {
t.Errorf("unexpected error: %v", err)
t.Fatalf("unexpected error: %v", err)
}
request.Header.Add("Accept", accept)
response, err := client.Do(request)
if err != nil {
t.Errorf("unexpected error: %v", err)
t.Fatalf("unexpected error: %v", err)
}
if response.StatusCode != http.StatusOK {
t.Errorf("Unexpected response %#v", response)
t.Fatalf("Unexpected response %#v", response)
}
return response.Body, response.Header.Get("Content-Type")
}
decoder := json.NewDecoder(response.Body)
connectWebSocket := func(accept string) (io.ReadCloser, string) {
dest := *dest
dest.Scheme = "ws" // Required by websocket, though the server never sees it.
config, err := websocket.NewConfig(dest.String(), "http://localhost")
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
config.Header.Add("Accept", accept)
ws, err := websocket.DialConfig(config)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
return ws, "__default__"
}
testCases := []struct {
Accept string
ExpectedContentType string
MediaType string
}{
{
Accept: "application/json",
ExpectedContentType: "application/json",
MediaType: "application/json",
},
// TODO: yaml stream serialization requires that RawExtension.MarshalJSON
// be able to understand nested encoding (since yaml calls json.Marshal
// rather than yaml.Marshal, which results in the raw bytes being in yaml).
// Same problem as thirdparty object.
/*{
Accept: "application/yaml",
ExpectedContentType: "application/yaml;stream=watch",
MediaType: "application/yaml",
},*/
{
Accept: "application/vnd.kubernetes.protobuf",
ExpectedContentType: "application/vnd.kubernetes.protobuf;stream=watch",
MediaType: "application/vnd.kubernetes.protobuf",
},
{
Accept: "application/vnd.kubernetes.protobuf;stream=watch",
ExpectedContentType: "application/vnd.kubernetes.protobuf;stream=watch",
MediaType: "application/vnd.kubernetes.protobuf",
},
}
protocols := []struct {
name string
selfFraming bool
fn func(string) (io.ReadCloser, string)
}{
{name: "http", fn: connectHTTP},
{name: "websocket", selfFraming: true, fn: connectWebSocket},
}
for _, protocol := range protocols {
for _, test := range testCases {
serializer, framer, _, ok := api.Codecs.StreamingSerializerForMediaType(test.MediaType, nil)
if !ok {
t.Fatal(framer)
}
r, contentType := protocol.fn(test.Accept)
defer r.Close()
if contentType != "__default__" && contentType != test.ExpectedContentType {
t.Errorf("Unexpected content type: %#v", contentType)
}
objectSerializer, ok := api.Codecs.SerializerForMediaType(test.MediaType, nil)
if !ok {
t.Fatal(framer)
}
objectCodec := api.Codecs.DecoderToVersion(objectSerializer, testInternalGroupVersion)
var fr io.Reader = r
if !protocol.selfFraming {
fr = framer.NewFrameReader(r)
}
d := streaming.NewDecoder(fr, serializer)
var w *watch.FakeWatcher
for w == nil {
w = simpleStorage.Watcher()
time.Sleep(time.Millisecond)
}
for i, item := range podWatchTestTable {
action, object := item.t, item.obj
name := fmt.Sprintf("%s-%s-%d", protocol.name, test.MediaType, i)
for i, item := range watchTestTable {
// Send
simpleStorage.fakeWatch.Action(item.t, item.obj)
w.Action(action, object)
// Test receive
var got watchJSON
err := decoder.Decode(&got)
var got versioned.Event
_, _, err := d.Decode(nil, &got)
if err != nil {
t.Fatalf("%d: Unexpected error: %v", i, err)
t.Fatalf("%s: Unexpected error: %v", name, err)
}
if got.Type != item.t {
t.Errorf("%d: Unexpected type: %v", i, got.Type)
if got.Type != string(action) {
t.Errorf("%s: Unexpected type: %v", name, got.Type)
}
t.Logf("obj: %v", string(got.Object))
gotObj, err := runtime.Decode(codec, got.Object)
if err != nil {
t.Fatalf("Decode error: %v", err)
}
t.Logf("obj: %#v", gotObj)
if _, err := api.GetReference(gotObj); err != nil {
t.Errorf("Unable to construct reference: %v", err)
}
if e, a := item.obj, gotObj; !reflect.DeepEqual(e, a) {
t.Errorf("Expected %#v, got %#v", e, a)
}
}
simpleStorage.fakeWatch.Stop()
var got watchJSON
err = decoder.Decode(&got)
gotObj, err := runtime.Decode(objectCodec, got.Object.Raw)
if err != nil {
t.Fatalf("%s: Decode error: %v", name, err)
}
if _, err := api.GetReference(gotObj); err != nil {
t.Errorf("%s: Unable to construct reference: %v", name, err)
}
if e, a := object, gotObj; !api.Semantic.DeepEqual(e, a) {
t.Errorf("%s: different: %s", name, diff.ObjectDiff(e, a))
}
}
w.Stop()
var got versioned.Event
_, _, err := d.Decode(nil, &got)
if err == nil {
t.Errorf("Unexpected non-error")
}
r.Close()
}
}
}
func TestWatchHTTPAccept(t *testing.T) {
@ -189,7 +309,7 @@ func TestWatchHTTPAccept(t *testing.T) {
t.Errorf("unexpected error: %v", err)
}
request.Header.Set("Accept", "application/yaml")
request.Header.Set("Accept", "application/XYZ")
response, err := client.Do(request)
if err != nil {
t.Errorf("unexpected error: %v", err)
@ -379,11 +499,17 @@ func TestWatchHTTPTimeout(t *testing.T) {
timeoutCh := make(chan time.Time)
done := make(chan struct{})
_, framer, _, ok := api.Codecs.StreamingSerializerForMediaType("application/json", nil)
if !ok {
t.Fatal(framer)
}
// Setup a new watchserver
watchServer := &WatchServer{
watching: watcher,
mediaType: "testcase/json",
framer: framer,
encoder: newCodec,
embeddedEncoder: newCodec,

3
pkg/genericapiserver/genericapiserver.go
View File

@ -82,8 +82,6 @@ type APIGroupInfo struct {
Scheme *runtime.Scheme
// NegotiatedSerializer controls how this group encodes and decodes data
NegotiatedSerializer runtime.NegotiatedSerializer
// NegotiatedStreamSerializer controls how streaming responses are encoded and decoded.
NegotiatedStreamSerializer runtime.NegotiatedSerializer
// ParameterCodec performs conversions for query parameters passed to API calls
ParameterCodec runtime.ParameterCodec
@ -824,7 +822,6 @@ func (s *GenericAPIServer) getAPIGroupVersion(apiGroupInfo *APIGroupInfo, groupV
version.Storage = storage
version.ParameterCodec = apiGroupInfo.ParameterCodec
version.Serializer = apiGroupInfo.NegotiatedSerializer
version.StreamSerializer = apiGroupInfo.NegotiatedStreamSerializer
version.Creater = apiGroupInfo.Scheme
version.Convertor = apiGroupInfo.Scheme
version.Typer = apiGroupInfo.Scheme

2
pkg/genericapiserver/genericapiserver_test.go
View File

@ -129,7 +129,6 @@ func TestInstallAPIGroups(t *testing.T) {
IsLegacyGroup: true,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
NegotiatedStreamSerializer: api.StreamCodecs,
},
{
// extensions group version
@ -138,7 +137,6 @@ func TestInstallAPIGroups(t *testing.T) {
OptionsExternalVersion: &apiGroupMeta.GroupVersion,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
NegotiatedStreamSerializer: api.StreamCodecs,
},
}
s.InstallAPIGroups(apiGroupsInfo)

6
pkg/master/master.go
View File

@ -207,7 +207,6 @@ func (m *Master) InstallAPIs(c *Config) {
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
NegotiatedStreamSerializer: api.StreamCodecs,
}
if autoscalingGroupVersion := (unversioned.GroupVersion{Group: "autoscaling", Version: "v1"}); registered.IsEnabledVersion(autoscalingGroupVersion) {
apiGroupInfo.SubresourceGroupVersionKind = map[string]unversioned.GroupVersionKind{
@ -265,7 +264,6 @@ func (m *Master) InstallAPIs(c *Config) {
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
NegotiatedStreamSerializer: api.StreamCodecs,
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
@ -298,7 +296,6 @@ func (m *Master) InstallAPIs(c *Config) {
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
NegotiatedStreamSerializer: api.StreamCodecs,
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
@ -331,7 +328,6 @@ func (m *Master) InstallAPIs(c *Config) {
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
NegotiatedStreamSerializer: api.StreamCodecs,
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
@ -363,7 +359,6 @@ func (m *Master) InstallAPIs(c *Config) {
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
NegotiatedStreamSerializer: api.StreamCodecs,
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
@ -715,7 +710,6 @@ func (m *Master) thirdpartyapi(group, kind, version string) *apiserver.APIGroupV
OptionsExternalVersion: &optionsExternalVersion,
Serializer: thirdpartyresourcedata.NewNegotiatedSerializer(api.Codecs, kind, externalVersion, internalVersion),
StreamSerializer: thirdpartyresourcedata.NewNegotiatedSerializer(api.StreamCodecs, kind, externalVersion, internalVersion),
ParameterCodec: thirdpartyresourcedata.NewThirdPartyParameterCodec(api.ParameterCodec),
Context: m.RequestContextMapper,

24
pkg/registry/thirdpartyresourcedata/codec.go
View File

@ -33,7 +33,6 @@ import (
"k8s.io/kubernetes/pkg/apis/extensions"
"k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/runtime/serializer/streaming"
)
type thirdPartyObjectConverter struct {
@ -203,10 +202,7 @@ type thirdPartyResourceDataCodec struct {
kind string
}
var (
_ runtime.Codec = &thirdPartyResourceDataCodec{}
_ streaming.Framer = &thirdPartyResourceDataCodec{}
)
var _ runtime.Codec = &thirdPartyResourceDataCodec{}
func NewCodec(codec runtime.Codec, kind string) runtime.Codec {
return &thirdPartyResourceDataCodec{codec, kind}
@ -416,24 +412,6 @@ func (t *thirdPartyResourceDataCodec) EncodeToStream(obj runtime.Object, stream
}
}
// NewFrameWriter calls into the nested encoder to expose its framing
func (c *thirdPartyResourceDataCodec) NewFrameWriter(w io.Writer) io.Writer {
f, ok := c.delegate.(streaming.Framer)
if !ok {
return nil
}
return f.NewFrameWriter(w)
}
// NewFrameReader calls into the nested decoder to expose its framing
func (c *thirdPartyResourceDataCodec) NewFrameReader(r io.Reader) io.Reader {
f, ok := c.delegate.(streaming.Framer)
if !ok {
return nil
}
return f.NewFrameReader(r)
}
func NewObjectCreator(group, version string, delegate runtime.ObjectCreater) runtime.ObjectCreater {
return &thirdPartyResourceDataCreator{group, version, delegate}
}

10
pkg/runtime/helper.go
View File

@ -18,6 +18,7 @@ package runtime
import (
"fmt"
"io"
"reflect"
"k8s.io/kubernetes/pkg/api/unversioned"
@ -179,3 +180,12 @@ func SetZeroValue(objPtr Object) error {
v.Set(reflect.Zero(v.Type()))
return nil
}
// DefaultFramer is valid for any stream that can read objects serially without
// any separation in the stream.
var DefaultFramer = defaultFramer{}
type defaultFramer struct{}
func (defaultFramer) NewFrameReader(r io.Reader) io.Reader { return r }
func (defaultFramer) NewFrameWriter(w io.Writer) io.Writer { return w }

25
pkg/runtime/interfaces.go
View File

@ -80,12 +80,37 @@ type ParameterCodec interface {
EncodeParameters(obj Object, to unversioned.GroupVersion) (url.Values, error)
}
// Framer is a factory for creating readers and writers that obey a particular framing pattern.
type Framer interface {
NewFrameReader(r io.Reader) io.Reader
NewFrameWriter(w io.Writer) io.Writer
}
// NegotiatedSerializer is an interface used for obtaining encoders, decoders, and serializers
// for multiple supported media types.
type NegotiatedSerializer interface {
// SupportedMediaTypes is the media types supported for reading and writing single objects.
SupportedMediaTypes() []string
// SerializerForMediaType returns a serializer for the provided media type. Options is a set of
// parameters applied to the media type that may modify the resulting output.
SerializerForMediaType(mediaType string, options map[string]string) (Serializer, bool)
// SupportedStreamingMediaTypes returns the media types of the supported streaming serializers.
// Streaming serializers control how multiple objects are written to a stream output.
SupportedStreamingMediaTypes() []string
// StreamingSerializerForMediaType returns a serializer for the provided media type that supports
// reading and writing multiple objects to a stream. It returns a framer and serializer, or an
// error if no such serializer can be created. Options is a set of parameters applied to the
// media type that may modify the resulting output.
StreamingSerializerForMediaType(mediaType string, options map[string]string) (Serializer, Framer, string, bool)
// EncoderForVersion returns an encoder that ensures objects being written to the provided
// serializer are in the provided group version.
// TODO: take multiple group versions
EncoderForVersion(serializer Serializer, gv unversioned.GroupVersion) Encoder
// DecoderForVersion returns a decoder that ensures objects being read by the provided
// serializer are in the provided group version by default.
// TODO: take multiple group versions
DecoderToVersion(serializer Serializer, gv unversioned.GroupVersion) Decoder
}

104
pkg/runtime/serializer/codec_factory.go
View File

@ -17,13 +17,10 @@ limitations under the License.
package serializer
import (
"io/ioutil"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/runtime/serializer/json"
"k8s.io/kubernetes/pkg/runtime/serializer/recognizer"
"k8s.io/kubernetes/pkg/runtime/serializer/streaming"
"k8s.io/kubernetes/pkg/runtime/serializer/versioning"
)
@ -44,17 +41,25 @@ type serializerType struct {
// be expected to pass into or a gvk to Decode, since no type information will be available on
// the object itself.
RawSerializer runtime.Serializer
// Specialize gives the type the opportunity to return a different serializer implementation if
// the content type contains alternate operations. Here it is used to implement "pretty" as an
// option to application/json, but could also be used to allow serializers to perform type
// defaulting or alter output.
Specialize func(map[string]string) (runtime.Serializer, bool)
AcceptStreamContentTypes []string
StreamContentType string
Framer runtime.Framer
StreamSerializer runtime.Serializer
StreamSpecialize func(map[string]string) (runtime.Serializer, bool)
}
func newSerializersForScheme(scheme *runtime.Scheme, mf json.MetaFactory) []serializerType {
jsonSerializer := json.NewSerializer(mf, scheme, runtime.ObjectTyperToTyper(scheme), false)
jsonPrettySerializer := json.NewSerializer(mf, scheme, runtime.ObjectTyperToTyper(scheme), true)
yamlSerializer := json.NewYAMLSerializer(mf, scheme, runtime.ObjectTyperToTyper(scheme))
serializers := []serializerType{
{
AcceptContentTypes: []string{"application/json"},
@ -62,15 +67,26 @@ func newSerializersForScheme(scheme *runtime.Scheme, mf json.MetaFactory) []seri
FileExtensions: []string{"json"},
Serializer: jsonSerializer,
PrettySerializer: jsonPrettySerializer,
AcceptStreamContentTypes: []string{"application/json", "application/json;stream=watch"},
StreamContentType: "application/json",
Framer: json.Framer,
StreamSerializer: jsonSerializer,
},
}
yamlSerializer := json.NewYAMLSerializer(mf, scheme, runtime.ObjectTyperToTyper(scheme))
serializers = append(serializers, serializerType{
{
AcceptContentTypes: []string{"application/yaml"},
ContentType: "application/yaml",
FileExtensions: []string{"yaml"},
Serializer: yamlSerializer,
})
// TODO: requires runtime.RawExtension to properly distinguish when the nested content is
// yaml, because the yaml encoder invokes MarshalJSON first
//AcceptStreamContentTypes: []string{"application/yaml", "application/yaml;stream=watch"},
//StreamContentType: "application/yaml;stream=watch",
//Framer: json.YAMLFramer,
//StreamSerializer: yamlSerializer,
},
}
for _, fn := range serializerExtensions {
if serializer, ok := fn(scheme); ok {
@ -87,6 +103,7 @@ type CodecFactory struct {
serializers []serializerType
universal runtime.Decoder
accepts []string
streamingAccepts []string
legacySerializer runtime.Serializer
}
@ -102,40 +119,12 @@ func NewCodecFactory(scheme *runtime.Scheme) CodecFactory {
return newCodecFactory(scheme, serializers)
}
// NewStreamingCodecFactory returns serializers that support the streaming.Serializer interface.
// TODO: determine whether this returns a streaming.Serializer AND runtime.Serializer, or whether
// streaming should be added to the CodecFactory interface.
func NewStreamingCodecFactory(scheme *runtime.Scheme) CodecFactory {
return newStreamingCodecFactory(scheme, json.DefaultMetaFactory)
}
// newStreamingCodecFactory handles providing streaming codecs
func newStreamingCodecFactory(scheme *runtime.Scheme, mf json.MetaFactory) CodecFactory {
serializers := newSerializersForScheme(scheme, mf)
streamers := []serializerType{}
for i := range serializers {
if serializers[i].RawSerializer != nil {
serializers[i].Serializer = serializers[i].RawSerializer
}
if s, ok := serializers[i].Serializer.(streaming.Framer); ok {
// TODO: more elegant option?
// TODO: add tests and assertions for which serializers should
// have framers. We need to answer whether all Serializers
// are streaming serializers or not.
if s.NewFrameWriter(ioutil.Discard) == nil {
continue
}
streamers = append(streamers, serializers[i])
}
}
return newCodecFactory(scheme, streamers)
}
// newCodecFactory is a helper for testing that allows a different metafactory to be specified.
func newCodecFactory(scheme *runtime.Scheme, serializers []serializerType) CodecFactory {
decoders := make([]runtime.Decoder, 0, len(serializers))
accepts := []string{}
alreadyAccepted := make(map[string]struct{})
var legacySerializer runtime.Serializer
for _, d := range serializers {
decoders = append(decoders, d.Serializer)
@ -153,11 +142,29 @@ func newCodecFactory(scheme *runtime.Scheme, serializers []serializerType) Codec
if legacySerializer == nil {
legacySerializer = serializers[0].Serializer
}
streamAccepts := []string{}
alreadyAccepted = make(map[string]struct{})
for _, d := range serializers {
if len(d.StreamContentType) == 0 {
continue
}
for _, mediaType := range d.AcceptStreamContentTypes {
if _, ok := alreadyAccepted[mediaType]; ok {
continue
}
alreadyAccepted[mediaType] = struct{}{}
streamAccepts = append(streamAccepts, mediaType)
}
}
return CodecFactory{
scheme: scheme,
serializers: serializers,
universal: recognizer.NewDecoder(decoders...),
accepts: accepts,
streamingAccepts: streamAccepts,
legacySerializer: legacySerializer,
}
@ -170,6 +177,11 @@ func (f CodecFactory) SupportedMediaTypes() []string {
return f.accepts
}
// SupportedStreamingMediaTypes returns the RFC2046 media types that this factory has stream serializers for.
func (f CodecFactory) SupportedStreamingMediaTypes() []string {
return f.streamingAccepts
}
// LegacyCodec encodes output to a given API version, and decodes output into the internal form from
// any recognized source. The returned codec will always encode output to JSON.
//
@ -234,6 +246,24 @@ func (f CodecFactory) SerializerForMediaType(mediaType string, options map[strin
return nil, false
}
// StreamingSerializerForMediaType returns a serializer that matches the provided RFC2046 mediaType, or false if no such
// serializer exists
func (f CodecFactory) StreamingSerializerForMediaType(mediaType string, options map[string]string) (runtime.Serializer, runtime.Framer, string, bool) {
for _, s := range f.serializers {
for _, accepted := range s.AcceptStreamContentTypes {
if accepted == mediaType {
if s.StreamSpecialize != nil && len(options) > 0 {
serializer, ok := s.StreamSpecialize(options)
// TODO: have StreamSpecialize return exact content type
return serializer, s.Framer, s.StreamContentType, ok
}
return s.StreamSerializer, s.Framer, s.StreamContentType, true
}
}
}
return nil, nil, "", false
}
// SerializerForFileExtension returns a serializer for the provided extension, or false if no serializer matches.
func (f CodecFactory) SerializerForFileExtension(extension string) (runtime.Serializer, bool) {
for _, s := range f.serializers {

7
pkg/runtime/serializer/deep_copy_generated.go
View File

@ -62,6 +62,13 @@ func DeepCopy_serializer_CodecFactory(in CodecFactory, out *CodecFactory, c *con
} else {
out.accepts = nil
}
if in.streamingAccepts != nil {
in, out := in.streamingAccepts, &out.streamingAccepts
*out = make([]string, len(in))
copy(*out, in)
} else {
out.streamingAccepts = nil
}
if in.legacySerializer == nil {
out.legacySerializer = nil
} else if newVal, err := c.DeepCopy(in.legacySerializer); err != nil {

70
pkg/runtime/serializer/json/json.go
View File

@ -31,7 +31,7 @@ import (
// NewSerializer creates a JSON serializer that handles encoding versioned objects into the proper JSON form. If typer
// is not nil, the object has the group, version, and kind fields set.
func NewSerializer(meta MetaFactory, creater runtime.ObjectCreater, typer runtime.Typer, pretty bool) runtime.Serializer {
func NewSerializer(meta MetaFactory, creater runtime.ObjectCreater, typer runtime.Typer, pretty bool) *Serializer {
return &Serializer{
meta: meta,
creater: creater,
@ -44,7 +44,7 @@ func NewSerializer(meta MetaFactory, creater runtime.ObjectCreater, typer runtim
// NewYAMLSerializer creates a YAML serializer that handles encoding versioned objects into the proper YAML form. If typer
// is not nil, the object has the group, version, and kind fields set. This serializer supports only the subset of YAML that
// matches JSON, and will error if constructs are used that do not serialize to JSON.
func NewYAMLSerializer(meta MetaFactory, creater runtime.ObjectCreater, typer runtime.Typer) runtime.Serializer {
func NewYAMLSerializer(meta MetaFactory, creater runtime.ObjectCreater, typer runtime.Typer) *Serializer {
return &Serializer{
meta: meta,
creater: creater,
@ -194,26 +194,6 @@ func (s *Serializer) RecognizesData(peek io.Reader) (bool, error) {
return ok, nil
}
// NewFrameWriter implements stream framing for this serializer
func (s *Serializer) NewFrameWriter(w io.Writer) io.Writer {
if s.yaml {
// TODO: needs document framing
return nil
}
// we can write JSON objects directly to the writer, because they are self-framing
return w
}
// NewFrameReader implements stream framing for this serializer
func (s *Serializer) NewFrameReader(r io.Reader) io.Reader {
if s.yaml {
// TODO: needs document framing
return nil
}
// we need to extract the JSON chunks of data to pass to Decode()
return framer.NewJSONFramedReader(r)
}
// EncodesAsText returns true because both JSON and YAML are considered textual representations
// of data. This is used to determine whether the serialized object should be transmitted over
// a WebSocket Text or Binary frame. This must remain true for legacy compatibility with v1.1
@ -221,3 +201,49 @@ func (s *Serializer) NewFrameReader(r io.Reader) io.Reader {
func (s *Serializer) EncodesAsText() bool {
return true
}
// Framer is the default JSON framing behavior, with newlines delimiting individual objects.
var Framer = jsonFramer{}
type jsonFramer struct{}
// NewFrameWriter implements stream framing for this serializer
func (jsonFramer) NewFrameWriter(w io.Writer) io.Writer {
// we can write JSON objects directly to the writer, because they are self-framing
return w
}
// NewFrameReader implements stream framing for this serializer
func (jsonFramer) NewFrameReader(r io.Reader) io.Reader {
// we need to extract the JSON chunks of data to pass to Decode()
return framer.NewJSONFramedReader(r)
}
// Framer is the default JSON framing behavior, with newlines delimiting individual objects.
var YAMLFramer = yamlFramer{}
type yamlFramer struct{}
// NewFrameWriter implements stream framing for this serializer
func (yamlFramer) NewFrameWriter(w io.Writer) io.Writer {
return yamlFrameWriter{w}
}
// NewFrameReader implements stream framing for this serializer
func (yamlFramer) NewFrameReader(r io.Reader) io.Reader {
// extract the YAML document chunks directly
return utilyaml.NewDocumentDecoder(r)
}
type yamlFrameWriter struct {
w io.Writer
}
// Write separates each document with the YAML document separator (`---` followed by line
// break). Writers must write well formed YAML documents (include a final line break).
func (w yamlFrameWriter) Write(data []byte) (n int, err error) {
if _, err := w.w.Write([]byte("---\n")); err != nil {
return 0, err
}
return w.w.Write(data)
}

18
pkg/runtime/serializer/protobuf/protobuf.go
View File

@ -240,16 +240,6 @@ func (s *Serializer) RecognizesData(peek io.Reader) (bool, error) {
return bytes.Equal(s.prefix, prefix), nil
}
// NewFrameWriter implements stream framing for this serializer
func (s *Serializer) NewFrameWriter(w io.Writer) io.Writer {
return framer.NewLengthDelimitedFrameWriter(w)
}
// NewFrameReader implements stream framing for this serializer
func (s *Serializer) NewFrameReader(r io.Reader) io.Reader {
return framer.NewLengthDelimitedFrameReader(r)
}
// copyKindDefaults defaults dst to the value in src if dst does not have a value set.
func copyKindDefaults(dst, src *unversioned.GroupVersionKind) {
if src == nil {
@ -435,12 +425,16 @@ func (s *RawSerializer) RecognizesData(peek io.Reader) (bool, error) {
return false, nil
}
var LengthDelimitedFramer = lengthDelimitedFramer{}
type lengthDelimitedFramer struct{}
// NewFrameWriter implements stream framing for this serializer
func (s *RawSerializer) NewFrameWriter(w io.Writer) io.Writer {
func (lengthDelimitedFramer) NewFrameWriter(w io.Writer) io.Writer {
return framer.NewLengthDelimitedFrameWriter(w)
}
// NewFrameReader implements stream framing for this serializer
func (s *RawSerializer) NewFrameReader(r io.Reader) io.Reader {
func (lengthDelimitedFramer) NewFrameReader(r io.Reader) io.Reader {
return framer.NewLengthDelimitedFrameReader(r)
}

10
pkg/runtime/serializer/protobuf_extension.go
View File

@ -21,11 +21,14 @@ import (
"k8s.io/kubernetes/pkg/runtime/serializer/protobuf"
)
const (
// contentTypeProtobuf is the protobuf type exposed for Kubernetes. It is private to prevent others from
// depending on it unintentionally.
// TODO: potentially move to pkg/api (since it's part of the Kube public API) and pass it in to the
// CodecFactory on initialization.
const contentTypeProtobuf = "application/vnd.kubernetes.protobuf"
contentTypeProtobuf = "application/vnd.kubernetes.protobuf"
contentTypeProtobufWatch = contentTypeProtobuf + ";stream=watch"
)
func protobufSerializer(scheme *runtime.Scheme) (serializerType, bool) {
serializer := protobuf.NewSerializer(scheme, runtime.ObjectTyperToTyper(scheme), contentTypeProtobuf)
@ -36,6 +39,11 @@ func protobufSerializer(scheme *runtime.Scheme) (serializerType, bool) {
FileExtensions: []string{"pb"},
Serializer: serializer,
RawSerializer: raw,
AcceptStreamContentTypes: []string{contentTypeProtobuf, contentTypeProtobufWatch},
StreamContentType: contentTypeProtobufWatch,
Framer: protobuf.LengthDelimitedFramer,
StreamSerializer: raw,
}, true
}

6
pkg/runtime/serializer/streaming/streaming.go
View File

@ -27,12 +27,6 @@ import (
"k8s.io/kubernetes/pkg/runtime"
)
// Framer is a factory for creating readers and writers that obey a particular framing pattern.
type Framer interface {
NewFrameReader(r io.Reader) io.Reader
NewFrameWriter(w io.Writer) io.Writer
}
// Encoder is a runtime.Encoder on a stream.
type Encoder interface {
// Encode will write the provided object to the stream or return an error. It obeys the same

19
pkg/runtime/serializer/versioning/versioning.go
View File

@ -22,7 +22,6 @@ import (
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/runtime/serializer/streaming"
)
// EnableCrossGroupDecoding modifies the given decoder in place, if it is a codec
@ -278,24 +277,6 @@ func (c *codec) EncodeToStream(obj runtime.Object, w io.Writer, overrides ...unv
return c.encoder.EncodeToStream(obj, w, overrides...)
}
// NewFrameWriter calls into the nested encoder to expose its framing
func (c *codec) NewFrameWriter(w io.Writer) io.Writer {
f, ok := c.encoder.(streaming.Framer)
if !ok {
return nil
}
return f.NewFrameWriter(w)
}
// NewFrameReader calls into the nested decoder to expose its framing
func (c *codec) NewFrameReader(r io.Reader) io.Reader {
f, ok := c.decoder.(streaming.Framer)
if !ok {
return nil
}
return f.NewFrameReader(r)
}
// promoteOrPrependGroupVersion finds the group version in the provided group versions that has the same group as target.
// If the group is found the returned array will have that group version in the first position - if the group is not found
// the returned array will have target in the first position.

52
pkg/util/yaml/decoder.go
View File

@ -75,6 +75,58 @@ func (d *YAMLToJSONDecoder) Decode(into interface{}) error {
return err
}
// YAMLDecoder reads chunks of objects and returns ErrShortBuffer if
// the data is not sufficient.
type YAMLDecoder struct {
scanner *bufio.Scanner
remaining []byte
}
// NewDocumentDecoder decodes YAML documents from the provided
// stream in chunks by converting each document (as defined by
// the YAML spec) into its own chunk. io.ErrShortBuffer will be
// returned if the entire buffer could not be read to assist
// the caller in framing the chunk.
func NewDocumentDecoder(r io.Reader) io.Reader {
scanner := bufio.NewScanner(r)
scanner.Split(splitYAMLDocument)
return &YAMLDecoder{
scanner: scanner,
}
}
// Read reads the previous slice into the buffer, or attempts to read
// the next chunk.
// TODO: switch to readline approach.
func (d *YAMLDecoder) Read(data []byte) (n int, err error) {
left := len(d.remaining)
if left == 0 {
// return the next chunk from the stream
if !d.scanner.Scan() {
err := d.scanner.Err()
if err == nil {
err = io.EOF
}
return 0, err
}
out := d.scanner.Bytes()
d.remaining = out
left = len(out)
}
// fits within data
if left <= len(data) {
copy(data, d.remaining)
d.remaining = nil
return len(d.remaining), nil
}
// caller will need to reread
copy(data, d.remaining[:left])
d.remaining = d.remaining[left:]
return len(data), io.ErrShortBuffer
}
const yamlSeparator = "\n---"
// splitYAMLDocument is a bufio.SplitFunc for splitting YAML streams into individual documents.

8
pkg/watch/watch.go
View File

@ -99,6 +99,14 @@ func (f *FakeWatcher) Stop() {
}
}
// Reset prepares the watcher to be reused.
func (f *FakeWatcher) Reset() {
f.Lock()
defer f.Unlock()
f.Stopped = false
f.result = make(chan Event)
}
func (f *FakeWatcher) ResultChan() <-chan Event {
return f.result
}

6
test/integration/framework/serializer.go
View File

@ -49,6 +49,12 @@ func (s *wrappedSerializer) SerializerForMediaType(mediaType string, options map
return s.serializer, true
}
func (s *wrappedSerializer) SupportedStreamingMediaTypes() []string {
return nil
}
func (s *wrappedSerializer) StreamingSerializerForMediaType(mediaType string, options map[string]string) (runtime.Serializer, runtime.Framer, string, bool) {
return nil, nil, "", false
}
func (s *wrappedSerializer) EncoderForVersion(serializer runtime.Serializer, gv unversioned.GroupVersion) runtime.Encoder {
return versioning.NewCodec(s.serializer, s.serializer, s.scheme, s.scheme, s.scheme, runtime.ObjectTyperToTyper(s.scheme), []unversioned.GroupVersion{gv}, nil)