create a negotiating serializer that wraps a single serializer

test/integration/framework/serializer.go

@@ -0,0 +1,57 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package framework
+
+import (
+	"k8s.io/kubernetes/pkg/api/unversioned"
+	"k8s.io/kubernetes/pkg/runtime"
+	"k8s.io/kubernetes/pkg/runtime/serializer/versioning"
+)
+
+// NewSingleContentTypeSerializer wraps a serializer in a NegotiatedSerializer that handles one content type
+func NewSingleContentTypeSerializer(scheme *runtime.Scheme, serializer runtime.Serializer, contentType string) runtime.NegotiatedSerializer {
+	return &wrappedSerializer{
+		scheme:      scheme,
+		serializer:  serializer,
+		contentType: contentType,
+	}
+}
+
+type wrappedSerializer struct {
+	scheme      *runtime.Scheme
+	serializer  runtime.Serializer
+	contentType string
+}
+
+func (s *wrappedSerializer) SupportedMediaTypes() []string {
+	return []string{s.contentType}
+}
+func (s *wrappedSerializer) SerializerForMediaType(mediaType string, options map[string]string) (runtime.Serializer, bool) {
+	if mediaType != s.contentType {
+		return nil, false
+	}
+
+	return s.serializer, true
+}
+
+func (s *wrappedSerializer) EncoderForVersion(serializer runtime.Serializer, gv unversioned.GroupVersion) runtime.Encoder {
+	return versioning.NewCodec(s.serializer, s.scheme, s.scheme, s.scheme, runtime.ObjectTyperToTyper(s.scheme), []unversioned.GroupVersion{gv}, nil)
+}
+
+func (s *wrappedSerializer) DecoderToVersion(serializer runtime.Serializer, gv unversioned.GroupVersion) runtime.Decoder {
+	return versioning.NewCodec(s.serializer, s.scheme, s.scheme, s.scheme, runtime.ObjectTyperToTyper(s.scheme), nil, []unversioned.GroupVersion{gv})
+}