handle unversioned objects for encoding for CRs

pkg/master/thirdparty/thirdparty.go

@@ -261,7 +261,7 @@ func (m *ThirdPartyResourceServer) migrateThirdPartyResourceData(gvk schema.Grou
 		schema.GroupResource{Group: crd.Spec.Group, Resource: crd.Spec.Names.Plural},
 		schema.GroupVersionKind{Group: crd.Spec.Group, Version: crd.Spec.Version, Kind: crd.Spec.Names.ListKind},
 		apiextensionsserver.UnstructuredCopier{},
-		customresource.NewStrategy(discoveryclient.NewUnstructuredObjectTyper(nil), true),
+		customresource.NewStrategy(discoveryclient.NewUnstructuredObjectTyper(nil), true, gvk),
 		m.crdRESTOptionsGetter,
 	)
 

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/BUILD

@@ -42,6 +42,7 @@ go_library(
         "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/runtime/serializer:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/runtime/serializer/json:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/serializer/versioning:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/types:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/apiserver.go

@@ -56,6 +56,17 @@ var (
 	registry             = registered.NewOrDie("")
 	Scheme               = runtime.NewScheme()
 	Codecs               = serializer.NewCodecFactory(Scheme)
+
+	// if you modify this, make sure you update the crEncoder
+	unversionedVersion = schema.GroupVersion{Group: "", Version: "v1"}
+	unversionedTypes   = []runtime.Object{
+		&metav1.Status{},
+		&metav1.WatchEvent{},
+		&metav1.APIVersions{},
+		&metav1.APIGroupList{},
+		&metav1.APIGroup{},
+		&metav1.APIResourceList{},
+	}
 )
 
 func init() {
@@ -64,14 +75,7 @@ func init() {
 	// we need to add the options to empty v1
 	metav1.AddToGroupVersion(Scheme, schema.GroupVersion{Group: "", Version: "v1"})
 
-	unversioned := schema.GroupVersion{Group: "", Version: "v1"}
-	Scheme.AddUnversionedTypes(unversioned,
-		&metav1.Status{},
-		&metav1.APIVersions{},
-		&metav1.APIGroupList{},
-		&metav1.APIGroup{},
-		&metav1.APIResourceList{},
-	)
+	Scheme.AddUnversionedTypes(unversionedVersion, unversionedTypes...)
 }
 
 type Config struct {

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/customresource_handler.go

@@ -19,6 +19,7 @@ package apiserver
 import (
 	"bytes"
 	"fmt"
+	"io"
 	"net/http"
 	"path"
 	"sync"
@@ -33,6 +34,7 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/runtime/serializer/json"
+	"k8s.io/apimachinery/pkg/runtime/serializer/versioning"
 	"k8s.io/apimachinery/pkg/types"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	"k8s.io/apiserver/pkg/admission"
@@ -358,13 +360,36 @@ func (s UnstructuredNegotiatedSerializer) SupportedMediaTypes() []runtime.Serial
 }
 
 func (s UnstructuredNegotiatedSerializer) EncoderForVersion(serializer runtime.Encoder, gv runtime.GroupVersioner) runtime.Encoder {
-	return unstructured.UnstructuredJSONScheme
+	return versioning.NewDefaultingCodecForScheme(Scheme, crEncoderInstance, nil, gv, nil)
 }
 
 func (s UnstructuredNegotiatedSerializer) DecoderToVersion(serializer runtime.Decoder, gv runtime.GroupVersioner) runtime.Decoder {
 	return unstructured.UnstructuredJSONScheme
 }
 
+var crEncoderInstance = crEncoder{}
+
+// crEncoder *usually* encodes using the unstructured.UnstructuredJSONScheme, but if the type is Status or WatchEvent
+// it will serialize them out using the converting codec.
+type crEncoder struct{}
+
+func (crEncoder) Encode(obj runtime.Object, w io.Writer) error {
+	switch t := obj.(type) {
+	case *metav1.Status, *metav1.WatchEvent:
+		for _, info := range Codecs.SupportedMediaTypes() {
+			// we are always json
+			if info.MediaType == "application/json" {
+				return info.Serializer.Encode(obj, w)
+			}
+		}
+
+		return fmt.Errorf("unable to find json serializer for %T", t)
+
+	default:
+		return unstructured.UnstructuredJSONScheme.Encode(obj, w)
+	}
+}
+
 type UnstructuredCreator struct{}
 
 func (UnstructuredCreator) New(kind schema.GroupVersionKind) (runtime.Object, error) {

staging/src/k8s.io/apiextensions-apiserver/test/integration/BUILD

@@ -13,6 +13,7 @@ go_test(
         "basic_test.go",
         "finalization_test.go",
         "registration_test.go",
+        "validation_test.go",
     ],
     tags = [
         "automanaged",

staging/src/k8s.io/apiextensions-apiserver/test/integration/validation_test.go

+/*
+Copyright 2017 The Kubernetes Authors.
+
+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 integration
+
+import (
+	"strings"
+	"testing"
+
+	apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
+	"k8s.io/apiextensions-apiserver/test/integration/testserver"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+)
+
+func TestForProperValidationErrors(t *testing.T) {
+	stopCh, apiExtensionClient, clientPool, err := testserver.StartDefaultServer()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer close(stopCh)
+
+	noxuDefinition := testserver.NewNoxuCustomResourceDefinition(apiextensionsv1beta1.NamespaceScoped)
+	noxuVersionClient, err := testserver.CreateNewCustomResourceDefinition(noxuDefinition, apiExtensionClient, clientPool)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	ns := "not-the-default"
+	noxuResourceClient := NewNamespacedCustomResourceClient(ns, noxuVersionClient, noxuDefinition)
+
+	tests := []struct {
+		name          string
+		instanceFn    func() *unstructured.Unstructured
+		expectedError string
+	}{
+		{
+			name: "bad version",
+			instanceFn: func() *unstructured.Unstructured {
+				instance := testserver.NewNoxuInstance(ns, "foo")
+				instance.Object["apiVersion"] = "mygroup.example.com/v2"
+				return instance
+			},
+			expectedError: "the API version in the data (mygroup.example.com/v2) does not match the expected API version (mygroup.example.com/v1beta1)",
+		},
+		{
+			name: "bad kind",
+			instanceFn: func() *unstructured.Unstructured {
+				instance := testserver.NewNoxuInstance(ns, "foo")
+				instance.Object["kind"] = "SomethingElse"
+				return instance
+			},
+			expectedError: `SomethingElse.mygroup.example.com "foo" is invalid: kind: Invalid value: "SomethingElse": must be WishIHadChosenNoxu`,
+		},
+	}
+
+	for _, tc := range tests {
+		_, err := noxuResourceClient.Create(tc.instanceFn())
+		if err == nil {
+			t.Errorf("%v: expected %v", tc.name, tc.expectedError)
+			continue
+		}
+		// this only works when status errors contain the expect kind and version, so this effectively tests serializations too
+		if !strings.Contains(err.Error(), tc.expectedError) {
+			t.Errorf("%v: expected %v, got %v", tc.name, tc.expectedError, err)
+			continue
+		}
+	}
+}