[GarbageCollector] let dynamic client handle non-registered ListOptions

pkg/api/serialization_test.go

@@ -174,6 +174,20 @@ var nonRoundTrippableTypes = sets.NewString(
 	"WatchEvent",
 )
 
+var commonKinds = []string{"ListOptions", "DeleteOptions"}
+
+// verify all external group/versions have the common kinds like the ListOptions, DeleteOptions are registered.
+func TestCommonKindsRegistered(t *testing.T) {
+	for _, kind := range commonKinds {
+		for _, group := range testapi.Groups {
+			gv := group.GroupVersion()
+			if _, err := api.Scheme.New(gv.WithKind(kind)); err != nil {
+				t.Error(err)
+			}
+		}
+	}
+}
+
 var nonInternalRoundTrippableTypes = sets.NewString("List", "ListOptions", "ExportOptions")
 var nonRoundTrippableTypesByVersion = map[string][]string{}
 

pkg/apis/apps/v1alpha1/register.go

@@ -41,6 +41,7 @@ func addKnownTypes(scheme *runtime.Scheme) {
 		&PetSet{},
 		&PetSetList{},
 		&v1.ListOptions{},
+		&v1.DeleteOptions{},
 	)
 	versionedwatch.AddToGroupVersion(scheme, SchemeGroupVersion)
 }

pkg/apis/autoscaling/v1/register.go

@@ -41,6 +41,7 @@ func addKnownTypes(scheme *runtime.Scheme) {
 		&HorizontalPodAutoscalerList{},
 		&Scale{},
 		&v1.ListOptions{},
+		&v1.DeleteOptions{},
 	)
 	versionedwatch.AddToGroupVersion(scheme, SchemeGroupVersion)
 }

pkg/apis/batch/v1/register.go

@@ -41,6 +41,7 @@ func addKnownTypes(scheme *runtime.Scheme) {
 		&Job{},
 		&JobList{},
 		&v1.ListOptions{},
+		&v1.DeleteOptions{},
 	)
 	versionedwatch.AddToGroupVersion(scheme, SchemeGroupVersion)
 }

pkg/apis/batch/v2alpha1/register.go

@@ -44,6 +44,7 @@ func addKnownTypes(scheme *runtime.Scheme) {
 		&ScheduledJob{},
 		&ScheduledJobList{},
 		&v1.ListOptions{},
+		&v1.DeleteOptions{},
 	)
 	versionedwatch.AddToGroupVersion(scheme, SchemeGroupVersion)
 }

pkg/apis/policy/v1alpha1/register.go

@@ -18,6 +18,7 @@ package v1alpha1
 
 import (
 	"k8s.io/kubernetes/pkg/api/unversioned"
+	"k8s.io/kubernetes/pkg/api/v1"
 	"k8s.io/kubernetes/pkg/runtime"
 	versionedwatch "k8s.io/kubernetes/pkg/watch/versioned"
 )
@@ -41,6 +42,8 @@ func addKnownTypes(scheme *runtime.Scheme) {
 	scheme.AddKnownTypes(SchemeGroupVersion,
 		&PodDisruptionBudget{},
 		&PodDisruptionBudgetList{},
+		&v1.ListOptions{},
+		&v1.DeleteOptions{},
 	)
 	// Add the watch version that applies
 	versionedwatch.AddToGroupVersion(scheme, SchemeGroupVersion)

pkg/client/typed/dynamic/client.go

@@ -270,3 +270,26 @@ func (parameterCodec) DecodeParameters(parameters url.Values, from unversioned.G
 }
 
 var defaultParameterEncoder runtime.ParameterCodec = parameterCodec{}
+
+type versionedParameterEncoderWithV1Fallback struct{}
+
+func (versionedParameterEncoderWithV1Fallback) EncodeParameters(obj runtime.Object, to unversioned.GroupVersion) (url.Values, error) {
+	ret, err := api.ParameterCodec.EncodeParameters(obj, to)
+	if err != nil && runtime.IsNotRegisteredError(err) {
+		// fallback to v1
+		return api.ParameterCodec.EncodeParameters(obj, v1.SchemeGroupVersion)
+	}
+	return ret, err
+}
+
+func (versionedParameterEncoderWithV1Fallback) DecodeParameters(parameters url.Values, from unversioned.GroupVersion, into runtime.Object) error {
+	return errors.New("DecodeParameters not implemented on versionedParameterEncoderWithV1Fallback")
+}
+
+// VersionedParameterEncoderWithV1Fallback is useful for encoding query
+// parameters for thirdparty resources. It tries to convert object to the
+// specified version before converting it to query parameters, and falls back to
+// converting to v1 if the object is not registered in the specified version.
+// For the record, currently API server always treats query parameters sent to a
+// thirdparty resource endpoint as v1.
+var VersionedParameterEncoderWithV1Fallback runtime.ParameterCodec = versionedParameterEncoderWithV1Fallback{}

pkg/controller/garbagecollector/garbagecollector.go

@@ -443,21 +443,19 @@ func gcListWatcher(client *dynamic.Client, resource unversioned.GroupVersionReso
 			// namespaces if it's namespace scoped, so leave
 			// APIResource.Namespaced as false is all right.
 			apiResource := unversioned.APIResource{Name: resource.Resource}
-			// The default parameter codec used by the dynamic client cannot
-			// encode api.ListOptions.
-			// TODO: api.ParameterCodec doesn't support thirdparty objects.
-			// We need a generic parameter codec.
-			return client.ParameterCodec(api.ParameterCodec).Resource(&apiResource, api.NamespaceAll).List(&options)
+			return client.ParameterCodec(dynamic.VersionedParameterEncoderWithV1Fallback).
+				Resource(&apiResource, api.NamespaceAll).
+				List(&options)
 		},
 		WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
 			// APIResource.Kind is not used by the dynamic client, so
 			// leave it empty. We want to list this resource in all
 			// namespaces if it's namespace scoped, so leave
 			// APIResource.Namespaced as false is all right.
 			apiResource := unversioned.APIResource{Name: resource.Resource}
-			// The default parameter codec used by the dynamic client cannot
-			// encode api.ListOptions.
-			return client.ParameterCodec(api.ParameterCodec).Resource(&apiResource, api.NamespaceAll).Watch(&options)
+			return client.ParameterCodec(dynamic.VersionedParameterEncoderWithV1Fallback).
+				Resource(&apiResource, api.NamespaceAll).
+				Watch(&options)
 		},
 	}
 }