DualWrite: Cleanup and centralize the dual write creation (#90013)

pkg/registry/apis/scope/register.go

@@ -15,11 +15,12 @@ import (
 	"k8s.io/kube-openapi/pkg/spec3"
 	"k8s.io/kube-openapi/pkg/validation/spec"
 
+	"github.com/prometheus/client_golang/prometheus"
+
 	scope "github.com/grafana/grafana/pkg/apis/scope/v0alpha1"
 	grafanarest "github.com/grafana/grafana/pkg/apiserver/rest"
 	"github.com/grafana/grafana/pkg/services/apiserver/builder"
 	"github.com/grafana/grafana/pkg/services/featuremgmt"
-	"github.com/prometheus/client_golang/prometheus"
 )
 
 var _ builder.APIGroupBuilder = (*ScopeAPIBuilder)(nil)
@@ -48,11 +49,6 @@ func (b *ScopeAPIBuilder) GetGroupVersion() schema.GroupVersion {
 	return scope.SchemeGroupVersion
 }
 
-func (b *ScopeAPIBuilder) GetDesiredDualWriterMode(dualWrite bool, modeMap map[string]grafanarest.DualWriterMode) grafanarest.DualWriterMode {
-	// Add required configuration support in order to enable other modes. For an example, see pkg/registry/apis/playlist/register.go
-	return grafanarest.Mode0
-}
-
 func (b *ScopeAPIBuilder) InstallSchema(scheme *runtime.Scheme) error {
 	err := scope.AddToScheme(scheme)
 	if err != nil {
@@ -121,8 +117,7 @@ func (b *ScopeAPIBuilder) GetAPIGroupInfo(
 	scheme *runtime.Scheme,
 	codecs serializer.CodecFactory,
 	optsGetter generic.RESTOptionsGetter,
-	_ grafanarest.DualWriterMode, // dual write desired mode (not relevant)
-	_ prometheus.Registerer, // prometheus registerer
+	_ grafanarest.DualWriteBuilder,
 ) (*genericapiserver.APIGroupInfo, error) {
 	apiGroupInfo := genericapiserver.NewDefaultAPIGroupInfo(scope.GROUP, scheme, metav1.ParameterCodec, codecs)