K8s: Add basic query service (#80325)

pkg/registry/apis/query/plugins.go

@@ -0,0 +1,62 @@
+package query
+
+import (
+	"context"
+
+	"k8s.io/apimachinery/pkg/apis/meta/internalversion"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apiserver/pkg/registry/rest"
+
+	common "github.com/grafana/grafana/pkg/apis/common/v0alpha1"
+	example "github.com/grafana/grafana/pkg/apis/example/v0alpha1"
+	query "github.com/grafana/grafana/pkg/apis/query/v0alpha1"
+)
+
+var (
+	_ rest.Storage              = (*pluginsStorage)(nil)
+	_ rest.Scoper               = (*pluginsStorage)(nil)
+	_ rest.SingularNameProvider = (*pluginsStorage)(nil)
+	_ rest.Lister               = (*pluginsStorage)(nil)
+)
+
+type pluginsStorage struct {
+	resourceInfo   *common.ResourceInfo
+	tableConverter rest.TableConvertor
+	registry       query.DataSourceApiServerRegistry
+}
+
+func newPluginsStorage(reg query.DataSourceApiServerRegistry) *pluginsStorage {
+	var resourceInfo = query.DataSourceApiServerResourceInfo
+	return &pluginsStorage{
+		resourceInfo:   &resourceInfo,
+		tableConverter: rest.NewDefaultTableConvertor(resourceInfo.GroupResource()),
+		registry:       reg,
+	}
+}
+
+func (s *pluginsStorage) New() runtime.Object {
+	return s.resourceInfo.NewFunc()
+}
+
+func (s *pluginsStorage) Destroy() {}
+
+func (s *pluginsStorage) NamespaceScoped() bool {
+	return false
+}
+
+func (s *pluginsStorage) GetSingularName() string {
+	return example.DummyResourceInfo.GetSingularName()
+}
+
+func (s *pluginsStorage) NewList() runtime.Object {
+	return s.resourceInfo.NewListFunc()
+}
+
+func (s *pluginsStorage) ConvertToTable(ctx context.Context, object runtime.Object, tableOptions runtime.Object) (*metav1.Table, error) {
+	return s.tableConverter.ConvertToTable(ctx, object, tableOptions)
+}
+
+func (s *pluginsStorage) List(ctx context.Context, options *internalversion.ListOptions) (runtime.Object, error) {
+	return s.registry.GetDatasourceApiServers(ctx)
+}