feat: promote instance metadata to stable

Signed-off-by: aramissennyeydd <aramis.sennyey@doordash.com>

packages/backend-plugin-api/src/alpha/index.ts

@@ -14,11 +14,6 @@
  * limitations under the License.
  */
 
-export type {
-  BackendFeatureMeta,
-  InstanceMetadataService,
-} from './InstanceMetadataService';
-
 export type {
   ActionsRegistryService,
   ActionsRegistryActionOptions,
@@ -27,8 +22,4 @@ export type {
 
 export type { ActionsService, ActionsServiceAction } from './ActionsService';
 
-export {
-  actionsRegistryServiceRef,
-  actionsServiceRef,
-  instanceMetadataServiceRef,
-} from './refs';
+export { actionsRegistryServiceRef, actionsServiceRef } from './refs';

packages/backend-plugin-api/src/alpha/refs.ts

@@ -16,15 +16,6 @@
 
 import { createServiceRef } from '@backstage/backend-plugin-api';
 
-/**
- * @alpha
- */
-export const instanceMetadataServiceRef = createServiceRef<
-  import('./InstanceMetadataService').InstanceMetadataService
->({
-  id: 'core.instanceMetadata',
-});
-
 /**
  * Service for calling distributed actions
  *

packages/backend-plugin-api/src/services/definitions/InstanceMetadataService.ts

@@ -14,19 +14,14 @@
  * limitations under the License.
  */
 
-/** @alpha */
-export type BackendFeatureMeta =
-  | {
-      type: 'plugin';
-      pluginId: string;
-    }
-  | {
-      type: 'module';
-      pluginId: string;
-      moduleId: string;
-    };
+export interface BackendPlugin {
+  pluginId: string;
+  modules: {
+    moduleId: string;
+  }[];
+}
 
 /** @alpha */
 export interface InstanceMetadataService {
-  getInstalledFeatures: () => BackendFeatureMeta[];
+  getInstalledPlugins: () => readonly BackendPlugin[];
 }

packages/backend-plugin-api/src/services/definitions/coreServices.ts

@@ -277,4 +277,15 @@ export namespace coreServices {
   export const urlReader = createServiceRef<
     import('./UrlReaderService').UrlReaderService
   >({ id: 'core.urlReader' });
+
+  /**
+   * Information about the current Backstage instance.
+   *
+   * @public
+   */
+  export const instanceMetadata = createServiceRef<
+    import('./InstanceMetadataService').InstanceMetadataService
+  >({
+    id: 'core.instanceMetadata',
+  });
 }

packages/backend-plugin-api/src/services/definitions/index.ts

@@ -85,4 +85,8 @@ export type {
   UrlReaderServiceSearchResponseFile,
 } from './UrlReaderService';
 export type { BackstageUserInfo, UserInfoService } from './UserInfoService';
+export type {
+  InstanceMetadataService,
+  BackendPlugin,
+} from './InstanceMetadataService';
 export { coreServices } from './coreServices';