Merge pull request #28129 from backstage/sennyeya/deployment-discovery

feat: add a new system metadata service

packages/backend/src/index.ts

@@ -15,6 +15,7 @@
  */
 
 import { createBackend } from '@backstage/backend-defaults';
+import { rootSystemMetadataServiceFactory } from '@backstage/backend-defaults/alpha';
 import {
   coreServices,
   createBackendFeatureLoader,
@@ -69,7 +70,7 @@ backend.add(searchLoader);
 backend.add(import('@backstage/plugin-techdocs-backend'));
 backend.add(import('@backstage/plugin-signals-backend'));
 backend.add(import('@backstage/plugin-notifications-backend'));
-backend.add(import('./instanceMetadata'));
+backend.add(rootSystemMetadataServiceFactory);
 
 backend.add(import('@backstage/plugin-events-backend-module-google-pubsub'));
 backend.add(import('@backstage/plugin-mcp-actions-backend'));

packages/backend/src/instanceMetadata.ts

@@ -1,40 +0,0 @@
-/*
- * Copyright 2024 The Backstage 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.
- */
-import {
-  coreServices,
-  createBackendPlugin,
-} from '@backstage/backend-plugin-api';
-
-// Example usage of the instance metadata service to log the installed plugins.
-export default createBackendPlugin({
-  pluginId: 'instance-metadata-logging',
-  register(env) {
-    env.registerInit({
-      deps: {
-        instanceMetadata: coreServices.rootInstanceMetadata,
-        logger: coreServices.logger,
-      },
-      async init({ instanceMetadata, logger }) {
-        const plugins = await instanceMetadata.getInstalledPlugins();
-        logger.info(
-          `Installed plugins on this instance: ${plugins
-            .map(e => e.pluginId)
-            .join(', ')}`,
-        );
-      },
-    });
-  },
-});