added support to Lighthouse for new backend

Signed-off-by: Jonathan Roebuck <jroebuck@spotify.com>

.changeset/pretty-jeans-smell.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-lighthouse-backend': patch
+---
+
+Added support for the [new backend system](https://backstage.io/docs/backend-system/)

packages/backend-next/package.json

@@ -37,6 +37,7 @@
     "@backstage/plugin-devtools-backend": "workspace:^",
     "@backstage/plugin-entity-feedback-backend": "workspace:^",
     "@backstage/plugin-kubernetes-backend": "workspace:^",
+    "@backstage/plugin-lighthouse-backend": "workspace:^",
     "@backstage/plugin-linguist-backend": "workspace:^",
     "@backstage/plugin-permission-backend": "workspace:^",
     "@backstage/plugin-permission-common": "workspace:^",

packages/backend-next/src/index.ts

@@ -38,6 +38,7 @@ import { linguistPlugin } from '@backstage/plugin-linguist-backend';
 import { devtoolsPlugin } from '@backstage/plugin-devtools-backend';
 import { TaskScheduleDefinition } from '@backstage/backend-tasks';
 import { adrPlugin } from '@backstage/plugin-adr-backend';
+import { lighthousePlugin } from '@backstage/plugin-lighthouse-backend';
 
 const backend = createBackend();
 
@@ -94,6 +95,9 @@ backend.add(searchModuleExploreCollator());
 // Kubernetes
 backend.add(kubernetesPlugin());
 
+// Lighthouse
+backend.add(lighthousePlugin());
+
 // Permissions
 backend.add(permissionPlugin());
 backend.add(permissionModuleAllowAllPolicy());

plugins/lighthouse-backend/README.md

@@ -58,6 +58,23 @@ export default async function createPlugin(env: PluginEnvironment) {
 +  await lighthouse(lighthouseEnv)
 ```
 
+#### New Backend System
+
+The Lighthouse backend plugin has support for the [new backend system](https://backstage.io/docs/backend-system/), here's how you can set that up:
+
+In your `packages/backend/src/index.ts` make the following changes:
+
+```diff
+  import { createBackend } from '@backstage/backend-defaults';
++ import { lighthousePlugin } from '@backstage/plugin-lighthouse-backend';
+  const backend = createBackend();
+  // ... other feature additions
++ backend.add(
++   lighthousePlugin(),
++ );
+  backend.start();
+```
+
 ## Configuration
 
 You can define how often and when the scheduler should run the audits:

plugins/lighthouse-backend/api-report.md

@@ -3,6 +3,7 @@
 > Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
 
 ```ts
+import { BackendFeature } from '@backstage/backend-plugin-api';
 import { CatalogClient } from '@backstage/catalog-client';
 import { Config } from '@backstage/config';
 import { Logger } from 'winston';
@@ -28,5 +29,8 @@ export function createScheduler(
   options: CreateLighthouseSchedulerOptions,
 ): Promise<void>;
 
+// @public
+export const lighthousePlugin: () => BackendFeature;
+
 // (No @packageDocumentation comment for this package)
 ```

plugins/lighthouse-backend/package.json

@@ -39,6 +39,7 @@
   },
   "dependencies": {
     "@backstage/backend-common": "workspace:^",
+    "@backstage/backend-plugin-api": "workspace:^",
     "@backstage/backend-tasks": "workspace:^",
     "@backstage/catalog-client": "workspace:^",
     "@backstage/catalog-model": "workspace:^",

plugins/lighthouse-backend/src/index.ts

@@ -14,4 +14,5 @@
  * limitations under the License.
  */
 
-export * from './service/plugin';
+export * from './service/createScheduler';
+export { lighthousePlugin } from './plugin';

plugins/lighthouse-backend/src/plugin.ts

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2023 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 { loggerToWinstonLogger } from '@backstage/backend-common';
+import {
+  createBackendPlugin,
+  coreServices,
+} from '@backstage/backend-plugin-api';
+import { CatalogClient } from '@backstage/catalog-client';
+import { createScheduler } from './service/createScheduler';
+
+/**
+ * Lighthouse backend plugin
+ *
+ * @public
+ */
+export const lighthousePlugin = createBackendPlugin({
+  pluginId: 'lighthouse',
+  register(env) {
+    env.registerInit({
+      deps: {
+        config: coreServices.config,
+        discovery: coreServices.discovery,
+        logger: coreServices.logger,
+        scheduler: coreServices.scheduler,
+        tokenManager: coreServices.tokenManager,
+      },
+      async init({ config, discovery, logger, scheduler, tokenManager }) {
+        const winstonLogger = loggerToWinstonLogger(logger);
+        const catalogClient = new CatalogClient({ discoveryApi: discovery });
+
+        await createScheduler({
+          catalogClient,
+          config,
+          logger: winstonLogger,
+          scheduler,
+          tokenManager,
+        });
+      },
+    });
+  },
+});

yarn.lock

@@ -7688,6 +7688,7 @@ __metadata:
   resolution: "@backstage/plugin-lighthouse-backend@workspace:plugins/lighthouse-backend"
   dependencies:
     "@backstage/backend-common": "workspace:^"
+    "@backstage/backend-plugin-api": "workspace:^"
     "@backstage/backend-tasks": "workspace:^"
     "@backstage/catalog-client": "workspace:^"
     "@backstage/catalog-model": "workspace:^"
@@ -24977,6 +24978,7 @@ __metadata:
     "@backstage/plugin-devtools-backend": "workspace:^"
     "@backstage/plugin-entity-feedback-backend": "workspace:^"
     "@backstage/plugin-kubernetes-backend": "workspace:^"
+    "@backstage/plugin-lighthouse-backend": "workspace:^"
     "@backstage/plugin-linguist-backend": "workspace:^"
     "@backstage/plugin-permission-backend": "workspace:^"
     "@backstage/plugin-permission-common": "workspace:^"