Added alpha support for new backend system

Signed-off-by: Andre Wanlin <67169551+awanlin@users.noreply.github.com>

plugins/devtools-backend/README.md

@@ -49,6 +49,34 @@ Here's how to get the DevTools Backend up and running:
 4. Now run `yarn start-backend` from the repo root
 5. Finally open `http://localhost:7007/api/devtools/health` in a browser and it should return `{"status":"ok"}`
 
+### New Backend System
+
+The DevTools backend plugin has alpha 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 { appPlugin } from '@backstage/plugin-app-backend';
+  import { catalogPlugin } from '@backstage/plugin-catalog-backend';
+  import {
+    scaffolderPlugin,
+    catalogModuleTemplateKind,
+  } from '@backstage/plugin-scaffolder-backend';
++ import { devtoolsPlugin } from '@backstage/plugin-devtools-backend/alpha';
+
+  const backend = createBackend();
+
+  backend.add(appPlugin());
+  backend.add(catalogPlugin());
+  backend.add(catalogModuleTemplateKind());
+  backend.add(scaffolderPlugin());
+
++ backend.add(devtoolsPlugin());
+
+  backend.start();
+```
+
 ## Links
 
 - [Frontend part of the plugin](../devtools/README.md)

plugins/devtools-backend/alpha-api-report.md

@@ -0,0 +1,12 @@
+## API Report File for "@backstage/plugin-devtools-backend"
+
+> 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';
+
+// @alpha
+export const devtoolsPlugin: () => BackendFeature;
+
+// (No @packageDocumentation comment for this package)
+```

plugins/devtools-backend/package.json

@@ -9,6 +9,21 @@
     "main": "dist/index.cjs.js",
     "types": "dist/index.d.ts"
   },
+  "exports": {
+    ".": "./src/index.ts",
+    "./alpha": "./src/alpha.ts",
+    "./package.json": "./package.json"
+  },
+  "typesVersions": {
+    "*": {
+      "alpha": [
+        "src/alpha.ts"
+      ],
+      "package.json": [
+        "package.json"
+      ]
+    }
+  },
   "backstage": {
     "role": "backend-plugin"
   },
@@ -23,6 +38,7 @@
   },
   "dependencies": {
     "@backstage/backend-common": "workspace:^",
+    "@backstage/backend-plugin-api": "workspace:^",
     "@backstage/cli-common": "workspace:^",
     "@backstage/config": "workspace:^",
     "@backstage/config-loader": "workspace:^",

plugins/devtools-backend/src/alpha.ts

@@ -0,0 +1,16 @@
+/*
+ * 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.
+ */
+export { devtoolsPlugin } from './plugin';

plugins/devtools-backend/src/plugin.ts

@@ -0,0 +1,50 @@
+/*
+ * 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 {
+  coreServices,
+  createBackendPlugin,
+} from '@backstage/backend-plugin-api';
+import { createRouter } from './service/router';
+
+/**
+ * Azure DevOps backend plugin
+ *
+ * @alpha
+ */
+export const devtoolsPlugin = createBackendPlugin({
+  pluginId: 'devtools',
+  register(env) {
+    env.registerInit({
+      deps: {
+        config: coreServices.config,
+        logger: coreServices.logger,
+        permissions: coreServices.permissions,
+        httpRouter: coreServices.httpRouter,
+      },
+      async init({ config, logger, permissions, httpRouter }) {
+        httpRouter.use(
+          await createRouter({
+            config,
+            logger: loggerToWinstonLogger(logger),
+            permissions,
+          }),
+        );
+      },
+    });
+  },
+});