migrate graphql-backend plugin to the new backend system

Signed-off-by: zcason <a-zcason@expediagroup.com>

packages/backend-next/package.json

@@ -38,6 +38,7 @@
     "@backstage/plugin-catalog-backend-module-unprocessed": "workspace:^",
     "@backstage/plugin-devtools-backend": "workspace:^",
     "@backstage/plugin-entity-feedback-backend": "workspace:^",
+    "@backstage/plugin-graphql-backend": "workspace:^",
     "@backstage/plugin-kubernetes-backend": "workspace:^",
     "@backstage/plugin-lighthouse-backend": "workspace:^",
     "@backstage/plugin-linguist-backend": "workspace:^",

packages/backend-next/src/index.ts

@@ -29,6 +29,7 @@ backend.add(
 backend.add(import('@backstage/plugin-catalog-backend/alpha'));
 backend.add(import('@backstage/plugin-devtools-backend'));
 backend.add(import('@backstage/plugin-entity-feedback-backend'));
+backend.add(import('@backstage/plugin-graphql-backend'));
 backend.add(import('@backstage/plugin-kubernetes-backend/alpha'));
 backend.add(import('@backstage/plugin-lighthouse-backend'));
 backend.add(import('@backstage/plugin-linguist-backend'));

plugins/graphql-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 { Config } from '@backstage/config';
 import express from 'express';
 import { Logger } from 'winston';
@@ -10,6 +11,10 @@ import { Logger } from 'winston';
 // @public (undocumented)
 export function createRouter(options: RouterOptions): Promise<express.Router>;
 
+// @public
+const graphqlPlugin: () => BackendFeature;
+export default graphqlPlugin;
+
 // @public (undocumented)
 export interface RouterOptions {
   // (undocumented)

plugins/graphql-backend/src/index.ts

@@ -21,3 +21,4 @@
  */
 
 export * from './service/router';
+export { graphqlPlugin as default } from './plugin';

plugins/graphql-backend/src/plugin.ts

@@ -0,0 +1,42 @@
+/*
+ * 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 {
+  coreServices,
+  createBackendPlugin,
+} from '@backstage/backend-plugin-api';
+import { createRouter } from './service/router';
+import { loggerToWinstonLogger } from '@backstage/backend-common';
+
+export const graphqlPlugin = createBackendPlugin({
+  pluginId: 'graphql',
+  register(env) {
+    env.registerInit({
+      deps: {
+        config: coreServices.rootConfig,
+        http: coreServices.httpRouter,
+        logger: coreServices.logger,
+      },
+      async init({ config, http, logger }) {
+        http.use(
+          await createRouter({
+            config,
+            logger: loggerToWinstonLogger(logger),
+          }),
+        );
+      },
+    });
+  },
+});

yarn.lock

@@ -7280,6 +7280,7 @@ __metadata:
   dependencies:
     "@apollo/server": ^4.0.0
     "@backstage/backend-common": "workspace:^"
+    "@backstage/backend-plugin-api": "workspace:^"
     "@backstage/cli": "workspace:^"
     "@backstage/config": "workspace:^"
     "@backstage/plugin-catalog-graphql": "workspace:^"
@@ -25960,6 +25961,7 @@ __metadata:
     "@backstage/plugin-catalog-backend-module-unprocessed": "workspace:^"
     "@backstage/plugin-devtools-backend": "workspace:^"
     "@backstage/plugin-entity-feedback-backend": "workspace:^"
+    "@backstage/plugin-graphql-backend": "workspace:^"
     "@backstage/plugin-kubernetes-backend": "workspace:^"
     "@backstage/plugin-lighthouse-backend": "workspace:^"
     "@backstage/plugin-linguist-backend": "workspace:^"