graphql: Add -backend suffix to the plugin directory

plugins/graphql is a backend plugin published at @backstage/plugin-graphql-backend
When exploring the repository, I got confused to find only plugins/graphql since backend plugins are supposed to have the -backend suffix

Signed-off-by: Himanshu Mishra <himanshu@orkohunter.net>

plugins/graphql-backend/src/index.ts

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2020 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.
+ */
+
+/**
+ * An experimental Backstage backend plugin for GraphQL
+ *
+ * @packageDocumentation
+ */
+
+export * from './service/router';

plugins/graphql-backend/src/service/router.test.ts

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2020 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 { createRouter } from './router';
+import supertest from 'supertest';
+import { ConfigReader } from '@backstage/config';
+import { createLogger } from 'winston';
+import express from 'express';
+
+describe('Router', () => {
+  describe('/health', () => {
+    it('should return ok', async () => {
+      const config = new ConfigReader({ backend: { baseUrl: 'lol' } });
+
+      const router = await createRouter({ config, logger: createLogger() });
+      const app = express().use(router);
+
+      const { body } = await supertest(app).get('/health');
+
+      expect(body).toEqual({ status: 'ok' });
+    });
+  });
+});

plugins/graphql-backend/src/service/router.ts

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2020 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 { errorHandler, resolvePackagePath } from '@backstage/backend-common';
+import express from 'express';
+import Router from 'express-promise-router';
+import { Logger } from 'winston';
+import fs from 'fs';
+import { GraphQLModule } from '@graphql-modules/core';
+import { ApolloServer } from 'apollo-server-express';
+import { createModule as createCatalogModule } from '@backstage/plugin-catalog-graphql';
+import { Config } from '@backstage/config';
+import helmet from 'helmet';
+
+const schemaPath = resolvePackagePath(
+  '@backstage/plugin-graphql-backend',
+  'schema.gql',
+);
+
+export interface RouterOptions {
+  logger: Logger;
+  config: Config;
+}
+
+export async function createRouter(
+  options: RouterOptions,
+): Promise<express.Router> {
+  const typeDefs = await fs.promises.readFile(schemaPath, 'utf-8');
+
+  const catalogModule = await createCatalogModule(options);
+
+  const { schema } = new GraphQLModule({
+    imports: [catalogModule],
+    typeDefs,
+  });
+
+  const server = new ApolloServer({
+    schema,
+    logger: options.logger,
+    introspection: true,
+    playground: process.env.NODE_ENV === 'development',
+  });
+
+  const router = Router();
+
+  router.get('/health', (_, response) => {
+    response.send({ status: 'ok' });
+  });
+
+  const apolloMiddleware = server.getMiddleware({ path: '/' });
+
+  if (process.env.NODE_ENV === 'development')
+    router.use(
+      helmet.contentSecurityPolicy({
+        directives: {
+          defaultSrc: ["'self'", "'unsafe-inline'", 'http://*'],
+        },
+      }),
+    );
+
+  router.use(apolloMiddleware);
+
+  router.use(errorHandler());
+
+  return router;
+}

plugins/graphql-backend/src/setupTests.ts

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+/*
+ * Copyright 2020 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 {};