feat: add explore-backend plugin

Signed-off-by: Andrew Thauer <athauer@wealthsimple.com>

packages/backend/package.json

@@ -43,6 +43,8 @@
     "@backstage/plugin-code-coverage-backend": "workspace:^",
     "@backstage/plugin-events-backend": "workspace:^",
     "@backstage/plugin-events-node": "workspace:^",
+    "@backstage/plugin-explore-backend": "workspace:^",
+    "@backstage/plugin-explore-common": "workspace:^",
     "@backstage/plugin-graphql-backend": "workspace:^",
     "@backstage/plugin-jenkins-backend": "workspace:^",
     "@backstage/plugin-kafka-backend": "workspace:^",

packages/backend/src/index.ts

@@ -45,6 +45,7 @@ import catalog from './plugins/catalog';
 import catalogEventBasedProviders from './plugins/catalogEventBasedProviders';
 import codeCoverage from './plugins/codecoverage';
 import events from './plugins/events';
+import explore from './plugins/explore';
 import kubernetes from './plugins/kubernetes';
 import kafka from './plugins/kafka';
 import rollbar from './plugins/rollbar';
@@ -144,6 +145,7 @@ async function main() {
   const permissionEnv = useHotMemoize(module, () => createEnv('permission'));
   const playlistEnv = useHotMemoize(module, () => createEnv('playlist'));
   const eventsEnv = useHotMemoize(module, () => createEnv('events'));
+  const exploreEnv = useHotMemoize(module, () => createEnv('explore'));
 
   const eventBasedEntityProviders = await catalogEventBasedProviders(
     catalogEnv,
@@ -172,6 +174,7 @@ async function main() {
   apiRouter.use('/jenkins', await jenkins(jenkinsEnv));
   apiRouter.use('/permission', await permission(permissionEnv));
   apiRouter.use('/playlist', await playlist(playlistEnv));
+  apiRouter.use('/explore', await explore(exploreEnv));
   apiRouter.use(notFoundHandler());
 
   const service = createServiceBuilder(module)

packages/backend/src/plugins/explore.ts

@@ -0,0 +1,33 @@
+/*
+ * 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,
+  getExampleTools,
+} from '@backstage/plugin-explore-backend';
+import { Router } from 'express';
+import { PluginEnvironment } from '../types';
+
+export default async function createPlugin(
+  env: PluginEnvironment,
+): Promise<Router> {
+  return await createRouter({
+    logger: env.logger,
+    toolProvider: {
+      getTools: getExampleTools,
+    },
+  });
+}

packages/backend/src/plugins/search.ts

@@ -16,6 +16,7 @@
 
 import { useHotCleanup } from '@backstage/backend-common';
 import { DefaultCatalogCollatorFactory } from '@backstage/plugin-catalog-backend';
+import { ToolDocumentCollatorFactory } from '@backstage/plugin-explore-backend';
 import { createRouter } from '@backstage/plugin-search-backend';
 import { ElasticSearchSearchEngine } from '@backstage/plugin-search-backend-module-elasticsearch';
 import { PgSearchEngine } from '@backstage/plugin-search-backend-module-pg';
@@ -84,6 +85,14 @@ export default async function createPlugin(
     }),
   });
 
+  indexBuilder.addCollator({
+    schedule,
+    factory: ToolDocumentCollatorFactory.fromConfig(env.config, {
+      discovery: env.discovery,
+      logger: env.logger,
+    }),
+  });
+
   // The scheduler controls when documents are gathered from collators and sent
   // to the search engine for indexing.
   const { scheduler } = await indexBuilder.build();