Update task schedule examples

Signed-off-by: Johan Haals <johan.haals@gmail.com>

packages/backend-tasks/README.md

@@ -15,14 +15,13 @@ then make use of its facilities as necessary:
 
 ```typescript
 import { TaskScheduler } from '@backstage/backend-tasks';
-import { Duration } from 'luxon';
 
 const scheduler = TaskScheduler.fromConfig(rootConfig).forPlugin('my-plugin');
 
 await scheduler.scheduleTask({
   id: 'refresh_things',
   frequency: { cron: '*/5 * * * *' }, // every 5 minutes, also supports Duration
-  timeout: Duration.fromObject({ minutes: 15 }),
+  timeout: { minutes: 15 },
   fn: async () => {
     await entityProvider.run();
   },

packages/backend/src/plugins/search.ts

@@ -26,7 +26,6 @@ import {
 } from '@backstage/plugin-search-backend-node';
 import { DefaultTechDocsCollatorFactory } from '@backstage/plugin-techdocs-backend';
 import { Router } from 'express';
-import { Duration } from 'luxon';
 import { PluginEnvironment } from '../types';
 
 async function createSearchEngine(
@@ -57,11 +56,11 @@ export default async function createPlugin(
   });
 
   const schedule = env.scheduler.createScheduledTaskRunner({
-    frequency: Duration.fromObject({ minutes: 10 }),
-    timeout: Duration.fromObject({ minutes: 15 }),
+    frequency: { seconds: 10 },
+    timeout: { minutes: 15 },
     // A 3 second delay gives the backend server a chance to initialize before
     // any collators are executed, which may attempt requests against the API.
-    initialDelay: Duration.fromObject({ seconds: 3 }),
+    initialDelay: { seconds: 3 },
   });
 
   // Collators are responsible for gathering documents known to plugins. This

packages/create-app/templates/default-app/packages/backend/package.json.hbs

@@ -36,7 +36,6 @@
     "dockerode": "^3.3.1",
     "express": "^4.17.1",
     "express-promise-router": "^4.1.0",
-    "luxon": "^2.0.2",
     "pg": "^8.3.0",
     "winston": "^3.2.1"
   },

packages/create-app/templates/default-app/packages/backend/src/plugins/search.ts.hbs

@@ -8,7 +8,6 @@ import { PluginEnvironment } from '../types';
 import { DefaultCatalogCollatorFactory } from '@backstage/plugin-catalog-backend';
 import { DefaultTechDocsCollatorFactory } from '@backstage/plugin-techdocs-backend';
 import { Router } from 'express';
-import { Duration } from 'luxon';
 
 export default async function createPlugin(
   env: PluginEnvironment,
@@ -23,11 +22,11 @@ export default async function createPlugin(
   });
 
   const schedule = env.scheduler.createScheduledTaskRunner({
-    frequency: Duration.fromObject({ minutes: 10 }),
-    timeout: Duration.fromObject({ minutes: 15 }),
+    frequency: { minutes: 10 },
+    timeout: { minutes: 15 },
     // A 3 second delay gives the backend server a chance to initialize before
     // any collators are executed, which may attempt requests against the API.
-    initialDelay: Duration.fromObject({ seconds: 3 }),
+    initialDelay: { seconds: 3 },
   });
 
   // Collators are responsible for gathering documents known to plugins. This