docs: Add sample app for invoking private endpoint documentation (#3270)

* Update workflows.json

* Create app.js

* Create package.json

* Create README.md

* Create app.test.js

* Update app.test.js

---------

Co-authored-by: Patti Shin <[email protected]>
Co-authored-by: Karl Weinmeister <[email protected]>

Author: 3 people

.github/workflows/utils/workflows.json

@@ -91,5 +91,6 @@
   "translate",
   "video-intelligence",
   "vision/productSearch",
-  "workflows"
+  "workflows",
+  "workflows/invoke-private-endpoint"
 ]

workflows/invoke-private-endpoint/README.md

@@ -0,0 +1,5 @@
+# Node.js sample for "Invoke a VPC Service Controls-compliant private endpoint"
+
+This is the sample application for the
+[Invoke a VPC Service Controls-compliant private endpoint](https://cloud.google.com/workflows/docs/invoke-private-endpoint-vpc)
+page found in the [Google Cloud Workflows](https://cloud.google.com/workflows/docs) documentation.

workflows/invoke-private-endpoint/app.js

@@ -0,0 +1,30 @@
+// Copyright 2023 Google LLC
+//
+// 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
+//
+//     https://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.
+
+'use strict';
+
+// [START workflows_private_endpoint]
+const express = require('express');
+const app = express();
+
+app.get('/', (req, res) => {
+  res.status(200).send('Hello, world!').end();
+});
+
+app.listen(3000, () => {
+  console.log('Sample app listening on port 3000.');
+});
+// [END workflows_private_endpoint]
+
+module.exports = app;

workflows/invoke-private-endpoint/package.json

@@ -0,0 +1,27 @@
+{
+  "name": "workflows-hello-private-endpoint",
+  "description": "Simple Hello World Node.js sample for Workflows",
+  "version": "1.0.0",
+  "private": true,
+  "license": "Apache-2.0",
+  "author": "Google Inc.",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/GoogleCloudPlatform/nodejs-docs-samples.git"
+  },
+  "engines": {
+    "node": ">=14.0.0"
+  },
+  "scripts": {
+    "start": "node app.js",
+    "test": "c8 mocha --exit test/*.test.js"
+  },
+  "dependencies": {
+    "express": "^4.17.1"
+  },
+  "devDependencies": {
+    "c8": "^7.13.0",
+    "mocha": "^10.0.0",
+    "supertest": "^6.0.0"
+  }
+}

workflows/invoke-private-endpoint/test/app.test.js

@@ -0,0 +1,28 @@
+// Copyright 2023 Google LLC
+//
+// 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
+//
+//     https://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.
+
+const app = require('../app');
+const request = require('supertest');
+
+describe('workflows_private_endpoint', () => {
+  describe('GET /', () => {
+    it('should get 200', done => {
+      request(app).get('/').expect(200, done);
+    });
+
+    it('should get Hello World', done => {
+      request(app).get('/').expect('Hello, world!', done);
+    });
+  });
+});