docs(samples): Add HTTP Task Sample with Authentication Token (#200)

* Task with authentication sample

* Update region tags

* Linting error

* Small updates

* Add real service account to tests

* Update queue id

cloud-tasks/Dockerfile

@@ -0,0 +1,20 @@
+# Use the official Node.js 10 image.
+# https://hub.docker.com/_/node
+FROM node:10
+
+# Create and change to the app directory.
+WORKDIR /usr/src/app
+
+# Copy application dependency manifests to the container image.
+# A wildcard is used to ensure both package.json AND package-lock.json are copied.
+# Copying this separately prevents re-running npm install on every code change.
+COPY package.json package*.json ./
+
+# Install production dependencies.
+RUN npm install --only=production
+
+# Copy local code to the container image.
+COPY . .
+
+# Run the web service on container startup.
+CMD [ "npm", "start" ]

cloud-tasks/createHttpTaskWithToken.js

@@ -0,0 +1,83 @@
+/**
+ * Copyright 2019, 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
+ *
+ *    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.
+ */
+
+'use strict';
+
+/**
+ * Create a task with an HTTP target for a given queue with an arbitrary payload.
+ */
+async function createHttpTaskWithToken(
+  project,
+  location,
+  queue,
+  url,
+  email,
+  payload,
+  inSeconds
+) {
+  // [START cloud_tasks_create_http_task_with_token]
+  // Imports the Google Cloud Tasks library.
+  const {v2beta3} = require('@google-cloud/tasks');
+
+  // Instantiates a client.
+  const client = new v2beta3.CloudTasksClient();
+
+  // TODO(developer): Uncomment these lines and replace with your values.
+  // const project = 'my-project-id';
+  // const queue = 'my-appengine-queue';
+  // const location = 'us-central1';
+  // const url = 'https://<project-id>.appspot.com/log_payload'
+  // const email = 'client@<project-id>.iam.gserviceaccount.com'
+  // const options = {payload: 'hello'};
+
+  // Construct the fully qualified queue name.
+  const parent = client.queuePath(project, location, queue);
+
+  const task = {
+    httpRequest: {
+      httpMethod: 'POST',
+      url, //The full url path that the request will be sent to.
+      oidcToken: {
+        serviceAccountEmail: email,
+      },
+    },
+  };
+
+  if (payload) {
+    task.httpRequest.body = Buffer.from(payload).toString('base64');
+  }
+
+  if (inSeconds) {
+    task.scheduleTime = {
+      seconds: inSeconds + Date.now() / 1000,
+    };
+  }
+
+  const request = {
+    parent: parent,
+    task: task,
+  };
+
+  console.log('Sending task:');
+  console.log(task);
+  // Send create task request.
+  const [response] = await client.createTask(request);
+  const name = response.name;
+  console.log(`Created task ${name}`);
+
+  // [END cloud_tasks_create_http_task_with_token]
+}
+
+createHttpTaskWithToken(...process.argv.slice(2)).catch(console.error);

cloud-tasks/package.json

@@ -19,7 +19,7 @@
   },
   "devDependencies": {
     "chai": "^4.2.0",
-    "mocha": "^6.0.0",
+    "mocha": "^6.1.3",
     "uuid": "^3.3.2"
   }
 }

cloud-tasks/test/test.samples.js

@@ -23,6 +23,7 @@ const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
 const PROJECT_ID = process.env.GCLOUD_PROJECT;
 const queueName = `gcloud-${uuid.v4().split('-')[0]}`;
 const URL = `https://${PROJECT_ID}.appspot.com/log_payload`;
+const SERVICE_ACCOUNT = process.env.CLOUD_RUN_INVOKER_SERVICE_ACCOUNT;
 
 describe('Cloud Task Sample Tests', () => {
   it('should create a queue', () => {
@@ -44,6 +45,13 @@ describe('Cloud Task Sample Tests', () => {
     assert.match(stdout, /Created task/);
   });
 
+  it('should create a HTTP task with token', () => {
+    const stdout = execSync(
+      `node createHttpTaskWithToken ${PROJECT_ID} us-central1 my-appengine-queue ${URL} ${SERVICE_ACCOUNT}`
+    );
+    assert.match(stdout, /Created task/);
+  });
+
   it('should delete a queue', () => {
     const stdout = execSync(`node deleteQueue ${PROJECT_ID} ${queueName}`);
     assert.match(stdout, /Deleted queue/);