@google-cloud/tasks

What is @google-cloud/tasks?

@google-cloud/tasks is a Node.js client library for Google Cloud Tasks, which allows you to manage the execution of large numbers of distributed requests. It provides a way to create, manage, and dispatch tasks to App Engine, HTTP, or Cloud Pub/Sub targets.

What are @google-cloud/tasks's main functionalities?

Create a Task

This feature allows you to create a new task in a specified queue. The task can be an HTTP request with a payload.

const {CloudTasksClient} = require('@google-cloud/tasks');
const client = new CloudTasksClient();

async function createTask() {
  const project = 'my-project-id';
  const queue = 'my-queue';
  const location = 'us-central1';
  const url = 'https://example.com/taskhandler';
  const payload = 'Hello, World!';

  const parent = client.queuePath(project, location, queue);
  const task = {
    httpRequest: {
      httpMethod: 'POST',
      url,
      body: Buffer.from(payload).toString('base64'),
      headers: {
        'Content-Type': 'application/json',
      },
    },
  };

  const request = {parent, task};
  const [response] = await client.createTask(request);
  console.log(`Created task ${response.name}`);
}

createTask().catch(console.error);

Delete a Task

This feature allows you to delete a specified task from a queue.

const {CloudTasksClient} = require('@google-cloud/tasks');
const client = new CloudTasksClient();

async function deleteTask() {
  const project = 'my-project-id';
  const queue = 'my-queue';
  const location = 'us-central1';
  const task = 'my-task-id';

  const name = client.taskPath(project, location, queue, task);
  await client.deleteTask({name});
  console.log(`Deleted task ${name}`);
}

deleteTask().catch(console.error);

List Tasks

This feature allows you to list all tasks in a specified queue.

const {CloudTasksClient} = require('@google-cloud/tasks');
const client = new CloudTasksClient();

async function listTasks() {
  const project = 'my-project-id';
  const queue = 'my-queue';
  const location = 'us-central1';

  const parent = client.queuePath(project, location, queue);
  const [tasks] = await client.listTasks({parent});
  tasks.forEach(task => {
    console.log(`Task: ${task.name}`);
  });
}

listTasks().catch(console.error);

Other packages similar to @google-cloud/tasks

bull

Bull is a Node library that implements a fast and robust queue system based on Redis. It provides features like delayed jobs, rate-limited jobs, and job prioritization. Compared to @google-cloud/tasks, Bull is more focused on in-memory job queues and does not offer direct integration with Google Cloud services.

agenda

Agenda is a lightweight job scheduling library for Node.js that uses MongoDB as a persistence layer. It is designed for long-running jobs and provides features like job scheduling, job prioritization, and job concurrency. Unlike @google-cloud/tasks, Agenda is more suitable for applications that already use MongoDB and need a simple job scheduling solution.

kue

Kue is a priority job queue backed by Redis, built for Node.js. It provides features like job events, job retries, and job progress tracking. Kue is similar to Bull but offers a different API and feature set. It does not provide the same level of integration with Google Cloud services as @google-cloud/tasks.

README

Cloud Tasks: Node.js Client

Cloud Tasks API client for Node.js

• Cloud Tasks Node.js Client API Reference
• Cloud Tasks Documentation
• github.com/googleapis/nodejs-tasks

Read more about the client libraries for Cloud APIs, including the older Google APIs Client Libraries, in Client Libraries Explained.

Table of contents:

• Quickstart
  • Before you begin
  • Installing the client library
  • Using the client library
• Samples
• Versioning
• Contributing
• License

Quickstart

Before you begin

1. Select or create a Cloud Platform project.
2. Enable billing for your project.
3. Enable the Cloud Tasks API.
4. Set up authentication with a service account so you can access the API from your local workstation.

Installing the client library

npm install @google-cloud/tasks

Using the client library

  // Imports the Google Cloud Tasks library.
  const {CloudTasksClient} = require('@google-cloud/tasks');

  // Instantiates a client.
  const client = new 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 payload = 'hello';

  // Construct the fully qualified queue name.
  const parent = client.queuePath(project, location, queue);

  const task = {
    appEngineHttpRequest: {
      httpMethod: 'POST',
      relativeUri: '/log_payload',
    },
  };

  if (payload) {
    task.appEngineHttpRequest.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}`);

Samples

Samples are in the samples/ directory. The samples' README.md has instructions for running the samples.

Sample	Source Code	Try it
Cloud Tasks Create HTTP Target	source code
Cloud Tasks Create HTTP Target with Token	source code
Create Queue	source code
Cloud Tasks Create App Engine Target	source code
Delete Queue	source code
List Queues	source code
Quickstart	source code
Server	source code

The Cloud Tasks Node.js Client API Reference documentation also contains samples.

Versioning

This library follows Semantic Versioning.

This library is considered to be General Availability (GA). This means it is stable; the code surface will not change in backwards-incompatible ways unless absolutely necessary (e.g. because of critical security issues) or with an extensive deprecation period. Issues and requests against GA libraries are addressed with the highest priority.

More Information: Google Cloud Platform Launch Stages

Contributing

Contributions welcome! See the Contributing Guide.

License

Apache Version 2.0

See LICENSE