Credits to ROCKETSEAT for the original implementation

This documentation refers to the next version of Adonis Bull, which adds support to Adonis v5. If you are using Adonis 4.x, click here.

Table of Contents

• Why
• Getting Started
• Setup
  • Connections
• Initialization
  • ace command
  • http server
• Usage
  • Creating your job
  • Events
  • Processing the jobs
  • Simple job
  • Scheduled job
    • Other ways of using schedule
    • Using schedule with a third party lib
  • Advanced jobs
  • Exceptions
• Contributing
  • Contribution Guidelines
  • Code of Conduct
• License

Why

Using Bull with Adonis shouldn't be hard. It shouldn't require dozens of steps to configure it. That's why adonis-bull exists. It provides an easy way to use queues when developing applications with AdonisJS.

Getting Started

Let's start by installing the package in our project.

Yarn:

yarn add @rowboat/adonis-bull@alpha

NPM:

npm install @rowboat/adonis-bull@alpha

Setup

You can configure the project by running the following command:

node ace invoke @rowboat/adonis-bull

When prompted, you must choose between two start options: ace command or http server.

ps: If you don't know what option you should choose. Check the initialization session.

Connections

After executing the invoke command the config/bull.ts file will be created, where you can define the Redis connections. A local connection already exists by default.

To add more connections it is important to make sure that it is also defined in the contracts.

An important step is to set the environment variables in your .env and validate them in the env.ts file.

BULL_REDIS_HOST: Env.schema.string({ format: 'host' }),
BULL_REDIS_PORT: Env.schema.number(),
BULL_REDIS_PASSWORD: Env.schema.string.optional(),

Initialization

The bull can be started in two different ways and this was defined by you in the setup session.

ace command

The bull will be in a separate instance from the HTTP server. To initialize it you can execute the command:

node ace bull:listen

You can define a port with the --port flag and you can initialize the bull-board with the --board flag.

http server

When selecting this option a startup file will be created at start/bull.ts. The bull will be started together with its server and will share the same instance.

The start/bull.ts file will look like this:

import Bull from '@ioc:Rocketseat/Bull'
import Env from '@ioc:Adonis/Core/Env'

const PORT = 9999
const isDevelopment = Env.get('NODE_ENV') === 'development'

Bull.process()

if (isDevelopment) {
  Bull.ui(PORT)
}

The bull board will start in the development environment on port 9999.

Usage

Creating your job

Create a new job file by executing the following ace command:

node ace make:job userRegisterEmail

# ✔  create    app/Jobs/UserRegisterEmail.ts

This command will generate a file at app/Jobs and add the created job at start/jobs.ts.

const jobs = ['App/Jobs/UserRegisterEmail']

export default jobs

This is an example of how to implement a job for sending emails:

import { JobContract } from '@ioc:Rocketseat/Bull'
import Mail from '@ioc:Adonis/Addons/Mail'

export default class UserRegisterEmail implements JobContract {
  public key = 'UserRegisterEmail'

  public async handle(job) {
    const { data } = job // the 'data' variable has user data

    await Mail.send('emails.welcome', data, (message) => {
      message
        .to(data.email)
        .from('<from-email>')
        .subject('Welcome to yardstick')
    })

    return data
  }
}

You can override the default configs.

import { JobsOptions, QueueOptions, WorkerOptions, Job } from 'bullmq'

export default class UserRegisterEmail implements JobContract {
  ...
  public options: JobsOptions = {}

  public queueOptions: QueueOptions = {}

  public workerOptions: WorkerOptions = {}

  public concurrency = 1

...
}

Events

The package has support for all events triggered by bull.

To define an event you must prefix it with "on" and add the event name (e.g., onCompleted(), onActive(), onWaiting() and etc).

export default class UserRegisterEmail implements JobContract {
  ...
  public onCompleted(job, result) {}
  public onActive(job) {}
  ...
}

Processing the jobs

Simple job

You can share the job of any controller, hook or any other place you might like:

import User from 'App/Models/User'
import Bull from '@ioc:Rocketseat/Bull'
import Job from 'App/Jobs/UserRegisterEmail'

export default class UserController {
  store({ request, response }) {
    const data = request.only(['email', 'name', 'password'])

    const user = await User.create(data)

    Bull.add(new Job().key, user)
  }
}

Scheduled job

Sometimes it is necessary to schedule a job instead of shooting it imediately. You should use schedule for that:

import User from 'App/Models/User'
import ProductOnSale from 'App/Services/ProductOnSale'
import Bull from '@ioc:Rocketseat/Bull'
import Job from 'App/Jobs/UserRegisterEmail'
import parseISO from 'date-fns/parseISO'

export default class HolidayOnSaleController {
  store({ request, response }) {
    const data = request.only(['date', 'product_list']) // 2020-11-06T12:00:00

    const products = await ProductOnSale.create(data)

    Bull.schedule(new Job().key, products, parseISO(data.date))
  }
}

This job will be sent only on the specific date.

If a date has already passed, an error will occur.

Other ways of using schedule

Bull.schedule(key, data, new Date('2019-11-15 12:00:00'))
Bull.schedule(key, data, 60 * 1000) // 1 minute from now.

Using schedule with a third party lib

import humanInterval from 'human-interval'

Bull.schedule(key, data, humanInterval('2 hours')) // 2 hours from now

Advanced jobs

You can use the own Bull configs to improve your job:

Bull.add(key, data, {
  repeat: {
    cron: '0 30 12 * * WED,FRI',
  },
})

This job will run at 12:30 PM, on Wednesdays and Fridays.

Exceptions

To have better control over errors that can occur in jobs, events that fail can be handled by creating an ExceptionHandler:

node ace bull:exception

A BullHandler.ts file will be generated at App/Exceptions.

You can change this file to handle job errors as you prefer. Here is an example using Sentry:

import BullExceptionHandler from '@ioc:Rocketseat/Bull/BullExceptionHandler'
import { Job } from '@ioc:Rocketseat/Bull'
import Env from '@ioc:Adonis/Core/Env'
import Logger from '@ioc:Adonis/Core/Logger'
import Sentry from 'App/Services/Sentry'

const isDevelopment = Env.get('NODE_ENV') === 'development'

export default class JobExceptionHandler extends BullExceptionHandler {
  constructor() {
    super(Logger)
  }

  public async handle(error: Error, job: Job) {
    if (isDevelopment) {
      this.logger.error(`key=${job.name} id=${job.id} error=${error.message}`)
    } else {
      Sentry.configureScope((scope) => {
        scope.setExtra(job)
      })

      Sentry.captureException(error)
    }
  }
}

Contributing

Thank you for being interested in making this package better. We encourage everyone to help improve this project with new features, bug fixes, or performance improvements. Please take a little bit of your time to read our guide to make this process faster and easier.

Contribution Guidelines

To understand how to submit an issue, commit and create pull requests, check our Contribution Guidelines.

Code of Conduct

We expect you to follow our Code of Conduct. You can read it to understand what kind of behavior will and will not be tolerated.

License

MIT License © Rocketseat