This add-on is operated by ACK Foundry

Simple Faktory hosting for Heroku

Last updated January 29, 2018

ACK Foundry is an add-on that provides Faktory as a service. Faktory is a high-performance job management server that handles queueing, retrying, and scheduling of asynchronous background jobs from almost any web framework.

ACK Foundry provides access to the Faktory web UI interface (accessible from any web browser), as well the core Faktory API. Client libraries for a variety of languages are available here.

Provisioning the add-on

ACK Foundry can be attached to a Heroku application via the CLI:

$ heroku addons:create ackfoundry
-----> Adding ackfoundry to sharp-mountain-4005... done, v18 (free)

After you provision ACK Foundry, the ACK_FOUNDRY_API_URL config var is available in your app’s configuration. It contains the canonical root API URL for your new Faktory instance.

ACK Foundry also sets the ACK_FOUNDRY_WEB_URL config var, which contains the URL for your Faktory web UI.

You can confirm the values of these config vars with the heroku config:get command:

$ heroku config:get ACK_FOUNDRY_API_URL
tcp://:pass@shared.ackfoundry.com:port

After you install ACK Foundry, your application should be configured to fully integrate with the add-on.

Local setup

It’s best to run Faktory locally to ensure parity between environments. You can install it directly on either Linux or macOS, and it is also distributed as a docker image for easy setup in development.

Setup using Docker

Full instructions on installing Faktory on any supported environment can be found in the Faktory wiki. However, if you have access to Docker, you can run Faktory easily with a single command:

$ docker run --rm -it -p 127.0.0.1:7419:7419 -p 127.0.0.1:7420:7420 contribsys/faktory:latest -b 0.0.0.0:7419

Once the container starts, you’ll have access to the Faktory server at tcp://localhost:7419 and the web interface at http://localhost:7420.

Using with Rails

Ruby on Rails applications need to use the Ruby client for Faktory.

Install the client

To use the client, add the following entry to your Gemfile:

gem 'faktory_worker_ruby'

Then, update application dependencies with bundler:

$ bundle install

Build a job

The Faktory client allows you to create workers that are responsible for executing the long-running code of your business logic. The faktory_worker_ruby library doesn’t currently have an ActiveJob integration, so you need to include the Faktory::Job module in your workers. If you want to prevent duplication and repetitive typing, you can include it in the ApplicationJob class generated by Rails:

# app/jobs/application_job.rb

class ApplicationJob
  include Faktory::Job
end

Now to create a new worker, just inherit from this main job:

class MyJob < ApplicationJob
  def perform(...)
    # Something that takes a while...
  end
end

Queue a job

Jobs can be queued for execution by calling perform_async on the job class:

MyJob.perform_async(...)

Run your workers

The last step to running Faktory locally is to run the process that will actually execute your job by adding the following to your Procfile:

worker: bundle exec faktory-worker

Using with Go

Go applications need to use the Go client for Faktory.

Install the client

Run the following command to install the Go client:

$ go get -u github.com/contribsys/faktory_worker_go

Build a job

To implement a worker in Go, simply define a func with your long-running logic:

import (
  worker "github.com/contribsys/faktory_worker_go"
)

func myFunc(ctx worker.Context, args ...interface{}) error {
  fmt.Println("Working on job", ctx.Jid())
  return nil
}

Queue a job

Jobs can be queued in the Go client like this:

import (
  faktory github.com/contribsys/faktory/client
)

client, err := faktory.Open()
job := faktory.NewJob("MyJob")
err = client.Push(job)

Run your workers

To run your workers in the Go client, you need to set up the worker manager:

func main() {
  mgr := worker.NewManager()

  // register your job types and the associated function
  mgr.Register("MyJob", myFunc)

  // Set concurrency and queue options
  mgr.Concurrency = 20
  mgr.Queues = []string("critical", "default", "bulk")

  // Start processing jobs
  mgr.Run()
}

Using with Node.js

Node.js applications need to use the Node client for Faktory.

Install the client

Install the Node client with npm like so:

$ npm install faktory-worker

Build a job

A job function can be a sync or async function. Simply return a promise or use await in your async function to perform async tasks during your job. If you return early or don’t await properly, the job will be ACKed when the function returns.

const faktory = require('faktory-worker');

faktory.register('MyJob', async (id, size) => {
  await somethingAsync(id);
}

Queue a job

const faktory = require('faktory-worker');

const client = await faktory.connect();

client.push({
  queue: 'default',
  jobtype: 'MyJob',
  args: []
});

Run your workers

To begin polling for jobs:

faktory.work();

Using with PHP

PHP applications need to use the PHP client for Faktory.

Install the client

Install the PHP client via Composer like so:

$ composer require basekit/faktory_worker_php

Build a job

A job is just a function registered with your Faktory worker:

function ($job) {
  echo "Printing from a job\n";
  var_dump($job);
}

Queue a job

$client = new FaktoryClient($faktoryHost, $faktoryPort);
$job = new FaktoryJob($id, $type, $args);
$client->push($job)

Run your workers

Jobs must be registered with the worker and queue configurations must be set before running the worker:

$client = new FaktoryClient($faktoryHost, $faktoryPort);
$worker = new FaktoryWorker($client);
$worker->register('somejob', function ($job) {
    echo "You got the job buddy!\n";
    var_dump($job);
});

$worker->setQueues(['critical', 'default', 'bulk']);
$worker->run();

Using with Python

Python applications need to use the Python client for Faktory.

Install the client

The Faktory Python client is distributed via pip:

$ pip install faktory

Build a job

Jobs in the Python client are just functions registered to the worker. To build a job, create a function containing all your long-running logic:

def my_job():
  return 0

Queue a job

import faktory

with faktory.connection() as client:
  client.queue('myJob', args=(1,2))

Run your workers

As with the other clients, any job functions must be registered along with any worker configuration prior to running the worker:

from faktory import Worker

w = Worker(queues=['default'], concurrency=1)
w.register('myJob', my_job)

w.run()

Migrating between plans

Use the heroku addons:upgrade command to migrate to a new plan.

$ heroku addons:upgrade ackfoundry:newplan
-----> Upgrading ackfoundry:newplan to sharp-mountain-4005... done, v18 ($49/mo)
       Your plan has been updated to: ackfoundry:newplan

Removing the add-on

You can remove ACK Foundry via the CLI:

$ heroku addons:destroy ackfoundry
-----> Removing ackfoundry from sharp-mountain-4005... done, v20 (free)

Support

All ACK Foundry support and runtime issues should be submitted via one of the Heroku Support channels. Any non-support related issues or product feedback is welcome at admin@ackfoundry.com.