How do I schedule recurring jobs in Active Job (Rails 4.2)?

Question

I found this Schedule one-time jobs in Rails but this only shows how schedule one-time. I am interested in scheduling a recurring job.

Delayed_job has this

self.delay(:run_at => 1.minute.from_now) 

How do I do something like that in Rails 4.2/Active Job?

Answer 1

Similar to rab3's answer, since ActiveJob has support for callbacks, I was thinking of doing something like

class MyJob < ActiveJob::Base   after_perform do |job|     # invoke another job at your time of choice      self.class.set(:wait => 10.minutes).perform_later(job.arguments.first)   end    def perform(the_argument)     # do your thing   end end 

activejob callbacks

Answer 2

If you want to delay the job execution to 10 minutes later, two options:

1. SomeJob.set(wait: 10.minutes).perform_later(record)

2. SomeJob.new(record).enqueue(wait: 10.minutes)

Delay to a specific moment from now use wait_until.

1. SomeJob.set(wait_until: Date.tomorrow.noon).perform_later(record)

2. SomeJob.new(record).enqueue(wait_until: Date.tomorrow.noon)

Details please refer to http://api.rubyonrails.org/classes/ActiveJob/Base.html.

For recurring jobs, you just put SomeJob.perform_now(record) in a cronjob (whenever).

If you use Heroku, just put SomeJob.perform_now(record) in a scheduled rake task. Please read more about scheduled rake task here: Heroku scheduler.