Rails: Cancelling a scheduled job in Sidekiq

Question

So I have a Sidekiq worker in my model which looks like this:

class Perk < ActiveRecord::Base

include Sidekiq::Worker
include Sidekiq::Status::Worker

after_save :update_release_time

def update_release_time
  if self.release_time_changed?
    #if scheduled job already exists then cancel and reschedule
    #  Sidekiq::Status.cancel scheduled_job_id
    #  scheduled_job_id = NotifierWorker.perform_at(time.seconds.from_now, .....)
    #elsif scheduled job doesn't exist, then schedule for the first time
    #  scheduled_job_id = NotifierWorker.perform_at(time.seconds.from_now, .....)
    #end
  end
end
end

So basically, my code checks if the release time has changed. If it has, then it has to cancel the previously scheduled job and schedule it at a new time. How do I achieve this i.e what would go in place of my pseudo-code? How do I check if scheduled_job_id exists and then fetch its id?

Answer 1

The API documentation has an overview of what you can do but you really need to dive into the source to discover all the capabilities.

You can do this but it won't be efficient. It's a linear scan for find a scheduled job by JID.

require 'sidekiq/api'
Sidekiq::ScheduledSet.new.find_job(jid).try(:delete)

Alternatively your job can look to see if it's still relevant when it runs.