rails--rails/activejob/lib/active_job/queue_adapters/que_adapter.rb

require 'que'

module ActiveJob
  module QueueAdapters
    # == Que adapter for Active Job
    #
    # Que is a high-performance alternative to DelayedJob or QueueClassic that
    # improves the reliability of your application by protecting your jobs with
    # the same ACID guarantees as the rest of your data. Que is a queue for
    # Ruby and PostgreSQL that manages jobs using advisory locks.
    #
    # Read more about Que {here}[https://github.com/chanks/que].
    #
    # To use Que set the queue_adapter config to +:que+.
    #
    #   Rails.application.config.active_job.queue_adapter = :que
    class QueAdapter
      class << self
        def enqueue(job) #:nodoc:
          JobWrapper.enqueue job.serialize, queue: job.queue_name
        end

        def enqueue_at(job, timestamp) #:nodoc:
          JobWrapper.enqueue job.serialize, queue: job.queue_name, run_at: Time.at(timestamp)
        end
      end

      class JobWrapper < Que::Job #:nodoc:
        def run(job_data)
          Base.execute job_data
        end
      end
    end
  end
end