unique_worker.rb

model.rb

UniqueQueueWorker.perform_async(CalendarSyncWorker, "from_google", 1)

unique_worker.rb

require 'sidekiq/api'

class UniqueQueueWorker
  def initialize(processor, *args)
    @processor, @args = processor, args
  end

  def exists?
    Sidekiq::Queue.new.any? { |job| job.klass == processor.to_s && job.args == args }
  end

  def enqueue
    processor.send(:perform_async, *args)
  end

  def self.perform_async(processor, *args)
    q = new(processor, *args)
    q.enqueue unless q.exists?
  end

  private

  attr_reader :processor, :args
end