module ActiveJob::QueueName::ClassMethods

def queue_as(part_name=nil, &block)
  if block_given?
    self.queue_name = block
  else
    self.queue_name = queue_name_from_part(part_name)
  end
end

def queue_name_from_part(part_name) #:nodoc:
  queue_name = part_name.to_s.presence || default_queue_name
  name_parts = [queue_name_prefix.presence, queue_name]
  name_parts.compact.join('_')
end