migrate_concurrently.rb

class MigrateConcurrently
  ...
  def perform
    ...
    Logger.info(
      ...
      cycle: cycles.current,
      max_cycles: cycles.max,
    )

    if cycles.max?
      ...
    end

    cycles.next
    perform
  end

  private

  def cycles
    @cycles ||= Cycles.new(max: 2)
  end
end