run_in_threads.rb

def run_in_threads(*tasks)
  if Rails.env.test? || Rails.env.integration_test?
    tasks.each(&:call)
  else
    tasks.map do |task|
      Thread.new {
        ApplicationRecord.connection_pool.with_connection(&task)
      }
    end.each(&:join)
  end
end

xcall-run_in_threads.rb

run_in_threads(
  proc { turn_server_power_on },
  proc { enable_switch_ports },
  proc { set_server_boot_device }
)