Automatic Server Restart (MCL handler)

automatic_server_restart.rb

module Mcl
  Mcl.reloadable(:AutomaticServerRestart)

  class AutomaticServerRestart < Handler
    def setup
      @stop_at = 1.hour.from_now
    end

    def tick!
      # only check every 240 MCL ticks == 60 seconds
      # wouldn't really hurt to check every tick though
      if app.eman.tick % 240 == 0
        if @stop_at && @stop_at.past?
          @stop_at = nil # don't call restart_server multiple times
          restart_server
        end
      end
    end

    def restart_server
      announce_server_restart
      sleep 3 # also blocks MCL

      # you could also invoke stop but be aware of
      # https://bugs.mojang.com/browse/MC-63802
      if true
        $mcl_reboot = true
      else
        $mcl.server.invoke("/stop")
      end
    end
  end
end

announce_server_restart is coming from here https://github.com/2called-chaos/mcl/blob/master/lib/mcl/handler/helper.rb#L38

why those methods get called: https://github.com/2called-chaos/mcl/blob/master/lib/mcl/handler/api.rb

why don't we have to reset @stop_at? Because MCL reboots when the server exits and therefore initializes all handlers again.