Class: Nestene::Actor::DelayedScheduler

Inherits:
Object
  • Object
show all
Includes:
Celluloid, Celluloid::Notifications
Defined in:
lib/nestene/actor/delayed_scheduler.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DelayedScheduler

Returns a new instance of DelayedScheduler.



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# File 'lib/nestene/actor/delayed_scheduler.rb', line 10

def initialize
  subscribe('state_update', :update_schedule)
  @schedule = []
  @timer = nil
end

Instance Method Details

#schedule_methods ⇒ Object 



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# File 'lib/nestene/actor/delayed_scheduler.rb', line 36

def schedule_methods

  if @timer
    @timer.cancel
  end

  now = Time.now

  loop do
    (auton_id, delayed_method) = @schedule.shift

    if auton_id
      execute_in = delayed_method.execute_at - now
      if execute_in <= 0
        Celluloid::Actor["storage:%s" % auton_id].update do |state|
          delayed = state.queue.delayed.shift
          execute_in = delayed.execute_at - now
          if execute_in <= 0
            method = ScheduledMethod.new(delayed)
            state.queue.to_execute << method
          end
          if delayed.every
            delayed.execute_at = now + delayed.every
            state.queue.add_delayed(delayed)
          end
        end
      else
        @schedule.unshift [auton_id, delayed_method]
        break
      end
    else
      break
    end
  end

  unless @schedule.empty?
    if now >= @schedule.first[1].execute_at
      async.schedule_methods
    else
      to_wait = @schedule.first[1].execute_at - now
      @timer = after(to_wait){async.schedule_methods}
    end
  end

end

#schedule_struct ⇒ Object 



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# File 'lib/nestene/actor/delayed_scheduler.rb', line 16

def schedule_struct
  @schedule.to_structure
end

#update_schedule(topic, auton_id, state) ⇒ Object 



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# File 'lib/nestene/actor/delayed_scheduler.rb', line 21

def update_schedule topic, auton_id, state

  @schedule.delete_if{|e| e.first == auton_id}

  state.queue.delayed.each do |d|
    @schedule << [auton_id, d]
  end

  @schedule.sort_by!{|e| e[1].execute_at}

  async.schedule_methods

end