Class: CableRoom::ChannelTracker

Inherits:
Object
  • Object
show all
Defined in:
lib/cable_room/channel_tracker.rb

Defined Under Namespace

Classes: ThreadPool

Constant Summary collapse

BEAT_INTERVAL = 
5.seconds

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ChannelTracker

Returns a new instance of ChannelTracker.



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# File 'lib/cable_room/channel_tracker.rb', line 13

def initialize
  @room_channels = Set.new
  @monitor = Monitor.new

  @scheduler = Rufus::Scheduler.new

  at_exit do
    logger.info "Shutting down CableRoom"
    shutdown!
  end

  scheduler.every(BEAT_INTERVAL) do
    each_room_channel do |chan|
      chan.beat
    end
  end
end

Instance Attribute Details

#room_channels ⇒ Object (readonly)

Returns the value of attribute room_channels.



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# File 'lib/cable_room/channel_tracker.rb', line 11

def room_channels
  @room_channels
end

#scheduler ⇒ Object (readonly)

Returns the value of attribute scheduler.



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# File 'lib/cable_room/channel_tracker.rb', line 11

def scheduler
  @scheduler
end

Class Method Details

.instance ⇒ Object 



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# File 'lib/cable_room/channel_tracker.rb', line 3

def self.instance
  @instance ||= new
end

Instance Method Details

#each_room_channel(&blk) ⇒ Object 



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# File 'lib/cable_room/channel_tracker.rb', line 78

def each_room_channel(&blk)
  @room_channels.dup.each(&blk)
end

#shutdown! ⇒ Object 



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# File 'lib/cable_room/channel_tracker.rb', line 49

def shutdown!
  @monitor.synchronize do
    @shutdown = true

    scheduler.shutdown

    shutdown_rooms!

    worker_pool.executor.shutdown
    worker_pool.executor.wait_for_termination(5)
    worker_pool.executor.kill
  end
end

#shutdown? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/cable_room/channel_tracker.rb', line 45

def shutdown?
  @shutdown
end

#shutdown_rooms! ⇒ Object 



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# File 'lib/cable_room/channel_tracker.rb', line 63

def shutdown_rooms!
  @monitor.synchronize do
    each_room_channel do |chan|
      chan.initiate_shutdown("Server shutting down")
    end
  end

  count = 0
  loop do
    break if @room_channels.empty? || count >= 15
    sleep 1
    count += 1
  end
end

#track_room_channel(chan) ⇒ Object 



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# File 'lib/cable_room/channel_tracker.rb', line 36

def track_room_channel(chan)
  raise "Cannot add Room after shutdown" if @shutdown
  @room_channels << chan
end

#untrack_room_channel(chan) ⇒ Object 



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# File 'lib/cable_room/channel_tracker.rb', line 41

def untrack_room_channel(chan)
  @room_channels.delete(chan)
end

#worker_pool ⇒ Object 



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# File 'lib/cable_room/channel_tracker.rb', line 31

def worker_pool
  # TODO Pin Rooms to a specific thread so that they never have to worry about thread safety?
  @worker_pool || @monitor.synchronize { @worker_pool ||= ThreadPool.new(max_size: config.worker_pool_size) }
end