Class: Limiter::RateQueue

Inherits:
Object
  • Object
show all
Defined in:
lib/limiter/rate_queue.rb

Constant Summary collapse

EPOCH = 
Time.at(0)

Instance Method Summary collapse

Constructor Details

#initialize(size, interval: 60) ⇒ RateQueue

Returns a new instance of RateQueue.



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# File 'lib/limiter/rate_queue.rb', line 7

def initialize(size, interval: 60)
  @size = size
  @interval = interval

  @ring = Array.new(size, EPOCH)
  @head = 0
  @mutex = Mutex.new
end

Instance Method Details

#shift ⇒ Object 



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# File 'lib/limiter/rate_queue.rb', line 16

def shift
  time = nil

  @mutex.synchronize do
    time = @ring[@head]

    sleep_until(time + @interval)

    @ring[@head] = Time.now
    @head = (@head + 1) % @size
  end

  time
end