Class WindowRateControl

  • All Implemented Interfaces:
    RateControl

    public class WindowRateControl
    extends java.lang.Object
    implements RateControl

    An implementation of RateControl that limits the number of events within a time period.

    Events are kept in a queue and for each event the queue is first drained of the old events outside the time window, and then the new event is added to the queue. The size of the queue is maintained separately in an AtomicInteger and if it exceeds the max number of events then onEvent(Object) returns false.

    • Constructor Summary

      Constructors 
      Constructor Description
      WindowRateControl​(int maxEvents, java.time.Duration window)  
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean onEvent​(java.lang.Object event)
      Applications should call this method when they want to signal an event that is subject to rate control.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • WindowRateControl

        public WindowRateControl​(int maxEvents,
                                 java.time.Duration window)
    • Method Detail

      • onEvent

        public boolean onEvent​(java.lang.Object event)
        Description copied from interface: RateControl

        Applications should call this method when they want to signal an event that is subject to rate control.

        Implementations should return true if the event does not exceed the desired rate, or false to signal that the event exceeded the desired rate.

        Specified by:
        onEvent in interface RateControl
        Parameters:
        event - the event subject to rate control.
        Returns:
        true IFF the rate is within limits