Class TrafficCounter

  • Direct Known Subclasses:
    GlobalChannelTrafficCounter

    public class TrafficCounter
    extends Object

    TrafficCounter is associated with AbstractTrafficShapingHandler.

    A TrafficCounter has for goal to count the traffic in order to enable to limit the traffic or not, globally or per channel. It compute statistics on read and written bytes at the specified interval and call back the AbstractTrafficShapingHandler doAccounting method at every specified interval. If this interval is set to 0, therefore no accounting will be done and only statistics will be computed at each receive or write operations.
    • Constructor Detail

      • TrafficCounter

        public TrafficCounter​(AbstractTrafficShapingHandler trafficShapingHandler,
                              Timer timer,
                              String name,
                              long checkInterval)
        Constructor with the AbstractTrafficShapingHandler that hosts it, the Timer to use, its name, the checkInterval between two computations in millisecond.
        Parameters:
        trafficShapingHandler - the associated AbstractTrafficShapingHandler
        timer - Could be a HashedWheelTimer, might be null when used from GlobalChannelTrafficCounter.
        name - the name given to this monitor
        checkInterval - the checkInterval in millisecond between two computations.
    • Method Detail

      • milliSecondFromNano

        public static long milliSecondFromNano()
        Returns:
        the time in ms using nanoTime, so not real EPOCH time but elapsed time in ms.
      • start

        public void start()
        Start the monitoring process.
      • stop

        public void stop()
        Stop the monitoring process.
      • configure

        public void configure​(long newcheckInterval)
        Change checkInterval between two computations in millisecond.
      • getCheckInterval

        public long getCheckInterval()
        Returns:
        the current checkInterval between two computations of traffic counter in millisecond.
      • getLastReadThroughput

        public long getLastReadThroughput()
        Returns:
        the Read Throughput in bytes/s computes in the last check interval.
      • getLastWriteThroughput

        public long getLastWriteThroughput()
        Returns:
        the Write Throughput in bytes/s computes in the last check interval.
      • getLastReadBytes

        public long getLastReadBytes()
        Returns:
        the number of bytes read during the last check Interval.
      • getLastWrittenBytes

        public long getLastWrittenBytes()
        Returns:
        the number of bytes written during the last check Interval.
      • getCurrentReadBytes

        public long getCurrentReadBytes()
        Returns:
        the current number of bytes read since the last checkInterval.
      • getCurrentWrittenBytes

        public long getCurrentWrittenBytes()
        Returns:
        the current number of bytes written since the last check Interval.
      • getLastTime

        public long getLastTime()
        Returns:
        the Time in millisecond of the last check as of System.currentTimeMillis().
      • getCumulativeWrittenBytes

        public long getCumulativeWrittenBytes()
        Returns:
        the cumulativeWrittenBytes
      • getCumulativeReadBytes

        public long getCumulativeReadBytes()
        Returns:
        the cumulativeReadBytes
      • getLastCumulativeTime

        public long getLastCumulativeTime()
        Returns:
        the lastCumulativeTime in millisecond as of System.currentTimeMillis() when the cumulative counters were reset to 0.
      • getRealWrittenBytes

        public AtomicLong getRealWrittenBytes()
        Returns:
        the realWrittenBytes
      • getRealWriteThroughput

        public long getRealWriteThroughput()
        Returns:
        the realWriteThroughput
      • resetCumulativeTime

        public void resetCumulativeTime()
        Reset both read and written cumulative bytes counters and the associated absolute time from System.currentTimeMillis().
      • readTimeToWait

        @Deprecated
        public long readTimeToWait​(long size,
                                   long limitTraffic,
                                   long maxTime)
        Deprecated.
        Returns the time to wait (if any) for the given length message, using the given limitTraffic and the max wait time.
        Parameters:
        size - the recv size
        limitTraffic - the traffic limit in bytes per second
        maxTime - the max time in ms to wait in case of excess of traffic.
        Returns:
        the current time to wait (in ms) if needed for Read operation.
      • readTimeToWait

        public long readTimeToWait​(long size,
                                   long limitTraffic,
                                   long maxTime,
                                   long now)
        Returns the time to wait (if any) for the given length message, using the given limitTraffic and the max wait time.
        Parameters:
        size - the recv size
        limitTraffic - the traffic limit in bytes per second
        maxTime - the max time in ms to wait in case of excess of traffic.
        now - the current time
        Returns:
        the current time to wait (in ms) if needed for Read operation.
      • writeTimeToWait

        @Deprecated
        public long writeTimeToWait​(long size,
                                    long limitTraffic,
                                    long maxTime)
        Deprecated.
        Returns the time to wait (if any) for the given length message, using the given limitTraffic and the max wait time.
        Parameters:
        size - the write size
        limitTraffic - the traffic limit in bytes per second
        maxTime - the max time in ms to wait in case of excess of traffic.
        Returns:
        the current time to wait (in ms) if needed for Write operation.
      • writeTimeToWait

        public long writeTimeToWait​(long size,
                                    long limitTraffic,
                                    long maxTime,
                                    long now)
        Returns the time to wait (if any) for the given length message, using the given limitTraffic and the max wait time.
        Parameters:
        size - the write size
        limitTraffic - the traffic limit in bytes per second
        maxTime - the max time in ms to wait in case of excess of traffic.
        now - the current time
        Returns:
        the current time to wait (in ms) if needed for Write operation.
      • getName

        public String getName()
        Returns:
        the name