Throttle NServiceBus throughput when a custom check fails using the scheduler

ThrottleThroughputWhenCheckFailsUsingScheduler.cs

using System;
using NServiceBus;
using NServiceBus.Logging;

class ThrottleThroughputWhenCheckFailsUsingScheduler : IWantToRunWhenBusStartsAndStops
{
    NServiceBus.Unicast.UnicastBus bus;
    Schedule schedule;
    ILog Log = LogManager.GetLogger(typeof(CheckBreaker));

    bool throttled;
    int throttledLimit = 1;
    int unthrottledLimit = 0;

    public CheckBreaker(Schedule schedule, IBus bus)
    {
        this.schedule = schedule;
        this.bus = (NServiceBus.Unicast.UnicastBus)bus;
    }

    public void Start()
    {
        schedule.Every(TimeSpan.FromSeconds(5), "MyCustomTask", SomeCustomMethod);
    }

    public void Stop()
    {
    }

    void SomeCustomMethod()
    {
        var result = Check();

        Log.DebugFormat("Check: {0}", result);
        Log.DebugFormat("Throttled: {0}", throttled);

        var transport = bus.Transport;

        if (result && throttled)
        {
            transport.ChangeMaximumMessageThroughputPerSecond(unthrottledLimit);
            throttled = false;
            Log.InfoFormat("Disabled throttling");
        }

        if (!result && !throttled)
        {
            transport.ChangeMaximumMessageThroughputPerSecond(throttledLimit);
            throttled = true;
            Log.InfoFormat("Enabled throttling");
        }
    }

    int count;

    bool Check()
    {
        return count++ % 4 == 0;
    }
}