public void EnsureThreadPoolInstanceIsTheOneRegisteredWithMetricsPublisherAndThreadPoolCache()
{
HystrixPlugins.RegisterMetricsPublisher(new MyHystrixMetricsPublisher());
IHystrixThreadPoolKey threadPoolKey = HystrixThreadPoolKeyDefault.AsKey("threadPoolFactoryConcurrencyTest");
IHystrixThreadPool poolOne = new HystrixThreadPoolDefault(
threadPoolKey, HystrixThreadPoolOptionsTest.GetUnitTestPropertiesBuilder());
IHystrixThreadPool poolTwo = new HystrixThreadPoolDefault(
threadPoolKey, HystrixThreadPoolOptionsTest.GetUnitTestPropertiesBuilder());
Assert.Equal(poolOne.GetScheduler(), poolTwo.GetScheduler()); // Now that we get the threadPool from the metrics object, this will always be equal
HystrixMetricsPublisherThreadPoolContainer hystrixMetricsPublisherThreadPool =
(HystrixMetricsPublisherThreadPoolContainer)HystrixMetricsPublisherFactory
.CreateOrRetrievePublisherForThreadPool(threadPoolKey, null, null);
IHystrixTaskScheduler threadPoolExecutor = hystrixMetricsPublisherThreadPool.HystrixThreadPoolMetrics.TaskScheduler;
// assert that both HystrixThreadPools share the same ThreadPoolExecutor as the one in HystrixMetricsPublisherThreadPool
Assert.True(threadPoolExecutor.Equals(poolOne.GetScheduler()) && threadPoolExecutor.Equals(poolTwo.GetScheduler()));
Assert.False(threadPoolExecutor.IsShutdown);
// Now the HystrixThreadPool ALWAYS has the same reference to the ThreadPoolExecutor so that it no longer matters which
// wins to be inserted into the HystrixThreadPool.Factory.threadPools cache.
poolOne.Dispose();
poolTwo.Dispose();
}
private HystrixThreadPoolMetrics(IHystrixThreadPoolKey threadPoolKey, IHystrixTaskScheduler threadPool, IHystrixThreadPoolOptions properties) : base(null)
{
this.threadPoolKey = threadPoolKey;
this.threadPool = threadPool;
this.properties = properties;
rollingCounterStream = RollingThreadPoolEventCounterStream.GetInstance(threadPoolKey, properties);
cumulativeCounterStream = CumulativeThreadPoolEventCounterStream.GetInstance(threadPoolKey, properties);
rollingThreadPoolMaxConcurrencyStream = RollingThreadPoolMaxConcurrencyStream.GetInstance(threadPoolKey, properties);
}
public HystrixThreadPoolDefault(IHystrixThreadPoolKey threadPoolKey, IHystrixThreadPoolOptions propertiesDefaults)
{
_properties = HystrixOptionsFactory.GetThreadPoolOptions(threadPoolKey, propertiesDefaults);
_properties = propertiesDefaults ?? new HystrixThreadPoolOptions(threadPoolKey);
var concurrencyStrategy = HystrixPlugins.ConcurrencyStrategy;
_queueSize = _properties.MaxQueueSize;
_metrics = HystrixThreadPoolMetrics.GetInstance(threadPoolKey, concurrencyStrategy.GetTaskScheduler(_properties), _properties);
_taskScheduler = _metrics.TaskScheduler;
/* strategy: HystrixMetricsPublisherThreadPool */
HystrixMetricsPublisherFactory.CreateOrRetrievePublisherForThreadPool(threadPoolKey, _metrics, _properties);
}
public HystrixThreadPoolDefault(IHystrixThreadPoolKey threadPoolKey, IHystrixThreadPoolOptions propertiesDefaults)
{
this.properties = HystrixOptionsFactory.GetThreadPoolOptions(threadPoolKey, propertiesDefaults);
this.properties = propertiesDefaults ?? new HystrixThreadPoolOptions(threadPoolKey);
HystrixConcurrencyStrategy concurrencyStrategy = HystrixPlugins.ConcurrencyStrategy;
this.queueSize = properties.MaxQueueSize;
this.metrics = HystrixThreadPoolMetrics.GetInstance(threadPoolKey, concurrencyStrategy.GetTaskScheduler(properties), properties);
this.taskScheduler = this.metrics.TaskScheduler;
/* strategy: HystrixMetricsPublisherThreadPool */
HystrixMetricsPublisherFactory.CreateOrRetrievePublisherForThreadPool(threadPoolKey, this.metrics, this.properties);
}
public static HystrixThreadPoolMetrics GetInstance(IHystrixThreadPoolKey key, IHystrixTaskScheduler taskScheduler, IHystrixThreadPoolOptions properties)
{
return(Metrics.GetOrAddEx(key.Name, (k) => new HystrixThreadPoolMetrics(key, taskScheduler, properties)));
}
