public void TestMultipleEventsOverTimeGetStoredAndAgeOut() { IHystrixCommandGroupKey groupKey = HystrixCommandGroupKeyDefault.AsKey("ThreadPool-M"); IHystrixThreadPoolKey threadPoolKey = HystrixThreadPoolKeyDefault.AsKey("ThreadPool-M"); IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("RollingCounter-M"); stream = RollingThreadPoolEventCounterStream.GetInstance(threadPoolKey, 10, 250); stream.StartCachingStreamValuesIfUnstarted(); // by doing a take(20), we ensure that all rolling counts go back to 0 CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(20).Subscribe(GetSubscriber(output, latch)); CommandStreamTest.Command cmd1 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.SUCCESS, 20); CommandStreamTest.Command cmd2 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.FAILURE, 10); cmd1.Observe(); cmd2.Observe(); try { Assert.True(latch.Wait(10000)); } catch (Exception) { Assert.False(true, "Interrupted ex"); } // all commands should have aged out Assert.Equal(2, stream.Latest.Length); Assert.Equal(0, stream.GetLatestCount(ThreadPoolEventType.EXECUTED)); Assert.Equal(0, stream.GetLatestCount(ThreadPoolEventType.REJECTED)); }
public void TestEmptyStreamProducesZeros() { IHystrixCommandGroupKey groupKey = HystrixCommandGroupKeyDefault.AsKey("ThreadPool-A"); IHystrixThreadPoolKey threadPoolKey = HystrixThreadPoolKeyDefault.AsKey("ThreadPool-A"); IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("RollingCounter-A"); stream = RollingThreadPoolEventCounterStream.GetInstance(threadPoolKey, 10, 500); stream.StartCachingStreamValuesIfUnstarted(); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(5).Subscribe(GetSubscriber(output, latch)); // no writes try { Assert.True(latch.Wait(10000)); } catch (Exception) { Assert.False(true, "Interrupted ex"); } Assert.Equal(2, stream.Latest.Length); Assert.Equal(0, stream.GetLatestCount(ThreadPoolEventType.EXECUTED) + stream.GetLatestCount(ThreadPoolEventType.REJECTED)); }
public void TestFallbackMissing() { IHystrixCommandGroupKey groupKey = HystrixCommandGroupKeyDefault.AsKey("ThreadPool-K"); IHystrixThreadPoolKey threadPoolKey = HystrixThreadPoolKeyDefault.AsKey("ThreadPool-K"); IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("RollingCounter-K"); stream = RollingThreadPoolEventCounterStream.GetInstance(threadPoolKey, 10, 500); stream.StartCachingStreamValuesIfUnstarted(); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(5).Subscribe(GetSubscriber(output, latch)); CommandStreamTest.Command cmd = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.FAILURE, 20, HystrixEventType.FALLBACK_MISSING); cmd.Observe(); try { Assert.True(latch.Wait(10000)); } catch (Exception) { Assert.False(true, "Interrupted ex"); } Assert.Equal(2, stream.Latest.Length); Assert.Equal(1, stream.GetLatestCount(ThreadPoolEventType.EXECUTED)); Assert.Equal(0, stream.GetLatestCount(ThreadPoolEventType.REJECTED)); }
public void TestThreadPoolRejected() { IHystrixCommandGroupKey groupKey = HystrixCommandGroupKeyDefault.AsKey("ThreadPool-I"); IHystrixThreadPoolKey threadPoolKey = HystrixThreadPoolKeyDefault.AsKey("ThreadPool-I"); IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("RollingCounter-I"); stream = RollingThreadPoolEventCounterStream.GetInstance(threadPoolKey, 10, 500); stream.StartCachingStreamValuesIfUnstarted(); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(5).Subscribe(GetSubscriber(output, latch)); // 10 commands will saturate threadpools when called concurrently. // submit 2 more requests and they should be THREADPOOL_REJECTED // should see 10 SUCCESSes, 2 THREADPOOL_REJECTED and 2 FALLBACK_SUCCESSes List <CommandStreamTest.Command> saturators = new List <CommandStreamTest.Command>(); for (int i = 0; i < 10; i++) { saturators.Add(CommandStreamTest.Command.From(groupKey, key, HystrixEventType.SUCCESS, 200)); } CommandStreamTest.Command rejected1 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.SUCCESS, 0); CommandStreamTest.Command rejected2 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.SUCCESS, 0); foreach (CommandStreamTest.Command saturator in saturators) { saturator.Observe(); } try { Time.Wait(100); } catch (Exception ie) { Assert.False(true, ie.Message); } rejected1.Observe(); rejected2.Observe(); try { Assert.True(latch.Wait(10000)); } catch (Exception) { Assert.False(true, "Interrupted ex"); } output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.True(rejected1.IsResponseThreadPoolRejected); Assert.True(rejected2.IsResponseThreadPoolRejected); // none of these got executed on a thread-pool, so thread pool metrics should be 0 Assert.Equal(2, stream.Latest.Length); Assert.Equal(10, stream.GetLatestCount(ThreadPoolEventType.EXECUTED)); Assert.Equal(2, stream.GetLatestCount(ThreadPoolEventType.REJECTED)); }
public void TestRequestFromCache() { IHystrixCommandGroupKey groupKey = HystrixCommandGroupKeyDefault.AsKey("ThreadPool-F"); IHystrixThreadPoolKey threadPoolKey = HystrixThreadPoolKeyDefault.AsKey("ThreadPool-F"); IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("RollingCounter-F"); stream = RollingThreadPoolEventCounterStream.GetInstance(threadPoolKey, 10, 500); stream.StartCachingStreamValuesIfUnstarted(); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(5).Subscribe(new LatchedObserver(output, latch)); Command cmd1 = Command.From(groupKey, key, HystrixEventType.SUCCESS, 20); Command cmd2 = Command.From(groupKey, key, HystrixEventType.RESPONSE_FROM_CACHE); Command cmd3 = Command.From(groupKey, key, HystrixEventType.RESPONSE_FROM_CACHE); cmd1.Observe(); cmd2.Observe(); cmd3.Observe(); Assert.True(latch.Wait(10000), "CountdownEvent was not set!"); output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); // RESPONSE_FROM_CACHE should not show up at all in thread pool counters - just the success Assert.Equal(2, stream.Latest.Length); Assert.Equal(1, stream.GetLatestCount(ThreadPoolEventType.EXECUTED)); Assert.Equal(0, stream.GetLatestCount(ThreadPoolEventType.REJECTED)); }
public void TestSemaphoreRejected() { IHystrixCommandGroupKey groupKey = HystrixCommandGroupKeyDefault.AsKey("ThreadPool-H"); IHystrixThreadPoolKey threadPoolKey = HystrixThreadPoolKeyDefault.AsKey("ThreadPool-H"); IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("RollingCounter-H"); stream = RollingThreadPoolEventCounterStream.GetInstance(threadPoolKey, 10, 500); stream.StartCachingStreamValuesIfUnstarted(); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(5).Subscribe(new LatchedObserver(output, latch)); // 10 commands will saturate semaphore when called from different threads. // submit 2 more requests and they should be SEMAPHORE_REJECTED // should see 10 SUCCESSes, 2 SEMAPHORE_REJECTED and 2 FALLBACK_SUCCESSes List <Command> saturators = new List <Command>(); for (int i = 0; i < 10; i++) { saturators.Add(Command.From(groupKey, key, HystrixEventType.SUCCESS, 500, ExecutionIsolationStrategy.SEMAPHORE)); } Command rejected1 = Command.From(groupKey, key, HystrixEventType.SUCCESS, 0, ExecutionIsolationStrategy.SEMAPHORE); Command rejected2 = Command.From(groupKey, key, HystrixEventType.SUCCESS, 0, ExecutionIsolationStrategy.SEMAPHORE); foreach (Command saturator in saturators) { Task t = new Task( () => { saturator.Observe(); }, CancellationToken.None, TaskCreationOptions.LongRunning); t.Start(); } try { Time.Wait(100); } catch (Exception ie) { Assert.False(true, ie.Message); } rejected1.Observe(); rejected2.Observe(); Assert.True(latch.Wait(10000), "CountdownEvent was not set!"); output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.True(rejected1.IsResponseSemaphoreRejected); Assert.True(rejected2.IsResponseSemaphoreRejected); // none of these got executed on a thread-pool, so thread pool metrics should be 0 Assert.Equal(2, stream.Latest.Length); Assert.Equal(0, stream.GetLatestCount(ThreadPoolEventType.EXECUTED)); Assert.Equal(0, stream.GetLatestCount(ThreadPoolEventType.REJECTED)); }
public void TestFallbackRejection() { IHystrixCommandGroupKey groupKey = HystrixCommandGroupKeyDefault.AsKey("ThreadPool-L"); IHystrixThreadPoolKey threadPoolKey = HystrixThreadPoolKeyDefault.AsKey("ThreadPool-L"); IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("RollingCounter-L"); stream = RollingThreadPoolEventCounterStream.GetInstance(threadPoolKey, 10, 500); stream.StartCachingStreamValuesIfUnstarted(); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(5).Subscribe(GetSubscriber(output, latch)); // fallback semaphore size is 5. So let 5 commands saturate that semaphore, then // let 2 more commands go to fallback. they should get rejected by the fallback-semaphore List <CommandStreamTest.Command> fallbackSaturators = new List <CommandStreamTest.Command>(); for (int i = 0; i < 5; i++) { fallbackSaturators.Add(CommandStreamTest.Command.From(groupKey, key, HystrixEventType.FAILURE, 20, HystrixEventType.FALLBACK_SUCCESS, 400)); } CommandStreamTest.Command rejection1 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.FAILURE, 20, HystrixEventType.FALLBACK_SUCCESS, 0); CommandStreamTest.Command rejection2 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.FAILURE, 20, HystrixEventType.FALLBACK_SUCCESS, 0); foreach (CommandStreamTest.Command saturator in fallbackSaturators) { saturator.Observe(); } try { Time.Wait(70); } catch (Exception ie) { Assert.False(true, ie.Message); } rejection1.Observe(); rejection2.Observe(); try { Assert.True(latch.Wait(10000)); } catch (Exception) { Assert.False(true, "Interrupted ex"); } // all 7 commands executed on-thread, so should be executed according to thread-pool metrics Assert.Equal(2, stream.Latest.Length); Assert.Equal(7, stream.GetLatestCount(ThreadPoolEventType.EXECUTED)); Assert.Equal(0, stream.GetLatestCount(ThreadPoolEventType.REJECTED)); }
public void TestShortCircuited() { IHystrixCommandGroupKey groupKey = HystrixCommandGroupKeyDefault.AsKey("ThreadPool-G"); IHystrixThreadPoolKey threadPoolKey = HystrixThreadPoolKeyDefault.AsKey("ThreadPool-G"); IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("RollingCounter-G"); stream = RollingThreadPoolEventCounterStream.GetInstance(threadPoolKey, 10, 500); stream.StartCachingStreamValuesIfUnstarted(); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(5).Subscribe(GetSubscriber(output, latch)); //3 failures in a row will trip circuit. let bucket roll once then submit 2 requests. //should see 3 FAILUREs and 2 SHORT_CIRCUITs and each should see a FALLBACK_SUCCESS CommandStreamTest.Command failure1 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.FAILURE, 20); CommandStreamTest.Command failure2 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.FAILURE, 20); CommandStreamTest.Command failure3 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.FAILURE, 20); CommandStreamTest.Command shortCircuit1 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.SUCCESS); CommandStreamTest.Command shortCircuit2 = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.SUCCESS); failure1.Observe(); failure2.Observe(); failure3.Observe(); Time.Wait(150); shortCircuit1.Observe(); shortCircuit2.Observe(); try { Assert.True(latch.Wait(10000)); } catch (Exception) { Assert.False(true, "Interrupted ex"); } output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.True(shortCircuit1.IsResponseShortCircuited); Assert.True(shortCircuit2.IsResponseShortCircuited); //only the FAILUREs should show up in thread pool counters Assert.Equal(2, stream.Latest.Length); Assert.Equal(3, stream.GetLatestCount(ThreadPoolEventType.EXECUTED)); Assert.Equal(0, stream.GetLatestCount(ThreadPoolEventType.REJECTED)); }
public void TestSingleSuccess() { IHystrixCommandGroupKey groupKey = HystrixCommandGroupKeyDefault.AsKey("ThreadPool-B"); IHystrixThreadPoolKey threadPoolKey = HystrixThreadPoolKeyDefault.AsKey("ThreadPool-B"); IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("RollingCounter-B"); stream = RollingThreadPoolEventCounterStream.GetInstance(threadPoolKey, 10, 500); stream.StartCachingStreamValuesIfUnstarted(); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(5).Subscribe(new LatchedObserver(output, latch)); Command cmd = Command.From(groupKey, key, HystrixEventType.SUCCESS, 20); cmd.Observe(); Assert.True(latch.Wait(10000), "CountdownEvent was not set!"); Assert.Equal(2, stream.Latest.Length); Assert.Equal(1, stream.GetLatestCount(ThreadPoolEventType.EXECUTED)); Assert.Equal(0, stream.GetLatestCount(ThreadPoolEventType.REJECTED)); }