public void TestSharedSourceStream() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-N"); stream = HealthCountsStream.GetInstance(key, 10, 100); var latch = new CountdownEvent(1); var allEqual = new AtomicBoolean(false); var o1 = stream .Observe() .Take(10) .ObserveOn(TaskPoolScheduler.Default); var o2 = stream .Observe() .Take(10) .ObserveOn(TaskPoolScheduler.Default); var zipped = Observable.Zip(o1, o2, (healthCounts, healthCounts2) => { return(healthCounts == healthCounts2); // we want object equality }); var reduced = zipped.Aggregate(true, (a, b) => { return(a && b); }).Select(n => n); var rdisp = reduced.Subscribe( (b) => { output.WriteLine(Time.CurrentTimeMillis + " : " + Thread.CurrentThread.ManagedThreadId + " Reduced OnNext : " + b); allEqual.Value = b; }, (e) => { output.WriteLine(Time.CurrentTimeMillis + " : " + Thread.CurrentThread.ManagedThreadId + " Reduced OnError : " + e); output.WriteLine(e.ToString()); latch.SignalEx(); }, () => { output.WriteLine(Time.CurrentTimeMillis + " : " + Thread.CurrentThread.ManagedThreadId + " Reduced OnCompleted"); latch.SignalEx(); }); for (var i = 0; i < 10; i++) { HystrixCommand <int> cmd = Command.From(GroupKey, key, HystrixEventType.SUCCESS, 20); cmd.Execute(); } Assert.True(latch.Wait(10000), "CountdownEvent was not set!"); Assert.True(allEqual.Value); rdisp.Dispose(); // we should be getting the same object from both streams. this ensures that multiple subscribers don't induce extra work }
public void TestFallbackMissing() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-K"); stream = HealthCountsStream.GetInstance(key, 10, 100); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(10).Subscribe(new LatchedObserver(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.True(false, "Interrupted ex"); } output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.Equal(1L, stream.Latest.ErrorCount); Assert.Equal(1L, stream.Latest.TotalRequests); }
public async Task TestMultipleEventsOverTimeGetStoredAndAgeOut() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-M"); var latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); var cmd1 = CommandStreamTest.Command.From(GroupKey, key, HystrixEventType.SUCCESS, 20); var cmd2 = CommandStreamTest.Command.From(GroupKey, key, HystrixEventType.FAILURE, 10); // by doing a take(30), we ensure that all rolling counts go back to 0 latchSubscription = stream.Observe().Take(30 + LatchedObserver.STABLE_TICK_COUNT).Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); await cmd1.Observe(); await cmd2.Observe(); Assert.True(latch.Wait(10000), "CountdownEvent was not set!"); output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.Equal(0L, stream.Latest.ErrorCount); Assert.Equal(0L, stream.Latest.TotalRequests); }
public void TestMultipleEventsOverTimeGetStoredAndAgeOut() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-M"); stream = HealthCountsStream.GetInstance(key, 10, 100); // by doing a take(30), we ensure that all rolling counts go back to 0 CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(30).Subscribe(new LatchedObserver(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.True(false, "Interrupted ex"); } output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.Equal(0L, stream.Latest.ErrorCount); Assert.Equal(0L, stream.Latest.TotalRequests); }
public async Task TestRequestFromCache() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-F"); var latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); var cmd1 = Command.From(GroupKey, key, HystrixEventType.SUCCESS, 0); var cmd2 = Command.From(GroupKey, key, HystrixEventType.RESPONSE_FROM_CACHE); var cmd3 = Command.From(GroupKey, key, HystrixEventType.RESPONSE_FROM_CACHE); latchSubscription = stream.Observe().Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); await cmd1.Observe(); await cmd2.Observe(); await cmd3.Observe(); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); Assert.Equal(0L, stream.Latest.ErrorCount); Assert.Equal(1L, stream.Latest.TotalRequests); // responses from cache should not show up here }
public void TestRequestFromCache() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-F"); stream = HealthCountsStream.GetInstance(key, 10, 100); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(10).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(); try { Assert.True(latch.Wait(10000)); } catch (Exception) { Assert.True(false, "Interrupted ex"); } output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.Equal(0L, stream.Latest.ErrorCount); Assert.Equal(1L, stream.Latest.TotalRequests); // responses from cache should not show up here }
public void TestSemaphoreRejected() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-H"); stream = HealthCountsStream.GetInstance(key, 10, 100); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(10).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, 400, 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 c in saturators) { new Thread(new ThreadStart(() => c.Observe())).Start(); } try { Time.Wait(100); } catch (Exception ie) { Assert.True(false, ie.Message); } rejected1.Observe(); rejected2.Observe(); try { Assert.True(latch.Wait(10000)); } catch (Exception) { Assert.True(false, "Interrupted ex"); } output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.True(rejected1.IsResponseSemaphoreRejected); Assert.True(rejected2.IsResponseSemaphoreRejected); // should only see failures here, not SHORT-CIRCUITS Assert.Equal(2L, stream.Latest.ErrorCount); Assert.Equal(12L, stream.Latest.TotalRequests); }
public void TestThreadPoolRejected() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-I"); stream = HealthCountsStream.GetInstance(key, 10, 100); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(10).Subscribe(new LatchedObserver(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, 400)); } 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.True(false, 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); Assert.Equal(2L, stream.Latest.ErrorCount); Assert.Equal(12L, stream.Latest.TotalRequests); }
public void TestFallbackRejection() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-L"); stream = HealthCountsStream.GetInstance(key, 10, 100); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(10).Subscribe(new LatchedObserver(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 ex) { Assert.True(false, ex.Message); } rejection1.Observe(); rejection2.Observe(); try { Assert.True(latch.Wait(10000)); } catch (Exception) { Assert.True(false, "Interrupted ex"); } output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.Equal(7L, stream.Latest.ErrorCount); Assert.Equal(7L, stream.Latest.TotalRequests); }
public void TestShortCircuited() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-G"); stream = HealthCountsStream.GetInstance(key, 10, 100); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(10).Subscribe(new LatchedObserver(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 then 5 FALLBACK_SUCCESSes Command failure1 = Command.From(groupKey, key, HystrixEventType.FAILURE, 20); Command failure2 = Command.From(groupKey, key, HystrixEventType.FAILURE, 20); Command failure3 = Command.From(groupKey, key, HystrixEventType.FAILURE, 20); Command shortCircuit1 = Command.From(groupKey, key, HystrixEventType.SUCCESS); Command shortCircuit2 = Command.From(groupKey, key, HystrixEventType.SUCCESS); failure1.Observe(); failure2.Observe(); failure3.Observe(); try { Time.Wait(500); } catch (Exception ie) { Assert.False(true, ie.Message); } shortCircuit1.Observe(); shortCircuit2.Observe(); try { Assert.True(latch.Wait(10000)); } catch (Exception) { Assert.True(false, "Interrupted ex"); } Assert.True(shortCircuit1.IsResponseShortCircuited); Assert.True(shortCircuit2.IsResponseShortCircuited); output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); // should only see failures here, not SHORT-CIRCUITS Assert.Equal(3L, stream.Latest.ErrorCount); Assert.Equal(3L, stream.Latest.TotalRequests); }
public void TestEmptyStreamProducesZeros() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-A"); var latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); latchSubscription = stream.Observe().Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); Assert.Equal(0L, stream.Latest.ErrorCount); Assert.Equal(0L, stream.Latest.TotalRequests); }
public void TestEmptyStreamProducesZeros() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-A"); stream = HealthCountsStream.GetInstance(key, 10, 100); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(10).Subscribe(new LatchedObserver(output, latch)); // no writes Assert.True(latch.Wait(10000), "CountdownEvent was not set!"); output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.Equal(0L, stream.Latest.ErrorCount); Assert.Equal(0L, stream.Latest.TotalRequests); }
public async Task TestSemaphoreRejected() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-H"); var saturators = new List <Command>(); var latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); for (var i = 0; i < 10; i++) { saturators.Add(Command.From(GroupKey, key, HystrixEventType.SUCCESS, 500, ExecutionIsolationStrategy.SEMAPHORE)); } var rejected1 = Command.From(GroupKey, key, HystrixEventType.SUCCESS, 0, ExecutionIsolationStrategy.SEMAPHORE); var rejected2 = Command.From(GroupKey, key, HystrixEventType.SUCCESS, 0, ExecutionIsolationStrategy.SEMAPHORE); latchSubscription = stream.Observe().Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); // 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 var tasks = new List <Task>(); foreach (var saturator in saturators) { tasks.Add(Task.Run(() => saturator.Execute())); } await Task.Delay(50); tasks.Add(Task.Run(() => rejected1.Execute())); tasks.Add(Task.Run(() => rejected2.Execute())); Task.WaitAll(tasks.ToArray()); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); Assert.True(rejected1.IsResponseSemaphoreRejected, "rejected1 not rejected"); Assert.True(rejected2.IsResponseSemaphoreRejected, "rejected2 not rejected"); // should only see failures here, not SHORT-CIRCUITS Assert.Equal(2L, stream.Latest.ErrorCount); Assert.Equal(12L, stream.Latest.TotalRequests); }
public void TestSingleBadRequest() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-E"); stream = HealthCountsStream.GetInstance(key, 10, 100); CountdownEvent latch = new CountdownEvent(1); stream.Observe().Take(10).Subscribe(new LatchedObserver(output, latch)); Command cmd = Command.From(groupKey, key, HystrixEventType.BAD_REQUEST); cmd.Observe(); Assert.True(latch.Wait(10000), "CountdownEvent was not set!"); output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.Equal(0L, stream.Latest.ErrorCount); Assert.Equal(0L, stream.Latest.TotalRequests); }
public async Task TestShortCircuited() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-G"); var latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); var failure1 = Command.From(GroupKey, key, HystrixEventType.FAILURE, 0); var failure2 = Command.From(GroupKey, key, HystrixEventType.FAILURE, 0); var failure3 = Command.From(GroupKey, key, HystrixEventType.FAILURE, 0); var shortCircuit1 = Command.From(GroupKey, key, HystrixEventType.SUCCESS); var shortCircuit2 = Command.From(GroupKey, key, HystrixEventType.SUCCESS); latchSubscription = stream.Observe().Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); // 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 then 5 FALLBACK_SUCCESSes await failure1.Observe(); await failure2.Observe(); await failure3.Observe(); output.WriteLine(Time.CurrentTimeMillis + " Waiting for health window to change"); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); output.WriteLine(Time.CurrentTimeMillis + " Running short circuits"); await shortCircuit1.Observe(); await shortCircuit2.Observe(); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); Assert.True(shortCircuit1.IsResponseShortCircuited); Assert.True(shortCircuit2.IsResponseShortCircuited); // should only see failures here, not SHORT-CIRCUITS Assert.Equal(3L, stream.Latest.ErrorCount); Assert.Equal(3L, stream.Latest.TotalRequests); }
public async Task TestFallbackRejection() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-L"); var fallbackSaturators = new List <Command>(); var latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); for (var i = 0; i < 5; i++) { fallbackSaturators.Add(CommandStreamTest.Command.From(GroupKey, key, HystrixEventType.FAILURE, 0, HystrixEventType.FALLBACK_SUCCESS, 500)); } var rejection1 = CommandStreamTest.Command.From(GroupKey, key, HystrixEventType.FAILURE, 0, HystrixEventType.FALLBACK_SUCCESS, 0); var rejection2 = CommandStreamTest.Command.From(GroupKey, key, HystrixEventType.FAILURE, 0, HystrixEventType.FALLBACK_SUCCESS, 0); latchSubscription = stream.Observe().Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); // 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 var tasks = new List <Task>(); foreach (var saturator in fallbackSaturators) { tasks.Add(saturator.ExecuteAsync()); } await Task.Delay(50); output.WriteLine("ReqLog1 @ " + Time.CurrentTimeMillis + " " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); await Assert.ThrowsAsync <HystrixRuntimeException>(async() => await rejection1.Observe()); await Assert.ThrowsAsync <HystrixRuntimeException>(async() => await rejection2.Observe()); output.WriteLine("ReqLog2 @ " + Time.CurrentTimeMillis + " " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Task.WaitAll(tasks.ToArray()); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); Assert.Equal(7L, stream.Latest.ErrorCount); Assert.Equal(7L, stream.Latest.TotalRequests); }
public void TestThreadPoolRejected() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-I"); var saturators = new List <Command>(); var latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); for (var i = 0; i < 10; i++) { saturators.Add(CommandStreamTest.Command.From(GroupKey, key, HystrixEventType.SUCCESS, 400)); } var rejected1 = CommandStreamTest.Command.From(GroupKey, key, HystrixEventType.SUCCESS, 0); var rejected2 = CommandStreamTest.Command.From(GroupKey, key, HystrixEventType.SUCCESS, 0); latchSubscription = stream.Observe().Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); // 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 var tasks = new List <Task>(); foreach (var saturator in saturators) { tasks.Add(saturator.ExecuteAsync()); } tasks.Add(rejected1.ExecuteAsync()); tasks.Add(rejected2.ExecuteAsync()); Task.WaitAll(tasks.ToArray()); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); Assert.True(rejected1.IsResponseThreadPoolRejected, "rejected1 not rejected"); Assert.True(rejected2.IsResponseThreadPoolRejected, "rejected2 not rejected"); Assert.Equal(2L, stream.Latest.ErrorCount); Assert.Equal(12L, stream.Latest.TotalRequests); }
public async Task TestSingleSuccess() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-B"); var latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); var cmd = Command.From(GroupKey, key, HystrixEventType.SUCCESS, 20); latchSubscription = stream.Observe().Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); await cmd.Observe(); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); Assert.Equal(0L, stream.Latest.ErrorCount); Assert.Equal(1L, stream.Latest.TotalRequests); }
public async Task TestFallbackMissing() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-K"); var latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); var cmd = CommandStreamTest.Command.From(GroupKey, key, HystrixEventType.FAILURE, 20, HystrixEventType.FALLBACK_MISSING); latchSubscription = stream.Observe().Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); await Assert.ThrowsAsync <HystrixRuntimeException>(async() => await cmd.Observe()); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); Assert.Equal(1L, stream.Latest.ErrorCount); Assert.Equal(1L, stream.Latest.TotalRequests); }
public async void TestSingleBadRequest() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-E"); CountdownEvent latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); Command cmd = CommandStreamTest.Command.From(groupKey, key, HystrixEventType.BAD_REQUEST); latchSubscription = stream.Observe().Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); await Assert.ThrowsAsync <HystrixBadRequestException>(async() => await cmd.Observe()); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); Assert.Equal(0L, stream.Latest.ErrorCount); Assert.Equal(0L, stream.Latest.TotalRequests); }
public async Task TestSingleFailure() { var key = HystrixCommandKeyDefault.AsKey("CMD-Health-C"); var latch = new CountdownEvent(1); var observer = new LatchedObserver(output, latch); stream = HealthCountsStream.GetInstance(key, 10, 100); var cmd = Command.From(GroupKey, key, HystrixEventType.FAILURE, 0); latchSubscription = stream.Observe().Subscribe(observer); Assert.True(Time.WaitUntil(() => observer.StreamRunning, 1000), "Stream failed to start"); await cmd.Observe(); Assert.True(WaitForLatchedObserverToUpdate(observer, 1, 500, output), "Latch took to long to update"); output.WriteLine("ReqLog : " + HystrixRequestLog.CurrentRequestLog.GetExecutedCommandsAsString()); Assert.Equal(1L, stream.Latest.ErrorCount); Assert.Equal(1L, stream.Latest.TotalRequests); }
public void TestTwoSubscribersOneUnsubscribes() { IHystrixCommandKey key = HystrixCommandKeyDefault.AsKey("CMD-Health-O"); stream = HealthCountsStream.GetInstance(key, 10, 100); CountdownEvent latch1 = new CountdownEvent(1); CountdownEvent latch2 = new CountdownEvent(1); AtomicInteger healthCounts1 = new AtomicInteger(0); AtomicInteger healthCounts2 = new AtomicInteger(0); IDisposable s1 = stream .Observe() .Take(10) .ObserveOn(TaskPoolScheduler.Default) .Finally(() => { latch1.SignalEx(); }) .Subscribe( (healthCounts) => { output.WriteLine((DateTime.Now.Ticks / 10000) + " : " + Thread.CurrentThread.ManagedThreadId + " : Health 1 OnNext : " + healthCounts); healthCounts1.IncrementAndGet(); }, (e) => { output.WriteLine((DateTime.Now.Ticks / 10000) + " : " + Thread.CurrentThread.ManagedThreadId + " : Health 1 OnError : " + e); latch1.SignalEx(); }, () => { output.WriteLine((DateTime.Now.Ticks / 10000) + " : " + Thread.CurrentThread.ManagedThreadId + " : Health 1 OnCompleted"); latch1.SignalEx(); }); IDisposable s2 = stream .Observe() .Take(10) .ObserveOn(TaskPoolScheduler.Default) .Finally(() => { latch2.SignalEx(); }) .Subscribe( (healthCounts) => { output.WriteLine((DateTime.Now.Ticks / 10000) + " : " + Thread.CurrentThread.ManagedThreadId + " : Health 2 OnNext : " + healthCounts + " : " + healthCounts2.Value); healthCounts2.IncrementAndGet(); }, (e) => { output.WriteLine((DateTime.Now.Ticks / 10000) + " : " + Thread.CurrentThread.ManagedThreadId + " : Health 2 OnError : " + e); latch2.SignalEx(); }, () => { output.WriteLine((DateTime.Now.Ticks / 10000) + " : " + Thread.CurrentThread.ManagedThreadId + " : Health 2 OnCompleted"); latch2.SignalEx(); }); // execute 5 commands, then unsubscribe from first stream. then execute the rest for (int i = 0; i < 10; i++) { HystrixCommand <int> cmd = Command.From(groupKey, key, HystrixEventType.SUCCESS, 20); cmd.Execute(); if (i == 5) { s1.Dispose(); } } Assert.True(stream.IsSourceCurrentlySubscribed); // only 1/2 subscriptions has been cancelled Assert.True(latch1.Wait(10000)); Assert.True(latch2.Wait(10000)); output.WriteLine("s1 got : " + healthCounts1.Value + ", s2 got : " + healthCounts2.Value); Assert.True(healthCounts1.Value > 0); Assert.True(healthCounts2.Value > 0); Assert.True(healthCounts2.Value > healthCounts1.Value); }