public void NewSubscriptionGetsAllMessages() { var dr = new DefaultDependencyResolver(); using (var bus = new MessageBus(dr)) { var subscriber = new TestSubscriber(new[] { "key" }); var wh = new ManualResetEventSlim(initialState: false); IDisposable subscription = null; try { bus.Publish("test", "key", "1").Wait(); subscription = bus.Subscribe(subscriber, null, (result, state) => { if (!result.Terminal) { var m = result.GetMessages().Single(); Assert.Equal("key", m.Key); Assert.Equal("value", m.GetString()); wh.Set(); return TaskAsyncHelper.True; } return TaskAsyncHelper.False; }, 10, null); bus.Publish("test", "key", "value").Wait(); Assert.True(wh.Wait(TimeSpan.FromSeconds(5))); } finally { if (subscription != null) { subscription.Dispose(); } } } }
public static IDisposable Run(int connections, int senders, string payload, int messageBufferSize = 10) { var resolver = new DefaultDependencyResolver(); var bus = new MessageBus(resolver); var countDown = new CountdownEvent(senders); var subscriptions = new List<IDisposable>(); var cancellationTokenSource = new CancellationTokenSource(); // Initialize performance counters for this run Utility.InitializePerformanceCounters(resolver, cancellationTokenSource.Token); for (int i = 0; i < connections; i++) { string identity = i.ToString(); var subscriber = new Subscriber(identity, new[] { "a", "b", "c" }); IDisposable subscription = bus.Subscribe(subscriber, cursor: null, callback: _ => TaskAsyncHelper.True, maxMessages: messageBufferSize); subscriptions.Add(subscription); } for (var i = 0; i < senders; i++) { ThreadPool.QueueUserWorkItem(_ => { while (!cancellationTokenSource.IsCancellationRequested) { string source = i.ToString(); bus.Publish(source, "a", payload); } countDown.Signal(); }); } return new DisposableAction(() => { cancellationTokenSource.Cancel(); // Wait for all senders to stop countDown.Wait(TimeSpan.FromMilliseconds(1000 * senders)); // Shut the bus down and wait for workers to stop bus.Dispose(); // Dispose of all the subscriptions subscriptions.ForEach(s => s.Dispose()); }); }
public void AddingEventAndSendingMessages() { var dr = new DefaultDependencyResolver(); using (var bus = new MessageBus(dr)) { var subscriber = new TestSubscriber(new[] { "a" }); int max = 100; var cd = new CountDownRange<int>(Enumerable.Range(0, max)); int prev = -1; IDisposable subscription = null; try { subscription = bus.Subscribe(subscriber, null, result => { foreach (var m in result.GetMessages()) { int n = Int32.Parse(m.Value); Assert.True(prev < n, "out of order"); prev = n; Assert.True(cd.Mark(n)); } return TaskAsyncHelper.True; }, 10); for (int i = 0; i < max; i++) { subscriber.AddEvent("b"); bus.Publish("test", "b", i.ToString()).Wait(); } Assert.True(cd.Wait(TimeSpan.FromSeconds(10))); } finally { if (subscription != null) { subscription.Dispose(); } } } }
public void PublishingDoesNotCreateTopic() { var dr = new DefaultDependencyResolver(); var configuration = dr.Resolve<IConfigurationManager>(); configuration.KeepAlive = null; using (var bus = new MessageBus(dr)) { bus.Publish("test", "key", "1").Wait(); Assert.Equal(0, bus.Topics.Count); Assert.False(bus.Topics.ContainsKey("key")); } }
public void SubscriptionWithCancelledTaskCanBeDisposed() { var dr = new DefaultDependencyResolver(); using (var bus = new MessageBus(dr)) { var subscriber = new TestSubscriber(new[] { "key" }); var wh = new ManualResetEventSlim(); IDisposable subscription = bus.Subscribe(subscriber, null, async (result, state) => { if (result.Terminal) { return false; } await Task.Delay(50); var tcs = new TaskCompletionSource<bool>(); tcs.SetCanceled(); wh.Set(); return await tcs.Task; }, 10, null); bus.Publish("me", "key", "hello"); wh.Wait(); subscription.Dispose(); } }
public void SubscriptionWithScaleoutCursorGetsOnlyNewMessages() { var dr = new DefaultDependencyResolver(); var passThroughMinfier = new PassThroughStringMinifier(); dr.Register(typeof(IStringMinifier), () => passThroughMinfier); using (var bus = new MessageBus(dr)) { Func<ISubscriber> subscriberFactory = () => new TestSubscriber(new[] { "key" }); var tcs = new TaskCompletionSource<Message[]>(); IDisposable subscription = null; try { // Set-up dummy subscription so the first Publish doesn't noop bus.Subscribe(subscriberFactory(), null, (result, state) => TaskAsyncHelper.True, 10, null).Dispose(); bus.Publish("test", "key", "badvalue").Wait(); subscription = bus.Subscribe(subscriberFactory(), "s-key,00000000", (result, state) => { tcs.TrySetResult(result.GetMessages().ToArray()); return TaskAsyncHelper.True; }, 10, null); bus.Publish("test", "key", "value"); Assert.True(tcs.Task.Wait(TimeSpan.FromSeconds(5))); foreach (var m in tcs.Task.Result) { Assert.Equal("key", m.Key); Assert.Equal("value", m.GetString()); } } finally { if (subscription != null) { subscription.Dispose(); } } } }
public void SubscriptionWithExistingCursorGetsAllMessagesAfterMessageBusRestart() { var dr = new DefaultDependencyResolver(); using (var bus = new MessageBus(dr)) { var subscriber = new TestSubscriber(new[] { "key" }); var wh = new ManualResetEvent(false); IDisposable subscription = null; try { subscription = bus.Subscribe(subscriber, "d-key,00000001", (result, state) => { foreach (var m in result.GetMessages()) { Assert.Equal("key", m.Key); Assert.Equal("value", m.GetString()); wh.Set(); } return TaskAsyncHelper.True; }, 10, null); bus.Publish("test", "key", "value"); Assert.True(wh.WaitOne(TimeSpan.FromSeconds(5))); } finally { if (subscription != null) { subscription.Dispose(); } } } }
public void SubscriptionWithMultipleExistingCursors() { var dr = new DefaultDependencyResolver(); var passThroughMinfier = new PassThroughStringMinifier(); dr.Register(typeof(IStringMinifier), () => passThroughMinfier); using (var bus = new MessageBus(dr)) { Func<ISubscriber> subscriberFactory = () => new TestSubscriber(new[] { "key", "key2" }); var cdKey = new CountDownRange<int>(Enumerable.Range(2, 4)); var cdKey2 = new CountDownRange<int>(new[] { 1, 2, 10 }); IDisposable subscription = null; string prefix = DefaultSubscription._defaultCursorPrefix; // Pretend like we had an initial subscription bus.Subscribe(subscriberFactory(), null, (result, state) => TaskAsyncHelper.True, 10, null) .Dispose(); // This simulates a reconnect bus.Publish("test", "key", "1").Wait(); bus.Publish("test", "key", "2").Wait(); bus.Publish("test", "key", "3").Wait(); bus.Publish("test", "key", "4").Wait(); bus.Publish("test", "key2", "1").Wait(); bus.Publish("test", "key2", "2").Wait(); try { subscription = bus.Subscribe(subscriberFactory(), prefix + "key,00000001|key2,00000000", (result, state) => { foreach (var m in result.GetMessages()) { int n = Int32.Parse(m.GetString()); if (m.Key == "key") { Assert.True(cdKey.Mark(n)); } else { Assert.True(cdKey2.Mark(n)); } } return TaskAsyncHelper.True; }, 10, null); bus.Publish("test", "key", "5"); bus.Publish("test", "key2", "10"); Assert.True(cdKey.Wait(TimeSpan.FromSeconds(5))); Assert.True(cdKey2.Wait(TimeSpan.FromSeconds(5))); } finally { if (subscription != null) { subscription.Dispose(); } } } }
public void DisposingBusShutsWorkersDown() { var dr = new DefaultDependencyResolver(); var bus = new MessageBus(dr); var subscriber = new TestSubscriber(new[] { "key" }); var wh = new ManualResetEventSlim(initialState: false); IDisposable subscription = null; try { subscription = bus.Subscribe(subscriber, null, result => { if (!result.Terminal) { var m = result.GetMessages().Single(); Assert.Equal("key", m.Key); Assert.Equal("value", m.Value); wh.Set(); return TaskAsyncHelper.True; } return TaskAsyncHelper.False; }, 10); bus.Publish("test", "key", "value").Wait(); Assert.True(wh.Wait(TimeSpan.FromSeconds(5))); } finally { if (subscription != null) { subscription.Dispose(); } Assert.Equal(bus.AllocatedWorkers, 1); bus.Dispose(); Assert.Equal(bus.AllocatedWorkers, 0); } }
public void SubscriptionWithExistingCursor() { var dr = new DefaultDependencyResolver(); var passThroughMinfier = new PassThroughStringMinifier(); dr.Register(typeof(IStringMinifier), () => passThroughMinfier); using (var bus = new MessageBus(dr)) { var subscriber = new TestSubscriber(new[] { "key" }); var cd = new CountDownRange<int>(Enumerable.Range(2, 4)); IDisposable subscription = null; // Pretend like we had an initial subscription bus.Subscribe(subscriber, null, _ => TaskAsyncHelper.True, 10) .Dispose(); bus.Publish("test", "key", "1").Wait(); bus.Publish("test", "key", "2").Wait(); bus.Publish("test", "key", "3").Wait(); bus.Publish("test", "key", "4").Wait(); try { subscription = bus.Subscribe(subscriber, "key,00000001", result => { foreach (var m in result.GetMessages()) { int n = Int32.Parse(m.Value); Assert.True(cd.Mark(n)); } return TaskAsyncHelper.True; }, 10); bus.Publish("test", "key", "5"); Assert.True(cd.Wait(TimeSpan.FromSeconds(5))); } finally { if (subscription != null) { subscription.Dispose(); } } } }