public void MessageBusCanBeDisposedTwiceWithoutHanging()
{
var bus = new MessageBus(new DefaultDependencyResolver());
bus.Dispose();
Assert.True(Task.Run(() => bus.Dispose()).Wait(TimeSpan.FromSeconds(10)));
}
protected override void ConfigImpl()
{
var options = CurrentState;
var parent = Context.Parent;
var messageBus = new MessageBus();
messageBus.Subscribe(new ClockComponent(options));
messageBus.Subscribe(new DataFetchComponent(options));
messageBus.Subscribe(new TrackingEventDeliveryComponent(e =>
{
parent.Tell(e);
return(Task.CompletedTask);
}));
messageBus.Subscribe(new PowerComponent());
messageBus.Subscribe(new CoolDownComponent());
messageBus.Subscribe(new GoStandByComponent(options));
messageBus.Subscribe(new StartUpCoolingComponent(options));
messageBus.Subscribe(new StandByCoolingComponent(options));
messageBus.Subscribe(new FanControlComponent(options, e =>
{
parent.Tell(new FanStatusChange(e));
return(Task.CompletedTask);
}));
Stop.Subscribe(_ => messageBus.Dispose());
Receive <ClockEvent>(obs => obs.SelectMany(async p => await messageBus.Publish(p)));
}
public void RunEventSource_Test1()
{
int sum = 0;
IDisposable token = null;
var messageBus = new MessageBus();
messageBus.InitializeEventSources();
messageBus.Subscribe <int>(b => b
.WithDefaultTopic()
.Invoke(i => sum += i)
.Immediate());
var resetEvent = new ManualResetEvent(false);
var target = new TestEventSource1(resetEvent);
try
{
token = messageBus.RunEventSource(target);
resetEvent.WaitOne(5000).Should().BeTrue();
sum.Should().Be(7);
}
finally
{
token?.Dispose();
resetEvent.Dispose();
messageBus.Dispose();
}
}
public void ListenRequestAndResponse_WorkerThread()
{
var target = new MessageBus(new MessageBusCreateParameters
{
NumberOfWorkers = 1
});
try
{
target.Listen <TestRequestWithResponse, TestResponse>(l => l
.WithTopic("Test")
.Invoke(req => new TestResponse {
Text = req.Text + "Responded" + Thread.CurrentThread.ManagedThreadId
})
.OnWorker());
var response = target.Request <TestRequestWithResponse, TestResponse>("Test", new TestRequestWithResponse {
Text = "Request"
});
response.Should().NotBeNull();
}
finally
{
target.Dispose();
}
}
public void ParticipateScatterGather_OnThread()
{
var target = new MessageBus();
int threadId = target.WorkerPool.StartDedicatedWorker().ThreadId;
try
{
var token = target.Participate <TestRequestWithResponse, TestResponse>(builder => builder
.WithTopic("Test")
.Invoke(e => new TestResponse {
Text = Thread.CurrentThread.ManagedThreadId.ToString()
})
.OnThread(threadId));
var results = target.Scatter <TestRequestWithResponse, TestResponse>("Test", new TestRequestWithResponse {
Text = "Test"
});
results.GetNextResponse().Value.Text.Should().NotBeNullOrEmpty();
token.Dispose();
}
finally
{
target.Dispose();
}
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
_bus.Dispose();
}
base.Dispose(disposing);
}
protected override void Dispose(bool disposing)
{
if (_bus != null && disposing)
{
_bus.Dispose();
_bus = null;
}
base.Dispose(disposing);
}
public void TryingToQueueMessageAfterDisposingThrows()
{
var bus = new MessageBus(SpyMessageSink.Create());
bus.Dispose();
var exception = Record.Exception(
() => bus.QueueMessage(Substitute.For <IMessageSinkMessage>())
);
Assert.IsType <ObjectDisposedException>(exception);
}
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,
messageBufferSize: 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 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 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 ListenRequestAndResponse_ThreadPool()
{
var target = new MessageBus();
try
{
target.Listen <int, int>(l => l
.WithDefaultTopic()
.Invoke(req => req * 5)
.OnThreadPool());
var response = target.RequestWait <int, int>(1);
response.Should().Be(5);
}
finally
{
target.Dispose();
}
}
public void ListenRequestAndResponse_OnThread()
{
var target = new MessageBus();
int threadId = target.WorkerPool.StartDedicatedWorker().ThreadId;
try
{
target.Listen <int, int>(l => l
.WithDefaultTopic()
.Invoke(req => req * 5)
.OnThread(threadId));
var response = target.RequestWait <int, int>(1);
response.Should().Be(5);
}
finally
{
target.Dispose();
}
}
public void Subscribe_SubscriptionBuilder_OnThread()
{
var target = new MessageBus();
var resetEvent = new ManualResetEvent(false);
var id = target.WorkerPool.StartDedicatedWorker().ThreadId;
try
{
target.Subscribe <TestPubSubEvent>(builder => builder
.WithTopic("Test")
.Invoke(e => resetEvent.Set())
.OnThread(id));
target.Publish("Test", new TestPubSubEvent("Test"));
resetEvent.WaitOne(5000).Should().BeTrue();
}
finally
{
resetEvent.Dispose();
target.Dispose();
}
}
public void Subscribe_SubscriptionBuilder_WorkerThread()
{
var target = new MessageBus(new MessageBusCreateParameters
{
NumberOfWorkers = 1
});
try
{
var resetEvent = new AutoResetEvent(false);
target.Subscribe <TestPubSubEvent>(builder => builder
.WithTopic("Test")
.Invoke(e => resetEvent.Set())
.OnWorker());
target.Publish("Test", new TestPubSubEvent("Test"));
resetEvent.WaitOne(2000).Should().BeTrue();
}
finally
{
target.Dispose();
}
}
public void RunEventSource__Delegate()
{
IDisposable token = null;
var messageBus = new MessageBus();
messageBus.InitializeEventSources();
var resetEvent = new ManualResetEvent(false);
var target = new TestEventSource2(resetEvent);
try
{
token = messageBus.RunEventSource(target);
var report = messageBus.WorkerPool.GetThreadReport();
report.RegisteredThreads.Count.Should().Be(1);
var str = report.ToString();
}
finally
{
token?.Dispose();
resetEvent.Dispose();
messageBus.Dispose();
}
}
public void MessageTimer_Start()
{
var bus = new MessageBus();
var ids = new List <long>();
try
{
var moduleToken = bus.InitializeMessageTimer();
var timerToken = bus.StartTimer("test", 100, 100);
var subscriptionToken = bus.TimerSubscribe("test", 1, builder => builder.Invoke(mte => ids.Add(mte.Id)));
Thread.Sleep(1000);
moduleToken.Dispose();
subscriptionToken.Dispose();
ids.Should().OnlyHaveUniqueItems();
ids.Count.Should().BeGreaterOrEqualTo(5);
}
finally
{
bus.Dispose();
}
}
public void Dispose_Disposes_AllRegistered_Channels()
{
var dispose1Called = false;
var dispose2Called = false;
const string registeredChannelId1 = nameof(registeredChannelId1);
const string registeredChannelId2 = nameof(registeredChannelId2);
var mockMessageChannel1 = new Mock<IMessageChannel>();
mockMessageChannel1.Setup(x => x.Dispose()).Callback(() => dispose1Called = true);
var mockMessageChannel2 = new Mock<IMessageChannel>();
mockMessageChannel2.Setup(x => x.Dispose()).Callback(() => dispose2Called = true);
IMessageChannel CreateChannel(string channelId)
{
if (channelId == registeredChannelId1)
{
return mockMessageChannel1.Object;
}
if (channelId == registeredChannelId2)
{
return mockMessageChannel2.Object;
}
return null;
}
var messageBus = new MessageBus(CreateChannel);
messageBus.RegisterChannel(registeredChannelId1);
messageBus.RegisterChannel(registeredChannelId2);
messageBus.Dispose();
Assert.True(dispose1Called);
Assert.True(dispose2Called);
}
public void SubscribeAndPublish_TrieStrategy_Dispose()
{
var target = new MessageBus(MessageBusCreateParameters.Default.WithWildcards());
target.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 override void Dispose()
{
_bus.Dispose();
base.Dispose();
}
void ShutDownBus()
{
bus.Stop().GetAwaiter().GetResult();
bus.Dispose();
}
public void Dispose() => _messageBus.Dispose();
