static async Task Main(string[] args)
{
Console.WriteLine("Testing InMemory EventBus (y/n) ? ");
var result = Console.ReadKey().Key;
if (result == ConsoleKey.Y)
{
Console.WriteLine("Jitting now...");
var bus = new InMemoryEventBus();
await bus.PublishEventAsync(new TestEvent(-1, false, 0));
Console.WriteLine("Testing 250 events WITHOUT parallel dispatch WITHOUT work simulation");
for (int i = 0; i < 250; i++)
{
await bus.PublishEventAsync(new TestEvent(i, false, 0));
}
Console.WriteLine("Testing 250 events WITHOUT parallel dispatch WITH 100 ms work simulation");
for (int i = 0; i < 250; i++)
{
await bus.PublishEventAsync(new TestEvent(i, true, 100));
}
Console.WriteLine("Testing 250 events WITH parallel dispatch WITH 100 ms work simulation");
var tasks = new List <Task>();
for (int i = 0; i < 250; i++)
{
tasks.Add(bus.PublishEventAsync(new TestEvent(i, true, 100)));
}
await Task.WhenAll(tasks);
}
Console.Read();
}
public async Task InMemoryEventBus_PublishEventAsync_ResolutionException_Should_NotTryToResolveTwice()
{
var scopeMock = new Mock <IScope>();
var loggerMock = new Mock <ILogger>();
var loggerFactoryMock = new Mock <ILoggerFactory>();
loggerFactoryMock.Setup(m => m.CreateLogger(It.IsAny <string>())).Returns(loggerMock.Object);
scopeMock.Setup(m => m.Resolve <ILoggerFactory>(It.IsAny <IResolverParameter[]>()))
.Returns(loggerFactoryMock.Object);
scopeMock.Setup(m => m.Resolve(It.IsAny <Type>(), It.IsAny <IResolverParameter[]>()))
.Throws(new IoCResolutionException());
var b = new InMemoryEventBus(null, new TestScopeFactory(scopeMock.Object));
(await b.PublishEventAsync(new UnresolvableEvent()).ConfigureAwait(false)).IsSuccess.Should().BeFalse();
scopeMock.Verify(m => m.Resolve(typeof(UnresolvableEventHandler), It.IsAny <IResolverParameter[]>()), Times.Once());
(await b.PublishEventAsync(new UnresolvableEvent()).ConfigureAwait(false)).IsSuccess.Should().BeFalse();
scopeMock.Verify(m => m.Resolve(typeof(UnresolvableEventHandler), It.IsAny <IResolverParameter[]>()), Times.Once());
loggerMock.Verify(x =>
x.Log(LogLevel.Error, It.IsAny <EventId>(), It.IsAny <FormattedLogValues>(), It.IsAny <Exception>(), It.IsAny <Func <object, Exception, string> >()), Times.Once());
}
public async Task InMemoryEventBus_PublishEventAsync_ResolutionException_Should_NotTryToResolveTwice()
{
var scopeMock = new Mock <IScope>();
var loggerFactoryMock = new Mock <ILoggerFactory>();
var fakeLogger = new FakeLogger(LogLevel.Error);
loggerFactoryMock.Setup(m => m.CreateLogger(It.IsAny <string>())).Returns(fakeLogger);
scopeMock.Setup(m => m.Resolve <ILoggerFactory>(It.IsAny <IResolverParameter[]>()))
.Returns(loggerFactoryMock.Object);
scopeMock.Setup(m => m.Resolve(It.IsAny <Type>(), It.IsAny <IResolverParameter[]>()))
.Throws(new IoCResolutionException());
var b = new InMemoryEventBus(null, new TestScopeFactory(scopeMock.Object));
(await b.PublishEventAsync(new UnresolvableEvent()).ConfigureAwait(false)).IsSuccess.Should().BeFalse();
scopeMock.Verify(m => m.Resolve(typeof(UnresolvableEventHandler), It.IsAny <IResolverParameter[]>()), Times.Once());
(await b.PublishEventAsync(new UnresolvableEvent()).ConfigureAwait(false)).IsSuccess.Should().BeFalse();
scopeMock.Verify(m => m.Resolve(typeof(UnresolvableEventHandler), It.IsAny <IResolverParameter[]>()), Times.Once());
fakeLogger.CurrentLogValue.Should().NotBeNullOrEmpty();
fakeLogger.NbLogs.Should().Be(1);
}
async Task ReceiveMessageAsync(Message message, CancellationToken token)
{
if (message?.Body != null)
{
try
{
var bodyAsString = Encoding.UTF8.GetString(message.Body);
if (!string.IsNullOrWhiteSpace(bodyAsString))
{
var objType = Type.GetType(message.ContentType);
if (objType.GetInterfaces().Any(i => i.Name == nameof(IDomainEvent)))
{
var eventInstance = _configuration.QueueConfiguration.Serializer.DeserializeEvent(bodyAsString, objType);
_configuration.QueueConfiguration.Callback?.Invoke(eventInstance);
if (_configuration.QueueConfiguration.DispatchInMemory && _inMemoryEventBus != null)
{
await _inMemoryEventBus.PublishEventAsync(eventInstance).ConfigureAwait(false);
}
}
}
}
catch (Exception exc)
{
_logger.LogErrorMultilines("AzureServiceBusServer : Error when treating event.", exc.ToString());
}
}
else
{
var eventType = message?.ContentType;
_logger.LogWarning("AzureServiceBusServer : Empty message received or event fired by unknown model !" +
(!string.IsNullOrWhiteSpace(eventType) ? $"Event type : {eventType}" : ""));
}
}
public async Task InMemoryEventBus_PublishEventAsync_Should_Respect_Priority()
{
var b = new InMemoryEventBus();
s_OrderString.Should().BeNullOrWhiteSpace();
(await b.PublishEventAsync(new OrderedEvent()).ConfigureAwait(false)).IsSuccess.Should().BeTrue();
s_OrderString.Should().Be("HNL");
}
public async Task InMemoryEventBus_PublishEventAsync_OneHandlerInError_Should_NotDispatch_MultipleTimes_ToSuccessfullHandlers()
{
var errorEvent = new ErrorEvent();
var b = new InMemoryEventBus(new InMemoryEventBusConfigurationBuilder()
.SetRetryStrategy(1, 2).Build());
(await b.PublishEventAsync(errorEvent)).IsSuccess.Should().BeFalse();
errorEvent.Data.Should().Be("1222");
}
public async Task Publish_Event_CriticalHandlerThrow_Should_NotCallNextHandlers()
{
var evt = new CriticalEvent();
var cfgBuilder =
new InMemoryEventBusConfigurationBuilder();
var bus = new InMemoryEventBus(cfgBuilder.Build());
(await bus.PublishEventAsync(evt)).IsSuccess.Should().BeTrue();
evt.HandlerData.Should().Be("AB");
}
public async Task InMemoryEventBus_PublishEventAsync_HandlerInDispatcher()
{
CoreDispatcher.AddHandlerToDispatcher(new TestEventContextHandler(1));
var b = new InMemoryEventBus();
(await b.PublishEventAsync(new TestEvent {
Data = "to_ctx"
}).ConfigureAwait(false)).IsSuccess.Should().BeTrue();
TestEventContextHandler.Data.Should().Be("to_ctx");
TestEventContextHandler.Dispatcher.Should().Be(1);
}
public async Task InMemoryEventBus_PublishEventAsync_ContextAsHandler()
{
var b = new InMemoryEventBus();
(await b.PublishEventAsync(new TestEvent {
Data = "to_ctx"
}, new TestEventContextHandler(0)).ConfigureAwait(false))
.IsSuccess.Should().BeTrue();
TestEventContextHandler.Data.Should().Be("to_ctx");
TestEventContextHandler.Dispatcher.Should().Be(0);
}
public async Task Publish_Event_CriticalHandlerThrow_Should_BeTheOnlyOneRetried_If_RetryStrategy_IsDefined()
{
var evt = new CriticalEvent();
var cfgBuilder =
new InMemoryEventBusConfigurationBuilder()
.SetRetryStrategy(1, 3);
var bus = new InMemoryEventBus(cfgBuilder.Build());
(await bus.PublishEventAsync(evt)).IsSuccess.Should().BeTrue();
evt.HandlerData.Should().Be("ABBBC");
evt.NbTries.Should().Be(3);
}
public async Task InMemoryEventBus_Configuration_DispatchIfClause()
{
TestIfEventHandler.ResetData();
var cfgBuilder =
new InMemoryEventBusConfigurationBuilder()
.DispatchOnlyIf <TestIfEvent>(e => e.Data > 1);
var b = new InMemoryEventBus(cfgBuilder.Build());
TestIfEventHandler.Data.Should().Be(0);
(await b.PublishEventAsync(new TestIfEvent {
Data = 1
}).ConfigureAwait(false)).IsSuccess.Should().BeFalse();
TestIfEventHandler.Data.Should().Be(0);
(await b.PublishEventAsync(new TestIfEvent {
Data = 10
}).ConfigureAwait(false)).IsSuccess.Should().BeTrue();
TestIfEventHandler.Data.Should().Be(10);
}
public async Task InMemoryEventBus_Configuration_RetryStrategy_CallbackNoInvoked()
{
bool callbackCalled = false;
var cfgBuilder =
new InMemoryEventBusConfigurationBuilder()
.SetRetryStrategy(100, 3)
.DefineErrorCallback((e, ctx) => callbackCalled = true);
var b = new InMemoryEventBus(cfgBuilder.Build());
(await b.PublishEventAsync(new TestRetryEvent()).ConfigureAwait(false)).IsSuccess.Should().BeTrue();
callbackCalled.Should().BeFalse();
}
public async Task InMemoryEventBus_Configuration_ParallelDispatch()
{
var cfgBuilder =
new InMemoryEventBusConfigurationBuilder()
.AllowParallelDispatchFor <ParallelEvent>();
var b = new InMemoryEventBus(cfgBuilder.Build());
var evt = new ParallelEvent();
(await b.PublishEventAsync(evt).ConfigureAwait(false)).IsSuccess.Should().BeTrue();
evt.ThreadsInfos.Should().HaveCount(2);
}
/// <summary>
/// Start the MSMQ in-app server.
/// </summary>
public Task StartAsync(CancellationToken cancellationToken = default)
{
if (cancellationToken == default)
{
_tokenSource = new CancellationTokenSource();
_token = _tokenSource.Token;
}
else
{
_token = cancellationToken;
}
var queue = Helpers.GetMessageQueue(_configuration.QueueName);
RunningTask = Task.Run(() =>
{
while (true)
{
var message = queue.Receive();
//Start every reception in a separate task for perf and safety.
Task.Run(async() =>
{
if (!string.IsNullOrWhiteSpace(message.Body?.ToString()))
{
try
{
var enveloppe = message.Body.ToString().FromJson <Enveloppe>();
if (enveloppe.Emiter != _emiter)
{
var data = enveloppe.Data.FromJson(Type.GetType(enveloppe.AssemblyQualifiedDataType));
_configuration?.Callback(data);
if (data is IDomainEvent @event && (_configuration == null || _configuration.DispatchInMemory))
{
await _inMemoryEventBus?.PublishEventAsync(@event);
}
}
}
catch (Exception e)
{
_logger?.LogError($"MSMQServer : Cannot treat message id {message.Id} {Environment.NewLine} {e}");
}
}
}, cancellationToken);
}
}, cancellationToken);
return(Task.CompletedTask);
}
private async void OnEventReceived(object model, BasicDeliverEventArgs args)
{
if (args.Body?.Any() == true && model is EventingBasicConsumer consumer)
{
try
{
var dataAsStr = Encoding.UTF8.GetString(args.Body);
var enveloppe = dataAsStr.FromJson <Enveloppe>();
if (enveloppe != null)
{
if (enveloppe.Emiter == _config.Emiter)
{
return;
}
if (!string.IsNullOrWhiteSpace(enveloppe.Data) && !string.IsNullOrWhiteSpace(enveloppe.AssemblyQualifiedDataType))
{
var objType = Type.GetType(enveloppe.AssemblyQualifiedDataType);
if (objType != null)
{
if (objType.GetInterfaces().Any(i => i.Name == nameof(IDomainEvent)))
{
var evt = _config.QueueConfiguration.Serializer.DeserializeEvent(enveloppe.Data, objType);
_config.QueueConfiguration.Callback?.Invoke(evt);
if (_config.QueueConfiguration.DispatchInMemory && _inMemoryEventBus != null)
{
await _inMemoryEventBus.PublishEventAsync(evt).ConfigureAwait(false);
}
consumer.Model.BasicAck(args.DeliveryTag, false);
}
}
}
}
}
catch (Exception exc)
{
_logger.LogErrorMultilines("RabbitMQServer : Error when treating event.", exc.ToString());
consumer.Model.BasicReject(args.DeliveryTag, false); //TODO make it configurable for retry or so
}
}
else
{
_logger.LogWarning("RabbitMQServer : Empty message received or event fired by bad model !");
}
}
public async Task InMemoryEventBus_PublishEventAsync_HandlerSameInstance_Should_NotBeCalledTwice()
{
TestEventContextHandler.CallTimes = 0;
var h = new TestEventContextHandler(1);
CoreDispatcher.AddHandlerToDispatcher(new TestEventContextHandler(1));
CoreDispatcher.AddHandlerToDispatcher(h);
CoreDispatcher.AddHandlerToDispatcher(h);
var b = new InMemoryEventBus();
(await b.PublishEventAsync(new TestEvent {
Data = "to_ctx"
}).ConfigureAwait(false)).IsSuccess.Should().BeTrue();
TestEventContextHandler.Data.Should().Be("to_ctx");
TestEventContextHandler.Dispatcher.Should().Be(1);
TestEventContextHandler.CallTimes.Should().Be(1);
}
public async Task InMemoryEventBus_ResolutionError_Type_IsSubViewModel_Should_NotLogAnything()
{
var scopeMock = new Mock <IScope>();
var loggerMock = new Mock <ILogger>();
var loggerFactoryMock = new Mock <ILoggerFactory>();
loggerFactoryMock.Setup(m => m.CreateLogger(It.IsAny <string>())).Returns(loggerMock.Object);
scopeMock.Setup(m => m.Resolve <ILoggerFactory>(It.IsAny <IResolverParameter[]>()))
.Returns(loggerFactoryMock.Object);
scopeMock.Setup(m => m.Resolve(typeof(SubViewModel), It.IsAny <IResolverParameter[]>())).Throws(new Exception());
var b = new InMemoryEventBus(null, new TestScopeFactory(scopeMock.Object));
(await b.PublishEventAsync(new SubVMEvent()).ConfigureAwait(false)).IsSuccess.Should().BeFalse();
loggerMock.Verify(x =>
x.Log(LogLevel.Error, It.IsAny <EventId>(), It.IsAny <FormattedLogValues>(), It.IsAny <Exception>(), It.IsAny <Func <object, Exception, string> >()), Times.Never());
}
public async Task InMemoryEventBus_ResolutionError_Type_IsSubViewModel_Should_NotLogAnything()
{
var scopeMock = new Mock <IScope>();
var fakeLogger = new FakeLogger(LogLevel.Error);
var loggerFactoryMock = new Mock <ILoggerFactory>();
loggerFactoryMock.Setup(m => m.CreateLogger(It.IsAny <string>())).Returns(fakeLogger);
scopeMock.Setup(m => m.Resolve <ILoggerFactory>(It.IsAny <IResolverParameter[]>()))
.Returns(loggerFactoryMock.Object);
scopeMock.Setup(m => m.Resolve(typeof(SubViewModel), It.IsAny <IResolverParameter[]>())).Throws(new Exception());
var b = new InMemoryEventBus(null, new TestScopeFactory(scopeMock.Object));
(await b.PublishEventAsync(new SubVMEvent()).ConfigureAwait(false)).IsSuccess.Should().BeFalse();
fakeLogger.CurrentLogValue.Should().BeNullOrEmpty();
fakeLogger.NbLogs.Should().Be(0);
}
public async Task InMemoryEventBus_Configuration_RetryStrategy_WhenDispatchParallel()
{
bool callbackCalled = false;
var cfgBuilder =
new InMemoryEventBusConfigurationBuilder()
.SetRetryStrategy(100, 3)
.DefineErrorCallback((e, ctx) => callbackCalled = true)
.AllowParallelDispatchFor <ParallelEvent>();
var b = new InMemoryEventBus(cfgBuilder.Build());
var evt = new ParallelEvent()
{
RetryMode = true
};
(await b.PublishEventAsync(evt).ConfigureAwait(false)).IsSuccess.Should().BeTrue();
callbackCalled.Should().BeFalse();
evt.ThreadsInfos.Should().HaveCount(2);
}
public async Task InMemoryEventBus_PublishEventAsync_TransactionnalEvent()
{
TransactionEventHandler.DataParsed = string.Empty;
var evt = new TransactionEvent(
new Event1 {
Data = "Data1"
},
new Event2 {
Data = "Data2"
},
new Event3 {
Data = "Data3"
}
);
var b = new InMemoryEventBus();
(await b.PublishEventAsync(evt).ConfigureAwait(false)).IsSuccess.Should().BeTrue();
TransactionEventHandler.DataParsed.Should().Be("|1:Data1|2:Data2|3:Data3");
}
public async Task PublishEventAsync_Should_ResultFail_ShouldBeReturned()
{
var b = new InMemoryEventBus();
(await b.PublishEventAsync(new TestResultFailedEvent(), null).ConfigureAwait(false)).IsSuccess.Should().BeFalse();
}
public async Task PublishSingleEvent()
{
var bus = new InMemoryEventBus();
await bus.PublishEventAsync(new TestDispatchEvent(0, MillisecondsJobDuration != 0, MillisecondsJobDuration));
}
public async Task InMemoryEventBus_PublishEventAsync_ExceptionInHandler()
{
var b = new InMemoryEventBus();
(await b.PublishEventAsync(new TestExceptionEvent(), null).ConfigureAwait(false)).IsSuccess.Should().BeFalse();
}
