public void ShouldUseDeadLetterQueueOnException()
{
_subscriber = new RabbitMqSubscriber <string>(
EmptyLogFactory.Instance,
_settings,
new DeadQueueErrorHandlingStrategy(EmptyLogFactory.Instance, _settings))
.CreateDefaultBinding()
.SetMessageDeserializer(new DefaultStringDeserializer());
const string expected = "GetDefaultHost message";
SetupNormalQueue();
PublishToQueue(expected);
var completeLock = new ManualResetEventSlim(false);
var handler = new Func <string, Task>(s =>
{
completeLock.Set();
throw new Exception();
});
_subscriber.Subscribe(handler);
_subscriber.Start();
completeLock.Wait();
var result = ReadFromQueue(PoisonQueueName);
Assert.That(result, Is.EqualTo(expected));
}
public void ShouldUseDeadLetterQueueOnException()
{
_subscriber = new RabbitMqSubscriber <string>(
new NullLogger <RabbitMqSubscriber <string> >(),
_settings)
.UseMiddleware(new ExceptionSwallowMiddleware <string>(new NullLogger <ExceptionSwallowMiddleware <string> >()))
.CreateDefaultBinding()
.SetMessageDeserializer(new DefaultStringDeserializer());
const string expected = "GetDefaultHost message";
SetupNormalQueue();
PublishToQueue(expected);
var completeLock = new ManualResetEventSlim(false);
var handler = new Func <string, Task>(s =>
{
completeLock.Set();
throw new Exception();
});
_subscriber.Subscribe(handler);
_subscriber.Start();
completeLock.Wait();
var result = ReadFromQueue(PoisonQueueName);
Assert.That(result, Is.EqualTo(expected));
}
public void ReceivingMessagesWhenOneRabbitIsNotReachable()
{
// arrange
var settings = new RabbitMqSubscriptionSettings
{
ConnectionString = InvalidConnectionString,
ExchangeName = ExchangeName,
IsDurable = true,
QueueName = QueueName
};
_subscriber = new RabbitMqSubscriber <string>(
EmptyLogFactory.Instance,
settings,
new DefaultErrorHandlingStrategy(EmptyLogFactory.Instance, settings))
.SetMessageDeserializer(new DefaultStringDeserializer())
.SetMessageReadStrategy(new MessageReadQueueStrategy())
.SetAlternativeExchange(AlternativeConnectionString)
.SetDeduplicator(new InMemoryDeduplcator())
.CreateDefaultBinding();
var handler = new Func <string, Task>(s =>
{
_messagesCount++;
return(Task.CompletedTask);
});
_subscriber.Subscribe(handler);
_subscriber.Start();
// act
{
var factory = new ConnectionFactory {
Uri = new Uri(AlternativeConnectionString)
};
using (var connection = factory.CreateConnection())
using (var channel = connection.CreateModel())
{
channel.BasicPublish(ExchangeName, "", body: Encoding.UTF8.GetBytes("1"));
channel.BasicPublish(ExchangeName, "", body: Encoding.UTF8.GetBytes("3"));
channel.BasicPublish(ExchangeName, "", body: Encoding.UTF8.GetBytes("4"));
}
}
Thread.Sleep(TimeSpan.FromSeconds(2));
// assert
Assert.AreEqual(3, _messagesCount);
}
public async Task StartAsync(CancellationToken cancellationToken)
{
if (!await _featureManager.IsEnabledAsync(BrokerFeature.ProductComplexityWarning))
{
_log.LogInformation("{Component} not started because product complexity warning feature is disabled for broker", nameof(OrderHistoryListener));
return;
}
if (_settings.ComplexityWarningsCount <= 0)
{
throw new InvalidOperationException($"Broker {_settings.BrokerId} feature {BrokerFeature.ProductComplexityWarning} is enabled, " +
$"but {nameof(_settings.ComplexityWarningsCount)} = {_settings.ComplexityWarningsCount} is not valid ");
}
_subscriber
.Subscribe(this.Handle)
.Start();
}
public void ShouldExecuteHelloWorldCommand()
{
using (var receiver = new RabbitMqSubscriber <RabbitMqMessage <HelloWorldCommand> >(new RabbitMqConfig())) {
receiver.Subscribe(AssertReceivedMessage);
var message = new RabbitMqMessage <HelloWorldCommand> {
Payload = new HelloWorldCommand {
Input = "Hola!"
}
};
var dispatcher = container.Resolve <ICommandDispatcher>();
dispatcher.SubmitRabbitMqCommand(message);
while (!messageReceived)
{
log.Info("Waiting for a message receiver");
}
}
}
public TradingSignalsHandler(IEnumerable <Exchange> exchanges, ILog logger,
IHandler <ExecutionReport> acknowledHandler,
IHandler <ExecutionReport> tradeHandler,
TranslatedSignalsRepository translatedSignalsRepository,
TimeSpan apiTimeout,
RabbitMqSubscriber <TradingSignal> messageProducer,
bool enabled)
{
this.exchanges = exchanges.ToDictionary(k => k.Name);
this.logger = logger;
_acknowledHandler = acknowledHandler;
_tradeHandler = tradeHandler;
this.translatedSignalsRepository = translatedSignalsRepository;
this.apiTimeout = apiTimeout;
_messageProducer = messageProducer;
_enabled = enabled;
if (enabled)
{
messageProducer.Subscribe(Handle);
}
}
public void SuccessfulPath()
{
const string expected = "GetDefaultHost message";
string result = null;
SetupNormalQueue();
var completeLock = new ManualResetEventSlim(false);
var handler = new Func <string, Task>(s =>
{
result = s;
completeLock.Set();
return(Task.CompletedTask);
});
_subscriber.Subscribe(handler);
_subscriber.Start();
PublishToQueue(expected);
completeLock.Wait();
Assert.That(result, Is.EqualTo(expected));
}
public void SubscribeMessageHandler(Func <T, Task> callback)
{
_connector.Subscribe(callback);
}
public void ReceivingAndDeduplicationMessagesFromBothExchanges()
{
// arrange
var settings = new RabbitMqSubscriptionSettings
{
ConnectionString = ConnectionString,
ExchangeName = ExchangeName,
IsDurable = true,
QueueName = QueueName
};
_subscriber = new RabbitMqSubscriber <string>(
new NullLogger <RabbitMqSubscriber <string> >(),
settings)
.UseMiddleware(new InMemoryDeduplicationMiddleware <string>())
.UseMiddleware(new ExceptionSwallowMiddleware <string>(new NullLogger <ExceptionSwallowMiddleware <string> >()))
.SetMessageDeserializer(new DefaultStringDeserializer())
.SetMessageReadStrategy(new MessageReadQueueStrategy())
.SetAlternativeExchange(AlternativeConnectionString)
.CreateDefaultBinding();
var handler = new Func <string, Task>(s =>
{
_messagesCount++;
return(Task.CompletedTask);
});
_subscriber.Subscribe(handler);
_subscriber.Start();
// act
{
var factory = new ConnectionFactory {
Uri = new Uri(ConnectionString, UriKind.Absolute)
};
using (var connection = factory.CreateConnection())
using (var channel = connection.CreateModel())
{
channel.BasicPublish(ExchangeName, "", body: Encoding.UTF8.GetBytes("1"));
channel.BasicPublish(ExchangeName, "", body: Encoding.UTF8.GetBytes("2"));
channel.BasicPublish(ExchangeName, "", body: Encoding.UTF8.GetBytes("4"));
}
}
{
var factory = new ConnectionFactory {
Uri = new Uri(AlternativeConnectionString, UriKind.Absolute)
};
using (var connection = factory.CreateConnection())
using (var channel = connection.CreateModel())
{
channel.BasicPublish(ExchangeName, "", body: Encoding.UTF8.GetBytes("1"));
channel.BasicPublish(ExchangeName, "", body: Encoding.UTF8.GetBytes("3"));
channel.BasicPublish(ExchangeName, "", body: Encoding.UTF8.GetBytes("4"));
}
}
Thread.Sleep(TimeSpan.FromSeconds(2));
// assert
Assert.AreEqual(4, _messagesCount);
}
