public async Task CanForwardToMultipleRecipients()
{
var network = new InMemNetwork();
var activator = new BuiltinHandlerActivator();
Using(activator);
var recipients = new[] { "recipient-A", "recipient-B" }.ToList();
recipients.ForEach(network.CreateQueue);
Configure.With(activator)
.Transport(t => t.UseInMemoryTransport(network, "forwarder"))
.Routing(t =>
{
t.AddTransportMessageForwarder(async transportMessage => ForwardAction.ForwardTo(recipients));
})
.Start();
await activator.Bus.SendLocal("HEJ MED DIG!!!");
var transportMessages = await Task.WhenAll(recipients.Select(async queue =>
{
var message = await network.WaitForNextMessageFrom(queue);
return(message);
}));
Assert.That(transportMessages.Length, Is.EqualTo(2));
}
static IBus GetFailingBus(BuiltinHandlerActivator activator, InMemNetwork network, string recipientQueueName, ErrorBehavior errorBehavior)
{
var deliveryAttempts = 0;
var bus = Configure.With(activator)
.Transport(t => t.UseInMemoryTransport(network, "forwarder"))
.Routing(t =>
{
t.AddTransportMessageForwarder(async transportMessage =>
{
deliveryAttempts++;
if (deliveryAttempts < 10)
{
throw new RebusApplicationException("fake an error");
}
return(ForwardAction.ForwardTo(recipientQueueName));
}, errorBehavior);
})
.Options(o =>
{
o.SetNumberOfWorkers(1);
o.SetMaxParallelism(1);
})
.Start();
return(bus);
}
protected override Task ExecuteAsync(CancellationToken stoppingToken)
{
var handlerActivator = new DependencyInjectionHandlerActivator(_serviceProvider);
var configurer = Configure.With(handlerActivator);
configurer
.Serialization(serializer => serializer.UseNewtonsoftJson(DefaultContentSerializer.CreateDefaultJsonSerializationSettings()))
.Transport(transport => transport.UseAzureServiceBus(_configuration.GetConnectionString("AzureServiceBus"), "error"))
.Routing(r =>
{
r.AddTransportMessageForwarder(transportMessage =>
{
var returnAddress = transportMessage.Headers[Headers.SourceQueue];
if (returnAddress.Contains("workflow-management-events"))
{
return(Task.FromResult(ForwardAction.Ignore()));
}
return(Task.FromResult(ForwardAction.ForwardTo(returnAddress)));
});
});
var bus = configurer.Start();
return(Task.CompletedTask);
}
public async Task CanDistributeWork(int numberOfMessages)
{
var transportConfigurer = GetTransportConfigurer();
var workers = new[] { "worker1", "worker2", "worker3", "worker4" }
.Select(TestConfig.GetName)
.ToArray();
var distributorQueueName = TestConfig.GetName("distributor");
workers.ForEach(name =>
{
StartWorker(name, transportConfigurer);
});
var distributor = Configure.With(Using(new BuiltinHandlerActivator()))
.Logging(l => l.Console(LogLevel.Info))
.Transport(t =>
{
transportConfigurer(t, distributorQueueName);
})
.Routing(r =>
{
var nextDestinationIndex = 0;
r.AddTransportMessageForwarder(async transportMessage =>
{
var headers = transportMessage.Headers;
if (headers.ContainsKey(SpecialHeaderKey))
{
var index = Interlocked.Increment(ref nextDestinationIndex) % workers.Length;
return(ForwardAction.ForwardTo(workers[index]));
}
return(ForwardAction.None);
});
})
.Options(o =>
{
o.LogPipeline(verbose: true);
})
.Start();
await Task.WhenAll(
Enumerable.Range(0, numberOfMessages)
.Select(id => new Work {
WorkId = id
})
.Select(work => distributor.SendLocal(work, _forwardHeaders))
);
await _doneWork.WaitUntil(w => w.Count == numberOfMessages, timeoutSeconds : 20);
var workByWorker = _doneWork.GroupBy(w => w.Worker).ToList();
Console.WriteLine(@"Done work:
{0}
", string.Join(Environment.NewLine, workByWorker.Select(g => $" {g.Key}: {g.Count()}")));
Assert.That(workByWorker.Count, Is.EqualTo(workers.Length), "Expected that all workers got to do some work!");
}