public void After_One_Subscriber_Was_Added_The_Message_Handler_Should_Be_One()
{
_subscriberManager.Subscribe <TestMessage, TestMessageHandler>();
_subscriberManager.Subscribe <TestDynamicMessageHandler>("TestDynamicMessageHandler");
var subscribers = _subscriberManager.GetSubscribers <TestMessage>();
var dynamicSubscribers = _subscriberManager.GetSubscribers("TestDynamicMessageHandler");
Assert.Single(subscribers);
Assert.Single(dynamicSubscribers);
}
private async Task DoPublishAsync(string messageName, dynamic message)
{
Assert.NotNullOrEmpty(messageName, nameof(messageName));
Assert.NotNull(message, nameof(message));
var subscribers = _subscriberManager.GetSubscribers(messageName);
if (subscribers != null && subscribers.Any())
{
using (var scope = _serviceScopeFactory.CreateScope())
{
foreach (var subcriber in subscribers)
{
dynamic handler = scope.ServiceProvider.GetService(subcriber.MessageHandlerType);
if (handler != null)
{
if (_options.MonitorSlowMessageHandler)
{
var start = DateTime.UtcNow;
await handler.HandleAsync(message);
var elapsed = DateTime.UtcNow - start;
if (elapsed > _options.SlowMessageHandlerThreshold)
{
_logger.LogTrace("SLOW BUS MSG [{0}]: {1} - {2}ms. Handler: {3}.", Name, messageName, elapsed.TotalMilliseconds, (string)handler.GetType().Name);
OnSlowMessageHandled.Invoke(this, new SlowMessageHandlerEventArgs(messageName, subcriber.MessageHandlerType.Name, elapsed));
}
}
else
{
await handler.HandleAsync(message);
}
_logger.LogInformation($"MESSAGE BUS[{Name}]: the message[{messageName}] had been hanlded[{(string)handler.GetType().Name}].");
}
else
{
_logger.LogError($"MESSAGE BUS[{Name}]: the message[{messageName}] handler could not be found.");
}
}
}
}
}
public IEnumerable <MessageSubscriber> GetSubscribers(Type messageType) => _subscriber.GetSubscribers(messageType);