private async Task OnHandlerException_Default(TMessage message, Exception exception)
{
ASSERT(message != null, $"Missing parameter '{nameof(message)}'");
ASSERT(exception != null, $"Missing parameter '{nameof(exception)}'");
var asyncException = exception as System.Reflection.TargetInvocationException;
if (asyncException != null)
{
// Unwrap those crappy exception ...
await OnHandlerException_Default(message, asyncException.InnerException);
}
else if (string.IsNullOrWhiteSpace(message.TryGetString(MessageKeys.KeySenderID)))
{
FAIL($"The message handler for '{message.TryGetString(MessageKeys.KeyMessageHandler)}' had no sender defined and threw an exception ({exception.GetType().FullName}): {exception.Message}");
// Discard
}
else
{
// Send response
var response = Broker.FillAsResponse(source: message, destination: Broker.NewMessage());
Broker.FillException(response, exception);
await Broker.ReceiveMessages(new TMessage[] { response });
}
}
public async Task ReceiveMessage(TMessage message)
{
var callback = Callbacks.TryGet(message.TryGetString(MessageKeys.KeyMessageHandler));
if (callback == null)
{
await OnUnknownMessageReceived.Invoke(message);
return;
}
await callback(message);
}
private async Task OnUnknownMessageReceived_Default(TMessage message)
{
ASSERT(message != null, $"Missing parameter '{nameof(message)}'");
if (string.IsNullOrWhiteSpace(message.TryGetString(MessageKeys.KeySenderID)))
{
FAIL($"{nameof(MessageHandler)}: Received message with unknown type '{message.TryGetString(MessageKeys.KeyMessageHandler)}'");
// Discard
}
else
{
// Send response
var response = Broker.FillAsResponse(source: message, destination: Broker.NewMessage());
try{ throw new ArgumentException($"{nameof(MessageHandler)}: Received message with unknown type '{message.TryGetString(MessageKeys.KeyMessageHandler)}'"); } catch (System.Exception ex) { Broker.FillException(response, ex); };
await Broker.ReceiveMessages(new TMessage[] { response });
}
}