/// <summary>
/// Processor for user defined messages.
/// </summary>
/// <param name="message">The message.</param>
protected override bool Receive(object message)
{
var deadLetter = (DeadLetter)message;
IActorRef snd = deadLetter.Sender;
IActorRef rcp = deadLetter.Recipient;
_count++;
bool done = _maxCount != int.MaxValue && _count >= _maxCount;
string doneMsg = done ? ", no more dead letters will be logged" : "";
if (!done)
{
var rcpPath = rcp == ActorRefs.NoSender ? "NoSender" : rcp.Path.ToString();
var sndPath = snd == ActorRefs.NoSender ? "NoSender" : snd.Path.ToString();
_eventStream.Publish(new Info(rcpPath, rcp.GetType(),
string.Format("Message {0} from {1} to {2} was not delivered. {3} dead letters encountered.{4}",
deadLetter.Message.GetType().Name, sndPath, rcpPath, _count, doneMsg)));
}
if (done)
{
((IInternalActorRef)Self).Stop();
}
return(true);
}
private string GetActorType(IActorRef actor)
{
object props;
if (IsField(actor))
{
props = actor.GetType().GetField("Props", bindingFlags).GetValue(actor);
}
else if (IsProp(actor))
{
props = actor.GetType().GetProperty("Props", bindingFlags).GetValue(actor);
}
else
{
return(null);
}
var type = props.GetType().GetProperty("TypeName", bindingFlags).GetValue(props);
return(type.ToString().Split(',')[0]);
}
private void LogDeadLetter(object message, IActorRef snd, IActorRef recipient, string doneMsg)
{
var origin = ReferenceEquals(snd, Context.System.DeadLetters) ? "without sender" : $"from {snd.Path}";
_eventStream.Publish(new Info(
recipient.Path.ToString(),
recipient.GetType(),
$"Message [{message.GetType().Name}] {origin} to {recipient.Path} was not delivered. [{_count.ToString()}] dead letters encountered{doneMsg}. " +
$"If this is not an expected behavior then {recipient.Path} may have terminated unexpectedly. " +
"This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' " +
"and 'akka.log-dead-letters-during-shutdown'."));
}
private bool IsProp(IActorRef actor)
{
return(actor.GetType().GetProperty("Props", bindingFlags) != null);
}
private bool IsField(IActorRef actor)
{
return(actor.GetType().GetField("Props", bindingFlags) != null);
}
