Fixed: IWrappedMessage + IDeadLetterSuppression handling
#7414
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Aaronontheweb
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IWrappedMessage + IDeadLetterSuppression handling
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Reproduction specs for SuppressedDeadLetter production in the case of IWrappedMessages that may themselves be marked as IDeadLetterSuppression or perhaps some of their contents might be marked that way.
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Tests for the WrappedMessage class itself
| return message; | ||
| } | ||
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| internal static bool IsDeadLetterSuppressedAnywhere(object message) |
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Function to check, up and down the stack, if a message was marked as IDeadLetterSuppression anywhere within
| if (message == null) throw new InvalidMessageException("Message is null"); | ||
| var i = message as Identify; | ||
| if (i != null) | ||
| switch (message) |
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Refomatting - nothing of significance here
| public void Enqueue(IActorRef receiver, Envelope envelope) | ||
| { | ||
| if (envelope.Message is DeadLetter) | ||
| if (envelope.Message is AllDeadLetters) |
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Important fix - now that we can produce SupressedDeadLetters more easily, this safety check has to be expanded to encompass AllDeadLetters and their derived types, otherwise this will produce a StackOverflowException.
| /// <exception cref="ArgumentNullException"> | ||
| /// This exception is thrown when either the sender or the recipient is undefined. | ||
| /// </exception> | ||
| public SuppressedDeadLetter(IDeadLetterSuppression message, IActorRef sender, IActorRef recipient) : base(message, sender, recipient) |
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Breaking API change here, kind of - needed to relax this type constraint otherwise we'd lose data in the SuppressedDeadLetter logging
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Changes
A Phobos customer noticed many
DeadLettermessages appearing only when Phobos was enabled, but not when it was disabled - as it turns out, this is because Phobos' payload for propagating trace information transparently through theActorSystemis anIWrappedMessageand the dead letter logging infrastructure in Akka.NET doesn't account for that accurately.Checklist
For significant changes, please ensure that the following have been completed (delete if not relevant):