Different questions about Thespian and its functionalities

[htarnacki]

hi, i hope you do not mind this type of task, collecting all my questions in one thread

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1. What is the preferable way of enforcing actor system that some named actor always exist? so:

• we create an actor system
• then we create first main named actor (A) that we want it to exist forever
• even in case of an "A" actor crash we need some mechanism to bring it back to alive

Looking into documentation i see that named actors do not have parents and therefore there is no any actor that could receive "ChildActorExited" message. But i guess that an actor system itself is receiving such a notification? So i am looking for something like this: ActorSystem().createActor(actor_class, globalName=attr, keep_alive=True)

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2. Why there is no "ask" method on an actor class? There is an actor system method "ask" but no corresponding method on an actor class. What is the reason of this? Without that how should look like normal processing like this:

• start processing of received message A
• ask some other actor for some additional data needed to process message A
• after receiving additional data process message A

Without something like "await" are we going to some kind of callback hell? (or a message/response hell? ;-)) or is there something like: self.await( BankAccountData, self.send(BankActorAddress, AskForBankAccountData(client_number) )

self.await would stop an actor processing until there is a message of type BankAccountData that an actor receive from BankActorAddress

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