Hi,
I encountered this problem while trying to write a program that has
some sort of ability to "undo" its own action. I thought this data
structure could do the trick: originalValue[String], changedValue[String],
actorAddress[String], message[??]. Since Akka actor can send messages
according to the URI, I imagine that I can create a RecoverActor that sends
the original message with original value back to that Actor. Easy.
However, I run into two problems shortly after. First one should be easy
and is caused due to my inexperience with Akka framework: how does an actor
know its own absolute URI? Second problem, all messages in Akka are either
classes or objects. It's almost impossible to store such data type into a
database and I even tried Redis (thought it could somehow magically allow
me to do so). How can I possibly achieve this "undo" action?
I'm using Scala with Akka btw.
Any idea?
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