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Reputation: 345

Java-Akka: Assemble message from multiple actors

I am new to Akka. I have 4 actors.

Actor1 sends Message1 to Actor4. Actor2 sends Message2 to Actor4. Actor3 sends Message3 to Actor4.

Actor4 should create Message4 when it receives 1 message of type Message1, 1 Message of type Message2 and 2 messages of type Message3.

Message4 = (Message1, Message2, Message3a, Message3b, Message3c)

What would be the best approach to do this?

Upvotes: 0

Views: 368

Answers (2)

scarpacci
scarpacci

Reputation: 9194

I agree with Snickers3192, that you can use futures. You could also look into something like the Cameo Pattern from Jamie Allen. I have created some crude examples in another stackoverflow thread. These are all Scala and not Java.

Futures and Cameo Pattern

Upvotes: 1

Derrops
Derrops

Reputation: 8107

If you have a task which depends on other tasks being completed whilst others can be done in parallel, you want to use futures, I have answered a question like this already, this is probably a duplicate question, and just a variation of the more general problem of performing tasks in parallel and distrubuting them across resources as best as possible, but anyway futures give a more clean solution to this problem in my opinion, check out my answer here Executing Dependent tasks in parallel in Java.

Upvotes: 1

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