Already asked this question on Stackoverflow:
https://stackoverflow.com/questions/56202768/how-to-implement-factory-of-akka-actors
Let's say I have DAO Actors (CassDaoActor, VerticaDaoActor, etc) that
respond to message 'Read'.
First of all, is there a way to express a interface or abstract class that
defines the message 'Read' that extending actors should implement?
Now assume it's only at runtime that I could get to know which Actor needs
to be created based on the configured db. For example, if configured db is
cassandra, I need to create CassDaoActor, etc. This apparently is a typical
use case for Factory Method Pattern as we know. I want to understand how
can we implement such a thing? Evidently we can't pass "context" around
since it looses content outside the scope of the actor.
Please suggest.
What I have tried so far is that I am returning respective props based on
the configured db to the actor within which I need to create these actors.
object `package` {
val CASS = "cass"
val VERTICA = "vertica"
def getDAOProps(db: String): Props = db match {
case CASS => CassDaoActor.props
case VERTICA => VerticaDaoActor.props
}}
// SupervisorActorval db = configuredDb()
context.actorOf(getDAOProps(db), db)
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