is passing a initial state paramter as the first message from the parent of a actor on creation a antipattern ?? I would like to use DI for the services and i see this as a way to achieve it as the initial state is a runtime value
Also is a factory Service containing top lvl IActorrefs an ok approach or should you really try and steer clear of DI ?
@ayoung akka doesn't keep track of your actors ;) You can think of actor children as part of the state:
- You would need to store that child hierarchy somewhere (you don't need to use Akka.Persistence, maybe a simple db request would be enough)
- If you're using cluster sharding, config key
remember-entities=truewill serve similar role (using Akka.Persistence). - If you have a cluster, you could potentially use Akka.DistributedData and store child actors using something like
ORSet<>. This set will be replicated over other cluster nodes, so when your actor system will come back up, it just need to Get the value of the ORSet from the corresponding key and restore children based on that data.