Trait MessageHandler

pub trait MessageHandler:
    Actor
    + Send
    + 'static {
    // Required method
    fn handle(
        &mut self,
        msg_any: Box<dyn Any + Send>,
        actor_ref: &ActorRef<Self>,
    ) -> impl Future<Output = Result<Box<dyn Any + Send>>> + Send;
}

A trait for type-erased message handling within the actor system.

This trait is typically implemented automatically by the impl_message_handler! macro. It enables the actor system to handle messages of different types by downcasting them to their concrete types before passing them to the actor’s specific Message::handle implementation. This trait powers the message processing capabilities of actors.

Required Methods

fn handle( &mut self, msg_any: Box<dyn Any + Send>, actor_ref: &ActorRef<Self>, ) -> impl Future<Output = Result<Box<dyn Any + Send>>> + Send

Handles a type-erased message.

The implementation should attempt to downcast msg_any to one of the message types the actor supports and then call the corresponding Message::handle method.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors