Add kameo delegate / forward examples

Cargo.lock

@@ -57,6 +57,12 @@ version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
 
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
+
 [[package]]
 name = "bytes"
 version = "1.7.2"
@@ -243,6 +249,16 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "kameo-delegate-forward"
+version = "0.1.0"
+dependencies = [
+ "futures",
+ "kameo",
+ "rand",
+ "tokio",
+]
+
 [[package]]
 name = "kameo_macros"
 version = "0.12.2"
@@ -356,6 +372,15 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77957b295656769bb8ad2b6a6b09d897d94f05c41b069aede1fcdaa675eaea04"
+dependencies = [
+ "zerocopy",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.88"
@@ -374,6 +399,36 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.5.7"
@@ -625,3 +680,24 @@ name = "windows_x86_64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "zerocopy"
+version = "0.7.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
+dependencies = [
+ "byteorder",
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.7.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]

Cargo.toml

@@ -1,3 +1,3 @@
 [workspace]
 resolver = "2"
-members = ["alpha", "futures-unordered", "kameo-actors", "my-actors"]
+members = ["alpha", "futures-unordered", "kameo-actors", "kameo-delegate-forward", "my-actors"]

kameo-delegate-forward/Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "kameo-delegate-forward"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+futures = "0.3.31"
+kameo = "0.12.2"
+rand = "0.8.5"
+tokio = { version = "1.41.1", features = ["full"] }

kameo-delegate-forward/src/main.rs

@@ -0,0 +1,79 @@
+use std::time::Duration;
+
+use futures::{stream::FuturesUnordered, StreamExt};
+use kameo::{actor::ActorRef, error::Infallible, message::Message, reply::{DelegatedReply, ForwardedReply}, request::MessageSend, Actor};
+use rand::Rng;
+
+#[derive(Actor)]
+struct PrinterServer {
+    printer: ActorRef<Printer>,
+}
+
+#[derive(Actor)]
+struct Printer;
+
+struct PrintRequest;
+
+#[derive(Debug)]
+enum PrintResponse {
+    PrintSuccess,
+}
+
+impl PrinterServer {
+    fn new(printer: ActorRef<Printer>) -> Self {
+        Self {
+            printer,
+        }
+    }
+}
+
+impl Message<PrintRequest> for PrinterServer {
+    type Reply = ForwardedReply<PrintResponse, PrintRequest, Infallible>;
+
+    async fn handle(
+            &mut self,
+            msg: PrintRequest,
+            mut ctx: kameo::message::Context<'_, Self, Self::Reply>,
+        ) -> Self::Reply {
+            ctx.forward(self.printer.clone(), msg)
+    }
+}
+
+impl Message<PrintRequest> for Printer {
+    type Reply = DelegatedReply<Result<PrintResponse, Infallible>>;
+
+    async fn handle(
+            &mut self,
+            _: PrintRequest,
+            mut ctx: kameo::message::Context<'_, Self, Self::Reply>,
+        ) -> Self::Reply {
+            let (delegated_reply, reply_sender) = ctx.reply_sender();
+
+            if let Some(tx) = reply_sender {
+                tokio::spawn(async {
+                    let random_number = rand::thread_rng().gen_range(1..10);
+
+                    tokio::time::sleep(Duration::from_secs(random_number)).await;
+                    tx.send(Ok(PrintResponse::PrintSuccess));
+                });
+            }
+
+            delegated_reply
+    }
+}
+
+#[tokio::main]
+async fn main() {
+    let printer = kameo::spawn(Printer);
+    let printer_server = kameo::spawn(PrinterServer::new(printer));
+    let mut waiter = FuturesUnordered::new();
+
+    for _ in 1..10 {
+        let print_request_delegated = printer_server.ask(PrintRequest).send();
+        waiter.push(print_request_delegated);
+    }
+
+    while let Some(response) = waiter.next().await {
+        println!("{:?}", response);
+    }
+}