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Rust Actix simple Actor communication
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use actix::prelude::*; | |
/// Define message | |
#[derive(Message)] | |
#[rtype(result = "Result<String, std::io::Error>")] | |
struct WhatsYourName; | |
#[derive(Message)] | |
#[rtype(result = "()")] | |
struct SetYourName { | |
name: String, | |
} | |
struct MyActor { | |
name: String, | |
} | |
impl Actor for MyActor { | |
type Context = Context<Self>; | |
fn started(&mut self, ctx: &mut Context<Self>) { | |
println!("Actor {} is alive", self.name); | |
} | |
} | |
/// Define handler for `WhatsYourName` message | |
impl Handler<WhatsYourName> for MyActor { | |
type Result = Result<String, std::io::Error>; | |
fn handle(&mut self, msg: WhatsYourName, ctx: &mut Context<Self>) -> Self::Result { | |
Ok(self.name.clone()) | |
} | |
} | |
/// Define handler for `SetYourName` message | |
impl Handler<SetYourName> for MyActor { | |
type Result = (); | |
fn handle(&mut self, msg: SetYourName, ctx: &mut Context<Self>) -> Self::Result { | |
self.name = msg.name.clone(); | |
println!("New name {} is set", msg.name); | |
} | |
} | |
async fn ask_and_print_name(addr: &Addr<MyActor>) { | |
let result = addr.send(WhatsYourName).await; | |
match result { | |
Ok(res) => println!("Got result: {}", res.unwrap()), | |
Err(err) => println!("Got error: {}", err), | |
} | |
} | |
#[actix_rt::main] | |
async fn main() { | |
// start new actor | |
let addr = MyActor { | |
name: String::from("Francis"), | |
} | |
.start(); | |
ask_and_print_name(&addr).await; | |
addr.send(SetYourName { | |
name: String::from("John"), | |
}) | |
.await; | |
let result = addr.send(WhatsYourName).await; | |
ask_and_print_name(&addr).await; | |
// stop system and exit | |
System::current().stop(); | |
} |
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