SyncArbiter我正在尝试使用一个供不同参与者使用的 10 个 Redis 连接池。假设我们有一个名叫 Bob 的演员，他必须使用 Redis 演员来完成它的任务。
虽然这可以通过以下方式实现：
// crate, use and mod statements have been omitted to lessen clutter
/// FILE main.rs
pub struct AppState {
pub redis: Addr<Redis>,
pub bob: Addr<Bob>
}
fn main() {
let system = actix::System::new("theatre");
server::new(move || {
let redis_addr = SyncArbiter::start(10, || Redis::new("redis://127.0.0.1").unwrap());
let bob_addr = SyncArbiter::start(10, || Bob::new());
let state = AppState {
redis: redis_addr,
bob: bob_addr
};
App::with_state(state).resource("/bob/eat", |r| {
r.method(http::Method::POST)
.with_async(controllers::bob::eat)
})
})
.bind("0.0.0.0:8080")
.unwrap()
.start();
println!("Server started.");
system.run();
}
/// FILE controllers/bob.rs
pub struct Food {
name: String,
kcal: u64
}
pub fn eat(
(req, state): (Json<Food>, State<AppState>),
) -> impl Future<Item = HttpResponse, Error = Error> {
state
.bob
.send(Eat::new(req.into_inner()))
.from_err()
.and_then(|res| match res {
Ok(val) => {
println!("==== BODY ==== {:?}", val);
Ok(HttpResponse::Ok().into())
}
Err(_) => Ok(HttpResponse::InternalServerError().into()),
})
}
/// FILE actors/redis.rs
#[derive(Debug)]
pub struct Redis {
pub client: Client
}
pub struct RunCommand(Cmd);
impl RunCommand {
pub fn new(cmd: Cmd) -> Self {
RunCommand(cmd)
}
}
impl Message for RunCommand {
type Result = Result<RedisResult<String>, ()>;
}
impl Actor for Redis {
type Context = SyncContext<Self>;
}
impl Handler<RunCommand> for Redis {
type Result = Result<RedisResult<String>, ()>;
fn handle(&mut self, msg: RunCommand, _context: &mut Self::Context) -> Self::Result {
println!("Redis received command!");
Ok(Ok("OK".to_string()))
}
}
impl Redis {
pub fn new(url: &str) -> Result<Self, RedisError> {
let client = match Client::open(url) {
Ok(client) => client,
Err(error) => return Err(error)
};
let redis = Redis {
client: client,
};
Ok(redis)
}
}
/// FILE actors/bob.rs
pub struct Bob;
pub struct Eat(Food);
impl Message for Eat {
type Result = Result<Bob, ()>;
}
impl Actor for Eat {
type Context = SyncContext<Self>;
}
impl Handler<Eat> for Bob {
type Result = Result<(), ()>;
fn handle(&mut self, msg: Eat, _context: &mut Self::Context) -> Self::Result {
println!("Bob received {:?}", &msg);
// How to get a Redis actor and pass data to it here?
Ok(msg.datapoint)
}
}
impl Bob {
pub fn new() -> () {
Bob {}
}
}
从 Bob 中的上述句柄实现，我们不清楚 Bob 是如何获得 Redis Actor 的地址的。或将任何消息发送给任何Actor运行在SyncArbiter.
Arbiter使用常规和 a也可以实现相同的目的，Registry但据我所知，Actix 不允许多个相同的演员（例如，我们不能使用常规启动 10 个 Redis 演员Arbiter）。
正式化我的问题：
- 有没有
Registry适合SyncArbiter演员的 - 我可以在常规中启动多个相同类型的演员吗
Arbiter - 是否有更好/更规范的方式来实现连接池
编辑
版本：
- 行动 0.7.9
- actix_web 0.7.19
- 期货=“0.1.26”
- 生锈 1.33.0