Я изо всех сил пытаюсь получить постоянную ссылку, работающую с железом, не знаю, как установить подходящее время жизни. Я хочу иметь возможность повторно использовать контроллер на разных маршрутах.
Пример:
use iron::prelude::*;
use iron::typemap::Key;
use persistent::Read;
use router::Router;
pub struct Controller;
pub struct Rest {
controller: Controller,
}
impl Key for &Controller {
type Value = Self;
}
impl Rest {
pub fn run(&self) {
let router = Router::new();
let mut chain = Chain::new(router);
chain.link(Read::<&Controller>::both(&self.controller));
Iron::new(chain).http(format!("0.0.0.0:1234")).ok();
}
}
fn main() {
Rest {
controller: Controller,
}
.run();
}
[dependencies]
iron = "0.6.*"
router = "0.6.*"
persistent = "0.4.0"
error[E0478]: lifetime bound not satisfied
--> src/main.rs:12:6
|
12 | impl Key for &Controller {
| ^^^
|
note: lifetime parameter instantiated with the lifetime '_ as defined on the impl at 12:14
--> src/main.rs:12:14
|
12 | impl Key for &Controller {
| ^
= note: but lifetime parameter must outlive the static lifetime
error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'_` due to conflicting requirements
--> src/main.rs:12:6
|
12 | impl Key for &Controller {
| ^^^
|
note: first, the lifetime cannot outlive the lifetime '_ as defined on the impl at 12:14...
--> src/main.rs:12:14
|
12 | impl Key for &Controller {
| ^
= note: ...so that the types are compatible:
expected typemap::Key
found typemap::Key
= note: but, the lifetime must be valid for the static lifetime...
note: ...so that the type `&Controller` will meet its required lifetime bounds
--> src/main.rs:12:6
|
12 | impl Key for &Controller {
| ^^^