超时中间件

超时中间件

原生写法

use hyperlane::{
    tokio::{
        spawn,
        time::{sleep, timeout},
    },
    *,
};
use std::time::Duration;

struct HttpVersionMiddleware;
struct TimeoutMiddleware;
struct IndexRoute;
struct ResponseMiddleware;

impl ServerHook for HttpVersionMiddleware {
    async fn new(_ctx: &Context) -> Self {
        Self
    }

    async fn handle(self, ctx: &Context) {
        ctx.set_response_version(HttpVersion::HTTP1_1).await;
    }
}

impl ServerHook for TimeoutMiddleware {
    async fn new(_ctx: &Context) -> Self {
        Self
    }

    async fn handle(self, ctx: &Context) {
        let ctx_clone: Context = ctx.clone();
        spawn(async move {
            timeout(Duration::from_millis(100), async move {
                ctx_clone
                    .set_response_status_code(504)
                    .await
                    .set_response_body("timeout")
                    .await
                    .send()
                    .await
                    .unwrap();
                ctx_clone.aborted().await;
            })
            .await
            .unwrap();
        });
    }
}

impl ServerHook for IndexRoute {
    async fn new(_ctx: &Context) -> Self {
        Self
    }

    async fn handle(self, ctx: &Context) {
        sleep(Duration::from_secs(1)).await;
        ctx.set_response_status_code(200)
            .await
            .set_response_body("Hello, world!")
            .await;
    }
}

impl ServerHook for ResponseMiddleware {
    async fn new(_ctx: &Context) -> Self {
        Self
    }

    async fn handle(self, ctx: &Context) {
        ctx.send().await.unwrap();
    }
}

#[tokio::main]
async fn main() {
    Server::new()
        .await
        .request_middleware::<HttpVersionMiddleware>()
        .await
        .request_middleware::<TimeoutMiddleware>()
        .await
        .response_middleware::<ResponseMiddleware>()
        .await
        .route::<IndexRoute>("/")
        .await
        .run()
        .await
        .unwrap()
        .wait()
        .await
}

宏写法

use hyperlane::{
    tokio::{
        spawn,
        time::{sleep, timeout},
    },
    *,
};
use hyperlane_utils::*;
use std::time::Duration;

#[request_middleware(1)]
struct HttpVersionMiddleware;
#[request_middleware(2)]
struct TimeoutMiddleware;
#[route("/")]
struct IndexRoute;
#[response_middleware(1)]
struct ResponseMiddleware;

impl ServerHook for HttpVersionMiddleware {
    async fn new(_ctx: &Context) -> Self {
        Self
    }

    #[response_version(HttpVersion::HTTP1_1)]
    async fn handle(self, ctx: &Context) {}
}

impl ServerHook for TimeoutMiddleware {
    async fn new(_ctx: &Context) -> Self {
        Self
    }

    async fn handle(self, ctx: &Context) {
        let ctx_clone: Context = ctx.clone();
        spawn(async move {
            timeout(Duration::from_millis(100), async move {
                ctx_clone
                    .set_response_status_code(504)
                    .await
                    .set_response_body("timeout")
                    .await
                    .send()
                    .await
                    .unwrap();
                ctx_clone.aborted().await;
            })
            .await
            .unwrap();
        });
    }
}

impl ServerHook for IndexRoute {
    async fn new(_ctx: &Context) -> Self {
        Self
    }

    #[response_status_code(200)]
    #[response_body("Hello, world!")]
    async fn handle(self, ctx: &Context) {
        sleep(Duration::from_secs(1)).await;
    }
}

impl ServerHook for ResponseMiddleware {
    async fn new(_ctx: &Context) -> Self {
        Self
    }

    #[send]
    async fn handle(self, ctx: &Context) {}
}

#[tokio::main]
async fn main() {
    Server::new().await.run().await.unwrap().wait().await
}

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