跨域中间件

跨域中间件

原生写法

use hyperlane::*;

struct CrossMiddleware;
struct IndexRoute;
struct ResponseMiddleware;

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

    async fn handle(self, ctx: &Context) {
        ctx.set_response_version(HttpVersion::HTTP1_1)
            .await
            .set_response_header(ACCESS_CONTROL_ALLOW_ORIGIN, WILDCARD_ANY)
            .await
            .set_response_header(ACCESS_CONTROL_ALLOW_METHODS, ALL_METHODS)
            .await
            .set_response_header(ACCESS_CONTROL_ALLOW_HEADERS, WILDCARD_ANY)
            .await;
    }
}

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

    async fn handle(self, ctx: &Context) {
        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::<CrossMiddleware>()
        .await
        .response_middleware::<ResponseMiddleware>()
        .await
        .route::<IndexRoute>("/")
        .await
        .run()
        .await
        .unwrap()
        .wait()
        .await
}

宏写法

use hyperlane::*;
use hyperlane_utils::*;

#[request_middleware(1)]
struct CrossMiddleware;
#[route("/")]
struct IndexRoute;
#[response_middleware(1)]
struct ResponseMiddleware;

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

    #[response_version(HttpVersion::HTTP1_1)]
    #[response_header(ACCESS_CONTROL_ALLOW_ORIGIN, WILDCARD_ANY)]
    #[response_header(ACCESS_CONTROL_ALLOW_METHODS, ALL_METHODS)]
    #[response_header(ACCESS_CONTROL_ALLOW_HEADERS, WILDCARD_ANY)]
    async fn handle(self, ctx: &Context) {}
}

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) {}
}

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
}