boluo_core/service/
map_request.rs

1use super::Service;
2
3/// [`map_request`]返回的服务。
4///
5/// [`map_request`]: crate::service::ServiceExt::map_request
6#[derive(Clone, Copy)]
7pub struct MapRequest<S, F> {
8    service: S,
9    f: F,
10}
11
12impl<S, F> MapRequest<S, F> {
13    /// 创建一个新的[`MapRequest`]服务。
14    pub fn new(service: S, f: F) -> Self {
15        Self { service, f }
16    }
17}
18
19impl<S, F, R1, R2> Service<R1> for MapRequest<S, F>
20where
21    S: Service<R2>,
22    F: Fn(R1) -> R2 + Send + Sync,
23{
24    type Response = S::Response;
25    type Error = S::Error;
26
27    fn call(&self, req: R1) -> impl Future<Output = Result<Self::Response, Self::Error>> + Send {
28        self.service.call((self.f)(req))
29    }
30}
31
32impl<S, F> std::fmt::Debug for MapRequest<S, F>
33where
34    S: std::fmt::Debug,
35{
36    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
37        f.debug_struct("MapRequest")
38            .field("service", &self.service)
39            .field("f", &std::any::type_name::<F>())
40            .finish()
41    }
42}
boluo_core/service/map_request.rs

boluo_core/service/
map_request.rs
