1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
use std::error::Error as StdError;
use std::fmt;
use std::future::Future;
use std::marker::PhantomData;
use crate::body::Body;
use crate::service::service::Service;
use crate::{Request, Response};
/// Create a `Service` from a function.
///
/// # Example
///
/// ```
/// use bytes::Bytes;
/// use hyper::{body, Request, Response, Version};
/// use http_body_util::Full;
/// use hyper::service::service_fn;
///
/// let service = service_fn(|req: Request<body::Incoming>| async move {
/// if req.version() == Version::HTTP_11 {
/// Ok(Response::new(Full::<Bytes>::from("Hello World")))
/// } else {
/// // Note: it's usually better to return a Response
/// // with an appropriate StatusCode instead of an Err.
/// Err("not HTTP/1.1, abort connection")
/// }
/// });
/// ```
pub fn service_fn<F, R, S>(f: F) -> ServiceFn<F, R>
where
F: Fn(Request<R>) -> S,
S: Future,
{
ServiceFn {
f,
_req: PhantomData,
}
}
/// Service returned by [`service_fn`]
pub struct ServiceFn<F, R> {
f: F,
_req: PhantomData<fn(R)>,
}
impl<F, ReqBody, Ret, ResBody, E> Service<Request<ReqBody>> for ServiceFn<F, ReqBody>
where
F: Fn(Request<ReqBody>) -> Ret,
ReqBody: Body,
Ret: Future<Output = Result<Response<ResBody>, E>>,
E: Into<Box<dyn StdError + Send + Sync>>,
ResBody: Body,
{
type Response = crate::Response<ResBody>;
type Error = E;
type Future = Ret;
fn call(&self, req: Request<ReqBody>) -> Self::Future {
(self.f)(req)
}
}
impl<F, R> fmt::Debug for ServiceFn<F, R> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("impl Service").finish()
}
}
impl<F, R> Clone for ServiceFn<F, R>
where
F: Clone,
{
fn clone(&self) -> Self {
ServiceFn {
f: self.f.clone(),
_req: PhantomData,
}
}
}
impl<F, R> Copy for ServiceFn<F, R> where F: Copy {}
|
