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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
use std::convert::Infallible;
use std::future::Future;
use std::net::SocketAddr;
use std::pin::Pin;
use std::task::{Context, Poll};
use futures_util::future::TryFuture;
use hyper::service::Service;
use pin_project::pin_project;
use crate::reject::IsReject;
use crate::reply::{Reply, Response};
use crate::route::{self, Route};
use crate::{Filter, Request};
/// Convert a `Filter` into a `Service`.
///
/// Filters are normally what APIs are built on in warp. However, it can be
/// useful to convert a `Filter` into a [`Service`][Service], such as if
/// further customizing a `hyper::Service`, or if wanting to make use of
/// the greater [Tower][tower] set of middleware.
///
/// # Example
///
/// Running a `warp::Filter` on a regular `hyper::Server`:
///
/// ```
/// # async fn run() -> Result<(), Box<dyn std::error::Error>> {
/// use std::convert::Infallible;
/// use warp::Filter;
///
/// // Our Filter...
/// let route = warp::any().map(|| "Hello From Warp!");
///
/// // Convert it into a `Service`...
/// let svc = warp::service(route);
///
/// // Typical hyper setup...
/// let make_svc = hyper::service::make_service_fn(move |_| async move {
/// Ok::<_, Infallible>(svc)
/// });
///
/// hyper::Server::bind(&([127, 0, 0, 1], 3030).into())
/// .serve(make_svc)
/// .await?;
/// # Ok(())
/// # }
/// ```
///
/// [Service]: https://docs.rs/hyper/0.13.*/hyper/service/trait.Service.html
/// [tower]: https://docs.rs/tower
pub fn service<F>(filter: F) -> FilteredService<F>
where
F: Filter,
<F::Future as TryFuture>::Ok: Reply,
<F::Future as TryFuture>::Error: IsReject,
{
FilteredService { filter }
}
#[derive(Copy, Clone, Debug)]
pub struct FilteredService<F> {
filter: F,
}
impl<F> FilteredService<F>
where
F: Filter,
<F::Future as TryFuture>::Ok: Reply,
<F::Future as TryFuture>::Error: IsReject,
{
#[inline]
pub(crate) fn call_with_addr(
&self,
req: Request,
remote_addr: Option<SocketAddr>,
) -> FilteredFuture<F::Future> {
debug_assert!(!route::is_set(), "nested route::set calls");
let route = Route::new(req, remote_addr);
let fut = route::set(&route, || self.filter.filter(super::Internal));
FilteredFuture { future: fut, route }
}
}
impl<F> Service<Request> for FilteredService<F>
where
F: Filter,
<F::Future as TryFuture>::Ok: Reply,
<F::Future as TryFuture>::Error: IsReject,
{
type Response = Response;
type Error = Infallible;
type Future = FilteredFuture<F::Future>;
fn poll_ready(&mut self, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
Poll::Ready(Ok(()))
}
#[inline]
fn call(&mut self, req: Request) -> Self::Future {
self.call_with_addr(req, None)
}
}
#[pin_project]
#[derive(Debug)]
pub struct FilteredFuture<F> {
#[pin]
future: F,
route: ::std::cell::RefCell<Route>,
}
impl<F> Future for FilteredFuture<F>
where
F: TryFuture,
F::Ok: Reply,
F::Error: IsReject,
{
type Output = Result<Response, Infallible>;
#[inline]
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
debug_assert!(!route::is_set(), "nested route::set calls");
let pin = self.project();
let fut = pin.future;
match route::set(pin.route, || fut.try_poll(cx)) {
Poll::Ready(Ok(ok)) => Poll::Ready(Ok(ok.into_response())),
Poll::Pending => Poll::Pending,
Poll::Ready(Err(err)) => {
tracing::debug!("rejected: {:?}", err);
Poll::Ready(Ok(err.into_response()))
}
}
}
}
|