tonic/transport/channel/service/
add_origin.rs

Help
1use crate::transport::channel::BoxFuture;
2use http::uri::Authority;
3use http::uri::Scheme;
4use http::{Request, Uri};
5use std::task::{Context, Poll};
6use tower_service::Service;
7
8#[derive(Debug)]
9pub(crate) struct AddOrigin<T> {
10    inner: T,
11    scheme: Option<Scheme>,
12    authority: Option<Authority>,
13}
14
15impl<T> AddOrigin<T> {
16    pub(crate) fn new(inner: T, origin: Uri) -> Self {
17        let http::uri::Parts {
18            scheme, authority, ..
19        } = origin.into_parts();
20
21        Self {
22            inner,
23            scheme,
24            authority,
25        }
26    }
27}
28
29impl<T, ReqBody> Service<Request<ReqBody>> for AddOrigin<T>
30where
31    T: Service<Request<ReqBody>>,
32    T::Future: Send + 'static,
33    T::Error: Into<crate::Error>,
34{
35    type Response = T::Response;
36    type Error = crate::Error;
37    type Future = BoxFuture<'static, Result<Self::Response, Self::Error>>;
38
39    fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
40        self.inner.poll_ready(cx).map_err(Into::into)
41    }
42
43    fn call(&mut self, req: Request<ReqBody>) -> Self::Future {
44        if self.scheme.is_none() || self.authority.is_none() {
45            let err = crate::transport::Error::new_invalid_uri();
46            return Box::pin(async move { Err::<Self::Response, _>(err.into()) });
47        }
48
49        // Split the request into the head and the body.
50        let (mut head, body) = req.into_parts();
51
52        // Update the request URI
53        head.uri = {
54            // Split the request URI into parts.
55            let mut uri: http::uri::Parts = head.uri.into();
56            // Update the URI parts, setting hte scheme and authority
57            uri.scheme = self.scheme.clone();
58            uri.authority = self.authority.clone();
59
60            http::Uri::from_parts(uri).expect("valid uri")
61        };
62
63        let request = Request::from_parts(head, body);
64
65        let fut = self.inner.call(request);
66
67        Box::pin(async move { fut.await.map_err(Into::into) })
68    }
69}
tonic/transport/channel/service/add_origin.rs

tonic/transport/channel/service/
add_origin.rs
