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Simplify return type of most route handlers

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This commit is contained in:
Jonas Platte 2022-01-22 16:58:32 +01:00
parent 77a87881c9
commit 5fa9190117
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GPG key ID: 7D261D771D915378
38 changed files with 358 additions and 414 deletions
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62
src/main.rs
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@ -11,7 +11,6 @@ use std::{future::Future, net::SocketAddr, sync::Arc, time::Duration};
use axum::{
extract::{FromRequest, MatchedPath},
handler::Handler,
response::IntoResponse,
routing::{get, on, MethodFilter},
Router,
@ -25,10 +24,7 @@ use http::{
Method,
};
use opentelemetry::trace::{FutureExt, Tracer};
use ruma::{
api::{IncomingRequest, Metadata},
Outgoing,
};
use ruma::{api::IncomingRequest, Outgoing};
use tokio::{signal, sync::RwLock};
use tower::ServiceBuilder;
use tower_http::{
@ -353,25 +349,15 @@ impl RouterExt for Router {
H: RumaHandler<T>,
T: 'static,
{
let meta = H::METADATA;
let method_filter = match meta.method {
Method::DELETE => MethodFilter::DELETE,
Method::GET => MethodFilter::GET,
Method::HEAD => MethodFilter::HEAD,
Method::OPTIONS => MethodFilter::OPTIONS,
Method::PATCH => MethodFilter::PATCH,
Method::POST => MethodFilter::POST,
Method::PUT => MethodFilter::PUT,
Method::TRACE => MethodFilter::TRACE,
m => panic!("Unsupported HTTP method: {:?}", m),
};
self.route(meta.path, on(method_filter, handler))
handler.add_to_router(self)
}
}
pub trait RumaHandler<T>: Handler<T> {
const METADATA: Metadata;
pub trait RumaHandler<T> {
// Can't transform to a handler without boxing or relying on the nightly-only
// impl-trait-in-traits feature. Moving a small amount of extra logic into the trait
// allows bypassing both.
fn add_to_router(self, router: Router) -> Router;
}
macro_rules! impl_ruma_handler {
@ -380,17 +366,22 @@ macro_rules! impl_ruma_handler {
#[allow(non_snake_case)]
impl<Req, E, F, Fut, $($ty,)*> RumaHandler<($($ty,)* Ruma<Req>,)> for F
where
Req: Outgoing,
Req: Outgoing + 'static,
Req::Incoming: IncomingRequest + Send,
F: FnOnce($($ty,)* Ruma<Req>) -> Fut + Clone + Send + 'static,
Fut: Future<Output = Result<
RumaResponse<<Req::Incoming as IncomingRequest>::OutgoingResponse>,
E,
>> + Send,
Fut: Future<Output = Result<<Req::Incoming as IncomingRequest>::OutgoingResponse, E>>
+ Send,
E: IntoResponse,
$( $ty: FromRequest<axum::body::Body> + Send, )*
$( $ty: FromRequest<axum::body::Body> + Send + 'static, )*
{
const METADATA: Metadata = Req::Incoming::METADATA;
fn add_to_router(self, router: Router) -> Router {
let meta = Req::Incoming::METADATA;
let method_filter = method_to_filter(meta.method);
router.route(meta.path, on(method_filter, |$( $ty: $ty, )* req| async move {
self($($ty,)* req).await.map(RumaResponse)
}))
}
}
};
}
@ -404,3 +395,18 @@ impl_ruma_handler!(T1, T2, T3, T4, T5);
impl_ruma_handler!(T1, T2, T3, T4, T5, T6);
impl_ruma_handler!(T1, T2, T3, T4, T5, T6, T7);
impl_ruma_handler!(T1, T2, T3, T4, T5, T6, T7, T8);
fn method_to_filter(method: Method) -> MethodFilter {
let method_filter = match method {
Method::DELETE => MethodFilter::DELETE,
Method::GET => MethodFilter::GET,
Method::HEAD => MethodFilter::HEAD,
Method::OPTIONS => MethodFilter::OPTIONS,
Method::PATCH => MethodFilter::PATCH,
Method::POST => MethodFilter::POST,
Method::PUT => MethodFilter::PUT,
Method::TRACE => MethodFilter::TRACE,
m => panic!("Unsupported HTTP method: {:?}", m),
};
method_filter
}