JuniperRequest and Response are not seen as implementors of axum 0.8.x Extractors #1305
Description
I hate to write things like this because it should work, but I don't have any idea why it says that JuniperRequest doesn't implement FromRequest even if it is a last param of the axum handler, and the similar issue with JuniperResponse. I am using everything up to date in Cargo.toml, but I can paste here, too.
use axum::{debug_handler, routing::post, Extension, Router};
use juniper::{
graphql_object, EmptyMutation, EmptySubscription, RootNode,
};
use juniper_axum::{extract::JuniperRequest, response::JuniperResponse};
use std::{net::SocketAddr, sync::Arc};
use tokio::net::TcpListener;
#[derive(Clone, Copy, Debug, Default)]
pub struct Context;
#[derive(Clone, Copy, Debug)]
pub struct Query;
#[graphql_object(context = Context)]
impl Query {
fn add(a: i32, b: i32) -> i32 {
a + b
}
}
type Schema = RootNode<'static, Query, EmptyMutation<Context>, EmptySubscription<Context>>;
#[debug_handler]
async fn graphql_handler(
Extension(schema): Extension<Arc<Schema>>,
Extension(context): Extension<Context>,
JuniperRequest(req): JuniperRequest,
) -> JuniperResponse {
req.execute(schema, todo!()).await
}
#[tokio::main]
async fn main() {
let schema = Schema::new(
Query,
EmptyMutation::<Context>::new(),
EmptySubscription::<Context>::new(),
);
let app = Router::new()
.route("/graphql", post(graphql_handler))
.layer(Extension(Arc::new(schema)))
.layer(Extension(Context));
let addr = SocketAddr::from(([127, 0, 0, 1], 8080));
let listener = TcpListener::bind(addr)
.await
.unwrap_or_else(|e| panic!("failed to listen on {addr}: {e}"));
axum::serve(listener, app)
.await
.unwrap_or_else(|e| panic!("failed to serve: {e}"));
}Error is:
error[E0308]: mismatched types
--> src/main.rs:41:17
|
41 | req.execute(schema, todo!()).await
| ------- ^^^^^^ expected `&RootNode<'_, _, _, _>`, found `Arc<RootNode<'_, Query, ..., ...>>`
| |
| arguments to this method are incorrect
|
= note: expected reference `&RootNode<'_, _, _, _, _>`
found struct `Arc<RootNode<'_, Query, EmptyMutation<Context>, EmptySubscription<Context>, _>>`
note: method defined here
--> /Users/richard.jonas/.cargo/registry/src/index.crates.io-6f17d22bba15001f/juniper-0.16.1/src/http/mod.rs:297:18
|
297 | pub async fn execute<'a, QueryT, MutationT, SubscriptionT>(
| ^^^^^^^
help: consider borrowing here
|
41 | req.execute(&schema, todo!()).await
| +
warning: unreachable call
--> src/main.rs:41:9
|
41 | req.execute(schema, todo!()).await
| ^^^^^^^ ------- any code following this expression is unreachable
| |
| unreachable call
|
= note: `#[warn(unreachable_code)]` on by default
error[E0308]: mismatched types
--> src/main.rs:41:5
|
41 | req.execute(schema, todo!()).await
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `JuniperResponse`, found `GraphQLBatchResponse`
|
= note: expected struct `JuniperResponse`
found enum `GraphQLBatchResponse`
help: try wrapping the expression in `juniper_axum::response::JuniperResponse`
|
41 | juniper_axum::response::JuniperResponse(req.execute(schema, todo!()).await)
| ++++++++++++++++++++++++++++++++++++++++ +
error[E0277]: the trait bound `JuniperResponse: IntoResponse` is not satisfied
--> src/main.rs:40:6
|
40 | ) -> JuniperResponse {
| ^^^^^^^^^^^^^^^ the trait `IntoResponse` is not implemented for `JuniperResponse`
|
= help: the following other types implement trait `IntoResponse`:
&'static [u8; N]
&'static [u8]
&'static str
()
(R,)
(Response<()>, R)
(Response<()>, T1, R)
(Response<()>, T1, T2, R)
and 120 others
note: required by a bound in `__axum_macros_check_graphql_handler_into_response::{closure#0}::check`
--> src/main.rs:40:6
|
40 | ) -> JuniperResponse {
| ^^^^^^^^^^^^^^^ required by this bound in `check`
error[E0308]: mismatched types
--> src/main.rs:41:17
|
41 | req.execute(schema, todo!()).await
| ------- ^^^^^^ expected `&RootNode<'_, _, _, _>`, found `Arc<RootNode<'_, Query, ..., ...>>`
| |
| arguments to this method are incorrect
|
= note: expected reference `&RootNode<'_, _, _, _, _>`
found struct `Arc<RootNode<'static, Query, EmptyMutation<Context>, EmptySubscription<Context>, _>>`
note: method defined here
--> /Users/richard.jonas/.cargo/registry/src/index.crates.io-6f17d22bba15001f/juniper-0.16.1/src/http/mod.rs:297:18
|
297 | pub async fn execute<'a, QueryT, MutationT, SubscriptionT>(
| ^^^^^^^
help: consider borrowing here
|
41 | req.execute(&schema, todo!()).await
| +
error[E0277]: the trait bound `JuniperRequest: FromRequest<(), axum_core::extract::private::ViaParts>` is not satisfied
--> src/main.rs:39:26
|
39 | JuniperRequest(req): JuniperRequest,
| ^^^^^^^^^^^^^^ the trait `FromRequestParts<()>` is not implemented for `JuniperRequest`, which is required by `JuniperRequest: FromRequest<(), _>`
|
= note: Function argument is not a valid axum extractor.
See `https://docs.rs/axum/0.8/axum/extract/index.html` for details
= help: the following other types implement trait `FromRequestParts<S>`:
`()` implements `FromRequestParts<S>`
`(T1, T2)` implements `FromRequestParts<S>`
`(T1, T2, T3)` implements `FromRequestParts<S>`
`(T1, T2, T3, T4)` implements `FromRequestParts<S>`
`(T1, T2, T3, T4, T5)` implements `FromRequestParts<S>`
`(T1, T2, T3, T4, T5, T6)` implements `FromRequestParts<S>`
`(T1, T2, T3, T4, T5, T6, T7)` implements `FromRequestParts<S>`
`(T1, T2, T3, T4, T5, T6, T7, T8)` implements `FromRequestParts<S>`
and 27 others
= note: required for `JuniperRequest` to implement `FromRequest<(), axum_core::extract::private::ViaParts>`
note: required by a bound in `__axum_macros_check_graphql_handler_2_from_request_check`
--> src/main.rs:39:26
|
39 | JuniperRequest(req): JuniperRequest,
| ^^^^^^^^^^^^^^ required by this bound in `__axum_macros_check_graphql_handler_2_from_request_check`
error[E0277]: the trait bound `fn(Extension<Arc<RootNode<'static, Query, EmptyMutation<Context>, EmptySubscription<Context>>>>, Extension<Context>, JuniperRequest) -> impl std::future::Future<Output = JuniperResponse> {graphql_handler}: Handler<_, _>` is not satisfied
--> src/main.rs:53:33
|
53 | .route("/graphql", post(graphql_handler))
| ---- ^^^^^^^^^^^^^^^ the trait `Handler<_, _>` is not implemented for fn item `fn(Extension<Arc<RootNode<'static, Query, EmptyMutation<Context>, EmptySubscription<Context>>>>, Extension<Context>, JuniperRequest) -> ... {graphql_handler}`
| |
| required by a bound introduced by this call
|
= note: the full name for the type has been written to '/Users/richard.jonas/projects/try-new-things/rust-offer-graphql/target/debug/deps/rust_offer_graphql-6f31c9da0ab7a774.long-type-10051857777317374710.txt'
= note: consider using `--verbose` to print the full type name to the console
= note: Consider using `#[axum::debug_handler]` to improve the error message
= help: the following other types implement trait `Handler<T, S>`:
`Layered<L, H, T, S>` implements `Handler<T, S>`
`MethodRouter<S>` implements `Handler<(), S>`
note: required by a bound in `post`
--> /Users/richard.jonas/.cargo/registry/src/index.crates.io-6f17d22bba15001f/axum-0.8.1/src/routing/method_routing.rs:444:1
|
444 | top_level_handler_fn!(post, POST);
| ^^^^^^^^^^^^^^^^^^^^^^----^^^^^^^
| | |
| | required by a bound in this function
| required by this bound in `post`
= note: this error originates in the macro `top_level_handler_fn` (in Nightly builds, run with -Z macro-backtrace for more info)
Some errors have detailed explanations: E0277, E0308.
For more information about an error, try `rustc --explain E0277`.
warning: `rust-offer-graphql` (bin "rust-offer-graphql") generated 1 warning
error: could not compile `rust-offer-graphql` (bin "rust-offer-graphql") due to 9 previous errors; 1 warning emitted