Struct axum_extra::TypedHeader

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pub struct TypedHeader<T>(pub T);
Expand description

Extractor and response that works with typed header values from headers.

§As extractor

In general, it’s recommended to extract only the needed headers via TypedHeader rather than removing all headers with the HeaderMap extractor.

use axum::{
    routing::get,
    Router,
};
use headers::UserAgent;
use axum_extra::TypedHeader;

async fn users_teams_show(
    TypedHeader(user_agent): TypedHeader<UserAgent>,
) {
    // ...
}

let app = Router::new().route("/users/:user_id/team/:team_id", get(users_teams_show));

§As response

use axum::{
    response::IntoResponse,
};
use headers::ContentType;
use axum_extra::TypedHeader;

async fn handler() -> (TypedHeader<ContentType>, &'static str) {
    (
        TypedHeader(ContentType::text_utf8()),
        "Hello, World!",
    )
}

Tuple Fields§

§0: T

Trait Implementations§

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impl<T: Clone> Clone for TypedHeader<T>

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fn clone(&self) -> TypedHeader<T>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T: Debug> Debug for TypedHeader<T>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<T> Deref for TypedHeader<T>

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type Target = T

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl<T> DerefMut for TypedHeader<T>

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fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.
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impl<T, S> FromRequestParts<S> for TypedHeader<T>
where T: Header, S: Send + Sync,

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type Rejection = TypedHeaderRejection

If the extractor fails it’ll use this “rejection” type. A rejection is a kind of error that can be converted into a response.
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fn from_request_parts<'life0, 'life1, 'async_trait>( parts: &'life0 mut Parts, _state: &'life1 S, ) -> Pin<Box<dyn Future<Output = Result<Self, Self::Rejection>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Perform the extraction.
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impl<T> IntoResponse for TypedHeader<T>
where T: Header,

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fn into_response(self) -> Response

Create a response.
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impl<T> IntoResponseParts for TypedHeader<T>
where T: Header,

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type Error = Infallible

The type returned in the event of an error. Read more
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fn into_response_parts( self, res: ResponseParts, ) -> Result<ResponseParts, Self::Error>

Set parts of the response
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impl<T: Copy> Copy for TypedHeader<T>

Auto Trait Implementations§

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impl<T> Freeze for TypedHeader<T>
where T: Freeze,

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impl<T> RefUnwindSafe for TypedHeader<T>
where T: RefUnwindSafe,

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impl<T> Send for TypedHeader<T>
where T: Send,

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impl<T> Sync for TypedHeader<T>
where T: Sync,

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impl<T> Unpin for TypedHeader<T>
where T: Unpin,

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impl<T> UnwindSafe for TypedHeader<T>
where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> CloneToUninit for T
where T: Copy,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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impl<S, T> FromRequest<S, ViaParts> for T
where S: Send + Sync, T: FromRequestParts<S>,

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type Rejection = <T as FromRequestParts<S>>::Rejection

If the extractor fails it’ll use this “rejection” type. A rejection is a kind of error that can be converted into a response.
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fn from_request<'life0, 'async_trait>( req: Request<Body>, state: &'life0 S, ) -> Pin<Box<dyn Future<Output = Result<T, <T as FromRequest<S, ViaParts>>::Rejection>> + Send + 'async_trait>>
where 'life0: 'async_trait, T: 'async_trait,

Perform the extraction.
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impl<T, S> Handler<IntoResponseHandler, S> for T
where T: IntoResponse + Clone + Send + 'static,

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type Future = Ready<Response<Body>>

The type of future calling this handler returns.
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fn call( self, _req: Request<Body>, _state: S, ) -> <T as Handler<IntoResponseHandler, S>>::Future

Call the handler with the given request.
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fn layer<L>(self, layer: L) -> Layered<L, Self, T, S>
where L: Layer<HandlerService<Self, T, S>> + Clone, <L as Layer<HandlerService<Self, T, S>>>::Service: Service<Request<Body>>,

Apply a tower::Layer to the handler. Read more
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fn with_state(self, state: S) -> HandlerService<Self, T, S>

Convert the handler into a Service by providing the state
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impl<H, T> HandlerWithoutStateExt<T> for H
where H: Handler<T, ()>,

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fn into_service(self) -> HandlerService<H, T, ()>

Convert the handler into a Service and no state.
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fn into_make_service(self) -> IntoMakeService<HandlerService<H, T, ()>>

Convert the handler into a MakeService and no state. Read more
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fn into_make_service_with_connect_info<C>( self, ) -> IntoMakeServiceWithConnectInfo<HandlerService<H, T, ()>, C>

Convert the handler into a MakeService which stores information about the incoming connection and has no state. Read more
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more