FromFn

volo_http::server::middleware

Struct FromFn 

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pub struct FromFn<S, F, T, B, B2, E2> { /* private fields */ }
Available on crate feature server only.
Expand description

Service implementation from FromFnLayer

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impl<S, F, T, B, B2, E2> Clone for FromFn<S, F, T, B, B2, E2>
where S: Clone, F: Clone,

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fn clone(&self) -> Self

Returns a duplicate 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<S, F, T, B, B2, E2> Service<ServerContext, Request<B>> for FromFn<S, F, T, B, B2, E2>
where S: Service<ServerContext, Request<B2>, Response = Response, Error = E2> + Clone + Send + Sync + 'static, F: for<'r> MiddlewareHandlerFromFn<'r, T, B, B2, E2> + Sync, B: Send, B2: 'static,

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type Response = Response<Body>

Responses given by the service.
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type Error = Infallible

Errors produced by the service.
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async fn call( &self, cx: &mut ServerContext, req: Request<B>, ) -> Result<Self::Response, Self::Error>

Available on crate feature service_send only.
Process the request and return the response asynchronously.

Auto Trait Implementations§

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impl<S, F, T, B, B2, E2> Freeze for FromFn<S, F, T, B, B2, E2>
where S: Freeze, F: Freeze,

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impl<S, F, T, B, B2, E2> RefUnwindSafe for FromFn<S, F, T, B, B2, E2>
where S: RefUnwindSafe, F: RefUnwindSafe,

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impl<S, F, T, B, B2, E2> Send for FromFn<S, F, T, B, B2, E2>
where S: Send, F: Send,

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impl<S, F, T, B, B2, E2> Sync for FromFn<S, F, T, B, B2, E2>
where S: Sync, F: Sync,

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impl<S, F, T, B, B2, E2> Unpin for FromFn<S, F, T, B, B2, E2>
where S: Unpin, F: Unpin,

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impl<S, F, T, B, B2, E2> UnwindSafe for FromFn<S, F, T, B, B2, E2>
where S: UnwindSafe, F: 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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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> 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> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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, Cx, Req> ServiceExt<Cx, Req> for T
where T: Service<Cx, Req>,

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fn map_err<E, F>(self, f: F) -> MapErr<T, F>
where F: FnOnce(<T as Service<Cx, Req>>::Error) -> E,

Maps this service’s error value to a different value. Read more
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fn map_response<F, Response>(self, f: F) -> MapResponse<T, F>
where F: FnOnce(<T as Service<Cx, Req>>::Response) -> Response,

Maps this service’s response value to a different value. Read more
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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