tower::util

Struct BoxCloneSyncService

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pub struct BoxCloneSyncService<T, U, E>(/* private fields */);
Available on crate feature util only.
Expand description

A Clone + Send + Sync boxed Service.

BoxCloneSyncService turns a service into a trait object, allowing the response future type to be dynamic, and allowing the service to be cloned and shared.

This is similar to BoxCloneService except the resulting service implements Sync.

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impl<T, U, E> BoxCloneSyncService<T, U, E>

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pub fn new<S>(inner: S) -> Self
where S: Service<T, Response = U, Error = E> + Clone + Send + Sync + 'static, S::Future: Send + 'static,

Create a new BoxCloneSyncService.

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pub fn layer<S>() -> LayerFn<fn(_: S) -> Self>
where S: Service<T, Response = U, Error = E> + Clone + Send + Sync + 'static, S::Future: Send + 'static,

Returns a Layer for wrapping a Service in a BoxCloneSyncService middleware.

Trait Implementations§

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impl<T, U, E> Clone for BoxCloneSyncService<T, U, E>

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fn clone(&self) -> Self

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, U, E> Debug for BoxCloneSyncService<T, U, E>

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

Formats the value using the given formatter. Read more
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impl<T, U, E> Service<T> for BoxCloneSyncService<T, U, E>

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type Response = U

Responses given by the service.
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type Error = E

Errors produced by the service.
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type Future = Pin<Box<dyn Future<Output = Result<U, E>> + Send>>

The future response value.
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fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), E>>

Returns Poll::Ready(Ok(())) when the service is able to process requests. Read more
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fn call(&mut self, request: T) -> Self::Future

Process the request and return the response asynchronously. Read more

Auto Trait Implementations§

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impl<T, U, E> Freeze for BoxCloneSyncService<T, U, E>

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impl<T, U, E> !RefUnwindSafe for BoxCloneSyncService<T, U, E>

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impl<T, U, E> Send for BoxCloneSyncService<T, U, E>

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impl<T, U, E> Sync for BoxCloneSyncService<T, U, E>

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impl<T, U, E> Unpin for BoxCloneSyncService<T, U, E>

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impl<T, U, E> !UnwindSafe for BoxCloneSyncService<T, U, E>

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, dst: *mut u8)

🔬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, 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, Request> ServiceExt<Request> for T
where T: Service<Request> + ?Sized,

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fn ready(&mut self) -> Ready<'_, Self, Request>
where Self: Sized,

Available on crate feature util only.
Yields a mutable reference to the service when it is ready to accept a request.
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fn ready_oneshot(self) -> ReadyOneshot<Self, Request>
where Self: Sized,

Available on crate feature util only.
Yields the service when it is ready to accept a request.
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fn oneshot(self, req: Request) -> Oneshot<Self, Request>
where Self: Sized,

Available on crate feature util only.
Consume this Service, calling it with the provided request once it is ready.
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fn call_all<S>(self, reqs: S) -> CallAll<Self, S>
where Self: Sized, S: Stream<Item = Request>,

Available on crate feature util only.
Process all requests from the given Stream, and produce a Stream of their responses. Read more
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fn and_then<F>(self, f: F) -> AndThen<Self, F>
where Self: Sized, F: Clone,

Available on crate feature util only.
Executes a new future after this service’s future resolves. This does not alter the behaviour of the poll_ready method. Read more
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fn map_response<F, Response>(self, f: F) -> MapResponse<Self, F>
where Self: Sized, F: FnOnce(Self::Response) -> Response + Clone,

Available on crate feature util only.
Maps this service’s response value to a different value. This does not alter the behaviour of the poll_ready method. Read more
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fn map_err<F, Error>(self, f: F) -> MapErr<Self, F>
where Self: Sized, F: FnOnce(Self::Error) -> Error + Clone,

Available on crate feature util only.
Maps this service’s error value to a different value. This does not alter the behaviour of the poll_ready method. Read more
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fn map_result<F, Response, Error>(self, f: F) -> MapResult<Self, F>
where Self: Sized, Error: From<Self::Error>, F: FnOnce(Result<Self::Response, Self::Error>) -> Result<Response, Error> + Clone,

Available on crate feature util only.
Maps this service’s result type (Result<Self::Response, Self::Error>) to a different value, regardless of whether the future succeeds or fails. Read more
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fn map_request<F, NewRequest>(self, f: F) -> MapRequest<Self, F>
where Self: Sized, F: FnMut(NewRequest) -> Request,

Available on crate feature util only.
Composes a function in front of the service. Read more
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fn then<F, Response, Error, Fut>(self, f: F) -> Then<Self, F>
where Self: Sized, Error: From<Self::Error>, F: FnOnce(Result<Self::Response, Self::Error>) -> Fut + Clone, Fut: Future<Output = Result<Response, Error>>,

Available on crate feature util only.
Composes an asynchronous function after this service. Read more
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fn map_future<F, Fut, Response, Error>(self, f: F) -> MapFuture<Self, F>
where Self: Sized, F: FnMut(Self::Future) -> Fut, Error: From<Self::Error>, Fut: Future<Output = Result<Response, Error>>,

Available on crate feature util only.
Composes a function that transforms futures produced by the service. Read more
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fn boxed(self) -> BoxService<Request, Self::Response, Self::Error>
where Self: Sized + Send + 'static, Self::Future: Send + 'static,

Available on crate feature util only.
Convert the service into a Service + Send trait object. Read more
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fn boxed_clone(self) -> BoxCloneService<Request, Self::Response, Self::Error>
where Self: Clone + Sized + Send + 'static, Self::Future: Send + 'static,

Available on crate feature util only.
Convert the service into a Service + Clone + Send trait object. 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.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes