pub enum Either<A, B> {
Left(A),
Right(B),
}
Expand description
Combine two different service types into a single type.
Both services must be of the same request, response, and error types.
Either
is useful for handling conditional branching in service middleware
to different inner service types.
Variants§
Trait Implementations§
source§impl<A, B, Request> Service<Request> for Either<A, B>
impl<A, B, Request> Service<Request> for Either<A, B>
source§type Future = EitherResponseFuture<<A as Service<Request>>::Future, <B as Service<Request>>::Future>
type Future = EitherResponseFuture<<A as Service<Request>>::Future, <B as Service<Request>>::Future>
The future response value.
impl<A: Copy, B: Copy> Copy for Either<A, B>
Auto Trait Implementations§
impl<A, B> Freeze for Either<A, B>
impl<A, B> RefUnwindSafe for Either<A, B>where
A: RefUnwindSafe,
B: RefUnwindSafe,
impl<A, B> Send for Either<A, B>
impl<A, B> Sync for Either<A, B>
impl<A, B> Unpin for Either<A, B>
impl<A, B> UnwindSafe for Either<A, B>where
A: UnwindSafe,
B: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<M, S, Target, Request> MakeService<Target, Request> for M
impl<M, S, Target, Request> MakeService<Target, Request> for M
source§fn poll_ready(
&mut self,
cx: &mut Context<'_>,
) -> Poll<Result<(), <M as MakeService<Target, Request>>::MakeError>>
fn poll_ready( &mut self, cx: &mut Context<'_>, ) -> Poll<Result<(), <M as MakeService<Target, Request>>::MakeError>>
Returns
Poll::Ready
when the factory is able to create more services. Read moresource§fn make_service(
&mut self,
target: Target,
) -> <M as MakeService<Target, Request>>::Future
fn make_service( &mut self, target: Target, ) -> <M as MakeService<Target, Request>>::Future
Create and return a new service value asynchronously.
source§fn into_service(self) -> IntoService<Self, Request>where
Self: Sized,
fn into_service(self) -> IntoService<Self, Request>where
Self: Sized,
source§fn as_service(&mut self) -> AsService<'_, Self, Request>where
Self: Sized,
fn as_service(&mut self) -> AsService<'_, Self, Request>where
Self: Sized,
source§impl<T, Request> ServiceExt<Request> for T
impl<T, Request> ServiceExt<Request> for T
source§fn ready(&mut self) -> Ready<'_, Self, Request> ⓘwhere
Self: Sized,
fn ready(&mut self) -> Ready<'_, Self, Request> ⓘwhere
Self: Sized,
Yields a mutable reference to the service when it is ready to accept a request.
source§fn ready_oneshot(self) -> ReadyOneshot<Self, Request> ⓘwhere
Self: Sized,
fn ready_oneshot(self) -> ReadyOneshot<Self, Request> ⓘwhere
Self: Sized,
Yields the service when it is ready to accept a request.
source§fn oneshot(self, req: Request) -> Oneshot<Self, Request> ⓘwhere
Self: Sized,
fn oneshot(self, req: Request) -> Oneshot<Self, Request> ⓘwhere
Self: Sized,
Consume this
Service
, calling it with the provided request once it is ready.source§fn and_then<F>(self, f: F) -> AndThen<Self, F>
fn and_then<F>(self, f: F) -> AndThen<Self, F>
Executes a new future after this service’s future resolves. This does
not alter the behaviour of the
poll_ready
method. Read moresource§fn map_response<F, Response>(self, f: F) -> MapResponse<Self, F>
fn map_response<F, Response>(self, f: F) -> MapResponse<Self, F>
Maps this service’s response value to a different value. This does not
alter the behaviour of the
poll_ready
method. Read moresource§fn map_err<F, Error>(self, f: F) -> MapErr<Self, F>
fn map_err<F, Error>(self, f: F) -> MapErr<Self, F>
Maps this service’s error value to a different value. This does not
alter the behaviour of the
poll_ready
method. Read moresource§fn map_result<F, Response, Error>(self, f: F) -> MapResult<Self, F>
fn map_result<F, Response, Error>(self, f: F) -> MapResult<Self, F>
Maps this service’s result type (
Result<Self::Response, Self::Error>
)
to a different value, regardless of whether the future succeeds or
fails. Read moresource§fn map_request<F, NewRequest>(self, f: F) -> MapRequest<Self, F>
fn map_request<F, NewRequest>(self, f: F) -> MapRequest<Self, F>
Composes a function in front of the service. Read more
source§fn then<F, Response, Error, Fut>(self, f: F) -> Then<Self, F>
fn then<F, Response, Error, Fut>(self, f: F) -> Then<Self, F>
Composes an asynchronous function after this service. Read more
source§fn map_future<F, Fut, Response, Error>(self, f: F) -> MapFuture<Self, F>
fn map_future<F, Fut, Response, Error>(self, f: F) -> MapFuture<Self, F>
Composes a function that transforms futures produced by the service. Read more