pub enum Either<A, B> {
A(A),
B(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>
impl<'pin, A, B> Unpin for Either<A, B>where
__Either<'pin, A, B>: Unpin,
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> 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§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)source§impl<T> FutureExt for T
impl<T> FutureExt for T
source§fn map<U, F>(self, f: F) -> Map<Self, F>
fn map<U, F>(self, f: F) -> Map<Self, F>
Map this future’s output to a different type, returning a new future of
the resulting type. Read more
source§fn map_into<U>(self) -> MapInto<Self, U>
fn map_into<U>(self) -> MapInto<Self, U>
Map this future’s output to a different type, returning a new future of
the resulting type. Read more
source§fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>
fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F>
Chain on a computation for when a future finished, passing the result of
the future to the provided closure
f
. Read moresource§fn left_future<B>(self) -> Either<Self, B>
fn left_future<B>(self) -> Either<Self, B>
source§fn right_future<A>(self) -> Either<A, Self>
fn right_future<A>(self) -> Either<A, Self>
source§fn into_stream(self) -> IntoStream<Self>where
Self: Sized,
fn into_stream(self) -> IntoStream<Self>where
Self: Sized,
Convert this future into a single element stream. Read more
source§fn flatten(self) -> Flatten<Self>
fn flatten(self) -> Flatten<Self>
Flatten the execution of this future when the output of this
future is itself another future. Read more
source§fn flatten_stream(self) -> FlattenStream<Self>
fn flatten_stream(self) -> FlattenStream<Self>
Flatten the execution of this future when the successful result of this
future is a stream. Read more
source§fn fuse(self) -> Fuse<Self>where
Self: Sized,
fn fuse(self) -> Fuse<Self>where
Self: Sized,
Fuse a future such that
poll
will never again be called once it has
completed. This method can be used to turn any Future
into a
FusedFuture
. Read moresource§fn inspect<F>(self, f: F) -> Inspect<Self, F>
fn inspect<F>(self, f: F) -> Inspect<Self, F>
Do something with the output of a future before passing it on. Read more
source§fn catch_unwind(self) -> CatchUnwind<Self>where
Self: Sized + UnwindSafe,
fn catch_unwind(self) -> CatchUnwind<Self>where
Self: Sized + UnwindSafe,
Catches unwinding panics while polling the future. Read more
Create a cloneable handle to this future where all handles will resolve
to the same result. Read more
source§fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)where
Self: Sized,
fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)where
Self: Sized,
Turn this future into a future that yields
()
on completion and sends
its output to another future on a separate task. Read moresource§fn boxed<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a>>
fn boxed<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + Send + 'a>>
Wrap the future in a Box, pinning it. Read more
source§fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>>where
Self: Sized + 'a,
fn boxed_local<'a>(self) -> Pin<Box<dyn Future<Output = Self::Output> + 'a>>where
Self: Sized + 'a,
Wrap the future in a Box, pinning it. Read more
source§fn unit_error(self) -> UnitError<Self>where
Self: Sized,
fn unit_error(self) -> UnitError<Self>where
Self: Sized,
Turns a
Future<Output = T>
into a
TryFuture<Ok = T, Error = ()
>.source§fn never_error(self) -> NeverError<Self>where
Self: Sized,
fn never_error(self) -> NeverError<Self>where
Self: Sized,
Turns a
Future<Output = T>
into a
TryFuture<Ok = T, Error = Never
>.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<F> IntoFuture for Fwhere
F: Future,
impl<F> IntoFuture for Fwhere
F: Future,
§type IntoFuture = F
type IntoFuture = F
Which kind of future are we turning this into?
source§fn into_future(self) -> <F as IntoFuture>::IntoFuture
fn into_future(self) -> <F as IntoFuture>::IntoFuture
Creates a future from a value. Read more
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_and(&mut self) -> ReadyAnd<'_, Self, Request>where
Self: Sized,
fn ready_and(&mut self) -> ReadyAnd<'_, Self, Request>where
Self: Sized,
👎Deprecated since 0.4.6: please use the
ServiceExt::ready
method insteadYields 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 with the providing 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 filter_async<F, NewRequest>(self, filter: F) -> AsyncFilter<Self, F>where
Self: Sized,
F: AsyncPredicate<NewRequest>,
fn filter_async<F, NewRequest>(self, filter: F) -> AsyncFilter<Self, F>where
Self: Sized,
F: AsyncPredicate<NewRequest>,
Composes this service with an
AsyncFilter
that conditionally accepts or
rejects requests based on an [async predicate]. Read moresource§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
source§impl<Fut> TryFutureExt for Fut
impl<Fut> TryFutureExt for Fut
source§fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok>
fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok>
source§fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>
fn map_ok<T, F>(self, f: F) -> MapOk<Self, F>
Maps this future’s success value to a different value. Read more
source§fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E>
fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E>
Maps this future’s success value to a different value, and permits for error handling resulting in the same type. Read more
source§fn map_err<E, F>(self, f: F) -> MapErr<Self, F>
fn map_err<E, F>(self, f: F) -> MapErr<Self, F>
Maps this future’s error value to a different value. Read more
source§fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>
fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F>
Executes another future after this one resolves successfully. The
success value is passed to a closure to create this subsequent future. Read more
source§fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>
fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F>
Executes another future if this one resolves to an error. The
error value is passed to a closure to create this subsequent future. Read more
source§fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>
fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F>
Do something with the success value of a future before passing it on. Read more
source§fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>
fn inspect_err<F>(self, f: F) -> InspectErr<Self, F>
Do something with the error value of a future before passing it on. Read more
source§fn try_flatten(self) -> TryFlatten<Self, Self::Ok>
fn try_flatten(self) -> TryFlatten<Self, Self::Ok>
Flatten the execution of this future when the successful result of this
future is another future. Read more
source§fn try_flatten_stream(self) -> TryFlattenStream<Self>
fn try_flatten_stream(self) -> TryFlattenStream<Self>
Flatten the execution of this future when the successful result of this
future is a stream. Read more