[−][src]Enum tower::util::Either
util
only.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
One type of backing Service
.
The other type of backing Service
.
Trait Implementations
impl<A: Clone, B: Clone> Clone for Either<A, B>
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impl<A: Debug, B: Debug> Debug for Either<A, B>
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impl<A, B, T, AE, BE> Future for Either<A, B> where
A: Future<Output = Result<T, AE>>,
AE: Into<BoxError>,
B: Future<Output = Result<T, BE>>,
BE: Into<BoxError>,
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A: Future<Output = Result<T, AE>>,
AE: Into<BoxError>,
B: Future<Output = Result<T, BE>>,
BE: Into<BoxError>,
type Output = Result<T, BoxError>
The type of value produced on completion.
pub fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>
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impl<A, B, Request> Service<Request> for Either<A, B> where
A: Service<Request>,
A::Error: Into<BoxError>,
B: Service<Request, Response = A::Response>,
B::Error: Into<BoxError>,
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A: Service<Request>,
A::Error: Into<BoxError>,
B: Service<Request, Response = A::Response>,
B::Error: Into<BoxError>,
type Response = A::Response
Responses given by the service.
type Error = BoxError
Errors produced by the service.
type Future = Either<A::Future, B::Future>
The future response value.
pub fn poll_ready(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), Self::Error>>
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&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), Self::Error>>
pub fn call(&mut self, request: Request) -> Self::Future
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impl<'pin, A, B> Unpin for Either<A, B> where
__Either<'pin, A, B>: Unpin,
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__Either<'pin, A, B>: Unpin,
Auto Trait Implementations
impl<A, B> RefUnwindSafe for Either<A, B> where
A: RefUnwindSafe,
B: RefUnwindSafe,
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A: RefUnwindSafe,
B: RefUnwindSafe,
impl<A, B> Send for Either<A, B> where
A: Send,
B: Send,
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A: Send,
B: Send,
impl<A, B> Sync for Either<A, B> where
A: Sync,
B: Sync,
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A: Sync,
B: Sync,
impl<A, B> UnwindSafe for Either<A, B> where
A: UnwindSafe,
B: UnwindSafe,
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A: UnwindSafe,
B: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T> FutureExt for T where
T: Future + ?Sized,
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T: Future + ?Sized,
pub fn map<U, F>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Output) -> U,
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F: FnOnce(Self::Output) -> U,
pub fn map_into<U>(self) -> MapInto<Self, U> where
Self::Output: Into<U>,
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Self::Output: Into<U>,
pub fn then<Fut, F>(self, f: F) -> Then<Self, Fut, F> where
F: FnOnce(Self::Output) -> Fut,
Fut: Future,
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F: FnOnce(Self::Output) -> Fut,
Fut: Future,
pub fn left_future<B>(self) -> Either<Self, B> where
B: Future<Output = Self::Output>,
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B: Future<Output = Self::Output>,
pub fn right_future<A>(self) -> Either<A, Self> where
A: Future<Output = Self::Output>,
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A: Future<Output = Self::Output>,
pub fn into_stream(self) -> IntoStream<Self>
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pub fn flatten(self) -> Flatten<Self> where
Self::Output: Future,
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Self::Output: Future,
pub fn flatten_stream(self) -> FlattenStream<Self> where
Self::Output: Stream,
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Self::Output: Stream,
pub fn fuse(self) -> Fuse<Self>
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pub fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Output),
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F: FnOnce(&Self::Output),
pub fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
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Self: UnwindSafe,
pub fn shared(self) -> Shared<Self> where
Self::Output: Clone,
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Self::Output: Clone,
pub fn remote_handle(self) -> (Remote<Self>, RemoteHandle<Self::Output>)
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pub fn boxed<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>> where
Self: Send + 'a,
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self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a + Send, Global>> where
Self: Send + 'a,
pub fn boxed_local<'a>(
self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where
Self: 'a,
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self
) -> Pin<Box<dyn Future<Output = Self::Output> + 'a, Global>> where
Self: 'a,
pub fn unit_error(self) -> UnitError<Self>
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pub fn never_error(self) -> NeverError<Self>
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pub fn poll_unpin(&mut self, cx: &mut Context<'_>) -> Poll<Self::Output> where
Self: Unpin,
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Self: Unpin,
pub fn now_or_never(self) -> Option<Self::Output>
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impl<T> Instrument for T
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pub fn instrument(self, span: Span) -> Instrumented<Self>
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pub fn in_current_span(self) -> Instrumented<Self>
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<F> IntoFuture for F where
F: Future,
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F: Future,
type Output = <F as Future>::Output
into_future
)The output that the future will produce on completion.
type Future = F
into_future
)Which kind of future are we turning this into?
pub fn into_future(self) -> <F as IntoFuture>::Future
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impl<T, Request> ServiceExt<Request> for T where
T: Service<Request> + ?Sized,
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T: Service<Request> + ?Sized,
pub fn ready_and(&mut self) -> ReadyAnd<'_, Self, Request>ⓘ where
Self: Sized,
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Self: Sized,
pub fn ready_oneshot(self) -> ReadyOneshot<Self, Request>ⓘNotable traits for ReadyOneshot<T, Request>
impl<T, Request> Future for ReadyOneshot<T, Request> where
T: Service<Request>, type Output = Result<T, T::Error>;
where
Self: Sized,
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Notable traits for ReadyOneshot<T, Request>
impl<T, Request> Future for ReadyOneshot<T, Request> where
T: Service<Request>, type Output = Result<T, T::Error>;
Self: Sized,
pub fn oneshot(self, req: Request) -> Oneshot<Self, Request>ⓘ where
Self: Sized,
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Self: Sized,
pub fn call_all<S>(self, reqs: S) -> CallAll<Self, S> where
Self: Sized,
Self::Error: Into<BoxError>,
S: Stream<Item = Request>,
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Self: Sized,
Self::Error: Into<BoxError>,
S: Stream<Item = Request>,
pub fn and_then<F>(self, f: F) -> AndThen<Self, F> where
Self: Sized,
F: Clone,
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Self: Sized,
F: Clone,
pub fn map_response<F, Response>(self, f: F) -> MapResponse<Self, F> where
Self: Sized,
F: FnOnce(Self::Response) -> Response + Clone,
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Self: Sized,
F: FnOnce(Self::Response) -> Response + Clone,
pub fn map_err<F, Error>(self, f: F) -> MapErr<Self, F> where
Self: Sized,
F: FnOnce(Self::Error) -> Error + Clone,
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Self: Sized,
F: FnOnce(Self::Error) -> Error + Clone,
pub 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,
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Self: Sized,
Error: From<Self::Error>,
F: FnOnce(Result<Self::Response, Self::Error>) -> Result<Response, Error> + Clone,
pub fn map_request<F, NewRequest>(self, f: F) -> MapRequest<Self, F> where
Self: Sized,
F: FnMut(NewRequest) -> Request + Clone,
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Self: Sized,
F: FnMut(NewRequest) -> Request + Clone,
pub fn filter<F, NewRequest>(self, filter: F) -> Filter<Self, F> where
Self: Sized,
F: Predicate<NewRequest>,
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Self: Sized,
F: Predicate<NewRequest>,
pub fn filter_async<F, NewRequest>(self, filter: F) -> AsyncFilter<Self, F> where
Self: Sized,
F: AsyncPredicate<NewRequest>,
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Self: Sized,
F: AsyncPredicate<NewRequest>,
pub 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>>,
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Self: Sized,
Error: From<Self::Error>,
F: FnOnce(Result<Self::Response, Self::Error>) -> Fut + Clone,
Fut: Future<Output = Result<Response, Error>>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<F, T, E> TryFuture for F where
F: Future<Output = Result<T, E>> + ?Sized,
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F: Future<Output = Result<T, E>> + ?Sized,
type Ok = T
The type of successful values yielded by this future
type Error = E
The type of failures yielded by this future
pub fn try_poll(
self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>
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self: Pin<&mut F>,
cx: &mut Context<'_>
) -> Poll<<F as Future>::Output>
impl<Fut> TryFutureExt for Fut where
Fut: TryFuture + ?Sized,
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Fut: TryFuture + ?Sized,
pub fn flatten_sink<Item>(self) -> FlattenSink<Self, Self::Ok> where
Self::Ok: Sink<Item>,
<Self::Ok as Sink<Item>>::Error == Self::Error,
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Self::Ok: Sink<Item>,
<Self::Ok as Sink<Item>>::Error == Self::Error,
pub fn map_ok<T, F>(self, f: F) -> MapOk<Self, F> where
F: FnOnce(Self::Ok) -> T,
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F: FnOnce(Self::Ok) -> T,
pub fn map_ok_or_else<T, E, F>(self, e: E, f: F) -> MapOkOrElse<Self, F, E> where
F: FnOnce(Self::Ok) -> T,
E: FnOnce(Self::Error) -> T,
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F: FnOnce(Self::Ok) -> T,
E: FnOnce(Self::Error) -> T,
pub fn map_err<E, F>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E,
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F: FnOnce(Self::Error) -> E,
pub fn err_into<E>(self) -> ErrInto<Self, E> where
Self::Error: Into<E>,
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Self::Error: Into<E>,
pub fn ok_into<U>(self) -> OkInto<Self, U> where
Self::Ok: Into<U>,
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Self::Ok: Into<U>,
pub fn and_then<Fut, F>(self, f: F) -> AndThen<Self, Fut, F> where
F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
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F: FnOnce(Self::Ok) -> Fut,
Fut: TryFuture<Error = Self::Error>,
pub fn or_else<Fut, F>(self, f: F) -> OrElse<Self, Fut, F> where
F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
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F: FnOnce(Self::Error) -> Fut,
Fut: TryFuture<Ok = Self::Ok>,
pub fn inspect_ok<F>(self, f: F) -> InspectOk<Self, F> where
F: FnOnce(&Self::Ok),
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F: FnOnce(&Self::Ok),
pub fn inspect_err<F>(self, f: F) -> InspectErr<Self, F> where
F: FnOnce(&Self::Error),
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F: FnOnce(&Self::Error),
pub fn try_flatten(self) -> TryFlatten<Self, Self::Ok> where
Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
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Self::Ok: TryFuture,
<Self::Ok as TryFuture>::Error == Self::Error,
pub fn try_flatten_stream(self) -> TryFlattenStream<Self> where
Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,
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Self::Ok: TryStream,
<Self::Ok as TryStream>::Error == Self::Error,
pub fn unwrap_or_else<F>(self, f: F) -> UnwrapOrElse<Self, F> where
F: FnOnce(Self::Error) -> Self::Ok,
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F: FnOnce(Self::Error) -> Self::Ok,
pub fn into_future(self) -> IntoFuture<Self>
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pub fn try_poll_unpin(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,
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&mut self,
cx: &mut Context<'_>
) -> Poll<Result<Self::Ok, Self::Error>> where
Self: Unpin,
impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,