Struct tower::util::Optional [−][src]
Optionally forwards requests to an inner service.
If the inner service is None, Error::None is returned as the response.
Implementations
impl<T> Optional<T>[src]
pub fn new<Request>(inner: Option<T>) -> Optional<T> where
T: Service<Request>,
<T as Service<Request>>::Error: Into<Box<dyn Error + 'static + Send + Sync, Global>>, [src]
T: Service<Request>,
<T as Service<Request>>::Error: Into<Box<dyn Error + 'static + Send + Sync, Global>>,
Create a new OptionService
Trait Implementations
impl<T> Debug for Optional<T> where
T: Debug, [src]
T: Debug,
impl<T, Request> Service<Request> for Optional<T> where
T: Service<Request>,
<T as Service<Request>>::Error: Into<Box<dyn Error + 'static + Send + Sync, Global>>, [src]
T: Service<Request>,
<T as Service<Request>>::Error: Into<Box<dyn Error + 'static + Send + Sync, Global>>,
type Response = <T as Service<Request>>::Response
Responses given by the service.
type Error = Box<dyn Error + 'static + Send + Sync, Global>
Errors produced by the service.
type Future = ResponseFuture<<T as Service<Request>>::Future>
The future response value.
pub fn poll_ready(
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), <Optional<T> as Service<Request>>::Error>>[src]
&mut self,
cx: &mut Context<'_>
) -> Poll<Result<(), <Optional<T> as Service<Request>>::Error>>
pub fn call(
&mut self,
request: Request
) -> <Optional<T> as Service<Request>>::Future[src]
&mut self,
request: Request
) -> <Optional<T> as Service<Request>>::Future
Auto Trait Implementations
impl<T> RefUnwindSafe for Optional<T> where
T: RefUnwindSafe,
T: RefUnwindSafe,
impl<T> Send for Optional<T> where
T: Send,
T: Send,
impl<T> Sync for Optional<T> where
T: Sync,
T: Sync,
impl<T> Unpin for Optional<T> where
T: Unpin,
T: Unpin,
impl<T> UnwindSafe for Optional<T> where
T: UnwindSafe,
T: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T[src]
impl<T> From<T> for T[src]
impl<T> Instrument for T[src]
pub fn instrument(self, span: Span) -> Instrumented<Self>[src]
pub fn in_current_span(self) -> Instrumented<Self>[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<T, Request> ServiceExt<Request> for T where
T: Service<Request> + ?Sized, [src]
T: Service<Request> + ?Sized,
pub fn ready(&mut self) -> Ready<'_, Self, Request>ⓘ[src]
pub fn ready_and(&mut self) -> ReadyAnd<'_, Self, Request>[src]
pub fn ready_oneshot(self) -> ReadyOneshot<Self, Request>[src]
pub fn oneshot(self, req: Request) -> Oneshot<Self, Request>ⓘ[src]
pub fn call_all<S>(self, reqs: S) -> CallAll<Self, S> where
S: Stream<Item = Request>,
Self::Error: Into<Box<dyn Error + 'static + Send + Sync, Global>>, [src]
S: Stream<Item = Request>,
Self::Error: Into<Box<dyn Error + 'static + Send + Sync, Global>>,
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
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>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,