[−][src]Enum tower::util::Either
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
A(A)
B(B)
Trait Implementations
impl<A, B> Clone for Either<A, B> where
A: Clone,
B: Clone,
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A: Clone,
B: Clone,
fn clone(&self) -> Either<A, B>
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fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl<A, B, Request> Service<Request> for Either<A, B> where
A: Service<Request>,
B: Service<Request, Response = <A as Service<Request>>::Response>,
<A as Service<Request>>::Error: Into<Box<dyn Error + 'static + Send + Sync>>,
<B as Service<Request>>::Error: Into<Box<dyn Error + 'static + Send + Sync>>,
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A: Service<Request>,
B: Service<Request, Response = <A as Service<Request>>::Response>,
<A as Service<Request>>::Error: Into<Box<dyn Error + 'static + Send + Sync>>,
<B as Service<Request>>::Error: Into<Box<dyn Error + 'static + Send + Sync>>,
type Response = <A as Service<Request>>::Response
Responses given by the service.
type Error = Box<dyn Error + 'static + Send + Sync>
Errors produced by the service.
type Future = Either<<A as Service<Request>>::Future, <B as Service<Request>>::Future>
The future response value.
fn poll_ready(
&mut self
) -> Result<Async<()>, <Either<A, B> as Service<Request>>::Error>
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&mut self
) -> Result<Async<()>, <Either<A, B> as Service<Request>>::Error>
fn call(
&mut self,
request: Request
) -> <Either<A, B> as Service<Request>>::Future
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&mut self,
request: Request
) -> <Either<A, B> as Service<Request>>::Future
impl<A, B> Debug for Either<A, B> where
A: Debug,
B: Debug,
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A: Debug,
B: Debug,
impl<A, B> Future for Either<A, B> where
A: Future,
B: Future<Item = <A as Future>::Item>,
<A as Future>::Error: Into<Box<dyn Error + 'static + Send + Sync>>,
<B as Future>::Error: Into<Box<dyn Error + 'static + Send + Sync>>,
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A: Future,
B: Future<Item = <A as Future>::Item>,
<A as Future>::Error: Into<Box<dyn Error + 'static + Send + Sync>>,
<B as Future>::Error: Into<Box<dyn Error + 'static + Send + Sync>>,
type Item = <A as Future>::Item
The type of value that this future will resolved with if it is successful. Read more
type Error = Box<dyn Error + 'static + Send + Sync>
The type of error that this future will resolve with if it fails in a normal fashion. Read more
fn poll(
&mut self
) -> Result<Async<<Either<A, B> as Future>::Item>, <Either<A, B> as Future>::Error>
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&mut self
) -> Result<Async<<Either<A, B> as Future>::Item>, <Either<A, B> as Future>::Error>
fn wait(self) -> Result<Self::Item, Self::Error>
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Block the current thread until this future is resolved. Read more
fn map<F, U>(self, f: F) -> Map<Self, F> where
F: FnOnce(Self::Item) -> U,
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F: FnOnce(Self::Item) -> U,
Map this future's result to a different type, returning a new future of the resulting type. Read more
fn map_err<F, E>(self, f: F) -> MapErr<Self, F> where
F: FnOnce(Self::Error) -> E,
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F: FnOnce(Self::Error) -> E,
Map this future's error to a different error, returning a new future. Read more
fn from_err<E>(self) -> FromErr<Self, E> where
E: From<Self::Error>,
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E: From<Self::Error>,
Map this future's error to any error implementing From
for this future's Error
, returning a new future. Read more
fn then<F, B>(self, f: F) -> Then<Self, B, F> where
B: IntoFuture,
F: FnOnce(Result<Self::Item, Self::Error>) -> B,
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B: IntoFuture,
F: FnOnce(Result<Self::Item, Self::Error>) -> B,
Chain on a computation for when a future finished, passing the result of the future to the provided closure f
. Read more
fn and_then<F, B>(self, f: F) -> AndThen<Self, B, F> where
B: IntoFuture<Error = Self::Error>,
F: FnOnce(Self::Item) -> B,
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B: IntoFuture<Error = Self::Error>,
F: FnOnce(Self::Item) -> B,
Execute another future after this one has resolved successfully. Read more
fn or_else<F, B>(self, f: F) -> OrElse<Self, B, F> where
B: IntoFuture<Item = Self::Item>,
F: FnOnce(Self::Error) -> B,
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B: IntoFuture<Item = Self::Item>,
F: FnOnce(Self::Error) -> B,
Execute another future if this one resolves with an error. Read more
fn select<B>(self, other: B) -> Select<Self, <B as IntoFuture>::Future> where
B: IntoFuture<Item = Self::Item, Error = Self::Error>,
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B: IntoFuture<Item = Self::Item, Error = Self::Error>,
Waits for either one of two futures to complete. Read more
fn select2<B>(self, other: B) -> Select2<Self, <B as IntoFuture>::Future> where
B: IntoFuture,
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B: IntoFuture,
Waits for either one of two differently-typed futures to complete. Read more
fn join<B>(self, other: B) -> Join<Self, <B as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
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B: IntoFuture<Error = Self::Error>,
Joins the result of two futures, waiting for them both to complete. Read more
fn join3<B, C>(
self,
b: B,
c: C
) -> Join3<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
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self,
b: B,
c: C
) -> Join3<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
Same as join
, but with more futures.
fn join4<B, C, D>(
self,
b: B,
c: C,
d: D
) -> Join4<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
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self,
b: B,
c: C,
d: D
) -> Join4<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
Same as join
, but with more futures.
fn join5<B, C, D, E>(
self,
b: B,
c: C,
d: D,
e: E
) -> Join5<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future, <E as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
E: IntoFuture<Error = Self::Error>,
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self,
b: B,
c: C,
d: D,
e: E
) -> Join5<Self, <B as IntoFuture>::Future, <C as IntoFuture>::Future, <D as IntoFuture>::Future, <E as IntoFuture>::Future> where
B: IntoFuture<Error = Self::Error>,
C: IntoFuture<Error = Self::Error>,
D: IntoFuture<Error = Self::Error>,
E: IntoFuture<Error = Self::Error>,
Same as join
, but with more futures.
fn into_stream(self) -> IntoStream<Self>
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Convert this future into a single element stream. Read more
fn flatten(self) -> Flatten<Self> where
Self::Item: IntoFuture,
<Self::Item as IntoFuture>::Error: From<Self::Error>,
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Self::Item: IntoFuture,
<Self::Item as IntoFuture>::Error: From<Self::Error>,
Flatten the execution of this future when the successful result of this future is itself another future. Read more
fn flatten_stream(self) -> FlattenStream<Self> where
Self::Item: Stream,
<Self::Item as Stream>::Error == Self::Error,
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Self::Item: Stream,
<Self::Item as Stream>::Error == Self::Error,
Flatten the execution of this future when the successful result of this future is a stream. Read more
fn fuse(self) -> Fuse<Self>
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Fuse a future such that poll
will never again be called once it has completed. Read more
fn inspect<F>(self, f: F) -> Inspect<Self, F> where
F: FnOnce(&Self::Item),
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F: FnOnce(&Self::Item),
Do something with the item of a future, passing it on. Read more
fn catch_unwind(self) -> CatchUnwind<Self> where
Self: UnwindSafe,
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Self: UnwindSafe,
Catches unwinding panics while polling the future. Read more
fn shared(self) -> Shared<Self>
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Create a cloneable handle to this future where all handles will resolve to the same result. Read more
Auto Trait Implementations
impl<A, B> Send for Either<A, B> where
A: Send,
B: Send,
A: Send,
B: Send,
impl<A, B> Sync for Either<A, B> where
A: Sync,
B: Sync,
A: Sync,
B: Sync,
Blanket Implementations
impl<T, Request> ServiceExt for T where
T: Service<Request> + ?Sized,
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T: Service<Request> + ?Sized,
fn ready(self) -> Ready<Self, Request> where
Self: Sized,
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Self: Sized,
A future yielding the service when it is ready to accept a request.
fn oneshot(self, req: Request) -> Oneshot<Self, Request> where
Self: Sized,
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Self: Sized,
Consume this Service
, calling with the providing request once it is ready.
fn call_all<S>(self, reqs: S) -> CallAll<Self, S> where
Self: Sized,
Self::Error: Into<Box<dyn Error + Send + Sync>>,
S: Stream<Item = Request>,
S::Error: Into<Box<dyn Error + Send + Sync>>,
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Self: Sized,
Self::Error: Into<Box<dyn Error + Send + Sync>>,
S: Stream<Item = Request>,
S::Error: Into<Box<dyn Error + Send + Sync>>,
Process all requests from the given Stream
, and produce a Stream
of their responses. Read more
impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> From for T
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impl<T, U> TryFrom 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.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> TryInto 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.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<F> IntoFuture for F where
F: Future,
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F: Future,
type Future = F
The future that this type can be converted into.
type Item = <F as Future>::Item
The item that the future may resolve with.
type Error = <F as Future>::Error
The error that the future may resolve with.
fn into_future(self) -> F
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impl<C, Target> MakeConnection for C where
C: Service<Target>,
<C as Service<Target>>::Response: AsyncRead,
<C as Service<Target>>::Response: AsyncWrite,
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C: Service<Target>,
<C as Service<Target>>::Response: AsyncRead,
<C as Service<Target>>::Response: AsyncWrite,
type Connection = <C as Service<Target>>::Response
The transport provided by this service
type Error = <C as Service<Target>>::Error
Errors produced by the connecting service
type Future = <C as Service<Target>>::Future
The future that eventually produces the transport
fn poll_ready(
&mut self
) -> Result<Async<()>, <C as MakeConnection<Target>>::Error>
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&mut self
) -> Result<Async<()>, <C as MakeConnection<Target>>::Error>
fn make_connection(
&mut self,
target: Target
) -> <C as MakeConnection<Target>>::Future
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&mut self,
target: Target
) -> <C as MakeConnection<Target>>::Future
impl<M, S, Target, Request> MakeService for M where
M: Service<Target, Response = S>,
S: Service<Request>,
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M: Service<Target, Response = S>,
S: Service<Request>,
type Response = <S as Service<Request>>::Response
Responses given by the service
type Error = <S as Service<Request>>::Error
Errors produced by the service
type Service = S
The Service
value created by this factory
type MakeError = <M as Service<Target>>::Error
Errors produced while building a service.
type Future = <M as Service<Target>>::Future
The future of the Service
instance.
fn poll_ready(
&mut self
) -> Result<Async<()>, <M as MakeService<Target, Request>>::MakeError>
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&mut self
) -> Result<Async<()>, <M as MakeService<Target, Request>>::MakeError>
fn make_service(
&mut self,
target: Target
) -> <M as MakeService<Target, Request>>::Future
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&mut self,
target: Target
) -> <M as MakeService<Target, Request>>::Future