Struct tower::util::BoxService

pub struct BoxService<T, U, E> { /* private fields */ }

A boxed Service + Send trait object.

BoxService turns a service into a trait object, allowing the response future type to be dynamic. This type requires both the service and the response future to be Send.

If you need a boxed Service that implements Clone consider using BoxCloneService.

See module level documentation for more details.

Implementations

impl<T, U, E> BoxService<T, U, E>

pub fn new<S>(inner: S) -> Self

where S: Service<T, Response = U, Error = E> + Send + 'static, S::Future: Send + 'static,

pub fn layer<S>() -> LayerFn<fn(_: S) -> Self>

where S: Service<T, Response = U, Error = E> + Send + 'static, S::Future: Send + 'static,

Returns a Layer for wrapping a Service in a BoxService middleware.

Trait Implementations

impl<T, U, E> Debug for BoxService<T, U, E>

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T, U, E> Service<T> for BoxService<T, U, E>

type Response = U

Responses given by the service.

type Error = E

Errors produced by the service.

type Future = Pin<Box<dyn Future<Output = Result<U, E>> + Send>>

The future response value.

fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), E>>

Returns Poll::Ready(Ok(())) when the service is able to process requests.

fn call( &mut self, request: T, ) -> Pin<Box<dyn Future<Output = Result<U, E>> + Send>>

Process the request and return the response asynchronously.