Struct tower::util::BoxService

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

This is supported on crate feature util only.

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.

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> where
    T: Debug,
    U: Debug,
    E: Debug, 

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.