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use super::{AsyncFilter, Filter}; use tower_layer::Layer; /// Conditionally dispatch requests to the inner service based on a synchronous /// [predicate]. /// /// This [`Layer`] produces instances of the [`Filter`] service. /// /// [predicate]: crate::filter::Predicate /// [`Layer`]: crate::Layer /// [`Filter`]: crate::filter::Filter #[derive(Debug, Clone)] pub struct FilterLayer<U> { predicate: U, } /// Conditionally dispatch requests to the inner service based on an asynchronous /// [predicate]. /// /// This [`Layer`] produces instances of the [`AsyncFilter`] service. /// /// [predicate]: crate::filter::AsyncPredicate /// [`Layer`]: crate::Layer /// [`Filter`]: crate::filter::AsyncFilter #[derive(Debug)] pub struct AsyncFilterLayer<U> { predicate: U, } // === impl FilterLayer === impl<U> FilterLayer<U> { /// Returns a new layer that produces [`Filter`] services with the given /// [`Predicate`]. /// /// [`Predicate`]: crate::filter::Predicate /// [`Filter`]: crate::filter::Filter pub fn new(predicate: U) -> Self { Self { predicate } } } impl<U: Clone, S> Layer<S> for FilterLayer<U> { type Service = Filter<S, U>; fn layer(&self, service: S) -> Self::Service { let predicate = self.predicate.clone(); Filter::new(service, predicate) } } // === impl AsyncFilterLayer === impl<U> AsyncFilterLayer<U> { /// Returns a new layer that produces [`AsyncFilter`] services with the given /// [`AsyncPredicate`]. /// /// [`AsyncPredicate`]: crate::filter::AsyncPredicate /// [`Filter`]: crate::filter::Filter pub fn new(predicate: U) -> Self { Self { predicate } } } impl<U: Clone, S> Layer<S> for AsyncFilterLayer<U> { type Service = AsyncFilter<S, U>; fn layer(&self, service: S) -> Self::Service { let predicate = self.predicate.clone(); AsyncFilter::new(service, predicate) } }