Trait Resolver 

pub trait Resolver:
    Clone
    + Send
    + 'static {
    type Key: Span;

    // Required methods
    fn fetch(&mut self, key: Self::Key) -> impl Future<Output = ()> + Send;
    fn cancel(&mut self, key: Self::Key) -> impl Future<Output = ()> + Send;
    fn clear(&mut self) -> impl Future<Output = ()> + Send;
    fn retain(
        &mut self,
        predicate: impl Fn(&Self::Key) -> bool + Send + 'static,
    ) -> impl Future<Output = ()> + Send;
}

Responsible for fetching data and notifying a Consumer.

Required Associated Types

type Key: Span

Type used to uniquely identify data.

Required Methods

fn fetch(&mut self, key: Self::Key) -> impl Future<Output = ()> + Send

Initiate a fetch request.

fn cancel(&mut self, key: Self::Key) -> impl Future<Output = ()> + Send

Cancel a fetch request.

fn clear(&mut self) -> impl Future<Output = ()> + Send

Cancel all fetch requests.

fn retain( &mut self, predicate: impl Fn(&Self::Key) -> bool + Send + 'static, ) -> impl Future<Output = ()> + Send

Retain only the fetch requests that satisfy the predicate.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<K: Span> Resolver for Mailbox<K>

type Key = K