Trait MountRefreshSource 

pub trait MountRefreshSource: Send + Sync {
    // Required method
    fn sample(&self) -> Result<BackendRefreshSample, String>;

    // Provided method
    fn has_watch_contract(&self) -> bool { ... }
}

Explicit sampling contract for one mounted backend.

Backends with a native watch contract return true from Self::has_watch_contract and are skipped by ExprTreeCalc::refresh. sample is called only by that explicit refresh operation.

Required Methods

fn sample(&self) -> Result<BackendRefreshSample, String>

Samples the backend’s epoch, relevant listings, and entry stamps.

Provided Methods

fn has_watch_contract(&self) -> bool

Whether this backend already reports mutations through a watch contract.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors