Trait ProbeCacheStore 

pub trait ProbeCacheStore: Send + Sync {
    // Required methods
    fn load(&self) -> ProbeCacheSnapshot;
    fn save(&self, snapshot: &ProbeCacheSnapshot) -> Result<(), ProbeCacheError>;
}

Where an Enumerator’s probe cache lives between runs.

A port, like HidBackend: the enumerator knows what is worth keeping and when it changed, and nothing about where it goes. openlogi-hid supplies the file-backed one native builds use.

Required Methods

fn load(&self) -> ProbeCacheSnapshot

The last snapshot saved here, or an empty one.

Never fails: an absent, torn or foreign-schema store is a cold start, which the enumerator handles by re-probing — not an error worth propagating into device discovery.

fn save(&self, snapshot: &ProbeCacheSnapshot) -> Result<(), ProbeCacheError>

Persist snapshot.

An Err is logged by the caller and the snapshot retried on the next tick that dirties the cache, so a store may fail freely.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors