Trait HintSource 

pub trait HintSource {
    type Error;

    // Required method
    fn next_hint(&mut self) -> Result<Option<(TxId, Hint)>, Self::Error>;
}

The host’s callbacks, SSE listener, polls or other hint inputs.

Required Associated Types

type Error

The source’s own error type.

Required Methods

fn next_hint(&mut self) -> Result<Option<(TxId, Hint)>, Self::Error>

Supply the next named observation, or none. The tracker owns no loop.

Dyn Compatibility

This trait is dyn compatible.

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

Implementors