pub trait CompetitionFillSink: Send + Sync {
// Required method
fn record_fill<'life0, 'life1, 'async_trait>(
&'life0 self,
fill: &'life1 Fill,
) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait;
}Expand description
Minimal sink the recorder depends on: persist one competition fill.
Implemented by CompetitionService; abstracted so the recorder’s only
dependency is “record a fill”, which keeps it decoupled and unit-testable.