SnapshotFetcher

barter_data

Trait SnapshotFetcher 

Source 
pub trait SnapshotFetcher<Exchange, Kind> {
    // Required method
    fn fetch_snapshots<Instrument>(
        subscriptions: &[Subscription<Exchange, Instrument, Kind>],
    ) -> impl Future<Output = Result<Vec<MarketEvent<Instrument::Key, Kind::Event>>, SocketError>> + Send
       where Exchange: Connector,
             Instrument: InstrumentData,
             Kind: SubscriptionKind,
             Kind::Event: Send,
             Subscription<Exchange, Instrument, Kind>: Identifier<Exchange::Market>;
}
Expand description

Defines how to fetch market data snapshots for a collection of Subscriptions.

Useful when a MarketStream requires an initial snapshot on start-up.

See examples such as Binance OrderBooksL2:

Required Methods§

Source

fn fetch_snapshots<Instrument>( subscriptions: &[Subscription<Exchange, Instrument, Kind>], ) -> impl Future<Output = Result<Vec<MarketEvent<Instrument::Key, Kind::Event>>, SocketError>> + Send
where Exchange: Connector, Instrument: InstrumentData, Kind: SubscriptionKind, Kind::Event: Send, Subscription<Exchange, Instrument, Kind>: Identifier<Exchange::Market>,

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§