Struct Subscription 

#[non_exhaustive]
pub struct Subscription {
    pub id: SubscriptionId,
    pub symbol: String,
    pub timeframe: Timeframe,
    pub clock: BarClock,
    pub extended_hours: bool,
    pub conversion: Option<String>,
    pub sink: Sink,
}

A live subscription: push its updates into sink until Datafeed::unsubscribe gets id.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

id: SubscriptionId

Identifier passed back to the feed when unsubscribing.

symbol: String

Instrument identifier used by the host.

timeframe: Timeframe

Bar interval requested from the feed.

clock: BarClock

The same calendar boundaries supplied to history requests.

extended_hours: bool

Include the instrument’s extended trading hours, as well as regular hours.

conversion: Option<String>

The currency or unit the host chose, in which the updates are wanted; see HistoryRequest::conversion.

sink: Sink

Destination for updates; stop publishing when it becomes inactive.