Trait common::prelude::DataFeed

pub trait DataFeed<Symbol, Rate, ResolveTime> {
    // Required methods
    fn quote(symbol: &Symbol) -> Result<Option<Rate>, DispatchError>;
    fn list_enabled_symbols(
        
    ) -> Result<Vec<(Symbol, ResolveTime)>, DispatchError>;
    fn quote_unchecked(symbol: &Symbol) -> Option<Rate>;
}

DataFeed trait indicates that particular object could be used for querying oracle data.

Required Methods

fn quote(symbol: &Symbol) -> Result<Option<Rate>, DispatchError>

Get rate for the specified symbol

• symbol: which symbol to query

fn list_enabled_symbols() -> Result<Vec<(Symbol, ResolveTime)>, DispatchError>

Get all supported symbols and their last update time

fn quote_unchecked(symbol: &Symbol) -> Option<Rate>

Get rate for the specified symbol without any checks

• symbol: which symbol to query

Implementations on Foreign Types

impl<Symbol, Rate, ResolveTime> DataFeed<Symbol, Rate, ResolveTime> for ()

fn quote(_symbol: &Symbol) -> Result<Option<Rate>, DispatchError>

fn list_enabled_symbols() -> Result<Vec<(Symbol, ResolveTime)>, DispatchError>

fn quote_unchecked(_symbol: &Symbol) -> Option<Rate>

Implementors