/// <summary>
/// Creates a new instance
/// </summary>
public LiveSubscriptionEnumerator(SubscriptionDataConfig dataConfig, IDataQueueHandler dataQueueHandler, EventHandler handler)
{
_requestedSymbol = dataConfig.Symbol;
_underlyingEnumerator = dataQueueHandler.SubscribeWithMapping(dataConfig, handler, out _currentConfig);
// for any mapping event we will re subscribe
dataConfig.NewSymbol += (_, _) =>
{
dataQueueHandler.Unsubscribe(_currentConfig);
_previousEnumerator = _underlyingEnumerator;
var oldSymbol = _currentConfig.Symbol;
_underlyingEnumerator = dataQueueHandler.SubscribeWithMapping(dataConfig, handler, out _currentConfig);
Log.Trace($"LiveSubscriptionEnumerator({_requestedSymbol}): " +
$"resubscribing old: '{oldSymbol.Value}' new '{_currentConfig.Symbol.Value}'");
};
}
