private async Task ExecuteSelector(
string strategyName,
SelectorParams selectorParams,
ISelector selector,
dynamic config
)
{
List <string> symbols = await selector.GetSymbols(config);
if (selectorParams.count < 0)
{
symbols = symbols.TakeLast(selectorParams.count).ToList();
}
else
{
symbols = symbols.Take(selectorParams.count).ToList();
}
Dictionary <string, dynamic> outputs = new Dictionary <string, dynamic>()
{
{ "symbols", symbols }
};
// TODO: cache outputs in parser and get from cache instead of DB
await _database.SaveOutput(strategyName, "selector", outputs);
}