private object AppPreMonthChartData(string appId, List <string> levels)
{
var app = _memoryCache.Get <App>($"app_{appId}");
if (app == null)
{
app = _appRepository.Get(appId);
}
var startDate = DateTime.Now.AddDays(-30);
var appName = string.IsNullOrEmpty(appId) ? "" : app.Name;
var result = _traceRepository.GroupLevel(levels, appId, startDate, DateTime.Now);
return(new
{
appName,
data = result
});
}