public virtual async Task <ExchangeRateStatisticInfo> GetExchangeRates(DateTime startDate, DateTime endDate, string code)
{
var cachedResult = this.rateCache.GetExchange(code, startDate, endDate);
if (cachedResult != null)
{
return(cachedResult);
}
(double?median, double?min, double?max) = this.GetExchangeRatesFromDB(startDate, endDate, code);
// усилить проверку - данных может не быть только на части интервала
if (!median.HasValue)
{
if (startDate.Year != endDate.Year)
{
await this.integrationJob.FillCurrentRate(startDate);
}
await this.integrationJob.FillCurrentRate(endDate);
(median, min, max) = this.GetExchangeRatesFromDB(startDate, endDate, code);
}
cachedResult = new ExchangeRateStatisticInfo
{
Code = code,
MaxRate = max ?? 0,
MedianRate = median ?? 0,
MinRate = min ?? 0
};
this.rateCache.AddExchange(cachedResult, startDate, endDate);
return(cachedResult);
}
public virtual void AddExchange(ExchangeRateStatisticInfo info, DateTime startDate, DateTime endDate)
{
string key = GetKey(info.Code, startDate, endDate);
this.cache.AddOrUpdate(key, info, (k, prevValue) => info);
}
