public ValueContainer(
ICalculator <TValue> calculator,
ITriggerSettings triggerSettings,
IHistorySettings historySettings)
: this(calculator, triggerSettings, historySettings, null)
{
}
public ValueContainer(
ICalculator <TValue> calculator,
ITriggerSettings triggerSettings,
IHistorySettings historySettings,
IDetectionRange <TValue> range)
{
Calculator = calculator;
TriggerSettings = triggerSettings;
HistorySettings = historySettings ?? new HistorySettings(0);
Range = range;
SetCalculationDate(DateTimeOffset.Now);
}
/// <summary>
/// Reduce number of entries in <see cref="settings"/> based on <see cref="IHistorySettings"/>.
/// </summary>
/// <typeparam name="TValue"></typeparam>
/// <param name="settings"></param>
/// <param name="values"></param>
/// <param name="anomalies"></param>
/// <param name="referenceDate"></param>
/// <returns></returns>
internal static long ReduceValues <TValue>(
this IHistorySettings settings,
ConcurrentDictionary <DateTimeOffset, TValue> values,
ConcurrentBag <TValue> anomalies,
DateTimeOffset referenceDate)
{
long result = 0;
var oldestValue = values.Keys.OrderBy(x => x).FirstOrDefault();
while (!anomalies.IsEmpty)
{
if (!anomalies.TryTake(out var _))
{
return(result++);
}
}
if (settings.PreserveTimeSpan > TimeSpan.Zero)
{
var preserveDate = referenceDate - settings.PreserveTimeSpan;
while (!CompareUtilities.IsDefault(oldestValue) && oldestValue < preserveDate)
{
values.TryRemove(oldestValue, out _);
oldestValue = values.Keys.OrderBy(x => x).FirstOrDefault();
result++;
}
return(result);
}
while (!CompareUtilities.IsDefault(oldestValue) && values.Keys.Count > settings.PreserveCount)
{
if (!values.TryRemove(oldestValue, out _))
{
return(result);
}
oldestValue = values.Keys.OrderBy(x => x).FirstOrDefault();
result++;
}
return(result);
}
