internal void AddValue(string fieldName, double value, DateTime timestamp)
{
if (StatisticsLogger.IsValidField(fieldName))
{
// add value for StatisticsLogger use
statValues.Add(new StatValue(value, timestamp));
}
// "value" is the occurring event in this very moment,
// so "Current" is holding previous value right now
if (Current.Value != value)
{
if (value == 0 && lastEvent.Value > 0)
{
lastOn = lastEvent;
lastOff = new StatValue(value, timestamp);
}
else if (value > 0 && lastEvent.Value == 0)
{
lastOff = lastEvent;
lastOn = new StatValue(value, timestamp);
}
lastEvent = new StatValue(Current.Value, Current.Timestamp);
}
// insert current value into history and so update "Current" to "value"
historyValues.Insert(0, new StatValue(value, timestamp));
// keeep size within historyLimit
while (historyValues.Count > historyLimit)
{
historyValues.RemoveAt(historyValues.Count - 1);
}
}
public ValueStatistics()
{
LastProcessedTimestap = DateTime.UtcNow;
statValues = new List <StatValue>();
statValues.Add(new StatValue(0, LastProcessedTimestap));
lastEvent = lastOn = lastOff = new StatValue(0, LastProcessedTimestap);
historyValues.Add(lastEvent);
while (historyValues.Count > historyLimit)
{
historyValues.RemoveAt(historyValues.Count - 1);
}
}
