internal void Process(long newTime, double newValue)
{
Header header = parentDb.Header;
long step = header.Step;
long oldTime = header.LastUpdateTime;
long startTime = Util.Normalize(oldTime, step);
long endTime = startTime + step;
double oldValue = lastValue.Get();
double updateValue = CalculateUpdateValue(oldTime, oldValue, newTime, newValue);
if (newTime < endTime)
{
Accumulate(oldTime, newTime, updateValue);
}
else
{
// should store something
long boundaryTime = Util.Normalize(newTime, step);
Accumulate(oldTime, boundaryTime, updateValue);
double value = CalculateTotal(startTime, boundaryTime);
// how many updates?
long numSteps = (boundaryTime - endTime) / step + 1L;
// ACTION!
parentDb.Archive(this, value, numSteps);
// cleanup
nanSeconds.Set(0);
accumValue.Set(0.0);
Accumulate(boundaryTime, newTime, updateValue);
}
}
private double CalculateUpdateValue(long oldTime, double oldValue, long newTime, double newValue)
{
double updateValue = Double.NaN;
if (newTime - oldTime <= heartbeat.Get())
{
string type = dsType.Get();
if (type.Equals("GAUGE"))
{
updateValue = newValue;
}
else if (type.Equals("ABSOLUTE"))
{
if (!Double.IsNaN(newValue))
{
updateValue = newValue / (newTime - oldTime);
}
}
else if (type.Equals("DERIVE"))
{
if (!Double.IsNaN(newValue) && !Double.IsNaN(oldValue))
{
updateValue = (newValue - oldValue) / (newTime - oldTime);
}
}
else if (type.Equals("COUNTER"))
{
if (!Double.IsNaN(newValue) && !Double.IsNaN(oldValue))
{
double diff = newValue - oldValue;
double max32bit = Math.Pow(2, 32);
double max64bit = Math.Pow(2, 64);
if (diff < 0)
{
diff += max32bit;
}
if (diff < 0)
{
diff += max64bit - max32bit;
}
if (diff >= 0)
{
updateValue = diff / (newTime - oldTime);
}
}
}
if (!Double.IsNaN(updateValue))
{
double minVal = minValue.Get();
double maxVal = maxValue.Get();
if (!Double.IsNaN(minVal) && updateValue < minVal)
{
updateValue = Double.NaN;
}
if (!Double.IsNaN(maxVal) && updateValue > maxVal)
{
updateValue = Double.NaN;
}
}
}
lastValue.Set(newValue);
return(updateValue);
}