internal FetchData FetchData(FetchRequest request)
{
Archive archive = FindMatchingArchive(request);
FetchData fetchData = archive.FetchData(request);
Util.Debug(request.RrdToolCommand);
return(fetchData);
}
internal FetchData FetchData(FetchRequest request)
{
long arcStep = ArcStep;
long fetchStart = Util.Normalize(request.FetchStart, arcStep);
long fetchEnd = Util.Normalize(request.FetchEnd, arcStep);
if (fetchEnd < request.FetchEnd)
{
fetchEnd += arcStep;
}
long startTime = StartTime;
long endTime = EndTime;
string[] dsToFetch = request.Filter;
if (dsToFetch == null)
{
dsToFetch = parentDb.DsNames;
}
int dsCount = dsToFetch.Length;
int ptsCount = (int)((fetchEnd - fetchStart) / arcStep + 1);
long[] timestamps = new long[ptsCount];
double[][] values = new double[dsCount][];
for (int i = 0; i < dsCount; i++)
{
values[i] = new double[ptsCount];
}
long matchStartTime = Math.Max(fetchStart, startTime);
long matchEndTime = Math.Min(fetchEnd, endTime);
double [][] robinValues = null;
if (matchStartTime <= matchEndTime)
{
// preload robin values
int matchCount = (int)((matchEndTime - matchStartTime) / arcStep + 1);
int matchStartIndex = (int)((matchStartTime - startTime) / arcStep);
robinValues = new double[dsCount][];
for (int i = 0; i < dsCount; i++)
{
int dsIndex = parentDb.GetDsIndex(dsToFetch[i]);
robinValues[i] = robins[dsIndex].GetValues(matchStartIndex, matchCount);
}
}
for (int ptIndex = 0; ptIndex < ptsCount; ptIndex++)
{
long time = fetchStart + ptIndex * arcStep;
timestamps[ptIndex] = time;
for (int i = 0; i < dsCount; i++)
{
double val = Double.NaN;
if (time >= matchStartTime && time <= matchEndTime)
{
// inbound time
int robinValueIndex = (int)((time - matchStartTime) / arcStep);
val = robinValues[i][robinValueIndex];
}
values[i][ptIndex] = val;
}
}
FetchData fetchData = new FetchData(this, request);
fetchData.Timestamps = timestamps;
fetchData.Values = values;
return(fetchData);
}