internal override void requestData(DataProcessor dproc) {
if (backend == null) {
dproc.AddDatasource(name, rrdPath, dsName, consolFun);
}
else {
dproc.AddDatasource(name, rrdPath, dsName, consolFun, backend);
}
}
public void TestDataProcessor()
{
DateTime start = new DateTime(2012, 08, 22);
RrdDef def = new RrdDef(SAMPLE, start.GetTimestamp(), 60);
def.AddDatasource("speed",DataSourceType.COUNTER,120,double.NaN,double.NaN); // Step : every minute
def.AddArchive(ConsolidationFunction.AVERAGE, 0, 5, 12 * 24 * 30); // Archive average every 5 minutes during 30 days
def.AddArchive(ConsolidationFunction.AVERAGE, 0, 5 * 12, 24 * 30); // Archive average every hour during 30 days
start = start.AddSeconds(40);
using (RrdDb db = RrdDb.Create(def))
{
Sample sample = db.CreateSample();
for (int i = 1; i < 60 * 24 * 3; i++) // add 3 days of samples
{
sample.Set(start.AddMinutes(i), 100 * i);
sample.Update();
}
}
DataProcessor dataProcessor = new DataProcessor(start.AddHours(3), start.AddHours(13));
dataProcessor.FetchRequestResolution = 3600;
dataProcessor.AddDatasource("speed", SAMPLE, "speed", ConsolidationFunction.AVERAGE);
dataProcessor.AddDatasource("speedByHour", "speed, STEP, *");
dataProcessor.ProcessData();
double[] vals = dataProcessor.GetValues("speedByHour");
Assert.AreEqual(12, vals.Length);
for (int i = 0; i < vals.Length; i++)
{
Assert.AreEqual(6000,((int)vals[i]));
}
}
internal override void requestData(DataProcessor dproc)
{
dproc.AddDatasource(name, defName, consolFun);
}
internal override void requestData(DataProcessor dproc) {
dproc.AddDatasource(name, plottable);
}
private DataProcessor CreateDataProcessor(String rpnExpression)
{
var dataProcessor = new DataProcessor(request.FetchStart, request.FetchEnd);
foreach (String dsName in dsNames)
{
dataProcessor.AddDatasource(dsName, this);
}
if (rpnExpression != null)
{
dataProcessor.AddDatasource(RPN_SOURCE_NAME, rpnExpression);
try
{
dataProcessor.ProcessData();
}
catch (IOException ioe)
{
// highly unlikely, since all datasources have already calculated values
throw new InvalidOperationException("Impossible error: " + ioe);
}
}
return dataProcessor;
}
