public void RrdDefCreation()
{
RrdDef def = new RrdDef("test");
Assert.AreEqual("test", def.Path);
Assert.AreEqual(0, def.DataSourceDefinitions.Length);
Assert.AreEqual(0, def.ArchiveDefinitions.Length);
def.AddDatasource("test", DataSourceType.GAUGE, 10, 0, 100);
def.AddDatasource("test2", DataSourceType.DERIVE, 10, 0, 100);
Assert.AreEqual(2, def.DataSourceDefinitions.Length);
Assert.AreEqual("test",def.DataSourceDefinitions[0].Name);
Assert.AreEqual(DataSourceType.GAUGE, def.DataSourceDefinitions[0].Type);
Assert.AreEqual(10, def.DataSourceDefinitions[0].Heartbeat);
Assert.AreEqual(0, def.DataSourceDefinitions[0].MinValue);
Assert.AreEqual(100, def.DataSourceDefinitions[0].MaxValue);
def.AddArchive(ConsolidationFunction.MIN,0.5,2,3);
Assert.AreEqual(1, def.ArchiveDefinitions.Length);
Assert.AreEqual(0.5,def.ArchiveDefinitions[0].Xff);
Assert.AreEqual(2, def.ArchiveDefinitions[0].Steps);
Assert.AreEqual(3, def.ArchiveDefinitions[0].Rows);
def.RemoveDatasource("test");
Assert.AreEqual(1, def.DataSourceDefinitions.Length);
Assert.AreEqual("test2", def.DataSourceDefinitions[0].Name);
def.RemoveAllDatasources();
Assert.AreEqual(0, def.DataSourceDefinitions.Length);
Assert.AreEqual(1, def.ArchiveDefinitions.Length);
def.RemoveArchive(ConsolidationFunction.MIN,2);
Assert.AreEqual(0, def.ArchiveDefinitions.Length);
}
/// <summary>
/// This method saves:
/// 1. a .rrd file
/// 2. a RRD .xml file
/// 3. a PNG (proof of concept - just to demonstrate value of interop)
/// </summary>
/// <param name="filename"></param>
/// <param name="traceInterval"></param>
/// <param name="dates"></param>
/// <param name="pings"></param>
/// <param name="hostOrIp"></param>
/// <param name="networkInterfaceText"></param>
/// <param name="userNotes"></param>
public static void save(string filename, double traceInterval, List<DateTime> dates , BindingList<long> pings,
string hostOrIp, string routeToDestination, string networkInterfaceText, string userNotes)
{
// Delete pre-existing file to avoid Rrd error
if (File.Exists(filename))
{
File.Delete(filename);
}
RrdDef def = new RrdDef(filename);
def.Step = (long)traceInterval;
def.StartTime = dates[0].GetTimestamp();
def.AddDatasource(DsDef.FromRrdToolString("DS:input:GAUGE:600:0:U"));
int rows = pings.Count-1;
def.AddArchive(ArcDef.FromRrdToolString("RRA:AVERAGE:0.5:1:"+rows));
using (RrdDb db = RrdDb.Create(def))
{
Sample sample = db.CreateSample();
for (int i = 1; i < pings.Count; i++) // skip first
{
sample.Set(dates[i], pings[i]);
sample.Update();
}
// Save the XML version
String filenameXML = filename + ".xml";
if (File.Exists(filenameXML))
{
File.Delete(filenameXML);
}
db.ToXml(filenameXML);
/* There doesn't seem to be a way to add comments to rrd file.
* Maybe the best we can do is to insert them in the XML file
* as an XML comment? */
}
saveAsPng(filename, dates, hostOrIp, routeToDestination, networkInterfaceText, userNotes);
}
/// <summary>
/// Returns RrdDef object constructed from the underlying XML template. Before this method
/// is called, values for all non-optional placeholders must be supplied. To specify
/// placeholder values at runtime, use some of the overloaded
/// {@link XmlTemplate#setVariable(String, String) setVariable()} methods. Once this method
/// returns, all placeholder values are preserved. To remove them all, call inhereted
/// {@link XmlTemplate#clearValues() clearValues()} method explicitly.
/// </summary>
/// <returns>
/// RrdDef object constructed from the underlying XML template,
/// with all placeholders replaced with real values. This object can be passed to the constructor
/// of the new RrdDb object.
/// </returns>
public RrdDef GetRrdDef()
{
if (XmlDocument.Name != "rrd_def")
{
throw new RrdException("XML definition must start with <rrd_def>");
}
ValidateTagsOnlyOnce(XmlDocument, new[]
{
"path", "start", "step", "datasource*", "archive*"
});
// PATH must be supplied or exception is thrown
String path = GetChildValue(XmlDocument, "path");
var rrdDef = new RrdDef(path);
try
{
rrdDef.StartTime = GetChildValueAsLong(XmlDocument, "start");
}
catch (RrdException)
{
// START is not mandatory
}
try
{
long step = GetChildValueAsLong(XmlDocument, "step");
rrdDef.Step = step;
}
catch (RrdException)
{
// STEP is not mandatory
}
// datsources
XmlNode[] dsNodes = GetChildNodes(XmlDocument, "datasource");
foreach (XmlNode dsNode in dsNodes)
{
ValidateTagsOnlyOnce(dsNode, new[]
{
"name", "type", "heartbeat", "min", "max"
});
String name = GetChildValue(dsNode, "name");
var type = GetChildValueAsEnum<DataSourceType>(dsNode, "type");
long heartbeat = GetChildValueAsLong(dsNode, "heartbeat");
double min = GetChildValueAsDouble(dsNode, "min");
double max = GetChildValueAsDouble(dsNode, "max");
rrdDef.AddDatasource(name, type, heartbeat, min, max);
}
// archives
XmlNode[] arcNodes = GetChildNodes(XmlDocument, "archive");
foreach (XmlNode arcNode in arcNodes)
{
ValidateTagsOnlyOnce(arcNode, new[]
{
"cf", "xff", "steps", "rows"
});
var consolFun = GetChildValueAsEnum<ConsolidationFunction>(arcNode, "cf");
double xff = GetChildValueAsDouble(arcNode, "xff");
int steps = GetChildValueAsInt(arcNode, "steps");
int rows = GetChildValueAsInt(arcNode, "rows");
rrdDef.AddArchive(consolFun, xff, steps, rows);
}
return rrdDef;
}
public void RrdbInitializationTest()
{
DateTime start = new DateTime(2000, 2, 1, 2, 3, 4);
RrdDef def = new RrdDef(SAMPLE);
def.Step = 10;
def.StartTime = start.GetTimestamp();
def.AddDatasource(DsDef.FromRrdToolString("DS:input:GAUGE:600:0:U"));
def.AddArchive(ArcDef.FromRrdToolString("RRA:AVERAGE:0.5:10:1000"));
using(RrdDb db = RrdDb.Create(def))
{
Assert.AreEqual(10,db.Header.Step);
DateTime lastUpdate = db.LastUpdateTime.ToDateTime();
Assert.AreEqual(2000, lastUpdate.Year);
Assert.AreEqual(2, lastUpdate.Month);
Assert.AreEqual(1, lastUpdate.Day);
Assert.AreEqual(2, lastUpdate.Hour);
Assert.AreEqual(3, lastUpdate.Minute);
Assert.AreEqual(4, lastUpdate.Second);
Assert.AreEqual(0, db.DataSources[0].AccumulatedValue);
Assert.AreEqual(double.NaN, db.DataSources[0].LastValue);
Archive a = db.Archives[0];
//TODO: Add tests for StartTime/EndTime of Archive
}
if(File.Exists(SAMPLE))
File.Delete(SAMPLE);
}
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]));
}
}
public void CreateDbWithoutArchiveThrowException()
{
RrdDef def = new RrdDef(@"c:\doesnotexists");
def.AddDatasource("test",DataSourceType.GAUGE,100,0,100);
RrdDb.Create(def); //No RRD Archive specified. At least one is needed.
}
public void TestCounter2()
{
DateTime start = new DateTime(2012, 08, 22);
RrdDef def = new RrdDef(SAMPLE,start.GetTimestamp(),60);
def.AddDatasource(DsDef.FromRrdToolString("DS:speed:COUNTER:60:U:U")); // 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();
}
FetchRequest request = db.CreateFetchRequest(ConsolidationFunction.AVERAGE,
start.AddHours(3).GetTimestamp(),
start.AddHours(13).GetTimestamp(),
3600);
FetchData data = request.FetchData();
Assert.AreEqual(3600, data.MatchingArchive.TimeStep);
Assert.AreEqual(60, data.MatchingArchive.Steps);
Assert.AreEqual(12, data.RowCount);
start = new DateTime(2012, 08, 22);
FetchRequest r2 = db.CreateFetchRequest(ConsolidationFunction.AVERAGE,
start.AddHours(3).GetTimestamp(),
start.AddHours(13).GetTimestamp(),
300);
FetchData data2 = r2.FetchData();
Debug.WriteLine(data2.Dump());
Assert.AreEqual(300, data2.MatchingArchive.TimeStep);
Assert.AreEqual(5, data2.MatchingArchive.Steps);
Assert.AreEqual(121, data2.RowCount);
}
}
public void TestCounterFromTutorial()
{
RrdDef def = new RrdDef(SAMPLE);
def.StartTime = 920804400;
def.AddDatasource(DsDef.FromRrdToolString("DS:speed:COUNTER:600:U:U"));
def.AddArchive(ArcDef.FromRrdToolString("RRA:AVERAGE:0.5:1:24"));
def.AddArchive(ArcDef.FromRrdToolString("RRA:AVERAGE:0.5:6:10"));
using (RrdDb db = RrdDb.Create(def))
{
Sample sample = db.CreateSample();
sample.SetAndUpdate("920804700:12345", "920805000:12357", "920805300:12363");
sample.SetAndUpdate("920805600:12363", "920805900:12363 ", "920806200:12373");
sample.SetAndUpdate("920806500:12383", "920806800:12393", "920807100:12399");
sample.SetAndUpdate("920807400:12405", "920807700:12411", "920808000:12415");
sample.SetAndUpdate("920808300:12420", "920808600:12422", "920808900:12423");
FetchRequest req = db.CreateFetchRequest(ConsolidationFunction.AVERAGE, 920804400, 920809200);
FetchData data = db.FetchData(req);
Assert.AreEqual(920804400, data.Timestamps[0]); // We have this additional that is not present
Assert.AreEqual(double.NaN, data.Values[0][0]); // in the tutorial, but it looks correct
Assert.AreEqual(920804700, data.Timestamps[1]);
Assert.AreEqual(double.NaN, data.Values[0][1]);
Assert.AreEqual(920805000, data.Timestamps[2]);
Assert.AreEqual(4.0000000000e-02, data.Values[0][2]);
Assert.AreEqual(920805300, data.Timestamps[3]);
Assert.AreEqual(2.0000000000e-02, data.Values[0][3]);
Assert.AreEqual(920805600, data.Timestamps[4]);
Assert.AreEqual(0.0000000000e+00, data.Values[0][4]);
Assert.AreEqual(920805900, data.Timestamps[5]);
Assert.AreEqual(0.0000000000e+00, data.Values[0][5]);
Assert.AreEqual(920806200, data.Timestamps[6]);
Assert.AreEqual(0.03333, Math.Round(data.Values[0][6], 5));
Assert.AreEqual(920806500, data.Timestamps[7]);
Assert.AreEqual(0.03333, Math.Round(data.Values[0][7], 5));
Assert.AreEqual(920806800, data.Timestamps[8]);
Assert.AreEqual(0.03333, Math.Round(data.Values[0][8], 5));
Assert.AreEqual(920807100, data.Timestamps[9]);
Assert.AreEqual(2.0000000000e-02, data.Values[0][9]);
Assert.AreEqual(920807400, data.Timestamps[10]);
Assert.AreEqual(2.0000000000e-02, data.Values[0][10]);
Assert.AreEqual(920807700, data.Timestamps[11]);
Assert.AreEqual(2.0000000000e-02, data.Values[0][11]);
Assert.AreEqual(920808000, data.Timestamps[12]);
Assert.AreEqual(0.01333, Math.Round(data.Values[0][12], 5));
Assert.AreEqual(920808300, data.Timestamps[13]);
Assert.AreEqual(0.01667, Math.Round(data.Values[0][13], 5));
Assert.AreEqual(920808600, data.Timestamps[14]);
Assert.AreEqual(0.00667, Math.Round(data.Values[0][14], 5));
Assert.AreEqual(920808900, data.Timestamps[15]);
Assert.AreEqual(0.00333, Math.Round(data.Values[0][15], 5));
Assert.AreEqual(920809200, data.Timestamps[16]);
Assert.AreEqual(double.NaN, data.Values[0][16]);
Assert.AreEqual(17, data.Values[0].Length);
}
if (File.Exists(SAMPLE))
File.Delete(SAMPLE);
}
public void TestConsolidationFunctionTest()
{
DateTime start = new DateTime(2000, 2, 1, 2, 3, 0); // Start at 0 seconds to align on the step parameter
RrdDef def = new RrdDef(SAMPLE);
def.Step = 10;
def.StartTime = start.GetTimestamp();
def.AddDatasource(DsDef.FromRrdToolString("DS:input:GAUGE:600:0:U"));
def.AddArchive(ArcDef.FromRrdToolString("RRA:AVERAGE:0.5:2:1000"));
def.AddArchive(ArcDef.FromRrdToolString("RRA:MAX:0.5:2:1000"));
def.AddArchive(ArcDef.FromRrdToolString("RRA:MIN:0.5:2:1000"));
def.AddArchive(ArcDef.FromRrdToolString("RRA:LAST:0.5:2:1000"));
using (RrdDb db = RrdDb.Create(def))
{
DateTime sampleDate = start.AddSeconds(def.Step);
Sample sample = db.CreateSample(sampleDate.GetTimestamp());
sample.Values = new double[] { 10 };
sample.Update();
DateTime lastUpdate = db.LastUpdateTime.ToDateTime();
Assert.AreEqual(sampleDate,lastUpdate);
Assert.AreEqual(10,db.DataSources[0].LastValue);
Assert.AreEqual(10, db.Archives[0].GetArcState(0).AccumulatedValue);
sampleDate = sampleDate.AddSeconds(def.Step);
sample.Time = sampleDate.GetTimestamp();
sample.Values = new double[] { 20 };
sample.Update();
lastUpdate = db.LastUpdateTime.ToDateTime();
Assert.AreEqual(sampleDate, lastUpdate);
Assert.AreEqual(20, db.DataSources[0].LastValue);
Assert.AreEqual(double.NaN, db.Archives[0].GetArcState(0).AccumulatedValue);
Assert.AreEqual(15.0, db.Archives[0].GetRobin(0).GetValue(-1)); // Check average just compiled value
Assert.AreEqual(20.0, db.Archives[1].GetRobin(0).GetValue(-1)); // Check max value
Assert.AreEqual(10.0, db.Archives[2].GetRobin(0).GetValue(-1)); // Check min value
Assert.AreEqual(20.0, db.Archives[3].GetRobin(0).GetValue(-1)); // Check last value
Assert.AreEqual(20,db.Archives[0].TimeStep);
}
if (File.Exists(SAMPLE))
File.Delete(SAMPLE);
}