public void apdex_score_should_be_between_zero_and_one()
{
const double apdexTSeconds = 0.5;
const int fromMilliSeconds = 20;
const int toMilliSeconds = 5000;
const int sampleSize = 1024;
var random = new Random();
var clock = new TestClock();
IApdexMetric apdexMetric = new ApdexMetric(SamplingType.ExponentiallyDecaying, sampleSize,
Constants.ReservoirSampling.DefaultExponentialDecayFactor, clock, apdexTSeconds, false);
foreach (var requestNumber in Enumerable.Range(0, 1000))
{
using (apdexMetric.NewContext())
{
clock.Advance(TimeUnit.Milliseconds, random.Next(fromMilliSeconds, toMilliSeconds));
}
}
var score = apdexMetric.GetValue().Score;
score.Should().BeGreaterOrEqualTo(0);
score.Should().BeLessOrEqualTo(1);
}
public void can_report_apdex()
{
var expected = StringReporterSamples.Apdex.ExtractStringReporterSampleFromResourceFile();
var clock = new TestClock();
var sr = new StringReporter();
var reservoir = new ExponentiallyDecayingReservoir(Constants.ReservoirSampling.DefaultSampleSize,
Constants.ReservoirSampling.DefaultExponentialDecayFactor, clock, new TestTaskScheduler(clock));
var metric = new ApdexMetric(new ApdexProvider(reservoir, Constants.ReservoirSampling.DefaultApdexTSeconds), clock, true);
metric.Track(1000);
sr.ReportMetric("test", new ApdexValueSource("apdex_name", metric, MetricTags.None));
AssertReportResult(sr.Result, expected);
}
public void can_report_apdex()
{
var metricsMock = new Mock <IMetrics>();
var clock = new TestClock();
var gauge = new ApdexMetric(SamplingType.ExponentiallyDecaying, 1028, 0.015, clock, false);
var apdexValueSource = new ApdexValueSource("test apdex",
ConstantValue.Provider(gauge.Value), MetricTags.None, false);
var payloadBuilder = new LineProtocolPayloadBuilder();
var reporter = CreateReporter(payloadBuilder);
reporter.StartReportRun(metricsMock.Object);
reporter.ReportMetric("test", apdexValueSource);
payloadBuilder.PayloadFormatted().Should().Be("test__test_apdex samples=0i,score=0,satisfied=0i,tolerating=0i,frustrating=0i\n");
}
public void can_add_apdex_values()
{
var clock = new TestClock();
var apdex = new ApdexMetric(SamplingType.ExponentiallyDecaying, 1028, 0.015, clock, true);
apdex.Track(10000);
var values = new Dictionary <string, object>();
apdex.Value.AddApdexValues(values);
values.Keys.Should().Contain("samples");
values.Keys.Should().Contain("score");
values.Keys.Should().Contain("satisfied");
values.Keys.Should().Contain("tolerating");
values.Keys.Should().Contain("frustrating");
}
public IApdexMetric RunSamplesForApdexCalculation(double apdexTSeconds, int satisifedRequests,
int toleratingRequests, int frustratingRequest, TestSamplePreference testSamplePreference)
{
var maxSatifiedDurationMilliseconds = (int)(apdexTSeconds * 1000);
var minToleratedDurationMilliseconds = maxSatifiedDurationMilliseconds + 1;
var maxToleratedDurationMilliseconds = 4 * (int)(apdexTSeconds * 1000);
var minFrustratedDurationMilliseconds = maxToleratedDurationMilliseconds + 1;
const int sampleSize = 1024;
var clock = new TestClock();
var random = new Random();
var satisfiedRequestsDurations = Enumerable.Range(1, satisifedRequests).Select(x => random.Next(1, maxSatifiedDurationMilliseconds));
var toleratingRequestsDurations =
Enumerable.Range(1, toleratingRequests).Select(x => random.Next(minToleratedDurationMilliseconds, maxToleratedDurationMilliseconds));
var frustratingRequestsDurations =
Enumerable.Range(1, frustratingRequest)
.Select(x => random.Next(minFrustratedDurationMilliseconds, minFrustratedDurationMilliseconds * 2));
var apdexMetric = new ApdexMetric(SamplingType.ExponentiallyDecaying, sampleSize,
Constants.ReservoirSampling.DefaultExponentialDecayFactor, clock, apdexTSeconds);
if (testSamplePreference == TestSamplePreference.Satisified)
{
RunSamples(satisfiedRequestsDurations, apdexMetric, clock);
RunSamples(toleratingRequestsDurations, apdexMetric, clock);
RunSamples(frustratingRequestsDurations, apdexMetric, clock);
}
else if (testSamplePreference == TestSamplePreference.Frustrating)
{
RunSamples(frustratingRequestsDurations, apdexMetric, clock);
RunSamples(toleratingRequestsDurations, apdexMetric, clock);
RunSamples(satisfiedRequestsDurations, apdexMetric, clock);
}
else
{
RunSamples(toleratingRequestsDurations, apdexMetric, clock);
RunSamples(frustratingRequestsDurations, apdexMetric, clock);
RunSamples(satisfiedRequestsDurations, apdexMetric, clock);
}
return(apdexMetric);
}
public ApdexMetricTests()
{
_apdex = new ApdexMetric(SamplingType.ExponentiallyDecaying, Constants.ReservoirSampling.DefaultSampleSize,
Constants.ReservoirSampling.DefaultSampleSize, _clock, Constants.ReservoirSampling.DefaultApdexTSeconds);
}
