public void DefaultTraceParams()
{
Assert.Equal(Samplers.GetProbabilitySampler(1e-4), TraceParams.Default.Sampler);
Assert.Equal(32, TraceParams.Default.MaxNumberOfAttributes);
Assert.Equal(32, TraceParams.Default.MaxNumberOfAnnotations);
Assert.Equal(128, TraceParams.Default.MaxNumberOfMessageEvents);
Assert.Equal(128, TraceParams.Default.MaxNumberOfLinks);
}
public void ProbabilitySampler_DifferentProbabilities_SampledParentLink()
{
ISampler neverSample = Samplers.GetProbabilitySampler(0.0);
AssertSamplerSamplesWithProbability(
neverSample, notSampledSpanContext, new List <ISpan>()
{
sampledSpan
}, 1.0);
ISampler alwaysSample = Samplers.GetProbabilitySampler(1.0);
AssertSamplerSamplesWithProbability(
alwaysSample, notSampledSpanContext, new List <ISpan>()
{
sampledSpan
}, 1.0);
ISampler fiftyPercentSample = Samplers.GetProbabilitySampler(0.5);
AssertSamplerSamplesWithProbability(
fiftyPercentSample, notSampledSpanContext, new List <ISpan>()
{
sampledSpan
}, 1.0);
ISampler twentyPercentSample = Samplers.GetProbabilitySampler(0.2);
AssertSamplerSamplesWithProbability(
twentyPercentSample, notSampledSpanContext, new List <ISpan>()
{
sampledSpan
}, 1.0);
ISampler twoThirdsSample = Samplers.GetProbabilitySampler(2.0 / 3.0);
AssertSamplerSamplesWithProbability(
twoThirdsSample, notSampledSpanContext, new List <ISpan>()
{
sampledSpan
}, 1.0);
}
public void ProbabilitySampler_ToString()
{
var result = Samplers.GetProbabilitySampler(0.5).ToString();
Assert.Contains($"0{CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator}5", result);
}
public void ProbabilitySampler_getDescription()
{
Assert.Equal(String.Format("ProbabilitySampler({0:F6})", 0.5), Samplers.GetProbabilitySampler(0.5).Description);
}
public void ProbabilitySampler_SampleBasedOnTraceId()
{
ISampler defaultProbability = Samplers.GetProbabilitySampler(0.0001);
// This traceId will not be sampled by the ProbabilitySampler because the first 8 bytes as long
// is not less than probability * Long.MAX_VALUE;
ITraceId notSampledtraceId =
TraceId.FromBytes(
new byte[] {
0x8F,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0,
0,
0,
0,
0,
0,
0,
0,
});
Assert.False(
defaultProbability.ShouldSample(
null,
false,
notSampledtraceId,
SpanId.GenerateRandomId(random),
SPAN_NAME,
new List <ISpan>()));
// This traceId will be sampled by the ProbabilitySampler because the first 8 bytes as long
// is less than probability * Long.MAX_VALUE;
ITraceId sampledtraceId =
TraceId.FromBytes(
new byte[] {
0x00,
0x00,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0,
0,
0,
0,
0,
0,
0,
0,
});
Assert.True(
defaultProbability.ShouldSample(
null,
false,
sampledtraceId,
SpanId.GenerateRandomId(random),
SPAN_NAME,
new List <ISpan>()));
}
public void ProbabilitySampler_OutOfRangeLowProbability()
{
Assert.Throws <ArgumentOutOfRangeException>(() => Samplers.GetProbabilitySampler(-0.00001));
}
public void ProbabilitySampler_ToString()
{
Assert.Contains("0.5", Samplers.GetProbabilitySampler(0.5).ToString());
}