public void ProbabilitySampler_SampleBasedOnTraceId()
{
ActivitySampler defaultProbability = new ProbabilityActivitySampler(0.0001);
// This traceId will not be sampled by the ProbabilityActivitySampler because the first 8 bytes as long
// is not less than probability * Long.MAX_VALUE;
var notSampledtraceId =
ActivityTraceId.CreateFromBytes(
new byte[]
{
0x8F,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0xFF,
0,
0,
0,
0,
0,
0,
0,
0,
});
Assert.False(
defaultProbability.ShouldSample(new ActivitySamplingParameters(
public void ProbabilitySampler_DifferentProbabilities_SampledParentLink()
{
var neverSample = new ProbabilityActivitySampler(0.0);
AssertSamplerSamplesWithProbability(
neverSample, this.notSampledActivityContext, new List <ActivityLink>()
{
this.sampledLink
}, 1.0);
var alwaysSample = new ProbabilityActivitySampler(1.0);
AssertSamplerSamplesWithProbability(
alwaysSample, this.notSampledActivityContext, new List <ActivityLink>()
{
this.sampledLink
}, 1.0);
var fiftyPercentSample = new ProbabilityActivitySampler(0.5);
AssertSamplerSamplesWithProbability(
fiftyPercentSample, this.notSampledActivityContext, new List <ActivityLink>()
{
this.sampledLink
}, 1.0);
var twentyPercentSample = new ProbabilityActivitySampler(0.2);
AssertSamplerSamplesWithProbability(
twentyPercentSample, this.notSampledActivityContext, new List <ActivityLink>()
{
this.sampledLink
}, 1.0);
var twoThirdsSample = new ProbabilityActivitySampler(2.0 / 3.0);
AssertSamplerSamplesWithProbability(
twoThirdsSample, this.notSampledActivityContext, new List <ActivityLink>()
{
this.sampledLink
}, 1.0);
}
public void ProbabilitySampler_DifferentProbabilities_NotSampledParent()
{
var neverSample = new ProbabilityActivitySampler(0.0);
AssertSamplerSamplesWithProbability(
neverSample, this.notSampledActivityContext, null, 0.0);
var alwaysSample = new ProbabilityActivitySampler(1.0);
AssertSamplerSamplesWithProbability(
alwaysSample, this.notSampledActivityContext, null, 1.0);
var fiftyPercentSample = new ProbabilityActivitySampler(0.5);
AssertSamplerSamplesWithProbability(
fiftyPercentSample, this.notSampledActivityContext, null, 0.5);
var twentyPercentSample = new ProbabilityActivitySampler(0.2);
AssertSamplerSamplesWithProbability(
twentyPercentSample, this.notSampledActivityContext, null, 0.2);
var twoThirdsSample = new ProbabilityActivitySampler(2.0 / 3.0);
AssertSamplerSamplesWithProbability(
twoThirdsSample, this.notSampledActivityContext, null, 2.0 / 3.0);
}