public void TestNegativeChildSampling()
{
// Create tracer that samples all spans
var tracer = new WavefrontTracer
.Builder(new ConsoleReporter("source"), BuildApplicationTags())
.WithSampler(new ConstantSampler(true))
.Build();
// Create parentContext with sampled set to false
var parentContext =
new WavefrontSpanContext(Guid.NewGuid(), Guid.NewGuid(), null, false);
// Verify span created AsChildOf parentContext inherits parent sampling decision
var span = (WavefrontSpan)tracer.BuildSpan("testOp").AsChildOf(parentContext).Start();
var spanContext = (WavefrontSpanContext)span.Context;
long traceId = TraceIdToLong(spanContext.GetTraceId());
Assert.True(tracer.Sample(span.GetOperationName(), traceId, 0));
Assert.NotNull(span);
Assert.Equal(parentContext.TraceId, spanContext.TraceId);
Assert.True(spanContext.IsSampled());
bool?samplingDecision = spanContext.GetSamplingDecision();
Assert.True(samplingDecision.HasValue);
Assert.False(samplingDecision.Value);
}
public void TestSampling()
{
var tracer = new WavefrontTracer
.Builder(new ConsoleReporter("source"), BuildApplicationTags())
.WithSampler(new ConstantSampler(true))
.Build();
Assert.True(tracer.Sample("testOp", 1L, 0));
tracer = new WavefrontTracer
.Builder(new ConsoleReporter("source"), BuildApplicationTags())
.WithSampler(new ConstantSampler(false))
.Build();
Assert.False(tracer.Sample("testOp", 1L, 0));
}