public void Sample_NoMatchingFilters()
{
// Both filters will fail to match the incoming HttpRequest here, and defaultSampler should collect the trace.
var filter1 = new MockSamplingFilter(r => r != null);
var filter2 = new MockSamplingFilter(r => r != null);
var defaultSampler = new MockSampler();
var unit = new RequestFilteringSampler(new ISamplingFilter[]
{
filter1,
filter2
},
defaultSampler,
Mock.Of <IHttpContextAccessor>(a => a.HttpContext == Mock.Of <HttpContext>(c => c.Request == null)));
unit.Sample("TestOperation", new Jaeger.TraceId(1, 1));
filter1.ShouldSampleCallLogs.Should().HaveCount(1, "because we only called unit.Sample once");
filter2.ShouldSampleCallLogs.Should().HaveCount(1, "because we only called unit.Sample once");
filter1.ShouldSampleCallLogs[0].HttpRequest.Should().BeNull("because our HttpContextAccessor supplied a null request");
filter1.ShouldSampleCallLogs[0].Result.Should().BeFalse("because the filter should not match a null request");
filter2.ShouldSampleCallLogs[0].HttpRequest.Should().BeNull("because our HttpContextAccessor supplied a null request");
filter2.ShouldSampleCallLogs[0].Result.Should().BeFalse("because the filter should not match a null request");
defaultSampler.Samples.Should().HaveCount(1, "because the sample passed over both filters so should go to our default");
defaultSampler.Samples[0].Operation.Should().Be("TestOperation", "because this is the sample we sent to our sampler");
}
public void Sample_MultipleMatchingFilters()
{
// Both filters will match the incoming HttpRequest here, but the trace should go to only the first one
var filter1 = new MockSamplingFilter(r => r == null);
var filter2 = new MockSamplingFilter(r => r == null);
var defaultSampler = new MockSampler();
var unit = new RequestFilteringSampler(new ISamplingFilter[]
{
filter1,
filter2
},
defaultSampler,
Mock.Of <IHttpContextAccessor>(a => a.HttpContext == Mock.Of <HttpContext>(c => c.Request == null)));
unit.Sample("TestOperation", new Jaeger.TraceId(1, 1));
filter1.ShouldSampleCallLogs.Should().HaveCount(1, "because we only called unit.Sample once");
filter2.ShouldSampleCallLogs.Should().BeEmpty(
"because the only sample was matched by filter1, so should have never made it to a subsequent filter");
filter1.ShouldSampleCallLogs[0].HttpRequest.Should().BeNull("because our HttpContextAccessor supplied a null request");
filter1.ShouldSampleCallLogs[0].Result.Should().BeTrue("because the filter matches null request");
filter1.TargetSamplerMock.Samples.Should().HaveCount(1, "because the filter matched the request, so we should have sampled it");
filter1.TargetSamplerMock.Samples[0].Operation.Should().Be("TestOperation", "because this is the sample we sent to our sampler");
defaultSampler.Samples.Should().BeEmpty(
"because the only sample was matched by filter1, so should have never made it to the default sampler");
}