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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/jaegertracing/opentelemetry-cpp/sdk/test/trace/trace_id_ratio_sampler_test.cc | |
parent | Initial commit. (diff) | |
download | ceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/jaegertracing/opentelemetry-cpp/sdk/test/trace/trace_id_ratio_sampler_test.cc')
-rw-r--r-- | src/jaegertracing/opentelemetry-cpp/sdk/test/trace/trace_id_ratio_sampler_test.cc | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/src/jaegertracing/opentelemetry-cpp/sdk/test/trace/trace_id_ratio_sampler_test.cc b/src/jaegertracing/opentelemetry-cpp/sdk/test/trace/trace_id_ratio_sampler_test.cc new file mode 100644 index 000000000..1b0088f13 --- /dev/null +++ b/src/jaegertracing/opentelemetry-cpp/sdk/test/trace/trace_id_ratio_sampler_test.cc @@ -0,0 +1,258 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +#include "opentelemetry/sdk/trace/samplers/trace_id_ratio.h" +#include "opentelemetry/trace/span_context_kv_iterable_view.h" +#include "src/common/random.h" + +#include <gtest/gtest.h> +#include <cstdlib> +#include <ctime> + +using opentelemetry::sdk::common::Random; +using opentelemetry::sdk::trace::Decision; +using opentelemetry::sdk::trace::TraceIdRatioBasedSampler; +namespace trace_api = opentelemetry::trace; +namespace common = opentelemetry::common; + +namespace +{ +/* + * Helper function for running TraceIdBased sampler tests. + * Given a span context, sampler, and number of iterations this function + * will return the number of RECORD_AND_SAMPLE decision based on randomly + * generated traces. + * + * @param context a required valid span context + * @param sampler a required valid sampler + * @param iterations a required number specifying the number of times to + * generate a random trace_id and check if it should sample using the provided + * provider and context + */ +int RunShouldSampleCountDecision(trace_api::SpanContext &context, + TraceIdRatioBasedSampler &sampler, + int iterations) +{ + int actual_count = 0; + + trace_api::SpanKind span_kind = trace_api::SpanKind::kInternal; + + using M = std::map<std::string, int>; + M m1 = {{}}; + + using L = std::vector<std::pair<trace_api::SpanContext, std::map<std::string, std::string>>>; + L l1 = {{trace_api::SpanContext(false, false), {}}, {trace_api::SpanContext(false, false), {}}}; + + common::KeyValueIterableView<M> view{m1}; + trace_api::SpanContextKeyValueIterableView<L> links{l1}; + + for (int i = 0; i < iterations; ++i) + { + uint8_t buf[16] = {0}; + Random::GenerateRandomBuffer(buf); + + trace_api::TraceId trace_id(buf); + + auto result = sampler.ShouldSample(context, trace_id, "", span_kind, view, links); + if (result.decision == Decision::RECORD_AND_SAMPLE) + { + ++actual_count; + } + } + + return actual_count; +} +} // namespace + +TEST(TraceIdRatioBasedSampler, ShouldSampleWithoutContext) +{ + trace_api::TraceId invalid_trace_id; + + trace_api::SpanKind span_kind = trace_api::SpanKind::kInternal; + + using M = std::map<std::string, int>; + M m1 = {{}}; + + using L = std::vector<std::pair<trace_api::SpanContext, std::map<std::string, std::string>>>; + L l1 = {{trace_api::SpanContext(false, false), {}}, {trace_api::SpanContext(false, false), {}}}; + + common::KeyValueIterableView<M> view{m1}; + trace_api::SpanContextKeyValueIterableView<L> links{l1}; + + TraceIdRatioBasedSampler s1(0.01); + + auto sampling_result = s1.ShouldSample(trace_api::SpanContext::GetInvalid(), invalid_trace_id, "", + span_kind, view, links); + + ASSERT_EQ(Decision::RECORD_AND_SAMPLE, sampling_result.decision); + ASSERT_EQ(nullptr, sampling_result.attributes); + + constexpr uint8_t buf[] = {0, 0, 0, 0, 0, 0, 0, 0x80, 0, 0, 0, 0, 0, 0, 0, 0}; + trace_api::TraceId valid_trace_id(buf); + + sampling_result = s1.ShouldSample(trace_api::SpanContext::GetInvalid(), valid_trace_id, "", + span_kind, view, links); + + ASSERT_EQ(Decision::DROP, sampling_result.decision); + ASSERT_EQ(nullptr, sampling_result.attributes); + + TraceIdRatioBasedSampler s2(0.50000001); + + sampling_result = s2.ShouldSample(trace_api::SpanContext::GetInvalid(), valid_trace_id, "", + span_kind, view, links); + + ASSERT_EQ(Decision::RECORD_AND_SAMPLE, sampling_result.decision); + ASSERT_EQ(nullptr, sampling_result.attributes); + + TraceIdRatioBasedSampler s3(0.49999999); + + sampling_result = s3.ShouldSample(trace_api::SpanContext::GetInvalid(), valid_trace_id, "", + span_kind, view, links); + + ASSERT_EQ(Decision::DROP, sampling_result.decision); + ASSERT_EQ(nullptr, sampling_result.attributes); + + TraceIdRatioBasedSampler s4(0.50000000); + + sampling_result = s4.ShouldSample(trace_api::SpanContext::GetInvalid(), valid_trace_id, "", + span_kind, view, links); + + ASSERT_EQ(Decision::RECORD_AND_SAMPLE, sampling_result.decision); + ASSERT_EQ(nullptr, sampling_result.attributes); +} + +TEST(TraceIdRatioBasedSampler, ShouldSampleWithContext) +{ + + uint8_t trace_id_buffer[trace_api::TraceId::kSize] = {1}; + trace_api::TraceId trace_id{trace_id_buffer}; + uint8_t span_id_buffer[trace_api::SpanId::kSize] = {1}; + trace_api::SpanId span_id{span_id_buffer}; + + trace_api::SpanKind span_kind = trace_api::SpanKind::kInternal; + trace_api::SpanContext c1(trace_id, span_id, trace_api::TraceFlags{0}, false); + trace_api::SpanContext c2(trace_id, span_id, trace_api::TraceFlags{1}, false); + trace_api::SpanContext c3(trace_id, span_id, trace_api::TraceFlags{0}, true); + trace_api::SpanContext c4(trace_id, span_id, trace_api::TraceFlags{1}, true); + + using M = std::map<std::string, int>; + M m1 = {{}}; + + using L = std::vector<std::pair<trace_api::SpanContext, std::map<std::string, std::string>>>; + L l1 = {{trace_api::SpanContext(false, false), {}}, {trace_api::SpanContext(false, false), {}}}; + + common::KeyValueIterableView<M> view{m1}; + trace_api::SpanContextKeyValueIterableView<L> links{l1}; + + TraceIdRatioBasedSampler s1(0.01); + + auto sampling_result = s1.ShouldSample(c1, trace_id, "", span_kind, view, links); + + ASSERT_EQ(Decision::RECORD_AND_SAMPLE, sampling_result.decision); + ASSERT_EQ(nullptr, sampling_result.attributes); + + sampling_result = s1.ShouldSample(c2, trace_id, "", span_kind, view, links); + + ASSERT_EQ(Decision::RECORD_AND_SAMPLE, sampling_result.decision); + ASSERT_EQ(nullptr, sampling_result.attributes); + + sampling_result = s1.ShouldSample(c3, trace_id, "", span_kind, view, links); + + ASSERT_EQ(Decision::RECORD_AND_SAMPLE, sampling_result.decision); + ASSERT_EQ(nullptr, sampling_result.attributes); + + sampling_result = s1.ShouldSample(c4, trace_id, "", span_kind, view, links); + + ASSERT_EQ(Decision::RECORD_AND_SAMPLE, sampling_result.decision); + ASSERT_EQ(nullptr, sampling_result.attributes); +} + +TEST(TraceIdRatioBasedSampler, TraceIdRatioBasedSamplerHalf) +{ + double ratio = 0.5; + int iterations = 100000; + int expected_count = static_cast<int>(iterations * ratio); + int variance = static_cast<int>(iterations * 0.01); + + trace_api::SpanContext c(true, true); + TraceIdRatioBasedSampler s(ratio); + + int actual_count = RunShouldSampleCountDecision(c, s, iterations); + + ASSERT_TRUE(actual_count < (expected_count + variance)); + ASSERT_TRUE(actual_count > (expected_count - variance)); +} + +TEST(TraceIdRatioBasedSampler, TraceIdRatioBasedSamplerOnePercent) +{ + double ratio = 0.01; + int iterations = 100000; + int expected_count = static_cast<int>(iterations * ratio); + int variance = static_cast<int>(iterations * 0.01); + + trace_api::SpanContext c(true, true); + TraceIdRatioBasedSampler s(ratio); + + int actual_count = RunShouldSampleCountDecision(c, s, iterations); + + ASSERT_TRUE(actual_count < (expected_count + variance)); + ASSERT_TRUE(actual_count > (expected_count - variance)); +} + +TEST(TraceIdRatioBasedSampler, TraceIdRatioBasedSamplerAll) +{ + double ratio = 1.0; + int iterations = 100000; + int expected_count = static_cast<int>(iterations * ratio); + + trace_api::SpanContext c(true, true); + TraceIdRatioBasedSampler s(ratio); + + int actual_count = RunShouldSampleCountDecision(c, s, iterations); + + ASSERT_EQ(actual_count, expected_count); +} + +TEST(TraceIdRatioBasedSampler, TraceIdRatioBasedSamplerNone) +{ + double ratio = 0.0; + int iterations = 100000; + int expected_count = static_cast<int>(iterations * ratio); + + trace_api::SpanContext c(true, true); + TraceIdRatioBasedSampler s(ratio); + + int actual_count = RunShouldSampleCountDecision(c, s, iterations); + + ASSERT_EQ(actual_count, expected_count); +} + +TEST(TraceIdRatioBasedSampler, GetDescription) +{ + TraceIdRatioBasedSampler s1(0.01); + ASSERT_EQ("TraceIdRatioBasedSampler{0.010000}", s1.GetDescription()); + + TraceIdRatioBasedSampler s2(0.00); + ASSERT_EQ("TraceIdRatioBasedSampler{0.000000}", s2.GetDescription()); + + TraceIdRatioBasedSampler s3(1.00); + ASSERT_EQ("TraceIdRatioBasedSampler{1.000000}", s3.GetDescription()); + + TraceIdRatioBasedSampler s4(0.102030405); + ASSERT_EQ("TraceIdRatioBasedSampler{0.102030}", s4.GetDescription()); + + TraceIdRatioBasedSampler s5(3.00); + ASSERT_EQ("TraceIdRatioBasedSampler{1.000000}", s5.GetDescription()); + + TraceIdRatioBasedSampler s6(-3.00); + ASSERT_EQ("TraceIdRatioBasedSampler{0.000000}", s6.GetDescription()); + + TraceIdRatioBasedSampler s7(1.00000000001); + ASSERT_EQ("TraceIdRatioBasedSampler{1.000000}", s7.GetDescription()); + + TraceIdRatioBasedSampler s8(-1.00000000001); + ASSERT_EQ("TraceIdRatioBasedSampler{0.000000}", s8.GetDescription()); + + TraceIdRatioBasedSampler s9(0.50); + ASSERT_EQ("TraceIdRatioBasedSampler{0.500000}", s9.GetDescription()); +} |