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grpc/test/cpp/ext/otel/otel_plugin_test.cc

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//
//
// Copyright 2023 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//
#include "src/cpp/ext/otel/otel_plugin.h"
#include <atomic>
#include <chrono>
#include <ratio>
#include <type_traits>
#include "absl/functional/any_invocable.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "opentelemetry/common/timestamp.h"
#include "opentelemetry/metrics/provider.h"
#include "opentelemetry/nostd/variant.h"
#include "opentelemetry/sdk/common/attribute_utils.h"
#include "opentelemetry/sdk/metrics/data/point_data.h"
#include "opentelemetry/sdk/metrics/meter_provider.h"
#include "opentelemetry/sdk/metrics/metric_reader.h"
#include <grpcpp/ext/otel_plugin.h>
#include <grpcpp/grpcpp.h>
#include "src/core/lib/config/core_configuration.h"
#include "src/core/telemetry/call_tracer.h"
#include "test/core/test_util/fake_stats_plugin.h"
#include "test/core/test_util/test_config.h"
#include "test/cpp/end2end/test_service_impl.h"
#include "test/cpp/ext/otel/otel_test_library.h"
namespace grpc {
namespace testing {
namespace {
#define GRPC_ARG_SERVER_SELECTOR_KEY "grpc.testing.server_selector_key"
#define GRPC_ARG_SERVER_SELECTOR_VALUE "grpc.testing.server_selector_value"
template <typename T>
void PopulateLabelMap(
T label_keys, T label_values,
std::unordered_map<std::string,
opentelemetry::sdk::common::OwnedAttributeValue>*
label_maps) {
for (size_t i = 0; i < label_keys.size(); ++i) {
(*label_maps)[std::string(label_keys[i])] = std::string(label_values[i]);
}
}
MATCHER_P4(AttributesEq, label_keys, label_values, optional_label_keys,
optional_label_values, "") {
std::unordered_map<std::string,
opentelemetry::sdk::common::OwnedAttributeValue>
label_map;
PopulateLabelMap(label_keys, label_values, &label_map);
PopulateLabelMap(optional_label_keys, optional_label_values, &label_map);
return ::testing::ExplainMatchResult(
::testing::UnorderedElementsAreArray(label_map),
arg.attributes.GetAttributes(), result_listener);
}
template <typename T>
struct Extract;
template <template <typename> class T, typename U>
struct Extract<const T<U>> {
using Type = U;
};
MATCHER_P(CounterResultEq, value_matcher, "") {
return ::testing::ExplainMatchResult(
::testing::VariantWith<opentelemetry::sdk::metrics::SumPointData>(
::testing::Field(&opentelemetry::sdk::metrics::SumPointData::value_,
::testing::VariantWith<
typename Extract<decltype(value_matcher)>::Type>(
value_matcher))),
arg.point_data, result_listener);
}
MATCHER_P4(HistogramResultEq, sum_matcher, min_matcher, max_matcher, count,
"") {
return ::testing::ExplainMatchResult(
::testing::VariantWith<
opentelemetry::sdk::metrics::HistogramPointData>(::testing::AllOf(
::testing::Field(
&opentelemetry::sdk::metrics::HistogramPointData::sum_,
::testing::VariantWith<
typename Extract<decltype(sum_matcher)>::Type>(sum_matcher)),
::testing::Field(
&opentelemetry::sdk::metrics::HistogramPointData::min_,
::testing::VariantWith<
typename Extract<decltype(min_matcher)>::Type>(min_matcher)),
::testing::Field(
&opentelemetry::sdk::metrics::HistogramPointData::max_,
::testing::VariantWith<
typename Extract<decltype(max_matcher)>::Type>(max_matcher)),
::testing::Field(
&opentelemetry::sdk::metrics::HistogramPointData::count_,
::testing::Eq(count)))),
arg.point_data, result_listener);
}
MATCHER_P(GaugeResultIs, value_matcher, "") {
return ::testing::ExplainMatchResult(
::testing::VariantWith<opentelemetry::sdk::metrics::LastValuePointData>(
::testing::AllOf(
::testing::Field(
&opentelemetry::sdk::metrics::LastValuePointData::value_,
::testing::VariantWith<
typename Extract<decltype(value_matcher)>::Type>(
value_matcher)),
::testing::Field(&opentelemetry::sdk::metrics::
LastValuePointData::is_lastvalue_valid_,
::testing::IsTrue()))),
arg.point_data, result_listener);
}
// This check might subject to system clock adjustment.
MATCHER_P(GaugeResultLaterThan, prev_timestamp, "") {
return ::testing::ExplainMatchResult(
::testing::VariantWith<opentelemetry::sdk::metrics::LastValuePointData>(
::testing::Field(
&opentelemetry::sdk::metrics::LastValuePointData::sample_ts_,
::testing::Property(
&opentelemetry::common::SystemTimestamp::time_since_epoch,
::testing::Gt(prev_timestamp.time_since_epoch())))),
arg.point_data, result_listener);
}
MATCHER_P7(GaugeDataIsIncrementalForSpecificMetricAndLabelSet, metric_name,
label_key, label_value, optional_label_key, optional_label_value,
default_value, greater_than, "") {
std::unordered_map<std::string,
opentelemetry::sdk::common::OwnedAttributeValue>
label_map;
PopulateLabelMap(label_key, label_value, &label_map);
PopulateLabelMap(optional_label_key, optional_label_value, &label_map);
opentelemetry::common::SystemTimestamp prev_timestamp;
auto prev_value = default_value;
size_t prev_index = 0;
auto& data = arg.at(metric_name);
bool result = true;
for (size_t i = 1; i < data.size(); ++i) {
if (::testing::Matches(::testing::UnorderedElementsAreArray(
data[i - 1].attributes.GetAttributes()))(label_map)) {
// Update the previous value for the same associated label values.
prev_value = opentelemetry::nostd::get<decltype(prev_value)>(
opentelemetry::nostd::get<
opentelemetry::sdk::metrics::LastValuePointData>(
data[i - 1].point_data)
.value_);
prev_index = i - 1;
prev_timestamp = opentelemetry::nostd::get<
opentelemetry::sdk::metrics::LastValuePointData>(
data[i - 1].point_data)
.sample_ts_;
}
if (!::testing::Matches(::testing::UnorderedElementsAreArray(
data[i].attributes.GetAttributes()))(label_map)) {
// Skip values that do not have the same associated label values.
continue;
}
*result_listener << " Comparing data[" << i << "] with data[" << prev_index
<< "] ";
if (greater_than) {
result &= ::testing::ExplainMatchResult(
::testing::AllOf(
AttributesEq(label_key, label_value, optional_label_key,
optional_label_value),
GaugeResultIs(::testing::Gt(prev_value)),
GaugeResultLaterThan(prev_timestamp)),
data[i], result_listener);
} else {
result &= ::testing::ExplainMatchResult(
::testing::AllOf(
AttributesEq(label_key, label_value, optional_label_key,
optional_label_value),
GaugeResultIs(::testing::Ge(prev_value)),
GaugeResultLaterThan(prev_timestamp)),
data[i], result_listener);
}
}
return result;
}
TEST(OpenTelemetryPluginBuildTest, ApiDependency) {
opentelemetry::metrics::Provider::GetMeterProvider();
}
TEST(OpenTelemetryPluginBuildTest, SdkDependency) {
opentelemetry::sdk::metrics::MeterProvider();
}
TEST(OpenTelemetryPluginBuildTest, Basic) {
grpc::OpenTelemetryPluginBuilder builder;
}
TEST_F(OpenTelemetryPluginEnd2EndTest, ClientAttemptStarted) {
Init(std::move(
Options().set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName})));
SendRPC();
const char* kMetricName = "grpc.client.attempt.started";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data = absl::get_if<opentelemetry::sdk::metrics::SumPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
auto client_started_value = absl::get_if<int64_t>(&point_data->value_);
ASSERT_NE(client_started_value, nullptr);
EXPECT_EQ(*client_started_value, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
const auto* target_value =
absl::get_if<std::string>(&attributes.at("grpc.target"));
ASSERT_NE(target_value, nullptr);
EXPECT_EQ(*target_value, canonical_server_address_);
}
TEST_F(OpenTelemetryPluginEnd2EndTest, ClientAttemptDuration) {
Init(std::move(
Options().set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptDurationInstrumentName})));
SendRPC();
const char* kMetricName = "grpc.client.attempt.duration";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data =
absl::get_if<opentelemetry::sdk::metrics::HistogramPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
ASSERT_EQ(point_data->count_, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 3);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
const auto* target_value =
absl::get_if<std::string>(&attributes.at("grpc.target"));
ASSERT_NE(target_value, nullptr);
EXPECT_EQ(*target_value, canonical_server_address_);
const auto* status_value =
absl::get_if<std::string>(&attributes.at("grpc.status"));
ASSERT_NE(status_value, nullptr);
EXPECT_EQ(*status_value, "OK");
}
TEST_F(OpenTelemetryPluginEnd2EndTest,
ClientAttemptSentTotalCompressedMessageSize) {
Init(std::move(Options().set_metric_names(
{grpc::OpenTelemetryPluginBuilder::
kClientAttemptSentTotalCompressedMessageSizeInstrumentName})));
SendRPC();
const char* kMetricName =
"grpc.client.attempt.sent_total_compressed_message_size";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data =
absl::get_if<opentelemetry::sdk::metrics::HistogramPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
ASSERT_EQ(point_data->count_, 1);
ASSERT_EQ(absl::get<int64_t>(point_data->max_), 5);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 3);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
const auto* target_value =
absl::get_if<std::string>(&attributes.at("grpc.target"));
ASSERT_NE(target_value, nullptr);
EXPECT_EQ(*target_value, canonical_server_address_);
const auto* status_value =
absl::get_if<std::string>(&attributes.at("grpc.status"));
ASSERT_NE(status_value, nullptr);
EXPECT_EQ(*status_value, "OK");
}
TEST_F(OpenTelemetryPluginEnd2EndTest,
ClientAttemptRcvdTotalCompressedMessageSize) {
Init(std::move(Options().set_metric_names(
{grpc::OpenTelemetryPluginBuilder::
kClientAttemptRcvdTotalCompressedMessageSizeInstrumentName})));
SendRPC();
const char* kMetricName =
"grpc.client.attempt.rcvd_total_compressed_message_size";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data =
absl::get_if<opentelemetry::sdk::metrics::HistogramPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
ASSERT_EQ(point_data->count_, 1);
ASSERT_EQ(absl::get<int64_t>(point_data->max_), 5);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 3);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
const auto* target_value =
absl::get_if<std::string>(&attributes.at("grpc.target"));
ASSERT_NE(target_value, nullptr);
EXPECT_EQ(*target_value, canonical_server_address_);
const auto* status_value =
absl::get_if<std::string>(&attributes.at("grpc.status"));
ASSERT_NE(status_value, nullptr);
EXPECT_EQ(*status_value, "OK");
}
TEST_F(OpenTelemetryPluginEnd2EndTest, ServerCallStarted) {
Init(std::move(Options().set_metric_names(
{grpc::OpenTelemetryPluginBuilder::kServerCallStartedInstrumentName})));
SendRPC();
const char* kMetricName = "grpc.server.call.started";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data = absl::get_if<opentelemetry::sdk::metrics::SumPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
auto server_started_value = absl::get_if<int64_t>(&point_data->value_);
ASSERT_NE(server_started_value, nullptr);
ASSERT_EQ(*server_started_value, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 1);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
}
TEST_F(OpenTelemetryPluginEnd2EndTest, ServerCallDuration) {
Init(std::move(Options().set_metric_names(
{grpc::OpenTelemetryPluginBuilder::kServerCallDurationInstrumentName})));
SendRPC();
const char* kMetricName = "grpc.server.call.duration";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data =
absl::get_if<opentelemetry::sdk::metrics::HistogramPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
ASSERT_EQ(point_data->count_, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
const auto* status_value =
absl::get_if<std::string>(&attributes.at("grpc.status"));
ASSERT_NE(status_value, nullptr);
EXPECT_EQ(*status_value, "OK");
}
TEST_F(OpenTelemetryPluginEnd2EndTest,
ServerCallSentTotalCompressedMessageSize) {
Init(std::move(Options().set_metric_names(
{grpc::OpenTelemetryPluginBuilder::
kServerCallSentTotalCompressedMessageSizeInstrumentName})));
SendRPC();
const char* kMetricName =
"grpc.server.call.sent_total_compressed_message_size";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data =
absl::get_if<opentelemetry::sdk::metrics::HistogramPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
EXPECT_EQ(point_data->count_, 1);
ASSERT_EQ(absl::get<int64_t>(point_data->max_), 5);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
const auto* status_value =
absl::get_if<std::string>(&attributes.at("grpc.status"));
ASSERT_NE(status_value, nullptr);
EXPECT_EQ(*status_value, "OK");
}
TEST_F(OpenTelemetryPluginEnd2EndTest,
ServerCallRcvdTotalCompressedMessageSize) {
Init(std::move(Options().set_metric_names(
{grpc::OpenTelemetryPluginBuilder::
kServerCallRcvdTotalCompressedMessageSizeInstrumentName})));
SendRPC();
const char* kMetricName =
"grpc.server.call.rcvd_total_compressed_message_size";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data =
absl::get_if<opentelemetry::sdk::metrics::HistogramPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
ASSERT_EQ(point_data->count_, 1);
ASSERT_EQ(absl::get<int64_t>(point_data->max_), 5);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
const auto* status_value =
absl::get_if<std::string>(&attributes.at("grpc.status"));
ASSERT_NE(status_value, nullptr);
EXPECT_EQ(*status_value, "OK");
}
// Make sure that no meter provider results in normal operations.
TEST_F(OpenTelemetryPluginEnd2EndTest, NoMeterProviderRegistered) {
Init(
std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName})
.set_use_meter_provider(false)));
SendRPC();
}
// Test that the otel plugin sees the expected channel target and default
// authority.
TEST_F(OpenTelemetryPluginEnd2EndTest, VerifyChannelScopeTargetAndAuthority) {
Init(std::move(
Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName})
.set_channel_scope_filter(
[&](const OpenTelemetryPluginBuilder::ChannelScope& scope) {
return scope.target() == canonical_server_address_ &&
scope.default_authority() == server_address_;
})));
SendRPC();
const char* kMetricName = "grpc.client.attempt.started";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
}
// Test that a channel scope filter returning true records metrics on the
// channel.
TEST_F(OpenTelemetryPluginEnd2EndTest, ChannelScopeFilterReturnsTrue) {
Init(std::move(
Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName})
.set_channel_scope_filter(
[](const OpenTelemetryPluginBuilder::ChannelScope& /*scope*/) {
return true;
})));
SendRPC();
const char* kMetricName = "grpc.client.attempt.started";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data = absl::get_if<opentelemetry::sdk::metrics::SumPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
auto client_started_value = absl::get_if<int64_t>(&point_data->value_);
ASSERT_NE(client_started_value, nullptr);
EXPECT_EQ(*client_started_value, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
const auto* target_value =
absl::get_if<std::string>(&attributes.at("grpc.target"));
ASSERT_NE(target_value, nullptr);
EXPECT_EQ(*target_value, canonical_server_address_);
}
// Test that a channel scope filter returning false does not record metrics on
// the channel.
TEST_F(OpenTelemetryPluginEnd2EndTest, ChannelScopeFilterReturnsFalse) {
Init(std::move(
Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName})
.set_channel_scope_filter(
[](const OpenTelemetryPluginBuilder::ChannelScope& /*scope*/) {
return false;
})));
SendRPC();
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
/*data*/) { return false; });
ASSERT_TRUE(data.empty());
}
// Test that a server selector returning true records metrics on the server.
TEST_F(OpenTelemetryPluginEnd2EndTest, ServerSelectorReturnsTrue) {
Init(std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kServerCallDurationInstrumentName})
.set_server_selector(
[](const grpc_core::ChannelArgs& /*channel_args*/) {
return true;
})));
SendRPC();
const char* kMetricName = "grpc.server.call.duration";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
const auto& server_attributes =
data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(server_attributes.size(), 2);
EXPECT_EQ(absl::get<std::string>(server_attributes.at("grpc.method")),
kMethodName);
EXPECT_EQ(absl::get<std::string>(server_attributes.at("grpc.status")), "OK");
}
// Test that a server selector returning false does not record metrics on the
// server.
TEST_F(OpenTelemetryPluginEnd2EndTest, ServerSelectorReturnsFalse) {
Init(std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kServerCallDurationInstrumentName})
.set_server_selector(
[](const grpc_core::ChannelArgs& /*channel_args*/) {
return false;
})));
SendRPC();
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
/*data*/) { return false; });
ASSERT_TRUE(data.empty());
}
// Test that a target attribute filter returning true records metrics with the
// target as is on the channel.
TEST_F(OpenTelemetryPluginEnd2EndTest, TargetAttributeFilterReturnsTrue) {
Init(
std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName})
.set_target_attribute_filter(
[](absl::string_view /*target*/) { return true; })));
SendRPC();
const char* kMetricName = "grpc.client.attempt.started";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data = absl::get_if<opentelemetry::sdk::metrics::SumPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
auto client_started_value = absl::get_if<int64_t>(&point_data->value_);
ASSERT_NE(client_started_value, nullptr);
EXPECT_EQ(*client_started_value, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
const auto* target_value =
absl::get_if<std::string>(&attributes.at("grpc.target"));
ASSERT_NE(target_value, nullptr);
EXPECT_EQ(*target_value, canonical_server_address_);
}
// Test that a target attribute filter returning false records metrics with the
// target as "other".
TEST_F(OpenTelemetryPluginEnd2EndTest, TargetAttributeFilterReturnsFalse) {
Init(
std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName})
.set_target_attribute_filter(
[](absl::string_view /*target*/) { return false; })));
SendRPC();
const char* kMetricName = "grpc.client.attempt.started";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
/*data*/) { return false; });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data = absl::get_if<opentelemetry::sdk::metrics::SumPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
auto client_started_value = absl::get_if<int64_t>(&point_data->value_);
ASSERT_NE(client_started_value, nullptr);
EXPECT_EQ(*client_started_value, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kMethodName);
const auto* target_value =
absl::get_if<std::string>(&attributes.at("grpc.target"));
ASSERT_NE(target_value, nullptr);
EXPECT_EQ(*target_value, "other");
}
// Test that generic method names are scrubbed properly on the client side.
TEST_F(OpenTelemetryPluginEnd2EndTest, GenericClientRpc) {
Init(std::move(
Options().set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName})));
SendGenericRPC();
const char* kMetricName = "grpc.client.attempt.started";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
/*data*/) { return false; });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data = absl::get_if<opentelemetry::sdk::metrics::SumPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
auto client_started_value = absl::get_if<int64_t>(&point_data->value_);
ASSERT_NE(client_started_value, nullptr);
EXPECT_EQ(*client_started_value, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, "other");
const auto* target_value =
absl::get_if<std::string>(&attributes.at("grpc.target"));
ASSERT_NE(target_value, nullptr);
EXPECT_EQ(*target_value, canonical_server_address_);
}
// Test that generic method names are scrubbed properly on the client side if
// the method attribute filter is set and it returns false.
TEST_F(OpenTelemetryPluginEnd2EndTest,
GenericClientRpcWithMethodAttributeFilterReturningFalse) {
Init(std::move(
Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName})
.set_generic_method_attribute_filter(
[](absl::string_view /*generic_method*/) { return false; })));
SendGenericRPC();
const char* kMetricName = "grpc.client.attempt.started";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
/*data*/) { return false; });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data = absl::get_if<opentelemetry::sdk::metrics::SumPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
auto client_started_value = absl::get_if<int64_t>(&point_data->value_);
ASSERT_NE(client_started_value, nullptr);
EXPECT_EQ(*client_started_value, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, "other");
const auto* target_value =
absl::get_if<std::string>(&attributes.at("grpc.target"));
ASSERT_NE(target_value, nullptr);
EXPECT_EQ(*target_value, canonical_server_address_);
}
// Test that generic method names is not scrubbed on the client side if
// the method attribute filter is set and it returns true.
TEST_F(OpenTelemetryPluginEnd2EndTest,
GenericClientRpcWithMethodAttributeFilterReturningTrue) {
Init(std::move(
Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName})
.set_generic_method_attribute_filter(
[](absl::string_view /*generic_method*/) { return true; })));
SendGenericRPC();
const char* kMetricName = "grpc.client.attempt.started";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
/*data*/) { return false; });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data = absl::get_if<opentelemetry::sdk::metrics::SumPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
auto client_started_value = absl::get_if<int64_t>(&point_data->value_);
ASSERT_NE(client_started_value, nullptr);
EXPECT_EQ(*client_started_value, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kGenericMethodName);
const auto* target_value =
absl::get_if<std::string>(&attributes.at("grpc.target"));
ASSERT_NE(target_value, nullptr);
EXPECT_EQ(*target_value, canonical_server_address_);
}
// Test that generic method names are scrubbed properly on the server side.
TEST_F(OpenTelemetryPluginEnd2EndTest, GenericServerRpc) {
Init(std::move(Options().set_metric_names(
{grpc::OpenTelemetryPluginBuilder::kServerCallDurationInstrumentName})));
SendGenericRPC();
const char* kMetricName = "grpc.server.call.duration";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data =
absl::get_if<opentelemetry::sdk::metrics::HistogramPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
ASSERT_EQ(point_data->count_, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, "other");
const auto* status_value =
absl::get_if<std::string>(&attributes.at("grpc.status"));
ASSERT_NE(status_value, nullptr);
EXPECT_EQ(*status_value, "UNIMPLEMENTED");
}
// Test that generic method names are scrubbed properly on the server side if
// the method attribute filter is set and it returns false.
TEST_F(OpenTelemetryPluginEnd2EndTest,
GenericServerRpcWithMethodAttributeFilterReturningFalse) {
Init(std::move(
Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kServerCallDurationInstrumentName})
.set_generic_method_attribute_filter(
[](absl::string_view /*generic_method*/) { return false; })));
SendGenericRPC();
const char* kMetricName = "grpc.server.call.duration";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data =
absl::get_if<opentelemetry::sdk::metrics::HistogramPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
ASSERT_EQ(point_data->count_, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, "other");
const auto* status_value =
absl::get_if<std::string>(&attributes.at("grpc.status"));
ASSERT_NE(status_value, nullptr);
EXPECT_EQ(*status_value, "UNIMPLEMENTED");
}
// Test that generic method names are not scrubbed on the server side if
// the method attribute filter is set and it returns true.
TEST_F(OpenTelemetryPluginEnd2EndTest,
GenericServerRpcWithMethodAttributeFilterReturningTrue) {
Init(std::move(
Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kServerCallDurationInstrumentName})
.set_generic_method_attribute_filter(
[](absl::string_view /*generic_method*/) { return true; })));
SendGenericRPC();
const char* kMetricName = "grpc.server.call.duration";
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
ASSERT_EQ(data[kMetricName].size(), 1);
auto point_data =
absl::get_if<opentelemetry::sdk::metrics::HistogramPointData>(
&data[kMetricName][0].point_data);
ASSERT_NE(point_data, nullptr);
ASSERT_EQ(point_data->count_, 1);
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 2);
const auto* method_value =
absl::get_if<std::string>(&attributes.at("grpc.method"));
ASSERT_NE(method_value, nullptr);
EXPECT_EQ(*method_value, kGenericMethodName);
const auto* status_value =
absl::get_if<std::string>(&attributes.at("grpc.status"));
ASSERT_NE(status_value, nullptr);
EXPECT_EQ(*status_value, "UNIMPLEMENTED");
}
TEST_F(OpenTelemetryPluginEnd2EndTest, OptionalPerCallLocalityLabel) {
Init(
std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName,
grpc::OpenTelemetryPluginBuilder::
kClientAttemptDurationInstrumentName,
grpc::OpenTelemetryPluginBuilder::
kServerCallStartedInstrumentName,
grpc::OpenTelemetryPluginBuilder::
kServerCallDurationInstrumentName})
.add_optional_label("grpc.lb.locality")
.set_labels_to_inject(
{{grpc_core::ClientCallTracer::CallAttemptTracer::
OptionalLabelKey::kLocality,
grpc_core::RefCountedStringValue("locality")}})));
SendRPC();
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) {
return !data.contains("grpc.client.attempt.started") ||
!data.contains("grpc.client.attempt.duration") ||
!data.contains("grpc.server.call.started") ||
!data.contains("grpc.server.call.duration");
});
// Verify client side metric (grpc.client.attempt.started) does not sees this
// label
ASSERT_EQ(data["grpc.client.attempt.started"].size(), 1);
const auto& client_attributes =
data["grpc.client.attempt.started"][0].attributes.GetAttributes();
EXPECT_THAT(
client_attributes,
::testing::Not(::testing::Contains(::testing::Key("grpc.lb.locality"))));
// Verify client side metric (grpc.client.attempt.duration) sees this label.
ASSERT_EQ(data["grpc.client.attempt.duration"].size(), 1);
const auto& client_duration_attributes =
data["grpc.client.attempt.duration"][0].attributes.GetAttributes();
EXPECT_EQ(
absl::get<std::string>(client_duration_attributes.at("grpc.lb.locality")),
"locality");
// Verify server metric (grpc.server.call.started) does not see this label
ASSERT_EQ(data["grpc.server.call.started"].size(), 1);
const auto& server_attributes =
data["grpc.server.call.started"][0].attributes.GetAttributes();
EXPECT_THAT(
server_attributes,
::testing::Not(::testing::Contains(::testing::Key("grpc.lb.locality"))));
// Verify server metric (grpc.server.call.duration) does not see this label
ASSERT_EQ(data["grpc.server.call.duration"].size(), 1);
const auto& server_duration_attributes =
data["grpc.server.call.duration"][0].attributes.GetAttributes();
EXPECT_THAT(
server_duration_attributes,
::testing::Not(::testing::Contains(::testing::Key("grpc.lb.locality"))));
}
// Tests that when locality label is enabled on the plugin but not provided by
// gRPC, an empty value is recorded.
TEST_F(OpenTelemetryPluginEnd2EndTest,
OptionalPerCallLocalityLabelWhenNotAvailable) {
Init(std::move(
Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptDurationInstrumentName})
.add_optional_label("grpc.lb.locality")));
SendRPC();
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains("grpc.client.attempt.duration"); });
// Verify client side metric (grpc.client.attempt.duration) sees the empty
// label value.
ASSERT_EQ(data["grpc.client.attempt.duration"].size(), 1);
const auto& client_duration_attributes =
data["grpc.client.attempt.duration"][0].attributes.GetAttributes();
EXPECT_EQ(
absl::get<std::string>(client_duration_attributes.at("grpc.lb.locality")),
"");
}
// Tests that when locality label is injected but not enabled by the plugin, the
// label is not recorded.
TEST_F(OpenTelemetryPluginEnd2EndTest,
OptionalPerCallLocalityLabelNotRecordedWhenNotEnabled) {
Init(std::move(
Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptDurationInstrumentName})
.set_labels_to_inject(
{{grpc_core::ClientCallTracer::CallAttemptTracer::
OptionalLabelKey::kLocality,
grpc_core::RefCountedStringValue("locality")}})));
SendRPC();
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains("grpc.client.attempt.duration"); });
// Verify client side metric (grpc.client.attempt.duration) does not see the
// locality label.
ASSERT_EQ(data["grpc.client.attempt.duration"].size(), 1);
const auto& client_duration_attributes =
data["grpc.client.attempt.duration"][0].attributes.GetAttributes();
EXPECT_THAT(
client_duration_attributes,
::testing::Not(::testing::Contains(::testing::Key("grpc.lb.locality"))));
}
TEST_F(OpenTelemetryPluginEnd2EndTest,
UnknownLabelDoesNotShowOnPerCallMetrics) {
Init(
std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptStartedInstrumentName,
grpc::OpenTelemetryPluginBuilder::
kClientAttemptDurationInstrumentName,
grpc::OpenTelemetryPluginBuilder::
kServerCallStartedInstrumentName,
grpc::OpenTelemetryPluginBuilder::
kServerCallDurationInstrumentName})
.add_optional_label("unknown")));
SendRPC();
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) {
return !data.contains("grpc.client.attempt.started") ||
!data.contains("grpc.client.attempt.duration") ||
!data.contains("grpc.server.call.started") ||
!data.contains("grpc.server.call.duration");
});
// Verify client side metric (grpc.client.attempt.started) does not sees this
// label
ASSERT_EQ(data["grpc.client.attempt.started"].size(), 1);
const auto& client_attributes =
data["grpc.client.attempt.started"][0].attributes.GetAttributes();
EXPECT_THAT(client_attributes,
::testing::Not(::testing::Contains(::testing::Key("unknown"))));
// Verify client side metric (grpc.client.attempt.duration) does not see this
// label
ASSERT_EQ(data["grpc.client.attempt.duration"].size(), 1);
const auto& client_duration_attributes =
data["grpc.client.attempt.duration"][0].attributes.GetAttributes();
EXPECT_THAT(client_duration_attributes,
::testing::Not(::testing::Contains(::testing::Key("unknown"))));
// Verify server metric (grpc.server.call.started) does not see this label
ASSERT_EQ(data["grpc.server.call.started"].size(), 1);
const auto& server_attributes =
data["grpc.server.call.started"][0].attributes.GetAttributes();
EXPECT_THAT(
server_attributes,
::testing::Not(::testing::Contains(::testing::Key("grpc.lb.locality"))));
// Verify server metric (grpc.server.call.duration) does not see this label
ASSERT_EQ(data["grpc.server.call.duration"].size(), 1);
const auto& server_duration_attributes =
data["grpc.server.call.duration"][0].attributes.GetAttributes();
EXPECT_THAT(server_duration_attributes,
::testing::Not(::testing::Contains(::testing::Key("unknown"))));
}
using OpenTelemetryPluginOptionEnd2EndTest = OpenTelemetryPluginEnd2EndTest;
class SimpleLabelIterable : public grpc::internal::LabelsIterable {
public:
explicit SimpleLabelIterable(
std::pair<absl::string_view, absl::string_view> label)
: label_(label) {}
absl::optional<std::pair<absl::string_view, absl::string_view>> Next()
override {
if (iterated_) {
return absl::nullopt;
}
iterated_ = true;
return label_;
}
size_t Size() const override { return 1; }
void ResetIteratorPosition() override { iterated_ = false; }
private:
bool iterated_ = false;
std::pair<absl::string_view, absl::string_view> label_;
};
class CustomLabelInjector : public grpc::internal::LabelsInjector {
public:
explicit CustomLabelInjector(std::pair<std::string, std::string> label)
: label_(std::move(label)) {}
~CustomLabelInjector() override {}
std::unique_ptr<grpc::internal::LabelsIterable> GetLabels(
grpc_metadata_batch* /*incoming_initial_metadata*/) const override {
return std::make_unique<SimpleLabelIterable>(label_);
}
void AddLabels(
grpc_metadata_batch* /*outgoing_initial_metadata*/,
grpc::internal::LabelsIterable* /*labels_from_incoming_metadata*/)
const override {}
bool AddOptionalLabels(bool /*is_client*/,
absl::Span<const grpc_core::RefCountedStringValue>
/*optional_labels*/,
opentelemetry::nostd::function_ref<
bool(opentelemetry::nostd::string_view,
opentelemetry::common::AttributeValue)>
/*callback*/) const override {
return true;
}
size_t GetOptionalLabelsSize(
bool /*is_client*/, absl::Span<const grpc_core::RefCountedStringValue>
/*optional_labels_span*/) const override {
return 0;
}
private:
std::pair<std::string, std::string> label_;
};
class CustomPluginOption
: public grpc::internal::InternalOpenTelemetryPluginOption {
public:
CustomPluginOption(bool enabled_on_client, bool enabled_on_server,
std::pair<std::string, std::string> label)
: enabled_on_client_(enabled_on_client),
enabled_on_server_(enabled_on_server),
label_injector_(
std::make_unique<CustomLabelInjector>(std::move(label))) {}
~CustomPluginOption() override {}
bool IsActiveOnClientChannel(absl::string_view /*target*/) const override {
return enabled_on_client_;
}
bool IsActiveOnServer(const grpc_core::ChannelArgs& /*args*/) const override {
return enabled_on_server_;
}
const grpc::internal::LabelsInjector* labels_injector() const override {
return label_injector_.get();
}
private:
bool enabled_on_client_;
bool enabled_on_server_;
std::unique_ptr<CustomLabelInjector> label_injector_;
};
TEST_F(OpenTelemetryPluginOptionEnd2EndTest, Basic) {
Init(
std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptDurationInstrumentName,
grpc::OpenTelemetryPluginBuilder::
kServerCallDurationInstrumentName})
.add_plugin_option(std::make_unique<CustomPluginOption>(
/*enabled_on_client*/ true, /*enabled_on_server*/ true,
std::make_pair("key", "value")))));
SendRPC();
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) {
return !data.contains("grpc.client.attempt.duration") ||
!data.contains("grpc.server.call.duration");
});
// Verify client side metric
ASSERT_EQ(data["grpc.client.attempt.duration"].size(), 1);
const auto& client_attributes =
data["grpc.client.attempt.duration"][0].attributes.GetAttributes();
EXPECT_EQ(client_attributes.size(), 4);
EXPECT_EQ(absl::get<std::string>(client_attributes.at("key")), "value");
// Verify server side metric
ASSERT_EQ(data["grpc.server.call.duration"].size(), 1);
const auto& server_attributes =
data["grpc.server.call.duration"][0].attributes.GetAttributes();
EXPECT_EQ(server_attributes.size(), 3);
EXPECT_EQ(absl::get<std::string>(server_attributes.at("key")), "value");
}
TEST_F(OpenTelemetryPluginOptionEnd2EndTest, ClientOnlyPluginOption) {
Init(
std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptDurationInstrumentName,
grpc::OpenTelemetryPluginBuilder::
kServerCallDurationInstrumentName})
.add_plugin_option(std::make_unique<CustomPluginOption>(
/*enabled_on_client*/ true, /*enabled_on_server*/ false,
std::make_pair("key", "value")))));
SendRPC();
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) {
return !data.contains("grpc.client.attempt.duration") ||
!data.contains("grpc.server.call.duration");
});
// Verify client side metric
ASSERT_EQ(data["grpc.client.attempt.duration"].size(), 1);
const auto& client_attributes =
data["grpc.client.attempt.duration"][0].attributes.GetAttributes();
EXPECT_EQ(client_attributes.size(), 4);
EXPECT_EQ(absl::get<std::string>(client_attributes.at("key")), "value");
// Verify server side metric
ASSERT_EQ(data["grpc.server.call.duration"].size(), 1);
const auto& server_attributes =
data["grpc.server.call.duration"][0].attributes.GetAttributes();
EXPECT_EQ(server_attributes.size(), 2);
EXPECT_THAT(server_attributes,
::testing::Not(::testing::Contains(::testing::Key("key"))));
}
TEST_F(OpenTelemetryPluginOptionEnd2EndTest, ServerOnlyPluginOption) {
Init(
std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptDurationInstrumentName,
grpc::OpenTelemetryPluginBuilder::
kServerCallDurationInstrumentName})
.add_plugin_option(std::make_unique<CustomPluginOption>(
/*enabled_on_client*/ false, /*enabled_on_server*/ true,
std::make_pair("key", "value")))));
SendRPC();
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) {
return !data.contains("grpc.client.attempt.duration") ||
!data.contains("grpc.server.call.duration");
});
// Verify client side metric
ASSERT_EQ(data["grpc.client.attempt.duration"].size(), 1);
const auto& attributes =
data["grpc.client.attempt.duration"][0].attributes.GetAttributes();
EXPECT_EQ(attributes.size(), 3);
EXPECT_THAT(attributes,
::testing::Not(::testing::Contains(::testing::Key("key"))));
// Verify server side metric
ASSERT_EQ(data["grpc.server.call.duration"].size(), 1);
const auto& server_attributes =
data["grpc.server.call.duration"][0].attributes.GetAttributes();
EXPECT_EQ(server_attributes.size(), 3);
EXPECT_EQ(absl::get<std::string>(server_attributes.at("key")), "value");
}
TEST_F(OpenTelemetryPluginOptionEnd2EndTest,
MultipleEnabledAndDisabledPluginOptions) {
Init(
std::move(Options()
.set_metric_names({grpc::OpenTelemetryPluginBuilder::
kClientAttemptDurationInstrumentName,
grpc::OpenTelemetryPluginBuilder::
kServerCallDurationInstrumentName})
.add_plugin_option(std::make_unique<CustomPluginOption>(
/*enabled_on_client*/ true, /*enabled_on_server*/ true,
std::make_pair("key1", "value1")))
.add_plugin_option(std::make_unique<CustomPluginOption>(
/*enabled_on_client*/ true, /*enabled_on_server*/ false,
std::make_pair("key2", "value2")))
.add_plugin_option(std::make_unique<CustomPluginOption>(
/*enabled_on_client*/ true, /*enabled_on_server*/ false,
std::make_pair("key3", "value3")))
.add_plugin_option(std::make_unique<CustomPluginOption>(
/*enabled_on_client*/ false, /*enabled_on_server*/ true,
std::make_pair("key4", "value4")))
.add_plugin_option(std::make_unique<CustomPluginOption>(
/*enabled_on_client*/ false, /*enabled_on_server*/ true,
std::make_pair("key5", "value5")))));
SendRPC();
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) {
return !data.contains("grpc.client.attempt.duration") ||
!data.contains("grpc.server.call.duration");
});
// Verify client side metric
ASSERT_EQ(data["grpc.client.attempt.duration"].size(), 1);
const auto& client_attributes =
data["grpc.client.attempt.duration"][0].attributes.GetAttributes();
EXPECT_EQ(client_attributes.size(), 6);
EXPECT_EQ(absl::get<std::string>(client_attributes.at("key1")), "value1");
EXPECT_EQ(absl::get<std::string>(client_attributes.at("key2")), "value2");
EXPECT_EQ(absl::get<std::string>(client_attributes.at("key3")), "value3");
EXPECT_THAT(client_attributes,
::testing::Not(::testing::Contains(::testing::Key("key4"))));
EXPECT_THAT(client_attributes,
::testing::Not(::testing::Contains(::testing::Key("key5"))));
// Verify server side metric
ASSERT_EQ(data["grpc.server.call.duration"].size(), 1);
const auto& server_attributes =
data["grpc.server.call.duration"][0].attributes.GetAttributes();
EXPECT_EQ(server_attributes.size(), 5);
EXPECT_EQ(absl::get<std::string>(server_attributes.at("key1")), "value1");
EXPECT_THAT(server_attributes,
::testing::Not(::testing::Contains(::testing::Key("key2"))));
EXPECT_THAT(server_attributes,
::testing::Not(::testing::Contains(::testing::Key("key3"))));
EXPECT_EQ(absl::get<std::string>(server_attributes.at("key4")), "value4");
EXPECT_EQ(absl::get<std::string>(server_attributes.at("key5")), "value5");
}
class OpenTelemetryPluginNPCMetricsTest
: public OpenTelemetryPluginEnd2EndTest {
protected:
void TearDown() override {
// We are tearing down OpenTelemetryPluginEnd2EndTest first to ensure that
// gRPC has shutdown before we reset the instruments registry.
OpenTelemetryPluginEnd2EndTest::TearDown();
grpc_core::GlobalInstrumentsRegistryTestPeer::
ResetGlobalInstrumentsRegistry();
}
};
TEST_F(OpenTelemetryPluginNPCMetricsTest, RecordUInt64Counter) {
constexpr absl::string_view kMetricName = "uint64_counter";
constexpr uint64_t kCounterValues[] = {1, 2, 3};
constexpr int64_t kCounterResult = 6;
constexpr std::array<absl::string_view, 2> kLabelKeys = {"label_key_1",
"label_key_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelKeys = {
"optional_label_key_1", "optional_label_key_2"};
constexpr std::array<absl::string_view, 2> kLabelValues = {"label_value_1",
"label_value_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelValues = {
"optional_label_value_1", "optional_label_value_2"};
auto handle =
grpc_core::GlobalInstrumentsRegistry::RegisterUInt64Counter(
kMetricName, "A simple uint64 counter.", "unit",
/*enable_by_default=*/true)
.Labels(kLabelKeys[0], kLabelKeys[1])
.OptionalLabels(kOptionalLabelKeys[0], kOptionalLabelKeys[1])
.Build();
Init(std::move(Options()
.set_metric_names({kMetricName})
.set_channel_scope_filter(
[](const OpenTelemetryPluginBuilder::ChannelScope&
channel_scope) {
return absl::StartsWith(channel_scope.target(),
"dns:///");
})
.add_optional_label(kOptionalLabelKeys[0])
.add_optional_label(kOptionalLabelKeys[1])));
auto stats_plugins =
grpc_core::GlobalStatsPluginRegistry::GetStatsPluginsForChannel(
grpc_core::experimental::StatsPluginChannelScope(
"dns:///localhost:8080", ""));
for (auto v : kCounterValues) {
stats_plugins.AddCounter(handle, v, kLabelValues, kOptionalLabelValues);
}
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
EXPECT_THAT(data,
::testing::ElementsAre(::testing::Pair(
kMetricName,
::testing::ElementsAre(::testing::AllOf(
AttributesEq(kLabelKeys, kLabelValues, kOptionalLabelKeys,
kOptionalLabelValues),
CounterResultEq(::testing::Eq(kCounterResult)))))));
}
TEST_F(OpenTelemetryPluginNPCMetricsTest, RecordDoubleCounter) {
constexpr absl::string_view kMetricName = "double_counter";
constexpr double kCounterValues[] = {1.23, 2.34, 3.45};
constexpr double kCounterResult = 7.02;
constexpr std::array<absl::string_view, 2> kLabelKeys = {"label_key_1",
"label_key_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelKeys = {
"optional_label_key_1", "optional_label_key_2"};
constexpr std::array<absl::string_view, 2> kLabelValues = {"label_value_1",
"label_value_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelValues = {
"optional_label_value_1", "optional_label_value_2"};
auto handle =
grpc_core::GlobalInstrumentsRegistry::RegisterDoubleCounter(
kMetricName, "A simple double counter.", "unit",
/*enable_by_default=*/false)
.Labels(kLabelKeys[0], kLabelKeys[1])
.OptionalLabels(kOptionalLabelKeys[0], kOptionalLabelKeys[1])
.Build();
Init(std::move(Options()
.set_metric_names({kMetricName})
.set_channel_scope_filter(
[](const OpenTelemetryPluginBuilder::ChannelScope&
channel_scope) {
return absl::StartsWith(channel_scope.target(),
"dns:///");
})
.add_optional_label(kOptionalLabelKeys[0])
.add_optional_label(kOptionalLabelKeys[1])));
auto stats_plugins =
grpc_core::GlobalStatsPluginRegistry::GetStatsPluginsForChannel(
grpc_core::experimental::StatsPluginChannelScope(
"dns:///localhost:8080", ""));
for (auto v : kCounterValues) {
stats_plugins.AddCounter(handle, v, kLabelValues, kOptionalLabelValues);
}
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
EXPECT_THAT(data,
::testing::ElementsAre(::testing::Pair(
kMetricName,
::testing::ElementsAre(::testing::AllOf(
AttributesEq(kLabelKeys, kLabelValues, kOptionalLabelKeys,
kOptionalLabelValues),
CounterResultEq(::testing::DoubleEq(kCounterResult)))))));
}
TEST_F(OpenTelemetryPluginNPCMetricsTest, RecordUInt64Histogram) {
constexpr absl::string_view kMetricName = "uint64_histogram";
constexpr uint64_t kHistogramValues[] = {1, 1, 2, 3, 4, 4, 5, 6};
constexpr int64_t kSum = 26;
constexpr int64_t kMin = 1;
constexpr int64_t kMax = 6;
constexpr int64_t kCount = 8;
constexpr std::array<absl::string_view, 2> kLabelKeys = {"label_key_1",
"label_key_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelKeys = {
"optional_label_key_1", "optional_label_key_2"};
constexpr std::array<absl::string_view, 2> kLabelValues = {"label_value_1",
"label_value_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelValues = {
"optional_label_value_1", "optional_label_value_2"};
auto handle =
grpc_core::GlobalInstrumentsRegistry::RegisterUInt64Histogram(
kMetricName, "A simple uint64 histogram.", "unit",
/*enable_by_default=*/true)
.Labels(kLabelKeys[0], kLabelKeys[1])
.OptionalLabels(kOptionalLabelKeys[0], kOptionalLabelKeys[1])
.Build();
Init(std::move(
Options()
.set_metric_names({kMetricName})
.set_server_selector([](const grpc_core::ChannelArgs& args) {
return args.GetString(GRPC_ARG_SERVER_SELECTOR_KEY) ==
GRPC_ARG_SERVER_SELECTOR_VALUE;
})
.add_optional_label(kOptionalLabelKeys[0])
.add_optional_label(kOptionalLabelKeys[1])));
grpc_core::ChannelArgs args;
args = args.Set(GRPC_ARG_SERVER_SELECTOR_KEY, GRPC_ARG_SERVER_SELECTOR_VALUE);
auto stats_plugins =
grpc_core::GlobalStatsPluginRegistry::GetStatsPluginsForServer(args);
for (auto v : kHistogramValues) {
stats_plugins.RecordHistogram(handle, v, kLabelValues,
kOptionalLabelValues);
}
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
EXPECT_THAT(
data, ::testing::ElementsAre(::testing::Pair(
kMetricName,
::testing::ElementsAre(::testing::AllOf(
AttributesEq(kLabelKeys, kLabelValues, kOptionalLabelKeys,
kOptionalLabelValues),
HistogramResultEq(::testing::Eq(kSum), ::testing::Eq(kMin),
::testing::Eq(kMax), kCount))))));
}
TEST_F(OpenTelemetryPluginNPCMetricsTest, RecordDoubleHistogram) {
constexpr absl::string_view kMetricName = "double_histogram";
constexpr double kHistogramValues[] = {1.1, 1.2, 2.2, 3.3,
4.4, 4.5, 5.5, 6.6};
constexpr double kSum = 28.8;
constexpr double kMin = 1.1;
constexpr double kMax = 6.6;
constexpr double kCount = 8;
constexpr std::array<absl::string_view, 2> kLabelKeys = {"label_key_1",
"label_key_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelKeys = {
"optional_label_key_1", "optional_label_key_2"};
constexpr std::array<absl::string_view, 2> kLabelValues = {"label_value_1",
"label_value_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelValues = {
"optional_label_value_1", "optional_label_value_2"};
auto handle =
grpc_core::GlobalInstrumentsRegistry::RegisterDoubleHistogram(
kMetricName, "A simple double histogram.", "unit",
/*enable_by_default=*/true)
.Labels(kLabelKeys[0], kLabelKeys[1])
.OptionalLabels(kOptionalLabelKeys[0], kOptionalLabelKeys[1])
.Build();
Init(std::move(
Options()
.set_metric_names({kMetricName})
.set_server_selector([](const grpc_core::ChannelArgs& args) {
return args.GetString(GRPC_ARG_SERVER_SELECTOR_KEY) ==
GRPC_ARG_SERVER_SELECTOR_VALUE;
})
.add_optional_label(kOptionalLabelKeys[0])
.add_optional_label(kOptionalLabelKeys[1])));
grpc_core::ChannelArgs args;
args = args.Set(GRPC_ARG_SERVER_SELECTOR_KEY, GRPC_ARG_SERVER_SELECTOR_VALUE);
auto stats_plugins =
grpc_core::GlobalStatsPluginRegistry::GetStatsPluginsForServer(args);
for (auto v : kHistogramValues) {
stats_plugins.RecordHistogram(handle, v, kLabelValues,
kOptionalLabelValues);
}
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
EXPECT_THAT(data,
::testing::ElementsAre(::testing::Pair(
kMetricName,
::testing::ElementsAre(::testing::AllOf(
AttributesEq(kLabelKeys, kLabelValues, kOptionalLabelKeys,
kOptionalLabelValues),
HistogramResultEq(::testing::DoubleEq(kSum),
::testing::DoubleEq(kMin),
::testing::DoubleEq(kMax), kCount))))));
}
TEST_F(OpenTelemetryPluginNPCMetricsTest,
RegisterMultipleOpenTelemetryPlugins) {
constexpr absl::string_view kMetricName = "yet_another_double_histogram";
constexpr std::array<absl::string_view, 2> kLabelKeys = {"label_key_1",
"label_key_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelKeys = {
"optional_label_key_1", "optional_label_key_2"};
constexpr std::array<absl::string_view, 2> kLabelValues = {"label_value_1",
"label_value_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelValues = {
"optional_label_value_1", "optional_label_value_2"};
auto handle =
grpc_core::GlobalInstrumentsRegistry::RegisterDoubleHistogram(
kMetricName, "A simple double histogram.", "unit",
/*enable_by_default=*/true)
.Labels(kLabelKeys[0], kLabelKeys[1])
.OptionalLabels(kOptionalLabelKeys[0], kOptionalLabelKeys[1])
.Build();
// Build and register a separate OpenTelemetryPlugin and verify its histogram
// recording.
grpc::internal::OpenTelemetryPluginBuilderImpl ot_builder;
auto reader = BuildAndRegisterOpenTelemetryPlugin(std::move(
Options()
.set_metric_names({kMetricName})
.set_server_selector([](const grpc_core::ChannelArgs& args) {
return args.GetString(GRPC_ARG_SERVER_SELECTOR_KEY) ==
GRPC_ARG_SERVER_SELECTOR_VALUE;
})
.add_optional_label(kOptionalLabelKeys[0])
.add_optional_label(kOptionalLabelKeys[1])));
EXPECT_EQ(ot_builder.BuildAndRegisterGlobal(), absl::OkStatus());
grpc_core::ChannelArgs args;
args = args.Set(GRPC_ARG_SERVER_SELECTOR_KEY, GRPC_ARG_SERVER_SELECTOR_VALUE);
{
constexpr double kHistogramValues[] = {1.23, 2.34, 3.45, 4.56};
constexpr double kSum = 11.58;
constexpr double kMin = 1.23;
constexpr double kMax = 4.56;
constexpr int kCount = 4;
auto stats_plugins =
grpc_core::GlobalStatsPluginRegistry::GetStatsPluginsForServer(args);
for (auto v : kHistogramValues) {
stats_plugins.RecordHistogram(handle, v, kLabelValues,
kOptionalLabelValues);
}
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); },
reader.get());
EXPECT_THAT(
data, ::testing::ElementsAre(::testing::Pair(
kMetricName,
::testing::ElementsAre(::testing::AllOf(
AttributesEq(kLabelKeys, kLabelValues, kOptionalLabelKeys,
kOptionalLabelValues),
HistogramResultEq(::testing::DoubleEq(kSum),
::testing::DoubleEq(kMin),
::testing::DoubleEq(kMax), kCount))))));
}
// Now build and register another OpenTelemetryPlugin using the test fixture
// and record histogram.
constexpr double kHistogramValues[] = {1.1, 1.2, 2.2, 3.3,
4.4, 4.5, 5.5, 6.6};
constexpr double kSum = 28.8;
constexpr double kMin = 1.1;
constexpr double kMax = 6.6;
constexpr int kCount = 8;
Init(std::move(
Options()
.set_metric_names({kMetricName})
.set_server_selector([](const grpc_core::ChannelArgs& args) {
return args.GetString(GRPC_ARG_SERVER_SELECTOR_KEY) ==
GRPC_ARG_SERVER_SELECTOR_VALUE;
})
.add_optional_label(kOptionalLabelKeys[0])
.add_optional_label(kOptionalLabelKeys[1])));
auto stats_plugins =
grpc_core::GlobalStatsPluginRegistry::GetStatsPluginsForServer(args);
for (auto v : kHistogramValues) {
stats_plugins.RecordHistogram(handle, v, kLabelValues,
kOptionalLabelValues);
}
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
EXPECT_THAT(data,
::testing::ElementsAre(::testing::Pair(
kMetricName,
::testing::ElementsAre(::testing::AllOf(
AttributesEq(kLabelKeys, kLabelValues, kOptionalLabelKeys,
kOptionalLabelValues),
HistogramResultEq(::testing::DoubleEq(kSum),
::testing::DoubleEq(kMin),
::testing::DoubleEq(kMax), kCount))))));
// Verify that the first plugin gets the data as well.
data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); },
reader.get());
EXPECT_THAT(data,
::testing::ElementsAre(::testing::Pair(
kMetricName,
::testing::ElementsAre(::testing::AllOf(
AttributesEq(kLabelKeys, kLabelValues, kOptionalLabelKeys,
kOptionalLabelValues),
HistogramResultEq(::testing::DoubleEq(kSum),
::testing::DoubleEq(kMin),
::testing::DoubleEq(kMax), kCount))))));
}
TEST_F(OpenTelemetryPluginNPCMetricsTest,
DisabledOptionalLabelKeysShouldNotBeRecorded) {
constexpr absl::string_view kMetricName =
"yet_another_yet_another_double_histogram";
constexpr double kHistogramValues[] = {1.1, 1.2, 2.2, 3.3,
4.4, 4.5, 5.5, 6.6};
constexpr double kSum = 28.8;
constexpr double kMin = 1.1;
constexpr double kMax = 6.6;
constexpr double kCount = 8;
constexpr std::array<absl::string_view, 2> kLabelKeys = {"label_key_1",
"label_key_2"};
constexpr std::array<absl::string_view, 4> kOptionalLabelKeys = {
"optional_label_key_1", "optional_label_key_2", "optional_label_key_3",
"optional_label_key_4"};
constexpr std::array<absl::string_view, 3> kActualOptionalLabelKeys = {
"optional_label_key_1", "optional_label_key_2", "optional_label_key_4"};
constexpr std::array<absl::string_view, 2> kLabelValues = {"label_value_1",
"label_value_2"};
constexpr std::array<absl::string_view, 4> kOptionalLabelValues = {
"optional_label_value_1", "optional_label_value_2",
"optional_label_value_3", "optional_label_value_4"};
constexpr std::array<absl::string_view, 3> kActualOptionalLabelValues = {
"optional_label_value_1", "optional_label_value_2",
"optional_label_value_4"};
auto handle =
grpc_core::GlobalInstrumentsRegistry::RegisterDoubleHistogram(
kMetricName, "A simple double histogram.", "unit",
/*enable_by_default=*/true)
.Labels(kLabelKeys[0], kLabelKeys[1])
.OptionalLabels(kOptionalLabelKeys[0], kOptionalLabelKeys[1],
kOptionalLabelKeys[2], kOptionalLabelKeys[3])
.Build();
Init(std::move(
Options()
.set_metric_names({kMetricName})
.set_server_selector([](const grpc_core::ChannelArgs& args) {
return args.GetString(GRPC_ARG_SERVER_SELECTOR_KEY) ==
GRPC_ARG_SERVER_SELECTOR_VALUE;
})
.add_optional_label(kOptionalLabelKeys[0])
.add_optional_label(kOptionalLabelKeys[1])
.add_optional_label(kOptionalLabelKeys[3])));
grpc_core::ChannelArgs args;
args = args.Set(GRPC_ARG_SERVER_SELECTOR_KEY, GRPC_ARG_SERVER_SELECTOR_VALUE);
auto stats_plugins =
grpc_core::GlobalStatsPluginRegistry::GetStatsPluginsForServer(args);
for (auto v : kHistogramValues) {
stats_plugins.RecordHistogram(handle, v, kLabelValues,
kOptionalLabelValues);
}
auto data = ReadCurrentMetricsData(
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) { return !data.contains(kMetricName); });
EXPECT_THAT(
data,
::testing::ElementsAre(::testing::Pair(
kMetricName,
::testing::ElementsAre(::testing::AllOf(
AttributesEq(kLabelKeys, kLabelValues, kActualOptionalLabelKeys,
kActualOptionalLabelValues),
HistogramResultEq(::testing::DoubleEq(kSum),
::testing::DoubleEq(kMin),
::testing::DoubleEq(kMax), kCount))))));
}
TEST_F(OpenTelemetryPluginNPCMetricsTest, InstrumentsEnabledTest) {
constexpr absl::string_view kDoubleHistogramMetricName =
"yet_another_yet_another_double_histogram";
constexpr absl::string_view kUnit64CounterMetricName = "uint64_counter";
auto histogram_handle =
grpc_core::GlobalInstrumentsRegistry::RegisterDoubleHistogram(
kDoubleHistogramMetricName, "A simple double histogram.", "unit",
/*enable_by_default=*/false)
.Build();
auto counter_handle =
grpc_core::GlobalInstrumentsRegistry::RegisterUInt64Counter(
kUnit64CounterMetricName, "A simple unit64 counter.", "unit",
/*enable_by_default=*/false)
.Build();
Init(std::move(Options().set_metric_names({kDoubleHistogramMetricName})));
auto stats_plugins =
grpc_core::GlobalStatsPluginRegistry::GetStatsPluginsForServer(
grpc_core::ChannelArgs());
EXPECT_TRUE(stats_plugins.IsInstrumentEnabled(histogram_handle));
EXPECT_FALSE(stats_plugins.IsInstrumentEnabled(counter_handle));
}
using OpenTelemetryPluginCallbackMetricsTest = OpenTelemetryPluginEnd2EndTest;
// The callback minimal interval is longer than the OT reporting interval, so we
// expect to collect duplicated (cached) values.
TEST_F(OpenTelemetryPluginCallbackMetricsTest,
ReportDurationLongerThanCollectDuration) {
constexpr absl::string_view kInt64CallbackGaugeMetric =
"int64_callback_gauge";
constexpr absl::string_view kDoubleCallbackGaugeMetric =
"double_callback_gauge";
constexpr std::array<absl::string_view, 2> kLabelKeys = {"label_key_1",
"label_key_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelKeys = {
"optional_label_key_1", "optional_label_key_2"};
constexpr std::array<absl::string_view, 2> kLabelValuesSet1 = {
"label_value_set_1", "label_value_set_1"};
constexpr std::array<absl::string_view, 2> kOptionalLabelValuesSet1 = {
"optional_label_value_set_1", "optional_label_value_set_1"};
constexpr std::array<absl::string_view, 2> kLabelValuesSet2 = {
"label_value_set_2", "label_value_set_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelValuesSet2 = {
"optional_label_value_set_2", "optional_label_value_set_2"};
auto integer_gauge_handle =
grpc_core::GlobalInstrumentsRegistry::RegisterCallbackInt64Gauge(
kInt64CallbackGaugeMetric, "An int64 callback gauge.", "unit",
/*enable_by_default=*/true)
.Labels(kLabelKeys[0], kLabelKeys[1])
.OptionalLabels(kOptionalLabelKeys[0], kOptionalLabelKeys[1])
.Build();
auto double_gauge_handle =
grpc_core::GlobalInstrumentsRegistry::RegisterCallbackDoubleGauge(
kDoubleCallbackGaugeMetric, "A double callback gauge.", "unit",
/*enable_by_default=*/true)
.Labels(kLabelKeys[0], kLabelKeys[1])
.OptionalLabels(kOptionalLabelKeys[0], kOptionalLabelKeys[1])
.Build();
Init(std::move(Options()
.set_metric_names({kInt64CallbackGaugeMetric,
kDoubleCallbackGaugeMetric})
.add_optional_label(kOptionalLabelKeys[0])
.add_optional_label(kOptionalLabelKeys[1])));
auto stats_plugins =
grpc_core::GlobalStatsPluginRegistry::GetStatsPluginsForChannel(
grpc_core::experimental::StatsPluginChannelScope(
"dns:///localhost:8080", ""));
// Multiple callbacks for the same metrics, each reporting different
// label values.
int report_count_1 = 0;
int64_t int_value_1 = 1;
double double_value_1 = 0.5;
auto registered_metric_callback_1 = stats_plugins.RegisterCallback(
[&](grpc_core::CallbackMetricReporter& reporter) {
++report_count_1;
reporter.Report(integer_gauge_handle, int_value_1, kLabelValuesSet1,
kOptionalLabelValuesSet1);
reporter.Report(integer_gauge_handle, int_value_1++, kLabelValuesSet2,
kOptionalLabelValuesSet2);
reporter.Report(double_gauge_handle, double_value_1, kLabelValuesSet1,
kOptionalLabelValuesSet1);
reporter.Report(double_gauge_handle, double_value_1++, kLabelValuesSet2,
kOptionalLabelValuesSet2);
},
grpc_core::Duration::Milliseconds(100) * grpc_test_slowdown_factor(),
integer_gauge_handle, double_gauge_handle);
int report_count_2 = 0;
int64_t int_value_2 = 1;
double double_value_2 = 0.5;
auto registered_metric_callback_2 = stats_plugins.RegisterCallback(
[&](grpc_core::CallbackMetricReporter& reporter) {
++report_count_2;
reporter.Report(integer_gauge_handle, int_value_2, kLabelValuesSet1,
kOptionalLabelValuesSet1);
reporter.Report(integer_gauge_handle, int_value_2++, kLabelValuesSet2,
kOptionalLabelValuesSet2);
reporter.Report(double_gauge_handle, double_value_2, kLabelValuesSet1,
kOptionalLabelValuesSet1);
reporter.Report(double_gauge_handle, double_value_2++, kLabelValuesSet2,
kOptionalLabelValuesSet2);
},
grpc_core::Duration::Milliseconds(100) * grpc_test_slowdown_factor(),
integer_gauge_handle, double_gauge_handle);
constexpr int kIterations = 100;
MetricsCollectorThread collector{
this, grpc_core::Duration::Milliseconds(10) * grpc_test_slowdown_factor(),
kIterations,
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) {
return !data.contains(kInt64CallbackGaugeMetric) ||
!data.contains(kDoubleCallbackGaugeMetric);
}};
absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>
data = collector.Stop();
// Verify that data is incremental with duplications (cached values).
EXPECT_LT(report_count_1, kIterations);
EXPECT_LT(report_count_2, kIterations);
EXPECT_EQ(data[kInt64CallbackGaugeMetric].size(),
data[kDoubleCallbackGaugeMetric].size());
// Verify labels.
ASSERT_THAT(
data,
::testing::UnorderedElementsAre(
::testing::Pair(
kInt64CallbackGaugeMetric,
::testing::Each(::testing::AnyOf(
AttributesEq(kLabelKeys, kLabelValuesSet1, kOptionalLabelKeys,
kOptionalLabelValuesSet1),
AttributesEq(kLabelKeys, kLabelValuesSet2, kOptionalLabelKeys,
kOptionalLabelValuesSet2)))),
::testing::Pair(
kDoubleCallbackGaugeMetric,
::testing::Each(::testing::AnyOf(
AttributesEq(kLabelKeys, kLabelValuesSet1, kOptionalLabelKeys,
kOptionalLabelValuesSet1),
AttributesEq(kLabelKeys, kLabelValuesSet2, kOptionalLabelKeys,
kOptionalLabelValuesSet2))))));
EXPECT_THAT(data, GaugeDataIsIncrementalForSpecificMetricAndLabelSet(
kInt64CallbackGaugeMetric, kLabelKeys, kLabelValuesSet1,
kOptionalLabelKeys, kOptionalLabelValuesSet1,
int64_t(0), false));
EXPECT_THAT(data, GaugeDataIsIncrementalForSpecificMetricAndLabelSet(
kInt64CallbackGaugeMetric, kLabelKeys, kLabelValuesSet2,
kOptionalLabelKeys, kOptionalLabelValuesSet2,
int64_t(0), false));
EXPECT_THAT(data,
GaugeDataIsIncrementalForSpecificMetricAndLabelSet(
kDoubleCallbackGaugeMetric, kLabelKeys, kLabelValuesSet1,
kOptionalLabelKeys, kOptionalLabelValuesSet1, 0.0, false));
EXPECT_THAT(data,
GaugeDataIsIncrementalForSpecificMetricAndLabelSet(
kDoubleCallbackGaugeMetric, kLabelKeys, kLabelValuesSet2,
kOptionalLabelKeys, kOptionalLabelValuesSet2, 0.0, false));
}
// The callback minimal interval is shorter than the OT reporting interval, so
// for each collect we should go update the cache and report the latest values.
TEST_F(OpenTelemetryPluginCallbackMetricsTest,
ReportDurationShorterThanCollectDuration) {
constexpr absl::string_view kInt64CallbackGaugeMetric =
"yet_another_int64_callback_gauge";
constexpr absl::string_view kDoubleCallbackGaugeMetric =
"yet_another_double_callback_gauge";
constexpr std::array<absl::string_view, 2> kLabelKeys = {"label_key_1",
"label_key_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelKeys = {
"optional_label_key_1", "optional_label_key_2"};
constexpr std::array<absl::string_view, 2> kLabelValuesSet1 = {
"label_value_set_1", "label_value_set_1"};
constexpr std::array<absl::string_view, 2> kOptionalLabelValuesSet1 = {
"optional_label_value_set_1", "optional_label_value_set_1"};
constexpr std::array<absl::string_view, 2> kLabelValuesSet2 = {
"label_value_set_2", "label_value_set_2"};
constexpr std::array<absl::string_view, 2> kOptionalLabelValuesSet2 = {
"optional_label_value_set_2", "optional_label_value_set_2"};
auto integer_gauge_handle =
grpc_core::GlobalInstrumentsRegistry::RegisterCallbackInt64Gauge(
kInt64CallbackGaugeMetric, "An int64 callback gauge.", "unit",
/*enable_by_default=*/true)
.Labels(kLabelKeys[0], kLabelKeys[1])
.OptionalLabels(kOptionalLabelKeys[0], kOptionalLabelKeys[1])
.Build();
auto double_gauge_handle =
grpc_core::GlobalInstrumentsRegistry::RegisterCallbackDoubleGauge(
kDoubleCallbackGaugeMetric, "A double callback gauge.", "unit",
/*enable_by_default=*/true)
.Labels(kLabelKeys[0], kLabelKeys[1])
.OptionalLabels(kOptionalLabelKeys[0], kOptionalLabelKeys[1])
.Build();
Init(std::move(Options()
.set_metric_names({kInt64CallbackGaugeMetric,
kDoubleCallbackGaugeMetric})
.add_optional_label(kOptionalLabelKeys[0])
.add_optional_label(kOptionalLabelKeys[1])));
auto stats_plugins =
grpc_core::GlobalStatsPluginRegistry::GetStatsPluginsForChannel(
grpc_core::experimental::StatsPluginChannelScope(
"dns:///localhost:8080", ""));
// Multiple callbacks for the same metrics, each reporting different
// label values.
int report_count_1 = 0;
int64_t int_value_1 = 1;
double double_value_1 = 0.5;
auto registered_metric_callback_1 = stats_plugins.RegisterCallback(
[&](grpc_core::CallbackMetricReporter& reporter) {
++report_count_1;
reporter.Report(integer_gauge_handle, int_value_1, kLabelValuesSet1,
kOptionalLabelValuesSet1);
reporter.Report(integer_gauge_handle, int_value_1++, kLabelValuesSet2,
kOptionalLabelValuesSet2);
reporter.Report(double_gauge_handle, double_value_1, kLabelValuesSet1,
kOptionalLabelValuesSet1);
reporter.Report(double_gauge_handle, double_value_1++, kLabelValuesSet2,
kOptionalLabelValuesSet2);
},
grpc_core::Duration::Milliseconds(10) * grpc_test_slowdown_factor(),
integer_gauge_handle, double_gauge_handle);
int report_count_2 = 0;
int64_t int_value_2 = 1;
double double_value_2 = 0.5;
auto registered_metric_callback_2 = stats_plugins.RegisterCallback(
[&](grpc_core::CallbackMetricReporter& reporter) {
++report_count_2;
reporter.Report(integer_gauge_handle, int_value_2, kLabelValuesSet1,
kOptionalLabelValuesSet1);
reporter.Report(integer_gauge_handle, int_value_2++, kLabelValuesSet2,
kOptionalLabelValuesSet2);
reporter.Report(double_gauge_handle, double_value_2, kLabelValuesSet1,
kOptionalLabelValuesSet1);
reporter.Report(double_gauge_handle, double_value_2++, kLabelValuesSet2,
kOptionalLabelValuesSet2);
},
grpc_core::Duration::Milliseconds(10) * grpc_test_slowdown_factor(),
integer_gauge_handle, double_gauge_handle);
constexpr int kIterations = 100;
MetricsCollectorThread collector{
this,
grpc_core::Duration::Milliseconds(100) * grpc_test_slowdown_factor(),
kIterations,
[&](const absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
data) {
return !data.contains(kInt64CallbackGaugeMetric) ||
!data.contains(kDoubleCallbackGaugeMetric);
}};
absl::flat_hash_map<
std::string,
std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>
data = collector.Stop();
// Verify that data is incremental without duplications (cached
// values).
EXPECT_EQ(report_count_1, kIterations);
EXPECT_EQ(report_count_2, kIterations);
EXPECT_EQ(data[kInt64CallbackGaugeMetric].size(),
data[kDoubleCallbackGaugeMetric].size());
// Verify labels.
ASSERT_THAT(
data,
::testing::UnorderedElementsAre(
::testing::Pair(
kInt64CallbackGaugeMetric,
::testing::Each(::testing::AnyOf(
AttributesEq(kLabelKeys, kLabelValuesSet1, kOptionalLabelKeys,
kOptionalLabelValuesSet1),
AttributesEq(kLabelKeys, kLabelValuesSet2, kOptionalLabelKeys,
kOptionalLabelValuesSet2)))),
::testing::Pair(
kDoubleCallbackGaugeMetric,
::testing::Each(::testing::AnyOf(
AttributesEq(kLabelKeys, kLabelValuesSet1, kOptionalLabelKeys,
kOptionalLabelValuesSet1),
AttributesEq(kLabelKeys, kLabelValuesSet2, kOptionalLabelKeys,
kOptionalLabelValuesSet2))))));
EXPECT_THAT(data, GaugeDataIsIncrementalForSpecificMetricAndLabelSet(
kInt64CallbackGaugeMetric, kLabelKeys, kLabelValuesSet1,
kOptionalLabelKeys, kOptionalLabelValuesSet1,
int64_t(0), true));
EXPECT_THAT(data, GaugeDataIsIncrementalForSpecificMetricAndLabelSet(
kInt64CallbackGaugeMetric, kLabelKeys, kLabelValuesSet2,
kOptionalLabelKeys, kOptionalLabelValuesSet2,
int64_t(0), true));
EXPECT_THAT(data,
GaugeDataIsIncrementalForSpecificMetricAndLabelSet(
kDoubleCallbackGaugeMetric, kLabelKeys, kLabelValuesSet1,
kOptionalLabelKeys, kOptionalLabelValuesSet1, 0.0, true));
EXPECT_THAT(data,
GaugeDataIsIncrementalForSpecificMetricAndLabelSet(
kDoubleCallbackGaugeMetric, kLabelKeys, kLabelValuesSet2,
kOptionalLabelKeys, kOptionalLabelValuesSet2, 0.0, true));
}
TEST(OpenTelemetryPluginMetricsEnablingDisablingTest, TestEnableDisableAPIs) {
grpc::internal::OpenTelemetryPluginBuilderImpl builder;
// First disable all metrics
builder.DisableAllMetrics();
EXPECT_TRUE(builder.TestOnlyEnabledMetrics().empty());
// Add in a few metrics
builder.EnableMetrics(
{"grpc.test.metric_1", "grpc.test.metric_2", "grpc.test.metric_3"});
EXPECT_THAT(
builder.TestOnlyEnabledMetrics(),
::testing::UnorderedElementsAre(
"grpc.test.metric_1", "grpc.test.metric_2", "grpc.test.metric_3"));
// Now remove a few metrics
builder.DisableMetrics({"grpc.test.metric_1", "grpc.test.metric_2"});
EXPECT_THAT(builder.TestOnlyEnabledMetrics(),
::testing::UnorderedElementsAre("grpc.test.metric_3"));
}
} // namespace
} // namespace testing
} // namespace grpc
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(&argc, argv);
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}