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//
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//
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// Copyright 2023 gRPC authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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//
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#include "src/cpp/ext/csm/metadata_exchange.h"
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#include "absl/functional/any_invocable.h"
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#include "gmock/gmock.h"
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#include "google/cloud/opentelemetry/resource_detector.h"
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#include "gtest/gtest.h"
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#include "opentelemetry/metrics/provider.h"
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#include "opentelemetry/sdk/metrics/meter_provider.h"
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#include "opentelemetry/sdk/metrics/metric_reader.h"
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#include <grpcpp/ext/otel_plugin.h>
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#include <grpcpp/grpcpp.h>
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#include "src/core/lib/channel/call_tracer.h"
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#include "src/core/lib/config/core_configuration.h"
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#include "src/core/lib/gpr/tmpfile.h"
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#include "src/core/lib/gprpp/env.h"
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#include "src/cpp/ext/csm/csm_observability.h"
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#include "src/cpp/ext/otel/otel_plugin.h"
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#include "test/core/util/test_config.h"
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#include "test/cpp/end2end/test_service_impl.h"
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#include "test/cpp/ext/otel/otel_test_library.h"
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namespace grpc {
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namespace testing {
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namespace {
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class TestScenario {
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public:
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enum class ResourceType : std::uint8_t { kGke, kGce, kUnknown };
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enum class XdsBootstrapSource : std::uint8_t { kFromFile, kFromConfig };
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explicit TestScenario(ResourceType type, XdsBootstrapSource bootstrap_source)
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: type_(type), bootstrap_source_(bootstrap_source) {}
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opentelemetry::sdk::resource::Resource GetTestResource() const {
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switch (type_) {
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case ResourceType::kGke:
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return TestGkeResource();
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case ResourceType::kGce:
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return TestGceResource();
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case ResourceType::kUnknown:
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return TestUnknownResource();
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}
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}
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static std::string Name(const ::testing::TestParamInfo<TestScenario>& info) {
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std::string ret_val;
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switch (info.param.type_) {
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case ResourceType::kGke:
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ret_val += "Gke";
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break;
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case ResourceType::kGce:
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ret_val += "Gce";
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break;
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case ResourceType::kUnknown:
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ret_val += "Unknown";
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break;
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}
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switch (info.param.bootstrap_source_) {
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case TestScenario::XdsBootstrapSource::kFromFile:
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ret_val += "BootstrapFromFile";
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break;
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case TestScenario::XdsBootstrapSource::kFromConfig:
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ret_val += "BootstrapFromConfig";
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break;
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}
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return ret_val;
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}
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ResourceType type() const { return type_; }
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XdsBootstrapSource bootstrap_source() const { return bootstrap_source_; }
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private:
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static opentelemetry::sdk::resource::Resource TestGkeResource() {
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opentelemetry::sdk::common::AttributeMap attributes;
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attributes.SetAttribute("cloud.platform", "gcp_kubernetes_engine");
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attributes.SetAttribute("k8s.pod.name", "pod");
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attributes.SetAttribute("k8s.container.name", "container");
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attributes.SetAttribute("k8s.namespace.name", "namespace");
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attributes.SetAttribute("k8s.cluster.name", "cluster");
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attributes.SetAttribute("cloud.region", "region");
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attributes.SetAttribute("cloud.account.id", "id");
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return opentelemetry::sdk::resource::Resource::Create(attributes);
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}
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static opentelemetry::sdk::resource::Resource TestGceResource() {
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opentelemetry::sdk::common::AttributeMap attributes;
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attributes.SetAttribute("cloud.platform", "gcp_compute_engine");
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attributes.SetAttribute("cloud.availability_zone", "zone");
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attributes.SetAttribute("cloud.account.id", "id");
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return opentelemetry::sdk::resource::Resource::Create(attributes);
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}
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static opentelemetry::sdk::resource::Resource TestUnknownResource() {
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opentelemetry::sdk::common::AttributeMap attributes;
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attributes.SetAttribute("cloud.platform", "random");
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return opentelemetry::sdk::resource::Resource::Create(attributes);
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}
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ResourceType type_;
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XdsBootstrapSource bootstrap_source_;
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};
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// A PluginOption that injects `ServiceMeshLabelsInjector`. (This is different
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// from CsmOpenTelemetryPluginOption since it does not restrict itself to just
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// CSM channels and servers.)
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class MeshLabelsPluginOption
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: public grpc::internal::InternalOpenTelemetryPluginOption {
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public:
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explicit MeshLabelsPluginOption(
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const opentelemetry::sdk::common::AttributeMap& map)
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: labels_injector_(
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std::make_unique<grpc::internal::ServiceMeshLabelsInjector>(map)) {}
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bool IsActiveOnClientChannel(absl::string_view /*target*/) const override {
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return true;
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}
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bool IsActiveOnServer(const grpc_core::ChannelArgs& /*args*/) const override {
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return true;
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}
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const grpc::internal::LabelsInjector* labels_injector() const override {
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return labels_injector_.get();
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}
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private:
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std::unique_ptr<grpc::internal::ServiceMeshLabelsInjector> labels_injector_;
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};
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class MetadataExchangeTest
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: public OpenTelemetryPluginEnd2EndTest,
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public ::testing::WithParamInterface<TestScenario> {
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protected:
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void Init(absl::flat_hash_set<absl::string_view> metric_names,
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bool enable_client_side_injector = true,
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std::map<std::string, std::string> labels_to_inject = {}) {
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const char* kBootstrap =
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"{\"node\": {\"id\": "
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"\"projects/1234567890/networks/mesh:mesh-id/nodes/"
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"01234567-89ab-4def-8123-456789abcdef\"}}";
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switch (GetParam().bootstrap_source()) {
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case TestScenario::XdsBootstrapSource::kFromFile: {
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ASSERT_EQ(bootstrap_file_name_, nullptr);
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FILE* bootstrap_file =
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gpr_tmpfile("gcp_observability_config", &bootstrap_file_name_);
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fputs(kBootstrap, bootstrap_file);
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fclose(bootstrap_file);
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grpc_core::SetEnv("GRPC_XDS_BOOTSTRAP", bootstrap_file_name_);
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break;
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}
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case TestScenario::XdsBootstrapSource::kFromConfig:
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grpc_core::SetEnv("GRPC_XDS_BOOTSTRAP_CONFIG", kBootstrap);
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break;
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}
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OpenTelemetryPluginEnd2EndTest::Init(std::move(
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Options()
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.set_metric_names(std::move(metric_names))
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.add_plugin_option(std::make_unique<MeshLabelsPluginOption>(
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GetParam().GetTestResource().GetAttributes()))
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.set_labels_to_inject(std::move(labels_to_inject))
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.set_target_selector(
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[enable_client_side_injector](absl::string_view /*target*/) {
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return enable_client_side_injector;
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})));
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}
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~MetadataExchangeTest() override {
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grpc_core::UnsetEnv("GRPC_GCP_OBSERVABILITY_CONFIG");
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grpc_core::UnsetEnv("GRPC_XDS_BOOTSTRAP");
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if (bootstrap_file_name_ != nullptr) {
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remove(bootstrap_file_name_);
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gpr_free(bootstrap_file_name_);
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}
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}
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void VerifyServiceMeshAttributes(
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const std::map<std::string,
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opentelemetry::sdk::common::OwnedAttributeValue>&
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attributes,
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bool is_client) {
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EXPECT_EQ(
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absl::get<std::string>(attributes.at("csm.workload_canonical_service")),
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"canonical_service");
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EXPECT_EQ(absl::get<std::string>(attributes.at("csm.mesh_id")), "mesh-id");
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EXPECT_EQ(absl::get<std::string>(
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attributes.at("csm.remote_workload_canonical_service")),
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"canonical_service");
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if (is_client) {
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EXPECT_EQ(absl::get<std::string>(attributes.at("csm.service_name")),
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"unknown");
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EXPECT_EQ(
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absl::get<std::string>(attributes.at("csm.service_namespace_name")),
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"unknown");
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} else {
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// The CSM optional labels should not be present in server metrics.
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EXPECT_THAT(attributes, ::testing::Not(::testing::Contains(
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::testing::Key("csm.service_name"))));
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EXPECT_THAT(attributes, ::testing::Not(::testing::Contains(::testing::Key(
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"csm.service_namespace_name"))));
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}
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switch (GetParam().type()) {
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case TestScenario::ResourceType::kGke:
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EXPECT_EQ(
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absl::get<std::string>(attributes.at("csm.remote_workload_type")),
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"gcp_kubernetes_engine");
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EXPECT_EQ(
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absl::get<std::string>(attributes.at("csm.remote_workload_name")),
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"workload");
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EXPECT_EQ(absl::get<std::string>(
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attributes.at("csm.remote_workload_namespace_name")),
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"namespace");
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EXPECT_EQ(absl::get<std::string>(
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attributes.at("csm.remote_workload_cluster_name")),
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"cluster");
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EXPECT_EQ(absl::get<std::string>(
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attributes.at("csm.remote_workload_location")),
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"region");
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EXPECT_EQ(absl::get<std::string>(
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attributes.at("csm.remote_workload_project_id")),
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"id");
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break;
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case TestScenario::ResourceType::kGce:
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EXPECT_EQ(
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absl::get<std::string>(attributes.at("csm.remote_workload_type")),
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"gcp_compute_engine");
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EXPECT_EQ(
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absl::get<std::string>(attributes.at("csm.remote_workload_name")),
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"workload");
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EXPECT_EQ(absl::get<std::string>(
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attributes.at("csm.remote_workload_location")),
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"zone");
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EXPECT_EQ(absl::get<std::string>(
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attributes.at("csm.remote_workload_project_id")),
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"id");
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break;
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case TestScenario::ResourceType::kUnknown:
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EXPECT_EQ(
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absl::get<std::string>(attributes.at("csm.remote_workload_type")),
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"random");
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break;
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}
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}
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void VerifyNoServiceMeshAttributes(
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const std::map<std::string,
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opentelemetry::sdk::common::OwnedAttributeValue>&
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attributes) {
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EXPECT_EQ(attributes.find("csm.remote_workload_type"), attributes.end());
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}
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private:
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char* bootstrap_file_name_ = nullptr;
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};
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// Verify that grpc.client.attempt.started does not get service mesh attributes
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TEST_P(MetadataExchangeTest, ClientAttemptStarted) {
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Init(/*metric_names=*/{
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grpc::OpenTelemetryPluginBuilder::kClientAttemptStartedInstrumentName});
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SendRPC();
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const char* kMetricName = "grpc.client.attempt.started";
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auto data = ReadCurrentMetricsData(
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[&](const absl::flat_hash_map<
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std::string,
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std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
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data) { return !data.contains(kMetricName); });
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ASSERT_EQ(data[kMetricName].size(), 1);
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auto point_data = absl::get_if<opentelemetry::sdk::metrics::SumPointData>(
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&data[kMetricName][0].point_data);
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ASSERT_NE(point_data, nullptr);
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auto client_started_value = absl::get_if<int64_t>(&point_data->value_);
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ASSERT_NE(client_started_value, nullptr);
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EXPECT_EQ(*client_started_value, 1);
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const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
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EXPECT_EQ(absl::get<std::string>(attributes.at("grpc.method")), kMethodName);
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EXPECT_EQ(absl::get<std::string>(attributes.at("grpc.target")),
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canonical_server_address_);
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VerifyNoServiceMeshAttributes(attributes);
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}
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TEST_P(MetadataExchangeTest, ClientAttemptDuration) {
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Init(/*metric_names=*/{
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grpc::OpenTelemetryPluginBuilder::kClientAttemptDurationInstrumentName});
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SendRPC();
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const char* kMetricName = "grpc.client.attempt.duration";
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auto data = ReadCurrentMetricsData(
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[&](const absl::flat_hash_map<
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std::string,
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std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
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data) { return !data.contains(kMetricName); });
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ASSERT_EQ(data[kMetricName].size(), 1);
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auto point_data =
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absl::get_if<opentelemetry::sdk::metrics::HistogramPointData>(
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&data[kMetricName][0].point_data);
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ASSERT_NE(point_data, nullptr);
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ASSERT_EQ(point_data->count_, 1);
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const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
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EXPECT_EQ(absl::get<std::string>(attributes.at("grpc.method")), kMethodName);
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EXPECT_EQ(absl::get<std::string>(attributes.at("grpc.target")),
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canonical_server_address_);
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EXPECT_EQ(absl::get<std::string>(attributes.at("grpc.status")), "OK");
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VerifyServiceMeshAttributes(attributes, /*is_client=*/true);
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}
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// Verify that grpc.server.call.started does not get service mesh attributes
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TEST_P(MetadataExchangeTest, ServerCallStarted) {
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Init(
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/*metric_names=*/{
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grpc::OpenTelemetryPluginBuilder::kServerCallStartedInstrumentName});
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SendRPC();
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const char* kMetricName = "grpc.server.call.started";
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auto data = ReadCurrentMetricsData(
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[&](const absl::flat_hash_map<
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std::string,
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std::vector<opentelemetry::sdk::metrics::PointDataAttributes>>&
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data) { return !data.contains(kMetricName); });
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ASSERT_EQ(data[kMetricName].size(), 1);
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auto point_data = absl::get_if<opentelemetry::sdk::metrics::SumPointData>(
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&data[kMetricName][0].point_data);
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ASSERT_NE(point_data, nullptr);
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ASSERT_EQ(absl::get<int64_t>(point_data->value_), 1);
|
|
|
|
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
|
|
|
|
EXPECT_EQ(absl::get<std::string>(attributes.at("grpc.method")), kMethodName);
|
|
|
|
VerifyNoServiceMeshAttributes(attributes);
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_P(MetadataExchangeTest, ServerCallDuration) {
|
|
|
|
Init(
|
|
|
|
/*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(absl::get<std::string>(attributes.at("grpc.method")), kMethodName);
|
|
|
|
EXPECT_EQ(absl::get<std::string>(attributes.at("grpc.status")), "OK");
|
|
|
|
VerifyServiceMeshAttributes(attributes, /*is_client=*/false);
|
|
|
|
}
|
|
|
|
|
|
|
|
// Test that the server records unknown when the client does not send metadata
|
|
|
|
TEST_P(MetadataExchangeTest, ClientDoesNotSendMetadata) {
|
|
|
|
Init(
|
|
|
|
/*metric_names=*/{grpc::OpenTelemetryPluginBuilder::
|
|
|
|
kServerCallDurationInstrumentName},
|
|
|
|
/*enable_client_side_injector=*/false);
|
|
|
|
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(absl::get<std::string>(attributes.at("grpc.method")), kMethodName);
|
|
|
|
EXPECT_EQ(absl::get<std::string>(attributes.at("grpc.status")), "OK");
|
|
|
|
EXPECT_EQ(
|
|
|
|
absl::get<std::string>(attributes.at("csm.workload_canonical_service")),
|
|
|
|
"canonical_service");
|
|
|
|
EXPECT_EQ(absl::get<std::string>(attributes.at("csm.mesh_id")), "mesh-id");
|
|
|
|
EXPECT_EQ(absl::get<std::string>(attributes.at("csm.remote_workload_type")),
|
|
|
|
"unknown");
|
|
|
|
}
|
|
|
|
|
|
|
|
TEST_P(MetadataExchangeTest, VerifyCsmServiceLabels) {
|
|
|
|
Init(/*metric_names=*/{grpc::OpenTelemetryPluginBuilder::
|
|
|
|
kClientAttemptDurationInstrumentName},
|
|
|
|
/*enable_client_side_injector=*/true,
|
|
|
|
// Injects CSM service labels to be recorded in the call.
|
|
|
|
{{"service_name", "myservice"}, {"service_namespace", "mynamespace"}});
|
|
|
|
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);
|
|
|
|
const auto& attributes = data[kMetricName][0].attributes.GetAttributes();
|
|
|
|
EXPECT_EQ(absl::get<std::string>(attributes.at("csm.service_name")),
|
|
|
|
"myservice");
|
|
|
|
EXPECT_EQ(absl::get<std::string>(attributes.at("csm.service_namespace_name")),
|
|
|
|
"mynamespace");
|
|
|
|
}
|
|
|
|
|
|
|
|
INSTANTIATE_TEST_SUITE_P(
|
|
|
|
MetadataExchange, MetadataExchangeTest,
|
|
|
|
::testing::Values(
|
|
|
|
TestScenario(TestScenario::ResourceType::kGke,
|
|
|
|
TestScenario::XdsBootstrapSource::kFromConfig),
|
|
|
|
TestScenario(TestScenario::ResourceType::kGke,
|
|
|
|
TestScenario::XdsBootstrapSource::kFromFile),
|
|
|
|
TestScenario(TestScenario::ResourceType::kGce,
|
|
|
|
TestScenario::XdsBootstrapSource::kFromConfig),
|
|
|
|
TestScenario(TestScenario::ResourceType::kGce,
|
|
|
|
TestScenario::XdsBootstrapSource::kFromFile),
|
|
|
|
TestScenario(TestScenario::ResourceType::kUnknown,
|
|
|
|
TestScenario::XdsBootstrapSource::kFromConfig),
|
|
|
|
TestScenario(TestScenario::ResourceType::kUnknown,
|
|
|
|
TestScenario::XdsBootstrapSource::kFromFile)),
|
|
|
|
&TestScenario::Name);
|
|
|
|
|
|
|
|
} // namespace
|
|
|
|
} // namespace testing
|
|
|
|
} // namespace grpc
|
|
|
|
|
|
|
|
int main(int argc, char** argv) {
|
|
|
|
grpc::testing::TestEnvironment env(&argc, argv);
|
|
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
|
|
grpc_core::SetEnv("CSM_WORKLOAD_NAME", "workload");
|
|
|
|
grpc_core::SetEnv("CSM_CANONICAL_SERVICE_NAME", "canonical_service");
|
|
|
|
return RUN_ALL_TESTS();
|
|
|
|
}
|