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resource_test.cc
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#include "opentelemetry/sdk/resource/resource.h"
#include "opentelemetry/common/key_value_iterable_view.h"
#include "opentelemetry/nostd/string_view.h"
#include "opentelemetry/sdk/common/attribute_utils.h"
#include "opentelemetry/sdk/resource/experimental_semantic_conventions.h"
#include "opentelemetry/sdk/resource/resource_detector.h"
#include <cstdlib>
#include <string>
#include <unordered_map>
#include <gtest/gtest.h>
#if defined(_MSC_VER)
# define putenv _putenv
#endif
using namespace opentelemetry::sdk::resource;
class TestResource : public Resource
{
public:
TestResource(ResourceAttributes attributes = ResourceAttributes()) : Resource(attributes) {}
};
TEST(ResourceTest, create_without_servicename)
{
ResourceAttributes expected_attributes = {
{"service", "backend"},
{"version", (uint32_t)1},
{"cost", 234.23},
{OTEL_CPP_GET_ATTR(AttrTelemetrySdkLanguage), "cpp"},
{OTEL_CPP_GET_ATTR(AttrTelemetrySdkName), "opentelemetry"},
{OTEL_CPP_GET_ATTR(AttrTelemetrySdkVersion), OPENTELEMETRY_SDK_VERSION},
{OTEL_CPP_GET_ATTR(AttrServiceName), "unknown_service"}};
ResourceAttributes attributes = {
{"service", "backend"}, {"version", (uint32_t)1}, {"cost", 234.23}};
auto resource = Resource::Create(attributes);
auto received_attributes = resource.GetAttributes();
for (auto &e : received_attributes)
{
EXPECT_TRUE(expected_attributes.find(e.first) != expected_attributes.end());
if (expected_attributes.find(e.first) != expected_attributes.end())
if (e.first == "version")
EXPECT_EQ(opentelemetry::nostd::get<uint32_t>(expected_attributes.find(e.first)->second),
opentelemetry::nostd::get<uint32_t>(e.second));
else if (e.first == "cost")
EXPECT_EQ(opentelemetry::nostd::get<double>(expected_attributes.find(e.first)->second),
opentelemetry::nostd::get<double>(e.second));
else
EXPECT_EQ(opentelemetry::nostd::get<std::string>(expected_attributes.find(e.first)->second),
opentelemetry::nostd::get<std::string>(e.second));
}
EXPECT_EQ(received_attributes.size(), expected_attributes.size()); // for missing service.name
}
TEST(ResourceTest, create_with_servicename)
{
ResourceAttributes expected_attributes = {
{"version", (uint32_t)1},
{"cost", 234.23},
{OTEL_CPP_GET_ATTR(AttrTelemetrySdkLanguage), "cpp"},
{OTEL_CPP_GET_ATTR(AttrTelemetrySdkName), "opentelemetry"},
{OTEL_CPP_GET_ATTR(AttrTelemetrySdkVersion), OPENTELEMETRY_SDK_VERSION},
{OTEL_CPP_GET_ATTR(AttrServiceName), "backend"},
};
ResourceAttributes attributes = {
{"service.name", "backend"}, {"version", (uint32_t)1}, {"cost", 234.23}};
auto resource = Resource::Create(attributes);
auto received_attributes = resource.GetAttributes();
for (auto &e : received_attributes)
{
EXPECT_TRUE(expected_attributes.find(e.first) != expected_attributes.end());
if (expected_attributes.find(e.first) != expected_attributes.end())
{
if (e.first == "version")
EXPECT_EQ(opentelemetry::nostd::get<uint32_t>(expected_attributes.find(e.first)->second),
opentelemetry::nostd::get<uint32_t>(e.second));
else if (e.first == "cost")
EXPECT_EQ(opentelemetry::nostd::get<double>(expected_attributes.find(e.first)->second),
opentelemetry::nostd::get<double>(e.second));
else
EXPECT_EQ(opentelemetry::nostd::get<std::string>(expected_attributes.find(e.first)->second),
opentelemetry::nostd::get<std::string>(e.second));
}
}
EXPECT_EQ(received_attributes.size(), expected_attributes.size()); // for missing service.name
}
TEST(ResourceTest, create_with_emptyatrributes)
{
ResourceAttributes expected_attributes = {
{OTEL_CPP_GET_ATTR(AttrTelemetrySdkLanguage), "cpp"},
{OTEL_CPP_GET_ATTR(AttrTelemetrySdkName), "opentelemetry"},
{OTEL_CPP_GET_ATTR(AttrTelemetrySdkVersion), OPENTELEMETRY_SDK_VERSION},
{OTEL_CPP_GET_ATTR(AttrServiceName), "unknown_service"},
};
ResourceAttributes attributes = {};
auto resource = Resource::Create(attributes);
auto received_attributes = resource.GetAttributes();
for (auto &e : received_attributes)
{
EXPECT_TRUE(expected_attributes.find(e.first) != expected_attributes.end());
if (expected_attributes.find(e.first) != expected_attributes.end())
EXPECT_EQ(opentelemetry::nostd::get<std::string>(expected_attributes.find(e.first)->second),
opentelemetry::nostd::get<std::string>(e.second));
}
EXPECT_EQ(received_attributes.size(), expected_attributes.size()); // for missing service.name
}
TEST(ResourceTest, create_with_schemaurl)
{
const std::string schema_url = "https://opentelemetry.io/schemas/1.2.0";
ResourceAttributes attributes = {};
auto resource = Resource::Create(attributes, schema_url);
auto received_schema_url = resource.GetSchemaURL();
EXPECT_EQ(received_schema_url, schema_url);
}
TEST(ResourceTest, Merge)
{
TestResource resource1(ResourceAttributes({{"service", "backend"}}));
TestResource resource2(ResourceAttributes({{"host", "service-host"}}));
std::map<std::string, std::string> expected_attributes = {{"service", "backend"},
{"host", "service-host"}};
auto merged_resource = resource1.Merge(resource2);
auto received_attributes = merged_resource.GetAttributes();
for (auto &e : received_attributes)
{
EXPECT_TRUE(expected_attributes.find(e.first) != expected_attributes.end());
if (expected_attributes.find(e.first) != expected_attributes.end())
{
EXPECT_EQ(expected_attributes.find(e.first)->second,
opentelemetry::nostd::get<std::string>(e.second));
}
}
EXPECT_EQ(received_attributes.size(), expected_attributes.size());
}
TEST(ResourceTest, MergeEmptyString)
{
TestResource resource1({{"service", "backend"}, {"host", "service-host"}});
TestResource resource2({{"service", ""}, {"host", "another-service-host"}});
std::map<std::string, std::string> expected_attributes = {{"service", ""},
{"host", "another-service-host"}};
auto merged_resource = resource1.Merge(resource2);
auto received_attributes = merged_resource.GetAttributes();
for (auto &e : received_attributes)
{
EXPECT_TRUE(expected_attributes.find(e.first) != expected_attributes.end());
if (expected_attributes.find(e.first) != expected_attributes.end())
{
EXPECT_EQ(expected_attributes.find(e.first)->second,
opentelemetry::nostd::get<std::string>(e.second));
}
}
EXPECT_EQ(received_attributes.size(), expected_attributes.size());
}
#ifndef NO_GETENV
TEST(ResourceTest, OtelResourceDetector)
{
std::map<std::string, std::string> expected_attributes = {{"k", "v"}};
char env[] = "OTEL_RESOURCE_ATTRIBUTES=k=v";
putenv(env);
OTELResourceDetector detector;
auto resource = detector.Detect();
auto received_attributes = resource.GetAttributes();
for (auto &e : received_attributes)
{
EXPECT_TRUE(expected_attributes.find(e.first) != expected_attributes.end());
if (expected_attributes.find(e.first) != expected_attributes.end())
{
EXPECT_EQ(expected_attributes.find(e.first)->second,
opentelemetry::nostd::get<std::string>(e.second));
}
}
EXPECT_EQ(received_attributes.size(), expected_attributes.size());
# if defined(_MSC_VER)
putenv("OTEL_RESOURCE_ATTRIBUTES=");
# else
unsetenv("OTEL_RESOURCE_ATTRIBUTES");
# endif
}
TEST(ResourceTest, OtelResourceDetectorEmptyEnv)
{
std::map<std::string, std::string> expected_attributes = {};
# if defined(_MSC_VER)
putenv("OTEL_RESOURCE_ATTRIBUTES=");
# else
unsetenv("OTEL_RESOURCE_ATTRIBUTES");
# endif
OTELResourceDetector detector;
auto resource = detector.Detect();
auto received_attributes = resource.GetAttributes();
for (auto &e : received_attributes)
{
EXPECT_TRUE(expected_attributes.find(e.first) != expected_attributes.end());
if (expected_attributes.find(e.first) != expected_attributes.end())
{
EXPECT_EQ(expected_attributes.find(e.first)->second,
opentelemetry::nostd::get<std::string>(e.second));
}
}
EXPECT_EQ(received_attributes.size(), expected_attributes.size());
}
#endif