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Fixes #1405
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56 changes: 56 additions & 0 deletions
56
exporters/memory/include/opentelemetry/exporters/memory/in_memory_metric_exporter.h
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// Copyright The OpenTelemetry Authors | ||
// SPDX-License-Identifier: Apache-2.0 | ||
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#pragma once | ||
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#include <atomic> | ||
#include <vector> | ||
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#include "opentelemetry/sdk/metrics/export/metric_producer.h" | ||
#include "opentelemetry/sdk/metrics/instruments.h" | ||
#include "opentelemetry/sdk/metrics/push_metric_exporter.h" | ||
#include "opentelemetry/version.h" | ||
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OPENTELEMETRY_BEGIN_NAMESPACE | ||
namespace exporter | ||
{ | ||
namespace memory | ||
{ | ||
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/// A Push Metric Exporter which accumulates metrics data in memory and allows it to be inspected. | ||
/// It is not thread-safe. | ||
class InMemoryMetricExporter final : public sdk::metrics::PushMetricExporter | ||
{ | ||
using AggregationTemporalityMap = | ||
std::map<sdk::metrics::InstrumentType, sdk::metrics::AggregationTemporality>; | ||
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public: | ||
/// @param temporality Output temporality as a function of instrument kind. | ||
InMemoryMetricExporter(const sdk::metrics::AggregationTemporalitySelector &temporality) | ||
: temporality_(temporality) | ||
{} | ||
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InMemoryMetricExporter(const InMemoryMetricExporter &) = delete; | ||
InMemoryMetricExporter(const InMemoryMetricExporter &&) = delete; | ||
void operator=(const InMemoryMetricExporter &) = delete; | ||
void operator=(const InMemoryMetricExporter &&) = delete; | ||
~InMemoryMetricExporter() override = default; | ||
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sdk::common::ExportResult Export(const sdk::metrics::ResourceMetrics &data) noexcept override; | ||
sdk::metrics::AggregationTemporality GetAggregationTemporality( | ||
sdk::metrics::InstrumentType instrument_type) const noexcept override; | ||
bool ForceFlush( | ||
std::chrono::microseconds timeout = (std::chrono::microseconds::max)()) noexcept override; | ||
bool Shutdown(std::chrono::microseconds timeout = std::chrono::microseconds(0)) noexcept override; | ||
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const std::vector<sdk::metrics::ResourceMetrics> &GetData() const; | ||
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private: | ||
std::vector<sdk::metrics::ResourceMetrics> data_{}; | ||
std::atomic<bool> is_shutdown_{false}; | ||
sdk::metrics::AggregationTemporalitySelector temporality_; | ||
}; | ||
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} // namespace memory | ||
} // namespace exporter | ||
OPENTELEMETRY_END_NAMESPACE |
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// Copyright The OpenTelemetry Authors | ||
// SPDX-License-Identifier: Apache-2.0 | ||
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#include "opentelemetry/exporters/memory/in_memory_metric_exporter.h" | ||
#include "opentelemetry/sdk/common/global_log_handler.h" | ||
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OPENTELEMETRY_BEGIN_NAMESPACE | ||
namespace exporter | ||
{ | ||
namespace memory | ||
{ | ||
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using sdk::common::ExportResult; | ||
using sdk::metrics::AggregationTemporality; | ||
using sdk::metrics::InstrumentType; | ||
using sdk::metrics::ResourceMetrics; | ||
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ExportResult InMemoryMetricExporter::Export(const ResourceMetrics &data) noexcept | ||
{ | ||
if (is_shutdown_) | ||
{ | ||
OTEL_INTERNAL_LOG_ERROR("[In Memory Metric Exporter] Exporting failed, exporter is shutdown"); | ||
return ExportResult::kFailure; | ||
} | ||
data_.push_back(data); | ||
return ExportResult::kSuccess; | ||
} | ||
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AggregationTemporality InMemoryMetricExporter::GetAggregationTemporality( | ||
InstrumentType instrument_type) const noexcept | ||
{ | ||
return temporality_(instrument_type); | ||
} | ||
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bool InMemoryMetricExporter::ForceFlush(std::chrono::microseconds /* timeout */) noexcept | ||
{ | ||
return true; | ||
} | ||
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bool InMemoryMetricExporter::Shutdown(std::chrono::microseconds /* timeout */) noexcept | ||
{ | ||
is_shutdown_ = true; | ||
return true; | ||
} | ||
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const std::vector<ResourceMetrics> &InMemoryMetricExporter::GetData() const | ||
{ | ||
return data_; | ||
} | ||
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} // namespace memory | ||
} // namespace exporter | ||
OPENTELEMETRY_END_NAMESPACE |
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// Copyright The OpenTelemetry Authors | ||
// SPDX-License-Identifier: Apache-2.0 | ||
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#include "opentelemetry/exporters/memory/in_memory_metric_exporter.h" | ||
#include "opentelemetry/sdk/metrics/export/metric_producer.h" | ||
#include "opentelemetry/sdk/metrics/instruments.h" | ||
#include "opentelemetry/sdk/resource/resource.h" | ||
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#include <gtest/gtest.h> | ||
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using opentelemetry::exporter::memory::InMemoryMetricExporter; | ||
using opentelemetry::sdk::common::ExportResult; | ||
using opentelemetry::sdk::metrics::AggregationTemporality; | ||
using opentelemetry::sdk::metrics::InstrumentType; | ||
using opentelemetry::sdk::metrics::ScopeMetrics; | ||
using opentelemetry::sdk::resource::Resource; | ||
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class InMemoryMetricExporterTest : public ::testing::Test | ||
{ | ||
protected: | ||
InMemoryMetricExporter exporter_{[](auto) { return AggregationTemporality::kCumulative; }}; | ||
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Resource resource_ = Resource::GetEmpty(); | ||
opentelemetry::sdk::metrics::ResourceMetrics resource_metrics_{ | ||
&resource_, | ||
std::vector<ScopeMetrics>{}, | ||
}; | ||
}; | ||
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TEST_F(InMemoryMetricExporterTest, Export) | ||
{ | ||
EXPECT_EQ(exporter_.Export(resource_metrics_), ExportResult::kSuccess); | ||
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auto &data = exporter_.GetData(); | ||
EXPECT_EQ(data.size(), 1); | ||
EXPECT_EQ(data.begin()->resource_, &resource_); | ||
} | ||
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TEST_F(InMemoryMetricExporterTest, Shutdown) | ||
{ | ||
EXPECT_TRUE(exporter_.Shutdown()); | ||
EXPECT_EQ(exporter_.Export(resource_metrics_), ExportResult::kFailure); | ||
} | ||
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TEST_F(InMemoryMetricExporterTest, TemporalitySelector) | ||
{ | ||
EXPECT_EQ(exporter_.GetAggregationTemporality(InstrumentType::kCounter), | ||
AggregationTemporality::kCumulative); | ||
} |