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ostream metrics example (open-telemetry#1312)
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|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| package(default_visibility = ["//visibility:public"]) | ||
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| cc_library( | ||
| name = "common_metrics_foo_library", | ||
| srcs = [ | ||
| "foo_library.cc", | ||
| ], | ||
| hdrs = [ | ||
| "foo_library.h", | ||
| ], | ||
| defines = ["BAZEL_BUILD"], | ||
| deps = [ | ||
| "//api", | ||
| "//sdk:headers", | ||
| "//sdk/src/metrics", | ||
| ], | ||
| ) |
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| // Copyright The OpenTelemetry Authors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| #ifndef ENABLE_METRICS_PREVIEW | ||
| # include <chrono> | ||
| # include <thread> | ||
| # include "opentelemetry/metrics/provider.h" | ||
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| namespace nostd = opentelemetry::nostd; | ||
| namespace metrics_api = opentelemetry::metrics; | ||
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| void foo_library(const std::string &name) | ||
| { | ||
| // Get the Meter from the MeterProvider | ||
| auto provider = metrics_api::Provider::GetMeterProvider(); | ||
| nostd::shared_ptr<metrics_api::Meter> meter = provider->GetMeter(name, "1.2.0"); | ||
| auto double_counter = meter->CreateDoubleCounter(name); | ||
| double_counter->Add(28.5); | ||
| std::this_thread::sleep_for(std::chrono::milliseconds(500)); | ||
| double_counter->Add(3.14); | ||
| std::this_thread::sleep_for(std::chrono::milliseconds(500)); | ||
| double_counter->Add(23.5); | ||
| std::this_thread::sleep_for(std::chrono::milliseconds(5000)); | ||
| } | ||
| #endif |
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| // Copyright The OpenTelemetry Authors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| #pragma once | ||
| #ifndef ENABLE_METRICS_PREVIEW | ||
| # include <string> | ||
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| void foo_library(const std::string &name); | ||
| #endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| // Copyright The OpenTelemetry Authors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
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| #ifndef ENABLE_METRICS_PREVIEW | ||
| # include <memory> | ||
| # include "opentelemetry/exporters/ostream/metric_exporter.h" | ||
| # include "opentelemetry/metrics/provider.h" | ||
| # include "opentelemetry/sdk/metrics/aggregation/default_aggregation.h" | ||
| # include "opentelemetry/sdk/metrics/aggregation/histogram_aggregation.h" | ||
| # include "opentelemetry/sdk/metrics/export/periodic_exporting_metric_reader.h" | ||
| # include "opentelemetry/sdk/metrics/meter.h" | ||
| # include "opentelemetry/sdk/metrics/meter_provider.h" | ||
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| # ifdef BAZEL_BUILD | ||
| # include "examples/common/metrics_foo_library/foo_library.h" | ||
| # else | ||
| # include "metrics_foo_library/foo_library.h" | ||
| # endif | ||
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| namespace metric_sdk = opentelemetry::sdk::metrics; | ||
| namespace nostd = opentelemetry::nostd; | ||
| namespace common = opentelemetry::common; | ||
| namespace exportermetrics = opentelemetry::exporter::metrics; | ||
| namespace metrics_api = opentelemetry::metrics; | ||
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| namespace | ||
| { | ||
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| void initMetrics(const std::string &name) | ||
| { | ||
| std::unique_ptr<metric_sdk::MetricExporter> exporter{new exportermetrics::OStreamMetricExporter}; | ||
| std::vector<std::unique_ptr<metric_sdk::MetricExporter>> exporters; | ||
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| std::string version{"1.2.0"}; | ||
| std::string schema{"https://opentelemetry.io/schemas/1.2.0"}; | ||
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| // Initialize and set the global MeterProvider | ||
| metric_sdk::PeriodicExportingMetricReaderOptions options; | ||
| options.export_interval_millis = std::chrono::milliseconds(1000); | ||
| options.export_timeout_millis = std::chrono::milliseconds(500); | ||
| std::unique_ptr<metric_sdk::MetricReader> reader{ | ||
| new metric_sdk::PeriodicExportingMetricReader(std::move(exporter), options)}; | ||
| auto provider = std::shared_ptr<metrics_api::MeterProvider>( | ||
| new metric_sdk::MeterProvider(std::move(exporters))); | ||
| auto p = std::static_pointer_cast<metric_sdk::MeterProvider>(provider); | ||
| p->AddMetricReader(std::move(reader)); | ||
| std::unique_ptr<metric_sdk::InstrumentSelector> instrument_selector{ | ||
| new metric_sdk::InstrumentSelector(metric_sdk::InstrumentType::kCounter, name)}; | ||
| std::unique_ptr<metric_sdk::MeterSelector> meter_selector{ | ||
| new metric_sdk::MeterSelector(name, version, schema)}; | ||
| std::unique_ptr<metric_sdk::View> view{ | ||
| new metric_sdk::View{name, "description", metric_sdk::AggregationType::kSum}}; | ||
| p->AddView(std::move(instrument_selector), std::move(meter_selector), std::move(view)); | ||
| metrics_api::Provider::SetMeterProvider(provider); | ||
| } | ||
| } // namespace | ||
| int main() | ||
| { | ||
| std::string name{"ostream_metric_example"}; | ||
| initMetrics(name); | ||
| foo_library(name); | ||
| } | ||
| #else | ||
| int main() {} | ||
| #endif |
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