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| 1 | +// Copyright The OpenTelemetry Authors |
| 2 | +// |
| 3 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | +// you may not use this file except in compliance with the License. |
| 5 | +// You may obtain a copy of the License at |
| 6 | +// |
| 7 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | +// |
| 9 | +// Unless required by applicable law or agreed to in writing, software |
| 10 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | +// See the License for the specific language governing permissions and |
| 13 | +// limitations under the License. |
| 14 | + |
| 15 | +#include "opentelemetry/exporters/otlp/otlp_grpc_metric_exporter_factory.h" |
| 16 | +#include "opentelemetry/metrics/provider.h" |
| 17 | +#include "opentelemetry/sdk/metrics/export/periodic_exporting_metric_reader.h" |
| 18 | +#include "opentelemetry/sdk/metrics/meter.h" |
| 19 | +#include "opentelemetry/sdk/metrics/meter_provider.h" |
| 20 | + |
| 21 | +// namespaces |
| 22 | +namespace common = opentelemetry::common; |
| 23 | +namespace metrics_api = opentelemetry::metrics; |
| 24 | +namespace metric_sdk = opentelemetry::sdk::metrics; |
| 25 | +namespace nostd = opentelemetry::nostd; |
| 26 | +namespace otlp_exporter = opentelemetry::exporter::otlp; |
| 27 | + |
| 28 | +namespace |
| 29 | +{ |
| 30 | + std::string version{ "1.3.0" }; |
| 31 | + std::string name{ "app_currency" }; |
| 32 | + std::string schema{ "https://opentelemetry.io/schemas/1.2.0" }; |
| 33 | + |
| 34 | + void initMeter() |
| 35 | + { |
| 36 | + // Build MetricExporter |
| 37 | + otlp_exporter::OtlpGrpcMetricExporterOptions otlpOptions; |
| 38 | + |
| 39 | + // Configuration via environment variable not supported yet |
| 40 | + otlpOptions.endpoint = "otelcol:4317"; |
| 41 | + otlpOptions.aggregation_temporality = metric_sdk::AggregationTemporality::kDelta; |
| 42 | + auto exporter = otlp_exporter::OtlpGrpcMetricExporterFactory::Create(otlpOptions); |
| 43 | + |
| 44 | + // Build MeterProvider and Reader |
| 45 | + metric_sdk::PeriodicExportingMetricReaderOptions options; |
| 46 | + options.export_interval_millis = std::chrono::milliseconds(1000); |
| 47 | + options.export_timeout_millis = std::chrono::milliseconds(500); |
| 48 | + std::unique_ptr<metric_sdk::MetricReader> reader{ |
| 49 | + new metric_sdk::PeriodicExportingMetricReader(std::move(exporter), options) }; |
| 50 | + auto provider = std::shared_ptr<metrics_api::MeterProvider>(new metric_sdk::MeterProvider()); |
| 51 | + auto p = std::static_pointer_cast<metric_sdk::MeterProvider>(provider); |
| 52 | + p->AddMetricReader(std::move(reader)); |
| 53 | + metrics_api::Provider::SetMeterProvider(provider); |
| 54 | + } |
| 55 | + |
| 56 | + nostd::unique_ptr<metrics_api::Counter<uint64_t>> initIntCounter() |
| 57 | + { |
| 58 | + std::string counter_name = name + "_counter"; |
| 59 | + auto provider = metrics_api::Provider::GetMeterProvider(); |
| 60 | + nostd::shared_ptr<metrics_api::Meter> meter = provider->GetMeter(name, version); |
| 61 | + auto int_counter = meter->CreateUInt64Counter(counter_name); |
| 62 | + return int_counter; |
| 63 | + } |
| 64 | +} |
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