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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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67 lines
2.6 KiB
67 lines
2.6 KiB
/* |
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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 <iostream> |
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#include <memory> |
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#include <string> |
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#include "absl/flags/flag.h" |
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#include "absl/flags/parse.h" |
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#include "absl/log/log.h" |
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#include "absl/strings/str_cat.h" |
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#include "examples/cpp/otel/util.h" |
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#include "opentelemetry/exporters/prometheus/exporter_factory.h" |
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#include "opentelemetry/exporters/prometheus/exporter_options.h" |
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#include "opentelemetry/sdk/metrics/meter_provider.h" |
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#include <grpcpp/ext/admin_services.h> |
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#include <grpcpp/ext/csm_observability.h> |
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#include <grpcpp/ext/proto_server_reflection_plugin.h> |
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#include <grpcpp/grpcpp.h> |
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#include <grpcpp/health_check_service_interface.h> |
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#include <grpcpp/xds_server_builder.h> |
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ABSL_FLAG(int32_t, port, 50051, "Server port for service."); |
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ABSL_FLAG(std::string, prometheus_endpoint, "localhost:9464", |
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"Prometheus exporter endpoint"); |
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int main(int argc, char** argv) { |
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absl::ParseCommandLine(argc, argv); |
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opentelemetry::exporter::metrics::PrometheusExporterOptions opts; |
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// default was "localhost:9464" which causes connection issue across GKE pods |
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opts.url = "0.0.0.0:9464"; |
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auto prometheus_exporter = |
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opentelemetry::exporter::metrics::PrometheusExporterFactory::Create(opts); |
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auto meter_provider = |
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std::make_shared<opentelemetry::sdk::metrics::MeterProvider>(); |
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// The default histogram boundaries are not granular enough for RPCs. Override |
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// the "grpc.server.call.duration" view as recommended by |
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// https://github.com/grpc/proposal/blob/master/A66-otel-stats.md. |
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AddLatencyView(meter_provider.get(), "grpc.server.call.duration", "s"); |
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meter_provider->AddMetricReader(std::move(prometheus_exporter)); |
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auto observability = grpc::CsmObservabilityBuilder() |
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.SetMeterProvider(std::move(meter_provider)) |
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.BuildAndRegister(); |
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if (!observability.ok()) { |
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std::cerr << "CsmObservability::Init() failed: " |
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<< observability.status().ToString() << std::endl; |
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return static_cast<int>(observability.status().code()); |
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} |
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RunServer(absl::GetFlag(FLAGS_port)); |
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return 0; |
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}
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