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//
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//
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// Copyright 2020 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 "absl/flags/flag.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 <grpc/grpc.h>
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#include <grpcpp/ext/csm_observability.h>
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#include <grpcpp/health_check_service_interface.h>
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#include "src/core/lib/iomgr/gethostname.h"
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#include "test/core/test_util/test_config.h"
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#include "test/cpp/interop/xds_interop_server_lib.h"
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#include "test/cpp/util/test_config.h"
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ABSL_FLAG(int32_t, port, 8080, "Server port for service.");
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ABSL_FLAG(int32_t, maintenance_port, 8081,
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"Server port for maintenance if --security is \"secure\".");
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ABSL_FLAG(std::string, server_id, "cpp_server",
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"Server ID to include in responses.");
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ABSL_FLAG(bool, secure_mode, false,
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"If true, XdsServerCredentials are used, InsecureServerCredentials "
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"otherwise");
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ABSL_FLAG(bool, enable_csm_observability, false,
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"Whether to enable CSM Observability");
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grpc::CsmObservability EnableCsmObservability() {
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gpr_log(GPR_DEBUG, "Registering Prometheus exporter");
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opentelemetry::exporter::metrics::PrometheusExporterOptions opts;
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// default was "localhost:9464" which causes connection issue across GKE
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// 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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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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assert(observability.ok());
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return *std::move(observability);
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}
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int main(int argc, char** argv) {
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grpc::testing::TestEnvironment env(&argc, argv);
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grpc::testing::InitTest(&argc, &argv, true);
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char* hostname = grpc_gethostname();
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if (hostname == nullptr) {
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std::cout << "Failed to get hostname, terminating" << std::endl;
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return 1;
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}
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int port = absl::GetFlag(FLAGS_port);
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if (port == 0) {
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std::cout << "Invalid port, terminating" << std::endl;
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return 1;
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}
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int maintenance_port = absl::GetFlag(FLAGS_maintenance_port);
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if (maintenance_port == 0) {
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std::cout << "Invalid maintenance port, terminating" << std::endl;
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return 1;
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}
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grpc::EnableDefaultHealthCheckService(false);
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bool enable_csm_observability = absl::GetFlag(FLAGS_enable_csm_observability);
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grpc::CsmObservability observability;
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if (enable_csm_observability) {
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observability = EnableCsmObservability();
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}
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grpc::testing::RunServer(absl::GetFlag(FLAGS_secure_mode),
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enable_csm_observability, port, maintenance_port,
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hostname, absl::GetFlag(FLAGS_server_id),
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[](grpc::Server* /* unused */) {});
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return 0;
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}
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