| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| *is % allowed in string |
| */ |
| |
| #include "test/cpp/util/metrics_server.h" |
| |
| #include <grpc/support/log.h> |
| #include <grpcpp/server.h> |
| #include <grpcpp/server_builder.h> |
| |
| #include "src/proto/grpc/testing/metrics.grpc.pb.h" |
| #include "src/proto/grpc/testing/metrics.pb.h" |
| |
| namespace grpc { |
| namespace testing { |
| |
| QpsGauge::QpsGauge() |
| : start_time_(gpr_now(GPR_CLOCK_REALTIME)), num_queries_(0) {} |
| |
| void QpsGauge::Reset() { |
| std::lock_guard<std::mutex> lock(num_queries_mu_); |
| num_queries_ = 0; |
| start_time_ = gpr_now(GPR_CLOCK_REALTIME); |
| } |
| |
| void QpsGauge::Incr() { |
| std::lock_guard<std::mutex> lock(num_queries_mu_); |
| num_queries_++; |
| } |
| |
| long QpsGauge::Get() { |
| std::lock_guard<std::mutex> lock(num_queries_mu_); |
| gpr_timespec time_diff = |
| gpr_time_sub(gpr_now(GPR_CLOCK_REALTIME), start_time_); |
| long duration_secs = time_diff.tv_sec > 0 ? time_diff.tv_sec : 1; |
| return num_queries_ / duration_secs; |
| } |
| |
| grpc::Status MetricsServiceImpl::GetAllGauges( |
| ServerContext* context, const EmptyMessage* request, |
| ServerWriter<GaugeResponse>* writer) { |
| gpr_log(GPR_DEBUG, "GetAllGauges called"); |
| |
| std::lock_guard<std::mutex> lock(mu_); |
| for (auto it = qps_gauges_.begin(); it != qps_gauges_.end(); it++) { |
| GaugeResponse resp; |
| resp.set_name(it->first); // Gauge name |
| resp.set_long_value(it->second->Get()); // Gauge value |
| writer->Write(resp); |
| } |
| |
| return Status::OK; |
| } |
| |
| grpc::Status MetricsServiceImpl::GetGauge(ServerContext* context, |
| const GaugeRequest* request, |
| GaugeResponse* response) { |
| std::lock_guard<std::mutex> lock(mu_); |
| |
| const auto it = qps_gauges_.find(request->name()); |
| if (it != qps_gauges_.end()) { |
| response->set_name(it->first); |
| response->set_long_value(it->second->Get()); |
| } |
| |
| return Status::OK; |
| } |
| |
| std::shared_ptr<QpsGauge> MetricsServiceImpl::CreateQpsGauge( |
| const grpc::string& name, bool* already_present) { |
| std::lock_guard<std::mutex> lock(mu_); |
| |
| std::shared_ptr<QpsGauge> qps_gauge(new QpsGauge()); |
| const auto p = qps_gauges_.insert(std::make_pair(name, qps_gauge)); |
| |
| // p.first is an iterator pointing to <name, shared_ptr<QpsGauge>> pair. |
| // p.second is a boolean which is set to 'true' if the QpsGauge is |
| // successfully inserted in the guages_ map and 'false' if it is already |
| // present in the map |
| *already_present = !p.second; |
| return p.first->second; |
| } |
| |
| // Starts the metrics server and returns the grpc::Server instance. Call Wait() |
| // on the returned server instance. |
| std::unique_ptr<grpc::Server> MetricsServiceImpl::StartServer(int port) { |
| gpr_log(GPR_INFO, "Building metrics server.."); |
| |
| const grpc::string address = "0.0.0.0:" + grpc::to_string(port); |
| |
| ServerBuilder builder; |
| builder.AddListeningPort(address, grpc::InsecureServerCredentials()); |
| builder.RegisterService(this); |
| |
| std::unique_ptr<grpc::Server> server(builder.BuildAndStart()); |
| gpr_log(GPR_INFO, "Metrics server %s started. Ready to receive requests..", |
| address.c_str()); |
| |
| return server; |
| } |
| |
| } // namespace testing |
| } // namespace grpc |