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/*
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*
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* Copyright 2015 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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*is % allowed in string
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*/
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#include <memory>
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#include <string>
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#include <gflags/gflags.h>
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#include <grpc/support/log.h>
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#include <grpcpp/grpcpp.h>
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#include "src/proto/grpc/testing/metrics.grpc.pb.h"
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#include "src/proto/grpc/testing/metrics.pb.h"
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#include "test/cpp/util/metrics_server.h"
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#include "test/cpp/util/test_config.h"
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int kDeadlineSecs = 10;
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DEFINE_string(metrics_server_address, "localhost:8081",
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"The metrics server addresses in the fomrat <hostname>:<port>");
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DEFINE_int32(deadline_secs, kDeadlineSecs,
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"The deadline (in seconds) for RCP call");
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DEFINE_bool(total_only, false,
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"If true, this prints only the total value of all gauges");
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using grpc::testing::EmptyMessage;
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using grpc::testing::GaugeResponse;
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using grpc::testing::MetricsService;
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using grpc::testing::MetricsServiceImpl;
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// Do not log anything
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void BlackholeLogger(gpr_log_func_args* args) {}
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// Prints the values of all Gauges (unless total_only is set to 'true' in which
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// case this only prints the sum of all gauge values).
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bool PrintMetrics(std::unique_ptr<MetricsService::Stub> stub, bool total_only,
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int deadline_secs) {
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grpc::ClientContext context;
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EmptyMessage message;
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std::chrono::system_clock::time_point deadline =
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std::chrono::system_clock::now() + std::chrono::seconds(deadline_secs);
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context.set_deadline(deadline);
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std::unique_ptr<grpc::ClientReader<GaugeResponse>> reader(
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stub->GetAllGauges(&context, message));
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GaugeResponse gauge_response;
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long overall_qps = 0;
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while (reader->Read(&gauge_response)) {
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if (gauge_response.value_case() == GaugeResponse::kLongValue) {
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if (!total_only) {
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std::cout << gauge_response.name() << ": "
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<< gauge_response.long_value() << std::endl;
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}
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overall_qps += gauge_response.long_value();
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} else {
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std::cout << "Gauge '" << gauge_response.name() << "' is not long valued"
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<< std::endl;
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}
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}
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std::cout << overall_qps << std::endl;
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const grpc::Status status = reader->Finish();
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if (!status.ok()) {
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std::cout << "Error in getting metrics from the client" << std::endl;
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}
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return status.ok();
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}
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int main(int argc, char** argv) {
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grpc::testing::InitTest(&argc, &argv, true);
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// The output of metrics client is in some cases programmatically parsed (for
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// example by the stress test framework). So, we do not want any of the log
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// from the grpc library appearing on stdout.
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gpr_set_log_function(BlackholeLogger);
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std::shared_ptr<grpc::Channel> channel(grpc::CreateChannel(
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FLAGS_metrics_server_address, grpc::InsecureChannelCredentials()));
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if (!PrintMetrics(MetricsService::NewStub(channel), FLAGS_total_only,
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FLAGS_deadline_secs)) {
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return 1;
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}
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return 0;
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}
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