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