1 /*
2 *
3 * Copyright 2015 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *is % allowed in string
17 */
18
19 #include <memory>
20 #include <string>
21
22 #include <gflags/gflags.h>
23 #include <grpc/support/log.h>
24 #include <grpcpp/grpcpp.h>
25
26 #include "src/proto/grpc/testing/metrics.grpc.pb.h"
27 #include "src/proto/grpc/testing/metrics.pb.h"
28 #include "test/cpp/util/metrics_server.h"
29 #include "test/cpp/util/test_config.h"
30
31 int kDeadlineSecs = 10;
32
33 DEFINE_string(metrics_server_address, "localhost:8081",
34 "The metrics server addresses in the fomrat <hostname>:<port>");
35 DEFINE_int32(deadline_secs, kDeadlineSecs,
36 "The deadline (in seconds) for RCP call");
37 DEFINE_bool(total_only, false,
38 "If true, this prints only the total value of all gauges");
39
40 using grpc::testing::EmptyMessage;
41 using grpc::testing::GaugeResponse;
42 using grpc::testing::MetricsService;
43 using grpc::testing::MetricsServiceImpl;
44
45 // Do not log anything
BlackholeLogger(gpr_log_func_args * args)46 void BlackholeLogger(gpr_log_func_args* args) {}
47
48 // Prints the values of all Gauges (unless total_only is set to 'true' in which
49 // case this only prints the sum of all gauge values).
PrintMetrics(std::unique_ptr<MetricsService::Stub> stub,bool total_only,int deadline_secs)50 bool PrintMetrics(std::unique_ptr<MetricsService::Stub> stub, bool total_only,
51 int deadline_secs) {
52 grpc::ClientContext context;
53 EmptyMessage message;
54
55 std::chrono::system_clock::time_point deadline =
56 std::chrono::system_clock::now() + std::chrono::seconds(deadline_secs);
57
58 context.set_deadline(deadline);
59
60 std::unique_ptr<grpc::ClientReader<GaugeResponse>> reader(
61 stub->GetAllGauges(&context, message));
62
63 GaugeResponse gauge_response;
64 long overall_qps = 0;
65 while (reader->Read(&gauge_response)) {
66 if (gauge_response.value_case() == GaugeResponse::kLongValue) {
67 if (!total_only) {
68 std::cout << gauge_response.name() << ": "
69 << gauge_response.long_value() << std::endl;
70 }
71 overall_qps += gauge_response.long_value();
72 } else {
73 std::cout << "Gauge '" << gauge_response.name() << "' is not long valued"
74 << std::endl;
75 }
76 }
77
78 std::cout << overall_qps << std::endl;
79
80 const grpc::Status status = reader->Finish();
81 if (!status.ok()) {
82 std::cout << "Error in getting metrics from the client" << std::endl;
83 }
84
85 return status.ok();
86 }
87
main(int argc,char ** argv)88 int main(int argc, char** argv) {
89 grpc::testing::InitTest(&argc, &argv, true);
90
91 // The output of metrics client is in some cases programatically parsed (for
92 // example by the stress test framework). So, we do not want any of the log
93 // from the grpc library appearing on stdout.
94 gpr_set_log_function(BlackholeLogger);
95
96 std::shared_ptr<grpc::Channel> channel(grpc::CreateChannel(
97 FLAGS_metrics_server_address, grpc::InsecureChannelCredentials()));
98
99 if (!PrintMetrics(MetricsService::NewStub(channel), FLAGS_total_only,
100 FLAGS_deadline_secs)) {
101 return 1;
102 }
103
104 return 0;
105 }
106