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 <grpcpp/grpcpp.h>
20
21 #include <memory>
22 #include <string>
23
24 #include "absl/flags/flag.h"
25 #include "src/core/util/crash.h"
26 #include "src/proto/grpc/testing/metrics.grpc.pb.h"
27 #include "src/proto/grpc/testing/metrics.pb.h"
28 #include "test/core/test_util/test_config.h"
29 #include "test/cpp/util/metrics_server.h"
30 #include "test/cpp/util/test_config.h"
31
32 int kDeadlineSecs = 10;
33
34 ABSL_FLAG(std::string, metrics_server_address, "localhost:8081",
35 "The metrics server addresses in the format <hostname>:<port>");
36 // TODO(Capstan): Consider using absl::Duration
37 ABSL_FLAG(int32_t, deadline_secs, kDeadlineSecs,
38 "The deadline (in seconds) for RCP call");
39 ABSL_FLAG(bool, total_only, false,
40 "If true, this prints only the total value of all gauges");
41
42 using grpc::testing::EmptyMessage;
43 using grpc::testing::GaugeResponse;
44 using grpc::testing::MetricsService;
45
46 // Prints the values of all Gauges (unless total_only is set to 'true' in which
47 // case this only prints the sum of all gauge values).
PrintMetrics(std::unique_ptr<MetricsService::Stub> stub,bool total_only,int deadline_secs)48 bool PrintMetrics(std::unique_ptr<MetricsService::Stub> stub, bool total_only,
49 int deadline_secs) {
50 grpc::ClientContext context;
51 EmptyMessage message;
52
53 std::chrono::system_clock::time_point deadline =
54 std::chrono::system_clock::now() + std::chrono::seconds(deadline_secs);
55
56 context.set_deadline(deadline);
57
58 std::unique_ptr<grpc::ClientReader<GaugeResponse>> reader(
59 stub->GetAllGauges(&context, message));
60
61 GaugeResponse gauge_response;
62 long overall_qps = 0;
63 while (reader->Read(&gauge_response)) {
64 if (gauge_response.value_case() == GaugeResponse::kLongValue) {
65 if (!total_only) {
66 std::cout << gauge_response.name() << ": "
67 << gauge_response.long_value() << std::endl;
68 }
69 overall_qps += gauge_response.long_value();
70 } else {
71 std::cout << "Gauge '" << gauge_response.name() << "' is not long valued"
72 << std::endl;
73 }
74 }
75
76 std::cout << overall_qps << std::endl;
77
78 const grpc::Status status = reader->Finish();
79 if (!status.ok()) {
80 std::cout << "Error in getting metrics from the client" << std::endl;
81 }
82
83 return status.ok();
84 }
85
main(int argc,char ** argv)86 int main(int argc, char** argv) {
87 grpc::testing::InitTest(&argc, &argv, true);
88
89 // The output of metrics client is in some cases programmatically parsed (for
90 // example by the stress test framework). So, we do not want any of the log
91 // from the grpc library appearing on stdout.
92 grpc_disable_all_absl_logs();
93
94 std::shared_ptr<grpc::Channel> channel(
95 grpc::CreateChannel(absl::GetFlag(FLAGS_metrics_server_address),
96 grpc::InsecureChannelCredentials()));
97
98 if (!PrintMetrics(MetricsService::NewStub(channel),
99 absl::GetFlag(FLAGS_total_only),
100 absl::GetFlag(FLAGS_deadline_secs))) {
101 return 1;
102 }
103
104 return 0;
105 }
106