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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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103 lines
3.6 KiB
103 lines
3.6 KiB
/* |
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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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++/grpc++.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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#include "test/proto/metrics.grpc.pb.h" |
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#include "test/proto/metrics.pb.h" |
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DEFINE_string(metrics_server_address, "", |
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"The metrics server addresses in the fomrat <hostname>:<port>"); |
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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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void PrintMetrics(grpc::string& server_address) { |
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gpr_log(GPR_INFO, "creating a channel to %s", server_address.c_str()); |
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std::shared_ptr<grpc::Channel> channel( |
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grpc::CreateChannel(server_address, grpc::InsecureChannelCredentials())); |
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std::unique_ptr<MetricsService::Stub> stub(MetricsService::NewStub(channel)); |
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grpc::ClientContext context; |
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EmptyMessage message; |
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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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int idx = 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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gpr_log(GPR_INFO, "Gauge: %d (%s: %ld)", ++idx, |
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gauge_response.name().c_str(), gauge_response.long_value()); |
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overall_qps += gauge_response.long_value(); |
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} else { |
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gpr_log(GPR_INFO, "Gauge %s is not a long value", |
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gauge_response.name().c_str()); |
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} |
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} |
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gpr_log(GPR_INFO, "OVERALL: %ld", overall_qps); |
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const grpc::Status status = reader->Finish(); |
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if (!status.ok()) { |
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gpr_log(GPR_ERROR, "Error in getting metrics from the client"); |
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} |
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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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// Make sure server_addresses flag is not empty |
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if (FLAGS_metrics_server_address.empty()) { |
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gpr_log( |
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GPR_ERROR, |
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"Cannot connect to the Metrics server. Please pass the address of the" |
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"metrics server to connect to via the 'metrics_server_address' flag"); |
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return 1; |
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} |
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PrintMetrics(FLAGS_metrics_server_address); |
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return 0; |
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}
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