1 files changed, 118 insertions, 0 deletions
diff --git a/test/cpp/microbenchmarks/bm_opencensus_plugin.cc b/test/cpp/microbenchmarks/bm_opencensus_plugin.cc
new file mode 100644
index 0000000000..9d42eb891d
--- /dev/null
+++ b/test/cpp/microbenchmarks/bm_opencensus_plugin.cc
@@ -0,0 +1,118 @@
+/*
+ *
+ * Copyright 2018 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.
+ *
+ */
+
+#include <benchmark/benchmark.h>
+#include <string>
+#include <thread>  // NOLINT
+
+#include "absl/base/call_once.h"
+#include "absl/strings/str_cat.h"
+#include "include/grpc++/grpc++.h"
+#include "opencensus/stats/stats.h"
+#include "src/cpp/ext/filters/census/grpc_plugin.h"
+#include "src/proto/grpc/testing/echo.grpc.pb.h"
+#include "test/cpp/microbenchmarks/helpers.h"
+
+absl::once_flag once;
+void RegisterOnce() { absl::call_once(once, grpc::RegisterOpenCensusPlugin); }
+
+class EchoServer final : public grpc::testing::EchoTestService::Service {
+  grpc::Status Echo(grpc::ServerContext* context,
+                    const grpc::testing::EchoRequest* request,
+                    grpc::testing::EchoResponse* response) override {
+    if (request->param().expected_error().code() == 0) {
+      response->set_message(request->message());
+      return grpc::Status::OK;
+    } else {
+      return grpc::Status(static_cast<grpc::StatusCode>(
+                              request->param().expected_error().code()),
+                          "");
+    }
+  }
+};
+
+// An EchoServerThread object creates an EchoServer on a separate thread and
+// shuts down the server and thread when it goes out of scope.
+class EchoServerThread final {
+ public:
+  EchoServerThread() {
+    grpc::ServerBuilder builder;
+    int port;
+    builder.AddListeningPort("[::]:0", grpc::InsecureServerCredentials(),
+                             &port);
+    builder.RegisterService(&service_);
+    server_ = builder.BuildAndStart();
+    if (server_ == nullptr || port == 0) {
+      std::abort();
+    }
+    server_address_ = absl::StrCat("[::]:", port);
+    server_thread_ = std::thread(&EchoServerThread::RunServerLoop, this);
+  }
+
+  ~EchoServerThread() {
+    server_->Shutdown();
+    server_thread_.join();
+  }
+
+  const std::string& address() { return server_address_; }
+
+ private:
+  void RunServerLoop() { server_->Wait(); }
+
+  std::string server_address_;
+  EchoServer service_;
+  std::unique_ptr<grpc::Server> server_;
+  std::thread server_thread_;
+};
+
+static void BM_E2eLatencyCensusDisabled(benchmark::State& state) {
+  EchoServerThread server;
+  std::unique_ptr<grpc::testing::EchoTestService::Stub> stub =
+      grpc::testing::EchoTestService::NewStub(grpc::CreateChannel(
+          server.address(), grpc::InsecureChannelCredentials()));
+
+  grpc::testing::EchoResponse response;
+  for (auto _ : state) {
+    grpc::testing::EchoRequest request;
+    grpc::ClientContext context;
+    grpc::Status status = stub->Echo(&context, request, &response);
+  }
+}
+BENCHMARK(BM_E2eLatencyCensusDisabled);
+
+static void BM_E2eLatencyCensusEnabled(benchmark::State& state) {
+  RegisterOnce();
+  // This we can safely repeat, and doing so clears accumulated data to avoid
+  // initialization costs varying between runs.
+  grpc::RegisterOpenCensusViewsForExport();
+
+  EchoServerThread server;
+  std::unique_ptr<grpc::testing::EchoTestService::Stub> stub =
+      grpc::testing::EchoTestService::NewStub(grpc::CreateChannel(
+          server.address(), grpc::InsecureChannelCredentials()));
+
+  grpc::testing::EchoResponse response;
+  for (auto _ : state) {
+    grpc::testing::EchoRequest request;
+    grpc::ClientContext context;
+    grpc::Status status = stub->Echo(&context, request, &response);
+  }
+}
+BENCHMARK(BM_E2eLatencyCensusEnabled);
+
+BENCHMARK_MAIN();