test/cpp/qps/server.cc

/*
 *
 * Copyright 2015, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <sys/signal.h>
#include <thread>

#include <unistd.h>

#include <gflags/gflags.h>
#include <grpc/support/alloc.h>
#include <grpc/support/host_port.h>
#include <grpc++/config.h>
#include <grpc++/server.h>
#include <grpc++/server_builder.h>
#include <grpc++/server_context.h>
#include <grpc++/status.h>
#include <grpc++/stream.h>
#include "src/cpp/server/thread_pool.h"
#include "test/core/util/grpc_profiler.h"
#include "test/cpp/qps/qpstest.pb.h"
#include "test/cpp/qps/timer.h"

#include <grpc/grpc.h>
#include <grpc/support/log.h>

DEFINE_int32(port, 0, "Server port.");
DEFINE_int32(driver_port, 0, "Server driver port.");

using grpc::Server;
using grpc::ServerBuilder;
using grpc::ServerContext;
using grpc::ServerReaderWriter;
using grpc::ThreadPool;
using grpc::testing::Payload;
using grpc::testing::PayloadType;
using grpc::testing::ServerStats;
using grpc::testing::SimpleRequest;
using grpc::testing::SimpleResponse;
using grpc::testing::StatsRequest;
using grpc::testing::TestService;
using grpc::testing::QpsServer;
using grpc::testing::ServerArgs;
using grpc::testing::ServerStats;
using grpc::testing::ServerStatus;
using grpc::Status;

// In some distros, gflags is in the namespace google, and in some others,
// in gflags. This hack is enabling us to find both.
namespace google { }
namespace gflags { }
using namespace google;
using namespace gflags;

static bool got_sigint = false;

static void sigint_handler(int x) { got_sigint = 1; }

static bool SetPayload(PayloadType type, int size, Payload* payload) {
  PayloadType response_type = type;
  // TODO(yangg): Support UNCOMPRESSABLE payload.
  if (type != PayloadType::COMPRESSABLE) {
    return false;
  }
  payload->set_type(response_type);
  std::unique_ptr<char[]> body(new char[size]());
  payload->set_body(body.get(), size);
  return true;
}

namespace {

class TestServiceImpl GRPC_FINAL : public TestService::Service {
 public:
  Status UnaryCall(ServerContext* context, const SimpleRequest* request,
                   SimpleResponse* response) override {
    if (request->has_response_size() && request->response_size() > 0) {
      if (!SetPayload(request->response_type(), request->response_size(),
                      response->mutable_payload())) {
        return Status(grpc::StatusCode::INTERNAL, "Error creating payload.");
      }
    }
    return Status::OK;
  }
};

}  // namespace

class ServerImpl : public QpsServer::Service {
 public:
  Status RunServer(ServerContext* ctx, ServerReaderWriter<ServerStatus, ServerArgs>* stream) {
    ServerArgs args;
    if (!stream->Read(&args)) return Status::OK;

    std::lock_guard<std::mutex> lock(server_mu_);

    char* server_address = NULL;
    gpr_join_host_port(&server_address, "::", FLAGS_port);

    TestServiceImpl service;

    ServerBuilder builder;
    builder.AddPort(server_address);
    builder.RegisterService(&service);

    std::unique_ptr<ThreadPool> pool(new ThreadPool(args.config().threads()));
    builder.SetThreadPool(pool.get());

    auto server = builder.BuildAndStart();
    gpr_log(GPR_INFO, "Server listening on %s\n", server_address);

    gpr_free(server_address);

    ServerStatus status;
    status.set_port(FLAGS_port);
    if (!stream->Write(status)) return Status(grpc::UNKNOWN);

    grpc_profiler_start("qps_server.prof");
    Timer timer;

    if (stream->Read(&args)) {
      gpr_log(GPR_ERROR, "Got a server request, but not expecting one");
      return Status(grpc::UNKNOWN);
    }

    auto timer_result = timer.Mark();
    grpc_profiler_stop();

    auto* stats = status.mutable_stats();
    stats->set_time_elapsed(timer_result.wall);
    stats->set_time_system(timer_result.system);
    stats->set_time_user(timer_result.user);
    stream->Write(status);
    return Status::OK;
  }

 private:
  std::mutex server_mu_;
};

static void RunServer() {
  char* server_address = NULL;
  gpr_join_host_port(&server_address, "::", FLAGS_driver_port);

  ServerImpl service;

  ServerBuilder builder;
  builder.AddPort(server_address);
  builder.RegisterService(&service);

  gpr_free(server_address);

  auto server = builder.BuildAndStart();

  while (!got_sigint) {
    sleep(5);
  }
}

int main(int argc, char** argv) {
  signal(SIGINT, sigint_handler);

  grpc_init();
  ParseCommandLineFlags(&argc, &argv, true);

  GPR_ASSERT(FLAGS_port != 0);
  RunServer();

  grpc_shutdown();
  return 0;
}