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 *
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 *
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 * 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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 * this software without specific prior written permission.
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#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/server.h"
#include "test/cpp/qps/timer.h"

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

namespace grpc {
namespace testing {

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;
}

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;
  }
};

class SynchronousServer GRPC_FINAL : public grpc::testing::Server {
 public:
  SynchronousServer(const ServerConfig& config, int port) : thread_pool_(config.threads()), impl_(MakeImpl(port)), timer_(new Timer) {}

  ServerStats Mark() GRPC_OVERRIDE {
    std::unique_ptr<Timer> timer(new Timer);
    timer.swap(timer_);

    auto timer_result = timer->Mark();

    ServerStats stats;
    stats.set_time_elapsed(timer_result.wall);
    stats.set_time_system(timer_result.system);
    stats.set_time_user(timer_result.user);
    return stats;
  }

 private:
  std::unique_ptr<grpc::Server> MakeImpl(int port) {
    ServerBuilder builder;

    char* server_address = NULL;
    gpr_join_host_port(&server_address, "::", port);
    builder.AddPort(server_address);
    gpr_free(server_address);

    builder.RegisterService(&service_);

    return builder.BuildAndStart();
  }

  TestServiceImpl service_;
  ThreadPool thread_pool_;
  std::unique_ptr<grpc::Server> impl_;
  std::unique_ptr<Timer> timer_;
};

std::unique_ptr<grpc::testing::Server> CreateSynchronousServer(const ServerConfig& config, int port) {
  return std::unique_ptr<Server>(new SynchronousServer(config, port));
}

}  // namespace testing
}  // namespace grpc