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 *
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 *
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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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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include <grpc++/async_server.h>

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

namespace grpc {

AsyncServer::AsyncServer(CompletionQueue* cc)
    : started_(false), shutdown_(false) {
  server_ = grpc_server_create(cc->cq(), nullptr);
}

AsyncServer::~AsyncServer() {
  std::unique_lock<std::mutex> lock(shutdown_mu_);
  if (started_ && !shutdown_) {
    lock.unlock();
    Shutdown();
  }
  grpc_server_destroy(server_);
}

void AsyncServer::AddPort(const grpc::string& addr) {
  GPR_ASSERT(!started_);
  int success = grpc_server_add_http2_port(server_, addr.c_str());
  GPR_ASSERT(success);
}

void AsyncServer::Start() {
  GPR_ASSERT(!started_);
  started_ = true;
  grpc_server_start(server_);
}

void AsyncServer::RequestOneRpc() {
  GPR_ASSERT(started_);
  std::unique_lock<std::mutex> lock(shutdown_mu_);
  if (shutdown_) {
    return;
  }
  lock.unlock();
  grpc_call_error err = grpc_server_request_call(server_, nullptr);
  GPR_ASSERT(err == GRPC_CALL_OK);
}

void AsyncServer::Shutdown() {
  std::unique_lock<std::mutex> lock(shutdown_mu_);
  if (started_ && !shutdown_) {
    shutdown_ = true;
    lock.unlock();
    // TODO(yangg) should we shutdown without start?
    grpc_server_shutdown(server_);
  }
}

}  // namespace grpc