text: /**
   * Copyright Soramitsu Co., Ltd. 2017 All Rights Reserved.
   * http://soramitsu.co.jp
   *
   * 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.
   */
  
  #ifndef IROHA_TIMER_IMPL_HPP
  #define IROHA_TIMER_IMPL_HPP
  
  #include <rxcpp/rx.hpp>
  #include "consensus/yac/timer.hpp"
  
  namespace iroha {
    namespace consensus {
      namespace yac {
        class TimerImpl : public Timer {
         public:
          TimerImpl() = default;
          TimerImpl(const TimerImpl &) = delete;
          TimerImpl &operator=(const TimerImpl &) = delete;
  
          void invokeAfterDelay(uint64_t millis,
                                std::function<void()> handler) override;
          void deny() override;
  
          ~TimerImpl() override;
  
         private:
          std::function<void()> handler_;
  
          rxcpp::observable<long> timer;
          rxcpp::composite_subscription handle;
        };
      }  // namespace yac
    }    // namespace consensus
  }  // namespace iroha
  
  #endif  // IROHA_TIMER_IMPL_HPP
  