node_graph_interface.hpp

Go to the documentation of this file.

// Copyright 2016 Open Source Robotics Foundation, Inc.
//
// 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 RCLCPP__NODE_INTERFACES__NODE_GRAPH_INTERFACE_HPP_
#define RCLCPP__NODE_INTERFACES__NODE_GRAPH_INTERFACE_HPP_

#include <chrono>
#include <map>
#include <string>

#include "rcl/guard_condition.h"

#include "rclcpp/event.hpp"
#include "rclcpp/macros.hpp"
#include "rclcpp/visibility_control.hpp"

namespace rclcpp
{
namespace node_interfaces
{

class NodeGraphInterface
{
public:
  RCLCPP_SMART_PTR_ALIASES_ONLY(NodeGraphInterface)

  

  RCLCPP_PUBLIC
  virtual
  std::map<std::string, std::string>
  get_topic_names_and_types() const = 0;

  RCLCPP_PUBLIC
  virtual
  size_t
  count_publishers(const std::string & topic_name) const = 0;

  RCLCPP_PUBLIC
  virtual
  size_t
  count_subscribers(const std::string & topic_name) const = 0;

  RCLCPP_PUBLIC
  virtual
  const rcl_guard_condition_t *
  get_graph_guard_condition() const = 0;


  RCLCPP_PUBLIC
  virtual
  void
  notify_graph_change() = 0;

  RCLCPP_PUBLIC
  virtual
  void
  notify_shutdown() = 0;


  RCLCPP_PUBLIC
  virtual
  rclcpp::event::Event::SharedPtr
  get_graph_event() = 0;


  RCLCPP_PUBLIC
  virtual
  void
  wait_for_graph_change(
    rclcpp::event::Event::SharedPtr event,
    std::chrono::nanoseconds timeout) = 0;


  RCLCPP_PUBLIC
  virtual
  size_t
  count_graph_users() = 0;
};

}  // namespace node_interfaces
}  // namespace rclcpp

#endif  // RCLCPP__NODE_INTERFACES__NODE_GRAPH_INTERFACE_HPP_