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create_publisher.hpp
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71 lines (61 loc) · 2.2 KB
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// 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__CREATE_PUBLISHER_HPP_
#define RCLCPP__CREATE_PUBLISHER_HPP_
#include <memory>
#include <string>
#include "rclcpp/node_interfaces/get_node_topics_interface.hpp"
#include "rclcpp/node_interfaces/node_topics_interface.hpp"
#include "rclcpp/node_options.hpp"
#include "rclcpp/publisher_factory.hpp"
#include "rclcpp/publisher_options.hpp"
#include "rclcpp/qos.hpp"
#include "rmw/qos_profiles.h"
namespace rclcpp
{
/// Create and return a publisher of the given MessageT type.
/**
* The NodeT type only needs to have a method called get_node_topics_interface()
* which returns a shared_ptr to a NodeTopicsInterface.
*/
template<
typename MessageT,
typename AllocatorT = std::allocator<void>,
typename PublisherT = rclcpp::Publisher<MessageT, AllocatorT>,
typename NodeT>
std::shared_ptr<PublisherT>
create_publisher(
NodeT & node,
const std::string & topic_name,
const rclcpp::QoS & qos,
const rclcpp::PublisherOptionsWithAllocator<AllocatorT> & options = (
rclcpp::PublisherOptionsWithAllocator<AllocatorT>()
)
)
{
// Extract the NodeTopicsInterface from the NodeT.
using rclcpp::node_interfaces::get_node_topics_interface;
auto node_topics = get_node_topics_interface(node);
// Create the publisher.
auto pub = node_topics->create_publisher(
topic_name,
rclcpp::create_publisher_factory<MessageT, AllocatorT, PublisherT>(options),
qos
);
// Add the publisher to the node topics interface.
node_topics->add_publisher(pub, options.callback_group);
return std::dynamic_pointer_cast<PublisherT>(pub);
}
} // namespace rclcpp
#endif // RCLCPP__CREATE_PUBLISHER_HPP_