pxmlw6n2f/Gazebo_Distributed_MPI/gazebo/transport/PublicationTransport.hh

103 lines
3.2 KiB
C++

/*
* Copyright (C) 2012 Open Source Robotics Foundation
*
* 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 _PUBLICATIONTRANSPORT_HH_
#define _PUBLICATIONTRANSPORT_HH_
#include <boost/function.hpp>
#include <boost/shared_ptr.hpp>
#include <string>
#include "gazebo/transport/Connection.hh"
#include "gazebo/common/Event.hh"
#include "gazebo/util/system.hh"
namespace gazebo
{
namespace transport
{
/// \addtogroup gazebo_transport
/// \{
/// \class PublicationTransport PublicationTransport.hh
/// transport/transport.hh
/// \brief Reads data from a remote advertiser, and passes the data
/// along to local subscribers
class GZ_TRANSPORT_VISIBLE PublicationTransport
{
/// \brief Constructor
/// \param[in] _topic Topic that we're publishing
/// \param[in] _topic Type of the topic that we're publishing
public: PublicationTransport(const std::string &_topic,
const std::string &_msgType);
/// \brief Destructor
public: virtual ~PublicationTransport();
/// \brief Initialize the transport
/// \param[in] _conn The underlying connection.
/// \param[in] _latched True to grab the last message sent on the
/// topic.
public: void Init(const ConnectionPtr &_conn, bool _latched);
/// \brief Finalize the transport
public: void Fini();
/// \brief Add a callback to the transport
/// \param[in] _cb The callback to be added
public: void AddCallback(
const boost::function<void(const std::string &)> &_cb);
/// \brief Get the underlying connection
/// \return Pointer to the underlying connection
public: const ConnectionPtr GetConnection() const;
/// \brief Get the topic name
/// \return The topic name
public: std::string GetTopic() const;
/// \brief Get the topic type
/// \return The topic type
public: std::string GetMsgType() const;
/// \brief Called when data is published.
/// \param[in] _data Data to be published.
private: void OnPublish(const std::string &_data);
/// \brief The topic for this publication transport.
private: std::string topic;
/// \brief The type of messages that can be processed.
private: std::string msgType;
/// \brief The connection for the publication transport
private: ConnectionPtr connection;
/// \brief Callback used when OnPublish is called.
private: boost::function<void (const std::string &)> callback;
/// \brief Counter to give the publication transport a unique id.
private: static int counter;
/// \brief The unique id for the publication transport.
private: int id;
};
/// \}
}
}
#endif