node.h

/* Copyright (c) 2005-2016, Stefan Eilemann <eile@equalizergraphics.com>
 *                          Cedric Stalder <cedric.stalder@gmail.com>
 *                          Daniel Nachbaur <danielnachbaur@gmail.com>
 *
 * This file is part of Collage <https://github.com/Eyescale/Collage>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef CO_NODE_H
#define CO_NODE_H

#include <co/dispatcher.h>        // base class
#include <co/connection.h>        // used in inline template method
#include <co/nodeType.h>          // for NODETYPE_NODE enum
#include <co/types.h>

namespace co
{
namespace detail { class Node; }

class Node : public Dispatcher, public lunchbox::Referenced
{
public:
    CO_API explicit Node( const uint32_t type = co::NODETYPE_NODE );

    CO_API const NodeID& getNodeID() const;

    CO_API uint32_t getType() const;

    bool operator == ( const Node* n ) const; 
    bool isBigEndian() const; 

    CO_API bool isReachable() const;

    CO_API bool isConnected() const;

    CO_API bool isListening() const;

    CO_API bool isClosed() const;

    CO_API bool isClosing() const;

    bool isLocal() const { return isListening(); }

    CO_API void addConnectionDescription( ConnectionDescriptionPtr cd );

    CO_API bool removeConnectionDescription( ConnectionDescriptionPtr cd );

    CO_API ConnectionDescriptions getConnectionDescriptions() const;

    CO_API ConnectionPtr getConnection( const bool multicast = false );

    CO_API OCommand send( const uint32_t cmd, const bool multicast = false);

    CO_API CustomOCommand send( const uint128_t& commandID,
                                const bool multicast = false );

    CO_API void setHostname( const std::string& host );

    CO_API const std::string& getHostname() const;

    CO_API virtual std::string getWorkDir() const;

    CO_API virtual std::string getLaunchQuote() const;

    CO_API int64_t getLastReceiveTime() const;

    CO_API std::string serialize() const;
    CO_API bool deserialize( std::string& data );

protected:
    CO_API virtual ~Node();

    void _addConnectionDescription( ConnectionDescriptionPtr cd );
    bool _removeConnectionDescription( ConnectionDescriptionPtr cd );

    ConnectionPtr _getMulticast() const;

    ConnectionPtr getMulticast();

private:
    detail::Node* const _impl;
    CO_API friend std::ostream& operator << ( std::ostream&, const Node& );

    ConnectionPtr _getConnection( const bool preferMulticast );

    void _addMulticast( NodePtr node, ConnectionPtr connection );
    void _removeMulticast( ConnectionPtr connection );
    void _connectMulticast( NodePtr node );
    void _connectMulticast( NodePtr node, ConnectionPtr connection );
    void _setListening();
    void _setClosing();
    void _setClosed();
    void _connect( ConnectionPtr connection );
    void _disconnect();
    void _setLastReceive( const int64_t time );
    friend class LocalNode;
};

CO_API std::ostream& operator << ( std::ostream& os, const Node& node );
}

namespace lunchbox
{
template<> inline void byteswap( co::Node*& ) { /*NOP*/ }
template<> inline void byteswap( co::NodePtr& ) { /*NOP*/ }
}

#endif // CO_NODE_H