PrefixRoutingEntity.cc

// Copyright 2008 Michael Marsh, University of Maryland.
//
// This file is part of pydtn.
//
// pydtn is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// pydtn 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with pydtn.  If not, see <http://www.gnu.org/licenses/>.
//
// The views and conclusions contained in the software and documentation
// are those of the authors and should not be interpreted as representing
// official policies, either expressed or implied, of the University
// of Maryland.
//
// pydtn extends and embeds the Python interpreter, which is
// Copyright 2001-2006 Python Software Foundation, All Rights Reserved,
// and is released under the PSF License Agreement.
//
// RANLUX random number generation uses the Boost library,
// Copyright 1994-2006 by various authors (details in individual files),
// which is released under the Boost Software License, Version 1.0.

#include "simlpy/interpreter_defs.h"
#include "simlpy/interpreter_hooks.h"

#include <iostream>
#include "PrefixRoutingEntity.h"
#include "WrapNode.h"
#include "WrapLink.h"
#include "parsers.h"
#include "dtn/PrefixRoute.h"
#include "simlpy/SimulationException.h"

PrefixRoutingEntity::PrefixRoutingEntity() :
   RoutingEntity()
{
   m_etable = new DTN::PrefixRoutingTable;
   m_table = m_etable;
}

PrefixRoutingEntity::~PrefixRoutingEntity()
{
}

Entity*
PrefixRoutingEntity::create() const
{
   return new PrefixRoutingEntity;
}

void
PrefixRoutingEntity::configure( const ArgList& args )
{
   unsigned int nargs = args.size();
   if ( nargs < 3 )
   {
      std::cerr << "config() takes at least 3 arguments ("
                << nargs << " given)"
                << std::endl;
      throw SimulationException( __FILE__ , __LINE__ );
   }
   std::string command = parse_string(args[0]);
   if ( "route" == command )
   {
      std::string prefixString = parse_string(args[1]);
      DTN::ByteString prefix;
      for ( unsigned int i = 0 ; i < prefixString.length() ; ++i )
      {
         prefix += prefixString[i];
      }

      WrapLink* link = parse_link(args[2]);
      if ( 0 == link )
      {
         std::cerr << "The second argument of config('route',prefix,link) "
                   << "must be a subnet prefix and the third must be a link"
                   << std::endl;
         throw SimulationException( __FILE__ , __LINE__ );
      }

      DTN::PrefixRoute* r = new DTN::PrefixRoute( prefix, &(link->link()) );
      m_etable->addRoute( r );
   }
   else
   {
      std::cerr << "Unrecognized configuration option: " << command
                << std::endl;
      throw SimulationException( __FILE__ , __LINE__ );
   }
}

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