ExplicitRoutingTable.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 "ExplicitRoutingTable.h"
#include "ExplicitRoute.h"
#include "ByteString.h"
#include "Bundle.h"
#include "Link.h"
#include "Exception.h"

using namespace DTN;

ExplicitRoutingTable::ExplicitRoutingTable()
{
}

ExplicitRoutingTable::~ExplicitRoutingTable()
{
   RouteMap::iterator end = m_routes.end();
   RouteMap::iterator itr = m_routes.begin();
   for ( ; itr != end ; ++itr )
   {
      if ( 0 != itr->second )
      {
         delete itr->second;
      }
   }
}

Link&
ExplicitRoutingTable::target( const Bundle& b ) const
{
   RouteMap::iterator rtItr = m_routes.find( b.destination() );

   if ( m_routes.end() == rtItr )
   {
      throw NoRoute( __FILE__ , __LINE__ );
   }

   // These are errors.
   if ( 0 == rtItr->second )
   {
      throw Exception( __FILE__ , __LINE__ );
   }
   if ( ! rtItr->second->matches( b ) )
   {
      throw Exception( __FILE__ , __LINE__ );
   }

   return rtItr->second->link();
}

void
ExplicitRoutingTable::addRoute( ExplicitRoute* r )
{
   if ( 0 != r )
   {
      m_routes.insert( RouteMap::value_type( r->target(), r ) );
   }
}

void
ExplicitRoutingTable::delRoute( const RouteMap::key_type& dest )
{
   m_routes.erase( dest );
}

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