PersistentBundleStore.h

// 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.

#ifndef __DTN_PERSISTENT_BUNDLE_STORE_H__
#define __DTN_PERSISTENT_BUNDLE_STORE_H__

#include "config.h"
#include "BundleStore.h"

namespace DTN
{
   class PersistentBundleStore : public BundleStore
   {
      public :
         PersistentBundleStore( Node* owner ) : BundleStore(owner) {}
         virtual ~PersistentBundleStore() {}

      protected :
         virtual BundlePointer p_addBundle( Bundle* b ) = 0;
         virtual void p_deleteBundle( Bundle* b ) = 0;
         virtual BundlePointer p_getPointer( const BundlePointer& p ) = 0;
         virtual BundlePointer p_getPointer( const ByteString& sender,
                                             uint32_t seqNum ) = 0;
         virtual bool p_validatePointer( const BundlePointer& p ) = 0;
         virtual size_t p_bytesUsed() = 0;
         virtual size_t p_bundles() = 0;
         virtual void p_shrinkStore( size_t s ) = 0;

         virtual void clean();

      private :
         BundlePointer addBundle( Bundle* b );
         void deleteBundle( Bundle* b );
         BundlePointer getPointer( const BundlePointer& p );
         BundlePointer getPointer( const ByteString& sender,
                                   uint32_t seqNum );
         bool validatePointer( const BundlePointer& p );
         size_t bytesUsed( bool cleanup = true );
         size_t bundles( bool cleanup = true );
         void shrinkStore( size_t s );
   };
};

#endif // __DTN_PERSISTENT_BUNDLE_STORE_H__

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