transportfactory.cc

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/*
 * Copyright (c) 2013,2015 - Adjacent Link LLC, Bridgewater, New Jersey
 * Copyright (c) 2008-2009 - DRS CenGen, LLC, Columbia, Maryland
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions
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 *
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 *   notice, this list of conditions and the following disclaimer.
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 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 */

#include "transportfactory.h"
#include <dlfcn.h>

EMANE::TransportFactory::TransportFactory(const std::string & sLibraryName):
  pLibHandle_{},
  createTransportFunc_{},
  destroyTransportFunc_{}
{
   if((pLibHandle_ = dlopen(sLibraryName.c_str(), RTLD_NOW)) == 0)
    {
      throw Utils::FactoryException(dlerror());
    }

  if((createTransportFunc_ = 
      reinterpret_cast<CreateTransportFunc>((void (*)())(dlsym(pLibHandle_,"create")))) == 0)
    {
      dlclose(pLibHandle_);
      throw makeException<Utils::FactoryException>("%s missing create symbol. (Missing DECLARE_TRANSPORT()?)",
                                                   sLibraryName.c_str());
    }

  if((destroyTransportFunc_ = 
      reinterpret_cast<DestroyTransportFunc>((void (*)())dlsym(pLibHandle_,"destroy"))) == 0)
    {
      dlclose(pLibHandle_);
      throw makeException<Utils::FactoryException>("%s missing destroy symbol. (Missing DECLARE_TRANSPORT()?)",
                                                   sLibraryName.c_str());
    }
}

EMANE::TransportFactory::~TransportFactory()
{
  dlclose(pLibHandle_);
}

EMANE::Transport * EMANE::TransportFactory::createTransport(NEMId id, PlatformServiceProvider *pPlatformService) const
{
  return createTransportFunc_(id, pPlatformService);
}

void EMANE::TransportFactory::destoryTransport(Transport * pTransport) const
{
  destroyTransportFunc_(pTransport);
}