eelloaderpluginfactory.cc

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/*
 * Copyright (c) 2013,2016 - Adjacent Link LLC, Bridgewater, New Jersey
 * Copyright (c) 2010 - DRS CenGen, LLC, Columbia, Maryland
 * All rights reserved.
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#include "eelloaderpluginfactory.h"
#include <dlfcn.h>
#include <sstream>

EMANE::Generators::EEL::LoaderPluginFactory::LoaderPluginFactory():
  pLibHandle_{},
  createPluginFunc_{},
  destroyPluginFunc_{}{}

void EMANE::Generators::EEL::LoaderPluginFactory::construct(const std::string & sLibraryName)
{
  if((pLibHandle_ = dlopen(sLibraryName.c_str(), RTLD_NOW)) == 0)
    {
      throw Utils::FactoryException(dlerror());
    }

  if((createPluginFunc_ =
      reinterpret_cast<createPluginFunc>((void (*)())(dlsym(pLibHandle_,"create")))) == 0)
    {
      dlclose(pLibHandle_);

      std::stringstream sstream;

      sstream<<sLibraryName
             <<" missing create symbol. (Missing DECLARE_EEL_LOADER_PLUGIN()?)"<<std::ends;

      throw Utils::FactoryException(sstream.str());
    }

  if((destroyPluginFunc_ =
      reinterpret_cast<destroyPluginFunc>((void (*)())dlsym(pLibHandle_,"destroy"))) == 0)
    {
      dlclose(pLibHandle_);

      std::stringstream sstream;

      sstream<<sLibraryName
             <<" missing destroy symbol. (Missing DECLARE_EEL_LOADER_PLUGIN()?)"<<std::ends;

      throw Utils::FactoryException(sstream.str());
    }
}

EMANE::Generators::EEL::LoaderPluginFactory::~LoaderPluginFactory()
{
  dlclose(pLibHandle_);
}

EMANE::Generators::EEL::LoaderPlugin * EMANE::Generators::EEL::LoaderPluginFactory::createPlugin() const
{
  return createPluginFunc_();
}

void EMANE::Generators::EEL::LoaderPluginFactory::destoryPlugin(LoaderPlugin * pPlugin) const
{
  destroyPluginFunc_(pPlugin);
}