PluginManager.cpp

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/*
 * PluginManager.cpp
 *
 *  Created on: Jul 28, 2016
 *      Author: mschefer
 */
 
#include "SEFramework/Plugin/PluginManager.h"
 
#include <iostream>
#include <string>
#include <fstream>
 
#if USE_BOOST_DLL
#include <boost/dll/import.hpp>
#endif
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
 
#include "ElementsKernel/Logging.h"
#include "Configuration/ConfigManager.h"
 
#include "SEFramework/Plugin/Plugin.h"
 
namespace SourceXtractor {
 
std::vector<std::unique_ptr<Plugin>> PluginManager::s_static_plugins;
 
static Elements::Logging logger = Elements::Logging::getLogger("PluginManager");
 
#if USE_BOOST_DLL
std::vector<boost::dll::shared_library> PluginManager::s_loaded_plugins;
#endif
 
void PluginManager::loadPlugins() {
  // load staticly registered plugins
  for (auto& static_plugin : s_static_plugins) {
    static_plugin->registerPlugin(*this);
  }
 
#if USE_BOOST_DLL
  typedef std::shared_ptr<Plugin> (pluginapi_create_t)();
 
  // load dynamic plugins
  auto load_mode = boost::dll::load_mode::append_decorations | boost::dll::load_mode::search_system_folders;
  for (auto& plugin_name : m_plugin_list) {
    boost::dll::shared_library lib;
 
    // Try on the explicit path first
    if (!m_plugin_path.empty()) {
      auto full_path = m_plugin_path / plugin_name;
      try {
        lib.load(full_path, load_mode);
      } catch (const boost::system::system_error&) {
        // ignore
      }
    }
    // Try on the system path. This time, propagate the failure
    if (!lib.is_loaded()) {
      lib.load(plugin_name, load_mode);
    }
 
    auto creator = lib.get_alias<pluginapi_create_t>("create_plugin");
    auto plugin = creator();
    auto id_string = plugin->getIdString();
    logger.info() << "Registering plugin " << id_string;
    plugin->registerPlugin(*this);
    s_loaded_plugins.push_back(lib);
  }
 
#endif
}
 
}