* Author : Maxim Mamontov <faust@stargazer.dp.ua>
*/
-/*
- $Revision: 1.6 $
- $Date: 2010/03/04 12:24:19 $
- $Author: faust $
- */
-
-/*
- * An implementation of RAII store plugin loader
- */
-
#include <dlfcn.h>
+#include "stg/common.h"
+#include "stg/store.h"
#include "store_loader.h"
-#include "common.h"
-#include "store.h"
-#include "settings.h"
+#include "settings_impl.h"
+
+using STG::StoreLoader;
-STORE_LOADER::STORE_LOADER(const SETTINGS & settings)
+StoreLoader::StoreLoader(const SettingsImpl& settings) noexcept
: isLoaded(false),
handle(NULL),
plugin(NULL),
- errorStr(),
storeSettings(settings.GetStoreModuleSettings()),
pluginFileName(settings.GetModulesPath() + "/mod_" + storeSettings.moduleName + ".so")
{
}
-STORE_LOADER::~STORE_LOADER()
+StoreLoader::~StoreLoader()
{
-Unload();
+ unload();
}
-bool STORE_LOADER::Load()
+bool StoreLoader::load() noexcept
{
-printfd(__FILE__, "STORE_LOADER::Load()\n");
-if (isLoaded)
+ if (isLoaded)
{
- return false;
+ errorStr = "Store plugin '" + pluginFileName + "' was already loaded!";
+ printfd(__FILE__, "StoreLoader::load() - %s\n", errorStr.c_str());
+ return false;
}
-if (pluginFileName.empty())
+ if (pluginFileName.empty())
{
- errorStr = "Empty store plugin filename";
- printfd(__FILE__, "STORE_LOADER::Load - %s\n", errorStr.c_str());
- return true;
+ errorStr = "Empty store plugin filename";
+ printfd(__FILE__, "StoreLoader::load() - %s\n", errorStr.c_str());
+ return true;
}
-handle = dlopen(pluginFileName.c_str(), RTLD_NOW);
+ handle = dlopen(pluginFileName.c_str(), RTLD_NOW);
-if (!handle)
+ if (!handle)
{
- errorStr = "Error loading plugin '"
- + pluginFileName + "': '" + dlerror() + "'";
- printfd(__FILE__, "STORE_LOADER::Load - %s\n", errorStr.c_str());
- return true;
+ errorStr = "Error loading plugin '"
+ + pluginFileName + "': '" + dlerror() + "'";
+ printfd(__FILE__, "StoreLoader::Load() - %s\n", errorStr.c_str());
+ return true;
}
-isLoaded = true;
+ isLoaded = true;
-STORE * (*GetStore)();
-GetStore = (STORE * (*)())dlsym(handle, "GetStore");
-if (!GetStore)
+ using Getter = Store* (*)();
+ auto GetStore = reinterpret_cast<Getter>(dlsym(handle, "GetStore"));
+ if (!GetStore)
{
- errorStr = "GetStore not found.";
- printfd(__FILE__, "STORE_LOADER::Load - %s\n", errorStr.c_str());
- return true;
+ errorStr = std::string("GetStore() not found! ") + dlerror();
+ printfd(__FILE__, "StoreLoader::load() - %s\n", errorStr.c_str());
+ return true;
}
-plugin = GetStore();
+ plugin = GetStore();
-if (!plugin)
+ if (!plugin)
{
- errorStr = "NULL store plugin";
- printfd(__FILE__, "STORE_LOADER::Load - %s\n");
- return true;
+ errorStr = "Plugin was not created!";
+ printfd(__FILE__, "StoreLoader::Load() - %s\n");
+ return true;
}
-plugin->SetSettings(storeSettings);
-if (plugin->ParseSettings())
+ plugin->SetSettings(storeSettings);
+ if (plugin->ParseSettings())
{
- errorStr = plugin->GetStrError();
- printfd(__FILE__, "Failed to parse settings. Plugin reports: '%s'\n", errorStr.c_str());
- return true;
+ errorStr = plugin->GetStrError();
+ printfd(__FILE__, "StoreLoader::Load() - Failed to parse settings. Plugin reports: '%s'\n", errorStr.c_str());
+ return true;
}
-return false;
+ return false;
}
-bool STORE_LOADER::Unload()
+bool StoreLoader::unload() noexcept
{
-printfd(__FILE__, "STORE_LOADER::Unload()\n");
-if (!isLoaded)
- {
- return false;
- }
+ if (!isLoaded)
+ return true;
+
+ delete plugin;
-if (dlclose(handle))
+ if (dlclose(handle))
{
- errorStr = "Failed to unload plugin: '";
- errorStr += dlerror();
- errorStr += "'";
- printfd(__FILE__, "STORE_LOADER::Unload - %s\n", errorStr.c_str());
- return true;
+ errorStr = "Failed to unload plugin '";
+ errorStr += pluginFileName + "': ";
+ errorStr += dlerror();
+ printfd(__FILE__, "StoreLoader::Unload() - %s\n", errorStr.c_str());
+ return true;
}
-isLoaded = false;
+ isLoaded = false;
-return false;
+ return false;
}