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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems
*
* This program 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; version 2 of the License.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef DRIZZLED_PLUGIN_REGISTRY_H
#define DRIZZLED_PLUGIN_REGISTRY_H
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#include "drizzled/gettext.h"
#include "drizzled/unireg.h"
#include "drizzled/errmsg_print.h"
namespace drizzled
{
namespace plugin
{
class Module;
class Plugin;
class Registry
{
private:
std::map<std::string, Module *> module_map;
std::map<std::string, const Plugin *> plugin_registry;
Module *current_module;
Registry()
: module_map(),
plugin_registry(),
current_module(NULL)
{ }
Registry(const Registry&);
Registry& operator=(const Registry&);
public:
static plugin::Registry& singleton()
{
static plugin::Registry *registry= new plugin::Registry();
return *registry;
}
static void shutdown()
{
plugin::Registry& registry= singleton();
delete ®istry;
}
Module *find(const LEX_STRING *name);
void add(Module *module);
void setCurrentModule(Module *module)
{
current_module= module;
}
void clearCurrentModule()
{
current_module= NULL;
}
std::vector<Module *> getList(bool active);
const std::map<std::string, const Plugin *> &getPluginsMap() const
{
return plugin_registry;
}
template<class T>
void add(T *plugin)
{
plugin->setModule(current_module);
bool failed= false;
std::string plugin_name(plugin->getName());
std::transform(plugin_name.begin(), plugin_name.end(),
plugin_name.begin(), ::tolower);
if (plugin_registry.find(plugin_name) != plugin_registry.end())
{
errmsg_printf(ERRMSG_LVL_ERROR,
_("Loading plugin %s failed: a plugin by that name already "
"exists."), plugin->getName().c_str());
failed= true;
}
if (T::addPlugin(plugin))
failed= true;
if (failed)
{
errmsg_printf(ERRMSG_LVL_ERROR,
_("Fatal error: Failed initializing %s plugin."),
plugin->getName().c_str());
unireg_abort(1);
}
plugin_registry.insert(std::pair<std::string, const Plugin *>(plugin_name, plugin));
}
template<class T>
void remove(T *plugin)
{
std::string plugin_name(plugin->getName());
std::transform(plugin_name.begin(), plugin_name.end(),
plugin_name.begin(), ::tolower);
T::removePlugin(plugin);
plugin_registry.erase(plugin_name);
}
};
} /* end namespace plugin */
} /* end namespace drizzled */
#endif /* DRIZZLED_PLUGIN_REGISTRY_H */
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