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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, Inc.
*
* 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
*/
#pragma once
#include <string>
#include <vector>
#include <map>
#include <algorithm>
#include <iostream>
#include <boost/scoped_ptr.hpp>
#include <drizzled/gettext.h>
#include <drizzled/unireg.h>
#include <drizzled/errmsg_print.h>
#include <drizzled/plugin/plugin.h>
namespace drizzled
{
namespace module
{
class Module;
class Library;
class Graph;
class Registry
{
public:
typedef std::map<std::string, Library *> LibraryMap;
typedef std::map<std::string, Module *> ModuleMap;
typedef std::vector<Module *> ModuleList;
private:
LibraryMap library_registry_;
ModuleMap module_registry_;
boost::scoped_ptr<Graph> depend_graph_;
plugin::Plugin::map plugin_registry;
bool deps_built_;
Registry();
Registry(const Registry&);
Registry& operator=(const Registry&);
~Registry();
void buildDeps();
public:
static Registry& singleton()
{
static Registry *registry= new Registry();
return *registry;
}
void copy(plugin::Plugin::vector &arg);
static void shutdown();
Module *find(std::string name);
void add(Module *module);
void remove(Module *module);
std::vector<Module *> getList();
const plugin::Plugin::map &getPluginsMap() const
{
return plugin_registry;
}
const ModuleMap &getModulesMap() const
{
return module_registry_;
}
Library *addLibrary(const std::string &plugin_name, bool builtin= false);
void removeLibrary(const std::string &plugin_name);
Library *findLibrary(const std::string &plugin_name) const;
void shutdownModules();
template<class T>
void add(T *plugin)
{
bool failed= false;
std::string plugin_type(plugin->getTypeName());
std::transform(plugin_type.begin(), plugin_type.end(),
plugin_type.begin(), ::tolower);
std::string plugin_name(plugin->getName());
std::transform(plugin_name.begin(), plugin_name.end(),
plugin_name.begin(), ::tolower);
if (plugin_registry.find(std::make_pair(plugin_type, plugin_name)) != plugin_registry.end())
{
errmsg_printf(error::ERROR,
_("Loading plugin %s failed: a %s plugin by that name "
"already exists.\n"),
plugin->getTypeName().c_str(),
plugin->getName().c_str());
failed= true;
}
if (T::addPlugin(plugin))
{
failed= true;
}
if (failed)
{
errmsg_printf(error::ERROR,
_("Fatal error: Failed initializing %s::%s plugin.\n"),
plugin->getTypeName().c_str(),
plugin->getName().c_str());
unireg_abort(1);
}
plugin_registry.insert(std::make_pair(std::make_pair(plugin_type, plugin_name), plugin));
}
template<class T>
void remove(T *plugin)
{
std::string plugin_type(plugin->getTypeName());
std::transform(plugin_type.begin(), plugin_type.end(),
plugin_type.begin(), ::tolower);
std::string plugin_name(plugin->getName());
std::transform(plugin_name.begin(), plugin_name.end(),
plugin_name.begin(), ::tolower);
T::removePlugin(plugin);
plugin_registry.erase(std::make_pair(plugin_type, plugin_name));
}
};
} /* namespace module */
} /* namespace drizzled */
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