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/*
PluginManager.cpp
Copyright (C) 2009 Zdenek Prikryl (zprikryl@redhat.com)
Copyright (C) 2009 RedHat 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; either version 2 of the License, or
(at your option) any later version.
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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <iostream>
#include "PluginManager.h"
#include <dirent.h>
#include <stdio.h>
#include <sys/types.h>
CPluginManager::CPluginManager(const std::string& pPlugisConfDir,
const std::string& pPlugisLibDir) :
m_sPlugisConfDir(pPlugisConfDir),
m_sPlugisLibDir(pPlugisLibDir)
{}
CPluginManager::~CPluginManager()
{
map_crash_catcher_plugins_t::iterator it_p;
while ((it_p = m_mapCrashCatcherPlugins.begin()) != m_mapCrashCatcherPlugins.end())
{
std::string pluginName = it_p->first;
UnLoadPlugin(pluginName);
}
}
void CPluginManager::LoadPlugins()
{
DIR *dir = opendir(m_sPlugisConfDir.c_str());
struct dirent *dent = NULL;
if (dir != NULL)
{
while ((dent = readdir(dir)) != NULL)
{
if (dent->d_type == DT_REG)
{
std::string name = dent->d_name;
std::string extension = name.substr(name.length()-sizeof(PLUGINS_CONF_EXTENSION)+1);
if (extension == PLUGINS_CONF_EXTENSION)
{
name.erase(name.length()-sizeof(PLUGINS_CONF_EXTENSION));
LoadPlugin(name);
}
}
}
closedir(dir);
}
}
void CPluginManager::LoadPlugin(const std::string& pName)
{
if (m_mapCrashCatcherPlugins.find(pName) == m_mapCrashCatcherPlugins.end())
{
CCrashCatcherPlugin* crashCatcherPlugin = NULL;
CPlugin* plugin = NULL;
try
{
std::string libPath = m_sPlugisLibDir + "/lib" + pName + "." + PLUGINS_LIB_EXTENSIONS;
crashCatcherPlugin = new CCrashCatcherPlugin(libPath);
if (crashCatcherPlugin->GetMagicNumber() != PLUGINS_MAGIC_NUMBER)
{
throw std::string("non-compatible plugin");
}
crashCatcherPlugin->LoadSettings(m_sPlugisConfDir + "/" + pName + "." + PLUGINS_CONF_EXTENSION);
std::cerr << "Loaded Plugin " << pName << " (" << crashCatcherPlugin->GetVersion() << ") " << "succesfully loaded." << std::endl;
std::cerr << " Description: " << crashCatcherPlugin->GetDescription() << std::endl;
std::cerr << " Email: " << crashCatcherPlugin->GetEmail() << std::endl;
std::cerr << " WWW: " << crashCatcherPlugin->GetWWW() << std::endl;
m_mapCrashCatcherPlugins[pName] = crashCatcherPlugin;
if (crashCatcherPlugin->IsEnabled())
{
plugin = crashCatcherPlugin->PluginNew();
plugin->Init(crashCatcherPlugin->GetSettings());
RegisterPlugin(plugin, pName, crashCatcherPlugin->GetType());
}
}
catch (std::string sError)
{
if (plugin != NULL)
{
delete plugin;
}
if (crashCatcherPlugin != NULL)
{
delete plugin;
}
std::cerr << "Failed to load plugin " << pName << " (" << sError << ")." << std::endl;
}
}
}
void CPluginManager::UnLoadPlugin(const std::string& pName)
{
if (m_mapCrashCatcherPlugins.find(pName) != m_mapCrashCatcherPlugins.end())
{
UnRegisterPlugin(pName, m_mapCrashCatcherPlugins[pName]->GetType());
delete m_mapCrashCatcherPlugins[pName];
m_mapCrashCatcherPlugins.erase(pName);
std::cerr << "Plugin " << pName << " sucessfully unloaded." << std::endl;
}
}
void CPluginManager::RegisterPlugin(CPlugin* pPlugin,
const std::string pName,
const plugin_type_t& pPluginType)
{
switch (pPluginType)
{
case LANGUAGE:
{
m_mapLanguages[pName] = (CLanguage*)pPlugin;
std::cerr << "Registred Language plugin " << pName << std::endl;
}
break;
case REPORTER:
{
m_mapReporters[pName] = (CReporter*)pPlugin;
std::cerr << "Registred Reporter plugin " << pName << std::endl;
}
break;
case APPLICATION:
{
m_mapApplications[pName] = (CApplication*)pPlugin;
std::cerr << "Registred Application plugin " << pName << std::endl;
}
break;
case DATABASE:
{
m_mapDatabases[pName] = (CDatabase*)pPlugin;
std::cerr << "Registred Database plugin " << pName << std::endl;
}
break;
default:
{
std::cerr << "Trying to register unknown type of plugin." << std::endl;
}
break;
}
}
void CPluginManager::UnRegisterPlugin(const std::string pName, const plugin_type_t& pPluginType)
{
switch (pPluginType)
{
case LANGUAGE:
{
if (m_mapLanguages.find(pName) != m_mapLanguages.end())
{
m_mapLanguages[pName]->DeInit();
delete m_mapLanguages[pName];
m_mapLanguages.erase(pName);
std::cerr << "UnRegistred Language plugin " << pName << std::endl;
}
}
break;
case REPORTER:
{
if (m_mapReporters.find(pName) != m_mapReporters.end())
{
m_mapReporters[pName]->DeInit();
delete m_mapReporters[pName];
m_mapReporters.erase(pName);
std::cerr << "UnRegistred Reporter plugin " << pName << std::endl;
}
}
break;
case APPLICATION:
{
if (m_mapApplications.find(pName) != m_mapApplications.end())
{
m_mapApplications[pName]->DeInit();
delete m_mapApplications[pName];
m_mapApplications.erase(pName);
std::cerr << "UnRegistred Application plugin " << pName << std::endl;
}
}
break;
case DATABASE:
{
if (m_mapDatabases.find(pName) != m_mapDatabases.end())
{
m_mapDatabases[pName]->DeInit();
delete m_mapDatabases[pName];
m_mapDatabases.erase(pName);
std::cerr << "UnRegistred Database plugin " << pName << std::endl;
}
}
break;
default:
std::cerr << "Trying to unregister unknown type of plugin." << std::endl;
break;
}
}
CLanguage* CPluginManager::GetLanguage(const std::string& pName)
{
if (m_mapLanguages.find(pName) != m_mapLanguages.end())
{
return m_mapLanguages[pName];
}
return NULL;
}
CReporter* CPluginManager::GetReporter(const std::string& pName)
{
if (m_mapReporters.find(pName) != m_mapReporters.end())
{
return m_mapReporters[pName];
}
return NULL;
}
CApplication* CPluginManager::GetApplication(const std::string& pName)
{
if (m_mapApplications.find(pName) != m_mapApplications.end())
{
return m_mapApplications[pName];
}
return NULL;
}
CDatabase* CPluginManager::GetDatabase(const std::string& pName)
{
if (m_mapDatabases.find(pName) != m_mapDatabases.end())
{
return m_mapDatabases[pName];
}
return NULL;
}
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