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/*
* Copyright (C) 2008-2015 TrinityCore <http://www.trinitycore.org/>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "DatabaseLoader.h"
#include "DBUpdater.h"
#include "Config.h"
#include <mysqld_error.h>
DatabaseLoader::DatabaseLoader(std::string const& logger, uint32 const defaultUpdateMask)
: _logger(logger), _autoSetup(sConfigMgr->GetBoolDefault("Updates.AutoSetup", true)),
_updateFlags(sConfigMgr->GetIntDefault("Updates.EnableDatabases", defaultUpdateMask))
{
}
template <class T>
DatabaseLoader& DatabaseLoader::AddDatabase(DatabaseWorkerPool<T>& pool, std::string const& name)
{
bool const updatesEnabledForThis = DBUpdater<T>::IsEnabled(_updateFlags);
_open.push(std::make_pair([this, name, updatesEnabledForThis, &pool]() -> bool
{
std::string const dbString = sConfigMgr->GetStringDefault(name + "DatabaseInfo", "");
if (dbString.empty())
{
TC_LOG_ERROR(_logger.c_str(), "Database %s not specified in configuration file!", name.c_str());
return false;
}
uint8 const asyncThreads = uint8(sConfigMgr->GetIntDefault(name + "Database.WorkerThreads", 1));
if (asyncThreads < 1 || asyncThreads > 32)
{
TC_LOG_ERROR(_logger.c_str(), "%s database: invalid number of worker threads specified. "
"Please pick a value between 1 and 32.", name.c_str());
return false;
}
uint8 const synchThreads = uint8(sConfigMgr->GetIntDefault(name + "Database.SynchThreads", 1));
pool.SetConnectionInfo(dbString, asyncThreads, synchThreads);
if (uint32 error = pool.Open())
{
// Database does not exist
if ((error == ER_BAD_DB_ERROR) && updatesEnabledForThis && _autoSetup)
{
// Try to create the database and connect again if auto setup is enabled
if (DBUpdater<T>::Create(pool) && (!pool.Open()))
error = 0;
}
// If the error wasn't handled quit
if (error)
{
TC_LOG_ERROR("sql.driver", "\nDatabasePool %s NOT opened. There were errors opening the MySQL connections. Check your SQLDriverLogFile "
"for specific errors. Read wiki at http://collab.kpsn.org/display/tc/TrinityCore+Home", name.c_str());
return false;
}
}
return true;
},
[&pool]()
{
pool.Close();
}));
// Populate and update only if updates are enabled for this pool
if (updatesEnabledForThis)
{
_populate.push([this, name, &pool]() -> bool
{
if (!DBUpdater<T>::Populate(pool))
{
TC_LOG_ERROR(_logger.c_str(), "Could not populate the %s database, see log for details.", name.c_str());
return false;
}
return true;
});
_update.push([this, name, &pool]() -> bool
{
if (!DBUpdater<T>::Update(pool))
{
TC_LOG_ERROR(_logger.c_str(), "Could not update the %s database, see log for details.", name.c_str());
return false;
}
return true;
});
}
_prepare.push([this, name, &pool]() -> bool
{
if (!pool.PrepareStatements())
{
TC_LOG_ERROR(_logger.c_str(), "Could not prepare statements of the %s database, see log for details.", name.c_str());
return false;
}
return true;
});
return *this;
}
bool DatabaseLoader::Load()
{
if (!OpenDatabases())
return false;
if (!PopulateDatabases())
return false;
if (!UpdateDatabases())
return false;
if (!PrepareStatements())
return false;
return true;
}
bool DatabaseLoader::OpenDatabases()
{
while (!_open.empty())
{
std::pair<Predicate, std::function<void()>> const load = _open.top();
if (load.first())
_close.push(load.second);
else
{
// Close all loaded databases
while (!_close.empty())
{
_close.top()();
_close.pop();
}
return false;
}
_open.pop();
}
return true;
}
// Processes the elements of the given stack until a predicate returned false.
bool DatabaseLoader::Process(std::stack<Predicate>& stack)
{
while (!stack.empty())
{
if (!stack.top()())
return false;
stack.pop();
}
return true;
}
bool DatabaseLoader::PopulateDatabases()
{
return Process(_populate);
}
bool DatabaseLoader::UpdateDatabases()
{
return Process(_update);
}
bool DatabaseLoader::PrepareStatements()
{
return Process(_prepare);
}
template
DatabaseLoader& DatabaseLoader::AddDatabase<LoginDatabaseConnection>(DatabaseWorkerPool<LoginDatabaseConnection>& pool, std::string const& name);
template
DatabaseLoader& DatabaseLoader::AddDatabase<WorldDatabaseConnection>(DatabaseWorkerPool<WorldDatabaseConnection>& pool, std::string const& name);
template
DatabaseLoader& DatabaseLoader::AddDatabase<CharacterDatabaseConnection>(DatabaseWorkerPool<CharacterDatabaseConnection>& pool, std::string const& name);
template
DatabaseLoader& DatabaseLoader::AddDatabase<HotfixDatabaseConnection>(DatabaseWorkerPool<HotfixDatabaseConnection>& pool, std::string const& name);
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