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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Install\Service;
use TYPO3\CMS\Core\Database\ConnectionPool;
use TYPO3\CMS\Core\Utility\GeneralUtility;
/**
* Service handling clearing and statistics of semi-persistent
* core tables.
* @internal This class is only meant to be used within EXT:install and is not part of the TYPO3 Core API.
*/
class ClearTableService
{
/**
* @var array List of table and their description
*/
protected $tableList = [
[
'name' => 'be_sessions',
'description' => 'Backend user sessions',
],
[
'name' => 'fe_sessions',
'description' => 'Frontend user sessions',
],
[
'name' => 'sys_history',
'description' => 'Tracking of database record changes through TYPO3 backend forms',
],
[
'name' => 'sys_lockedrecords',
'description' => 'Record locking of backend user editing',
],
[
'name' => 'sys_log',
'description' => 'General log table',
],
[
'name' => 'sys_preview',
'description' => 'Workspace preview links',
],
[
'name' => 'tx_extensionmanager_domain_model_extension',
'description' => 'List of TER extensions',
],
];
/**
* Get an array of all affected tables, a short description and their row counts
*
* @return array Details per table
*/
public function getTableStatistics(): array
{
$tableStatistics = [];
foreach ($this->tableList as $table) {
$connection = GeneralUtility::makeInstance(ConnectionPool::class)->getConnectionForTable($table['name']);
if ($connection->createSchemaManager()->tablesExist([$table['name']])) {
$table['rowCount'] = $connection->count(
'*',
$table['name'],
[]
);
$tableStatistics[] = $table;
}
}
return $tableStatistics;
}
/**
* Truncate a table from $this->tableList
*
* @throws \RuntimeException
*/
public function clearSelectedTable(string $tableName)
{
$tableFound = false;
foreach ($this->tableList as $table) {
if ($table['name'] === $tableName) {
$tableFound = true;
break;
}
}
if (!$tableFound) {
throw new \RuntimeException(
'Selected table ' . $tableName . ' can not be cleared',
1501942151
);
}
GeneralUtility::makeInstance(ConnectionPool::class)->getConnectionForTable($tableName)->truncate($tableName);
}
}