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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Catalog\Model\ResourceModel\Indexer;
/**
* Logic for switching active and replica index tables.
*/
class ActiveTableSwitcher
{
/**
* Suffix for replica index table.
*
* @var string
*/
private $additionalTableSuffix = '_replica';
/**
* Suffix for outdated index table.
*
* @var string
*/
private $outdatedTableSuffix = '_outdated';
/**
* Switch index tables from replica to active.
*
* @param \Magento\Framework\DB\Adapter\AdapterInterface $connection
* @param array $tableNames
* @return void
*/
public function switchTable(\Magento\Framework\DB\Adapter\AdapterInterface $connection, array $tableNames)
{
$toRename = [];
foreach ($tableNames as $tableName) {
$outdatedTableName = $tableName . $this->outdatedTableSuffix;
$replicaTableName = $tableName . $this->additionalTableSuffix;
$renameBatch = [
[
'oldName' => $tableName,
'newName' => $outdatedTableName
],
[
'oldName' => $replicaTableName,
'newName' => $tableName
],
[
'oldName' => $outdatedTableName,
'newName' => $replicaTableName
]
];
$toRename = array_merge($toRename, $renameBatch);
}
if (!empty($toRename)) {
$connection->renameTablesBatch($toRename);
}
}
/**
* @param string $tableName
* @return string
*/
public function getAdditionalTableName($tableName)
{
return $tableName . $this->additionalTableSuffix;
}
}