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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author Joas Schilling <coding@schilljs.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Robin Appelman <robin@icewind.nl>
* @author Robin Müller <coder-hugo@users.noreply.github.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Repair;
use Doctrine\DBAL\Exception\DriverException;
use Doctrine\DBAL\Platforms\MySqlPlatform;
use OCP\IConfig;
use OCP\IDBConnection;
use OCP\ILogger;
use OCP\Migration\IOutput;
use OCP\Migration\IRepairStep;
class Collation implements IRepairStep {
/** @var IConfig */
protected $config;
/** @var ILogger */
protected $logger;
/** @var IDBConnection */
protected $connection;
/** @var bool */
protected $ignoreFailures;
/**
* @param IConfig $config
* @param ILogger $logger
* @param IDBConnection $connection
* @param bool $ignoreFailures
*/
public function __construct(IConfig $config, ILogger $logger, IDBConnection $connection, $ignoreFailures) {
$this->connection = $connection;
$this->config = $config;
$this->logger = $logger;
$this->ignoreFailures = $ignoreFailures;
}
public function getName() {
return 'Repair MySQL collation';
}
/**
* Fix mime types
*/
public function run(IOutput $output) {
if (!$this->connection->getDatabasePlatform() instanceof MySqlPlatform) {
$output->info('Not a mysql database -> nothing to do');
return;
}
$characterSet = $this->config->getSystemValue('mysql.utf8mb4', false) ? 'utf8mb4' : 'utf8';
$tables = $this->getAllNonUTF8BinTables($this->connection);
foreach ($tables as $table) {
$output->info("Change row format for $table ...");
$query = $this->connection->prepare('ALTER TABLE `' . $table . '` ROW_FORMAT = DYNAMIC;');
try {
$query->execute();
} catch (DriverException $e) {
// Just log this
$this->logger->logException($e);
if (!$this->ignoreFailures) {
throw $e;
}
}
$output->info("Change collation for $table ...");
if ($characterSet === 'utf8mb4') {
// need to set row compression first
$query = $this->connection->prepare('ALTER TABLE `' . $table . '` ROW_FORMAT=COMPRESSED;');
$query->execute();
}
$query = $this->connection->prepare('ALTER TABLE `' . $table . '` CONVERT TO CHARACTER SET ' . $characterSet . ' COLLATE ' . $characterSet . '_bin;');
try {
$query->execute();
} catch (DriverException $e) {
// Just log this
$this->logger->logException($e);
if (!$this->ignoreFailures) {
throw $e;
}
}
}
if (empty($tables)) {
$output->info('All tables already have the correct collation -> nothing to do');
}
}
/**
* @param IDBConnection $connection
* @return string[]
*/
protected function getAllNonUTF8BinTables(IDBConnection $connection) {
$dbName = $this->config->getSystemValue("dbname");
$characterSet = $this->config->getSystemValue('mysql.utf8mb4', false) ? 'utf8mb4' : 'utf8';
// fetch tables by columns
$statement = $connection->executeQuery(
"SELECT DISTINCT(TABLE_NAME) AS `table`" .
" FROM INFORMATION_SCHEMA . COLUMNS" .
" WHERE TABLE_SCHEMA = ?" .
" AND (COLLATION_NAME <> '" . $characterSet . "_bin' OR CHARACTER_SET_NAME <> '" . $characterSet . "')" .
" AND TABLE_NAME LIKE '*PREFIX*%'",
array($dbName)
);
$rows = $statement->fetchAll();
$result = [];
foreach ($rows as $row) {
$result[$row['table']] = true;
}
// fetch tables by collation
$statement = $connection->executeQuery(
"SELECT DISTINCT(TABLE_NAME) AS `table`" .
" FROM INFORMATION_SCHEMA . TABLES" .
" WHERE TABLE_SCHEMA = ?" .
" AND TABLE_COLLATION <> '" . $characterSet . "_bin'" .
" AND TABLE_NAME LIKE '*PREFIX*%'",
[$dbName]
);
$rows = $statement->fetchAll();
foreach ($rows as $row) {
$result[$row['table']] = true;
}
return array_keys($result);
}
}
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