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<?php
namespace Studip\Cli\Commands\DB;
use DBManager;
use StudipPDO;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
class MigrateFileFormat extends Command
{
protected static $defaultName = 'db:migrate-file-format';
protected function configure(): void
{
$this->setDescription('Antelope to Barracuda');
$this->setHelp('Migrate the FileFormat from Antelope to Barracuda.');
}
protected function execute(InputInterface $input, OutputInterface $output): int
{
$io = new SymfonyStyle($input, $output);
$io->info('Migration starting at ' . date('d.m.Y H:i:s'));
$start = microtime(true);
// Check if InnoDB is enabled in database server.
$engines = DBManager::get()->fetchAll('SHOW ENGINES');
$innodb = false;
foreach ($engines as $e) {
// InnoDB is found and enabled.
if ($e['Engine'] == 'InnoDB' && in_array(mb_strtolower($e['Support']), ['default', 'yes'])) {
$innodb = true;
break;
}
}
if ($innodb) {
// Get version of database system (MySQL/MariaDB/Percona)
$data = DBManager::get()->fetchFirst('SELECT VERSION() AS version');
$version = $data[0];
// Use Barracuda format if database supports it (5.5 upwards).
if (version_compare($version, '5.5', '>=')) {
$io->info('Checking if Barracuda file format is supported...');
// Get innodb_file_per_table setting
$data = DBManager::get()->fetchOne("SHOW VARIABLES LIKE 'innodb_file_per_table'");
$file_per_table = $data['Value'];
// Check if Barracuda file format is enabled
$data = DBManager::get()->fetchOne("SHOW VARIABLES LIKE 'innodb_file_format'");
$file_format = $data['Value'];
if (mb_strtolower($file_per_table) == 'on' && mb_strtolower($file_format) == 'barracuda') {
// Fetch all tables that need to be converted.
$tables = DBManager::get()->fetchFirst(
"SELECT TABLE_NAME
FROM `information_schema`.TABLES
WHERE TABLE_SCHEMA=:database AND ENGINE=:engine
AND ROW_FORMAT IN (:rowformats)
ORDER BY TABLE_NAME",
[
':database' => $GLOBALS['DB_STUDIP_DATABASE'],
':engine' => 'InnoDB',
':rowformats' => ['Compact', 'Redundant'],
]
);
$newformat = 'DYNAMIC';
// Prepare query for table conversion.
$stmt = DBManager::get()->prepare('ALTER TABLE :database.:table ROW_FORMAT=:newformat');
$stmt->bindParam(':database', $DB_STUDIP_DATABASE, StudipPDO::PARAM_COLUMN);
$stmt->bindParam(':newformat', $newformat, StudipPDO::PARAM_COLUMN);
if (count($tables) > 0) {
// Now convert the found tables.
foreach ($tables as $t) {
$local_start = microtime(true);
$stmt->bindParam(':table', $t, StudipPDO::PARAM_COLUMN);
$stmt->execute();
$local_end = microtime(true);
$local_duration = $local_end - $local_start;
$human_local_duration = sprintf(
'%02d:%02d:%02d',
($local_duration / 60 / 60) % 24,
($local_duration / 60) % 60,
$local_duration % 60
);
$io->info('Converserion of table' . $t . ' took ' . $human_local_duration);
}
} else {
$io->error('No Antelope format tables found');
return Command::FAILURE;
}
} else {
if (mb_strtolower($file_per_table) != 'on') {
$io->error('file_per_table not set');
return Command::FAILURE;
}
if (mb_strtolower($file_format) != 'barracuda') {
$io->error('file_format not set to Barracuda (but to ' . $file_format . ')');
return Command::FAILURE;
}
}
$end = microtime(true);
$duration = $end - $start;
$human_duration = sprintf(
'%02d:%02d:%02d',
($duration / 60 / 60) % 24,
($duration / 60) % 60,
$duration % 60
);
$io->info('Migration finished at ' . date('d.m.Y H:i:s') . ', duration ' . $human_duration);
return Command::SUCCESS;
} else {
$io->error(
'Your database server does not yet support the Barracuda row format (you need at least 5.5)'
);
return Command::FAILURE;
}
} else {
$io->error(
'The storage engine InnoDB is not enabled in your database installation, tables cannot be converted.'
);
return Command::INVALID;
}
}
}
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