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<?php |
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/** |
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* @author Sergii Bondarenko, <[email protected]> |
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*/ |
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namespace Drupal\TqExtension\Utils; |
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class DatabaseManager |
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{ |
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/** |
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* MySQL and MySQLDump login arguments. |
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* |
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* @var string |
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*/ |
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private $credentials = '-u%s -p%s -h%s -P%s'; |
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/** |
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* Name of original database. |
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* |
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* @var string |
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*/ |
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private $source = ''; |
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/** |
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* Name of temporary database that will store data from original. |
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* |
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* @var string |
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*/ |
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private $temporary = ''; |
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/** |
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* Name of an object where this class is called. |
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* |
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* @var string |
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*/ |
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private $callee; |
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/** |
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* @param string $connection |
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* Database connection name (key in $databases array from settings.php). |
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* @param string $callee |
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* Must be the value of "self::class" of callee object. |
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*/ |
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public function __construct($connection, $callee) |
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{ |
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if (!defined('DRUPAL_ROOT') || !function_exists('conf_path')) { |
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throw new \RuntimeException('Drupal is not bootstrapped.'); |
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} |
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if (!class_exists($callee)) { |
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throw new \InvalidArgumentException(sprintf('An object of "%s" type does not exist.', $callee)); |
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} |
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$databases = []; |
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require sprintf('%s/%s/settings.php', DRUPAL_ROOT, conf_path()); |
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if (empty($databases[$connection])) { |
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throw new \InvalidArgumentException(sprintf('The "%s" database connection does not exist.', $connection)); |
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} |
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$db = $databases[$connection]['default']; |
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foreach (['port' => 3306, 'host' => '127.0.0.1'] as $option => $default) { |
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if (empty($db[$option])) { |
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$db[$option] = $default; |
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} |
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} |
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$this->callee = $callee; |
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$this->source = $db['database']; |
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$this->temporary = "tqextension_$this->source"; |
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$this->credentials = sprintf($this->credentials, $db['username'], $db['password'], $db['host'], $db['port']); |
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// Drop and create temporary DB and copy source into it. |
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$this->copy($this->source, $this->temporary); |
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} |
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/** |
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* Restore original database. |
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*/ |
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public function __destruct() |
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{ |
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// Drop and create source DB and copy temporary into it. |
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$this->copy($this->temporary, $this->source); |
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// Kill temporary DB. |
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$this->drop($this->temporary); |
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} |
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/** |
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* @param string $name |
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* Name of the database to check. |
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* |
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* @return bool |
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* Checking state. |
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*/ |
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public function exist($name) |
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{ |
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return !empty($this->exec("mysql -e 'show databases' | grep '^$name$'")); |
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} |
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/** |
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* @param string $name |
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* Name of the database to drop. |
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*/ |
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public function drop($name) |
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{ |
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if ($this->exist($name)) { |
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$this->exec("mysql -e '%s database $name;'", __FUNCTION__); |
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} |
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} |
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/** |
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* @param string $name |
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* Name of the database to create. |
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*/ |
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public function create($name) |
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{ |
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if (!$this->exist($name)) { |
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$this->exec("mysql -e '%s database $name;'", __FUNCTION__); |
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} |
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} |
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/** |
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* @param string $source |
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* Source DB name. |
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* @param string $destination |
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* Name of the new DB. |
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*/ |
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public function copy($source, $destination) |
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{ |
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$this->drop($destination); |
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$this->create($destination); |
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$this->exec("mysqldump $source | mysql $destination"); |
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} |
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/** |
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* Executes a shell command. |
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* |
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* @param string $command |
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* Command to execute. |
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* |
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* @return string |
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* Result of a shell command. |
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*/ |
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private function exec($command) |
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{ |
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// Adding credentials after "mysql" and "mysqldump" commands. |
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$command = preg_replace( |
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'/(mysql(?:dump)?)/', |
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"\\1 $this->credentials", |
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vsprintf($command, array_slice(func_get_args(), 1)) |
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); |
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if (method_exists($this->callee, 'debug')) { |
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call_user_func([$this->callee, 'debug'], [$command]); |
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} |
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return trim(shell_exec($command)); |
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} |
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} |
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BR0kEN- /
TqExtension
