function Tasks::connect

Checks if we can connect to the database.

Return value

bool TRUE if we can connect to the database, otherwise FALSE.

Overrides Tasks::connect

File

core/modules/mysql/src/Driver/Database/mysql/Install/Tasks.php, line 80

Class

Tasks

Specifies installation tasks for MySQL and equivalent databases.

Namespace

Code

protected function connect() {
  try {
    // This doesn't actually test the connection.
    Database::setActiveConnection();
    // Now actually do a check.
    Database::getConnection();
    $this->pass('Drupal can CONNECT to the database ok.');
  } catch (\Exception $e) {
    // Attempt to create the database if it is not found.
    if ($e->getCode() == Connection::DATABASE_NOT_FOUND) {
      // Remove the database string from connection info.
      $connection_info = Database::getConnectionInfo();
      $database = $connection_info['default']['database'];
      unset($connection_info['default']['database']);
      // In order to change the Database::$databaseInfo array, need to remove
      // the active connection, then re-add it with the new info.
      Database::removeConnection('default');
      Database::addConnectionInfo('default', 'default', $connection_info['default']);
      try {
        // Now, attempt the connection again; if it's successful, attempt to
        // create the database.
        Database::getConnection()->createDatabase($database);
        Database::closeConnection();
        // Now, restore the database config.
        Database::removeConnection('default');
        $connection_info['default']['database'] = $database;
        Database::addConnectionInfo('default', 'default', $connection_info['default']);
        // Check the database connection.
        Database::getConnection();
        $this->pass('Drupal can CONNECT to the database ok.');
      } catch (DatabaseNotFoundException $e) {
        // Still no dice; probably a permission issue. Raise the error to the
        // installer.
        $this->fail(t('Database %database not found. The server reports the following message when attempting to create the database: %error.', [
          '%database' => $database,
          '%error' => $e->getMessage(),
        ]));
      }
    }
    else {
      // Database connection failed for some other reason than a non-existent
      // database.
      $this->fail(t('Failed to connect to your database server. The server reports the following message: %error.<ul><li>Is the database server running?</li><li>Does the database exist or does the database user have sufficient privileges to create the database?</li><li>Have you entered the correct database name?</li><li>Have you entered the correct username and password?</li><li>Have you entered the correct database hostname and port number?</li></ul>', [
        '%error' => $e->getMessage(),
      ]));
      return FALSE;
    }
  }
  return TRUE;
}