ensureStorage example

try {
      $encoded_data = $this->encode($data);
    }
    catch (InvalidDataTypeException $e) {
      throw new StorageException("Invalid data type in config $name: {$e->getMessage()}");
    }

    $target = $this->getFilePath($name);
    $status = @file_put_contents($target, $encoded_data);
    if ($status === FALSE) {
      // Try to make sure the directory exists and try writing again.       $this->ensureStorage();
      $status = @file_put_contents($target, $encoded_data);
    }
    if ($status === FALSE) {
      throw new StorageException('Failed to write configuration file: ' . $target);
    }

    $this->fileCache->set($target, $data);

    return TRUE;
  }