Magento data format factory: Mage_Webhook_Model_Formatter_Factory_Interface interface for extensibility alpha-1

Mage_Webhook_Model_Formatter_Factory_Interface.php

class Mage_Webhook_Model_Formatter_Factory_Json implements Mage_Webhook_Model_Formatter_Factory_Interface
{
    const XML_PATH_DEFAULT_OPTIONS = 'global/webhook/formats/json/options/';
 
    protected $_config;
 
    public function __construct(Mage_Core_Model_Config $config)
    {
        $this->_config = $config;
    }
 
    /**
     * @param $format string indicating the format used
     * @return Mage_Webhook_Model_Formatter_Interface
     */
    public function getFormatter($format)
    {
        $modelName = (string) $this->_config->getNode(
            self::XML_PATH_DEFAULT_OPTIONS . 'format/' . $format . '/formatter'
        );
 
        if (!$modelName) {
            $modelName = (string) $this->_config->getNode(self::XML_PATH_DEFAULT_OPTIONS . 'default_formatter');
        }
 
        if (!$modelName) {
            throw new LogicException(
                "There is no specific formatter for the format given $format and no default formatter."
            );
        }
 
        $formatter = $this->getModel($modelName);
        if (!$formatter instanceof Mage_Webhook_Model_Formatter_Interface) {
            throw new LogicException("Wrong Formatter type for the model found given the format $format.");
        }
 
        return $formatter;
    }
 
    protected function getModel($modelName)
    {
        // TODO: probably here we should pass only format configuration options
        return Mage::getModel($modelName, $this->_config);
    }
}