public static function validate(array &$settings, array &$errors)
{
// Use the TIMEOUT that was specified by the user for a real world indication
$timeout = isset($settings[self::getClass()]['timeout']) ? (int) $settings[self::getClass()]['timeout'] : 6;
// Check cache value is numeric
if (!is_numeric($settings[self::getClass()]['cache'])) {
$errors[self::getClass()]['cache'] = __('Must be a valid number');
}
// Make sure that XPath has been filled out
if (trim($settings[self::getClass()]['xpath']) == '') {
$errors[self::getClass()]['xpath'] = __('This is a required field');
}
// Ensure we have a URL
if (trim($settings[self::getClass()]['url']) == '') {
$errors[self::getClass()]['url'] = __('This is a required field');
} elseif (!preg_match('@{([^}]+)}@i', $settings[self::getClass()]['url'])) {
// If there is a parameter in the URL, we can't validate the existence of the URL
// as we don't have the environment details of where this datasource is going
// to be executed.
$valid_url = self::isValidURL($settings[self::getClass()]['url'], $timeout, $settings[self::getClass()]['format'], true);
// If url was valid, `isValidURL` will return an array of data
// Otherwise it'll return a string, which is an error
if (is_array($valid_url)) {
self::$url_result = $valid_url['data'];
} else {
$errors[self::getClass()]['url'] = $valid_url;
}
}
return empty($errors[self::getClass()]);
}
public static function registerProviders()
{
self::$provides = array('data-sources' => array('RemoteDatasource' => RemoteDatasource::getName()));
return true;
}
public function __construct($env = NULL, $process_params = true)
{
parent::__construct($env, $process_params);
$this->_dependencies = array();
}
/**
* Given the format, this function will look for the file
* and create a new transformer.
*
* @param string $format
* @return Transformer
*/
public static function getTransformer($format)
{
$transformer = EXTENSIONS . '/remote_datasource/lib/class.' . strtolower($format) . '.php';
if (!isset(self::$transformer)) {
if (file_exists($transformer)) {
$classname = (require_once $transformer);
self::$transformer = new $classname();
}
}
return self::$transformer;
}
