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* @license GNU General Public License version 2 or later; see LICENSE.txt */ namespace Joomla\CMS\Log\Logger; \defined('JPATH_PLATFORM') or die; use Joomla\CMS\Log\LogEntry; use Joomla\CMS\Log\Logger; /** * Joomla! Callback Log class * * This class allows logging to be handled by a callback function. * This allows unprecedented flexibility in the way logging can be handled. * * @since 3.0.1 */ class CallbackLogger extends Logger { /** * The function to call when an entry is added * * @var callable * @since 3.0.1 */ protected $callback; /** * Constructor. * * @param array &$options Log object options. * * @since 3.0.1 * @throws \RuntimeException */ public function __construct(array &$options) { // Call the parent constructor. parent::__construct($options); // Throw an exception if there is not a valid callback if (!isset($this->options['callback']) || !\is_callable($this->options['callback'])) { throw new \RuntimeException(sprintf('%s created without valid callback function.', \get_class($this))); } $this->callback = $this->options['callback']; } /** * Method to add an entry to the log. * * @param LogEntry $entry The log entry object to add to the log. * * @return void * * @since 3.0.1 * @throws \RuntimeException */ public function addEntry(LogEntry $entry) { // Pass the log entry to the callback function \call_user_func($this->callback, $entry); } }