<?php namespace Illuminate\Contracts\Queue; interface Monitor { /** * Register a callback to be executed on every iteration through the queue loop. * * @param mixed $callback * @return void */ public function looping($callback); /** * Register a callback to be executed when a job fails after the maximum number of retries. * * @param mixed $callback * @return void */ public function failing($callback); /** * Register a callback to be executed when a daemon queue is stopping. * * @param mixed $callback * @return void */ public function stopping($callback); }