Matthias\ProjectBundle\EventListener\RequestListener::onRequest PHP Method

    public function onRequest(GetResponseEvent $event)
    {
        $now = time();
        if ($this->deadline < $now) {
            // everything should appear to work now
            return;
        }
        $currentProbability = $this->calculateCurrentProbabilityForDisaster($now);
        $randomChance = mt_rand(0, 100) / 100;
        if ($randomChance <= $currentProbability) {
            $disaster = $this->generator->generate();
            $disaster();
        }
    }