Job/Manager.php
public function cancel($ticket, $force = false)
    {
        $job = $this->findJob($ticket);

        if (Status::isTerminated($job->getStatus())) {
            return false;
        }

        $isProcessing = $job->getStatus() == Status::PROCESSING();
        $status       = $force ? Status::CANCELLED() : ($isProcessing ? Status::CANCELLING() : Status::CANCELLED());

        $this->helper->updateJob($job, $status);
        $this->jobManager->save($job);

        if ($force) {
            $this->locker->release($job->getTicket());
        }

        if (!$isProcessing || $force) {
            $this->dispatcher->dispatch(JobEvents::JOB_TERMINATED, new TerminationEvent($job));
            $message = $force ? 'Forced cancellation of job ' : 'Cancelled job ';
            $this->logger->info($message . $job->getTicket());
        } else {
            $this->logger->info('Request cancellation of job ' . $job->getTicket());
        }

        return $job;
    }
public function cancel($ticket, $force = false)
    {
        $job = $this->findJob($ticket);

        if (Status::isTerminated($job->getStatus())) {
            return false;
        }

        $isProcessing = $job->getStatus() == Status::PROCESSING();
        $status       = $force ? Status::CANCELLED() : ($isProcessing ? Status::CANCELLING() : Status::CANCELLED());

        $this->helper->updateJob($job, $status);
        $this->jobManager->save($job);

        if ($force) {
            $this->locker->release($job->getTicket());
        }

        if (!$isProcessing || $force) {
            $this->dispatcher->dispatch(JobEvents::JOB_TERMINATED, new TerminationEvent($job));
            $message = $force ? 'Forced cancellation of job ' : 'Cancelled job ';
            $this->logger->info($message . $job->getTicket());
        } else {
            $this->logger->info('Request cancellation of job ' . $job->getTicket());
        }

        return $job;
    }
{@inheritdoc}