✏️ Editing: CronWorkerRunner.php Writable

<?php // phpcs:ignore SlevomatCodingStandard.TypeHints.DeclareStrictTypes.DeclareStrictTypesMissing

namespace MailPoet\Cron;

if (!defined('ABSPATH')) exit;

use MailPoet\Entities\ScheduledTaskEntity;
use MailPoet\Logging\LoggerFactory;
use MailPoet\Newsletter\Sending\ScheduledTasksRepository;
use MailPoetVendor\Carbon\Carbon;

class CronWorkerRunner {
  const TASK_BATCH_SIZE = 5;
  const TASK_RUN_TIMEOUT = 120;
  const TIMED_OUT_TASK_RESCHEDULE_TIMEOUT = 5;

/** @var float */
  private $timer;

/** @var CronHelper */
  private $cronHelper;

/** @var CronWorkerScheduler */
  private $cronWorkerScheduler;

/** @var ScheduledTasksRepository */
  private $scheduledTasksRepository;

/** @var LoggerFactory  */
  private $loggerFactory;

public function __construct(
    CronHelper $cronHelper,
    CronWorkerScheduler $cronWorkerScheduler,
    ScheduledTasksRepository $scheduledTasksRepository,
    LoggerFactory $loggerFactory
  ) {
    $this->timer = microtime(true);
    $this->cronHelper = $cronHelper;
    $this->cronWorkerScheduler = $cronWorkerScheduler;
    $this->scheduledTasksRepository = $scheduledTasksRepository;
    $this->loggerFactory = $loggerFactory;
  }

public function run(CronWorkerInterface $worker) {
    // abort if execution limit is reached
    $this->cronHelper->enforceExecutionLimit($this->timer);
    $dueTasks = $this->getDueTasks($worker);
    $runningTasks = $this->getRunningTasks($worker);

if (!$worker->checkProcessingRequirements()) {
      foreach (array_merge($dueTasks, $runningTasks) as $task) {
        $this->scheduledTasksRepository->remove($task);
        $this->scheduledTasksRepository->flush();
      }
      return false;
    }

$worker->init();

if (!$dueTasks && !$runningTasks) {
      if ($worker->scheduleAutomatically()) {
        $this->cronWorkerScheduler->schedule($worker->getTaskType(), $worker->getNextRunDate());
      }
      return false;
    }

try {
      foreach ($dueTasks as $task) {
        $this->prepareTask($worker, $task);
      }
      // Re-fetch running tasks so that we can process tasks that were just prepared
      $runningTasks = $this->getRunningTasks($worker);
      foreach ($runningTasks as $task) {
        $this->processTask($worker, $task);
      }
    } catch (\Exception $e) {
      if (isset($task) && $task && $e->getCode() !== CronHelper::DAEMON_EXECUTION_LIMIT_REACHED) {
        /**
         * ToDo: Use \LoggerFactory::TOPIC_CRON as logger topic, once it is available
         */
        $this->loggerFactory->getLogger()->error($e->getMessage(), ['error' => $e]);
        $this->cronWorkerScheduler->rescheduleProgressively($task);
      }
      throw $e;
    }

return true;
  }

private function getDueTasks(CronWorkerInterface $worker) {
    return $this->scheduledTasksRepository->findDueByType($worker->getTaskType(), self::TASK_BATCH_SIZE);
  }

private function getRunningTasks(CronWorkerInterface $worker) {
    return $this->scheduledTasksRepository->findRunningByType($worker->getTaskType(), self::TASK_BATCH_SIZE);
  }

private function prepareTask(CronWorkerInterface $worker, ScheduledTaskEntity $task) {
    // abort if execution limit is reached
    $this->cronHelper->enforceExecutionLimit($this->timer);

$prepareCompleted = $worker->prepareTaskStrategy($task, $this->timer);

if ($prepareCompleted) {
      $task->setStatus(null);
      $this->scheduledTasksRepository->persist($task);
      $this->scheduledTasksRepository->flush();
    }
  }

private function processTask(CronWorkerInterface $worker, ScheduledTaskEntity $task) {
    // abort if execution limit is reached
    $this->cronHelper->enforceExecutionLimit($this->timer);

if (!$worker->supportsMultipleInstances()) {
      if ($this->rescheduleOutdated($task)) {
        return false;
      }
      if ($this->isInProgress($task)) {
        return false;
      }
    }

$this->startProgress($task);

try {
      $completed = $worker->processTaskStrategy($task, $this->timer);
    } catch (\Exception $e) {
      $this->stopProgress($task);
      throw $e;
    }

if ($completed) {
      $this->complete($task);
    }

$this->stopProgress($task);

return (bool)$completed;
  }

private function rescheduleOutdated(ScheduledTaskEntity $task) {
    $currentTime = Carbon::now()->millisecond(0);

if (empty($task->getUpdatedAt())) {
      // missing updatedAt, consider this task outdated (set year to 2000) and reschedule
      $updatedAt = Carbon::createFromDate(2000);
    } else if (!$task->getUpdatedAt() instanceof Carbon) {
      $updatedAt = new Carbon($task->getUpdatedAt());
    } else {
      $updatedAt = $task->getUpdatedAt();
    }

// If the task is running for too long consider it stuck and reschedule
    if (!empty($task->getUpdatedAt()) && $updatedAt->diffInMinutes($currentTime, false) > self::TASK_RUN_TIMEOUT) {
      $this->stopProgress($task);
      $this->cronWorkerScheduler->reschedule($task, self::TIMED_OUT_TASK_RESCHEDULE_TIMEOUT);
      return true;
    }
    return false;
  }

private function isInProgress(ScheduledTaskEntity $task) {
    if ($task->getInProgress()) {
      // Do not run multiple instances of the task
      return true;
    }
    return false;
  }

private function startProgress(ScheduledTaskEntity $task) {
    $task->setInProgress(true);
    $this->scheduledTasksRepository->persist($task);
    $this->scheduledTasksRepository->flush();
  }

private function stopProgress(ScheduledTaskEntity $task) {
    $task->setInProgress(false);
    $this->scheduledTasksRepository->persist($task);
    $this->scheduledTasksRepository->flush();
  }

private function complete(ScheduledTaskEntity $task) {
    $task->setProcessedAt(Carbon::now()->millisecond(0));
    $task->setStatus(ScheduledTaskEntity::STATUS_COMPLETED);
    $this->scheduledTasksRepository->persist($task);
    $this->scheduledTasksRepository->flush();
  }
}

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