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<?php
namespace OC\TaskProcessing;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\BackgroundJob\IJobList;
use OCP\BackgroundJob\QueuedJob;
use OCP\Files\GenericFileException;
use OCP\Files\NotPermittedException;
use OCP\Lock\LockedException;
use OCP\TaskProcessing\Exception\Exception;
use OCP\TaskProcessing\Exception\NotFoundException;
use OCP\TaskProcessing\Exception\ProcessingException;
use OCP\TaskProcessing\Exception\ValidationException;
use OCP\TaskProcessing\IManager;
use OCP\TaskProcessing\ISynchronousProvider;
use Psr\Log\LoggerInterface;
class SynchronousBackgroundJob extends QueuedJob {
public function __construct(
ITimeFactory $timeFactory,
private readonly IManager $taskProcessingManager,
private readonly IJobList $jobList,
private readonly LoggerInterface $logger,
) {
parent::__construct($timeFactory);
}
/**
* @inheritDoc
*/
protected function run($argument) {
$providers = $this->taskProcessingManager->getProviders();
foreach ($providers as $provider) {
if (!$provider instanceof ISynchronousProvider) {
continue;
}
$taskType = $provider->getTaskTypeId();
try {
$task = $this->taskProcessingManager->getNextScheduledTask($taskType);
} catch (NotFoundException $e) {
continue;
} catch (Exception $e) {
$this->logger->error('Unknown error while retrieving scheduled TaskProcessing tasks', ['exception' => $e]);
continue;
}
try {
try {
$input = $this->taskProcessingManager->prepareInputData($task);
} catch (GenericFileException|NotPermittedException|LockedException|ValidationException $e) {
$this->logger->warning('Failed to prepare input data for a TaskProcessing task with synchronous provider ' . $provider->getId(), ['exception' => $e]);
$this->taskProcessingManager->setTaskResult($task->getId(), $e->getMessage(), null);
// Schedule again
$this->jobList->add(self::class, $argument);
return;
}
try {
$output = $provider->process($task->getUserId(), $input, fn (float $progress) => $this->taskProcessingManager->setTaskProgress($task->getId(), $progress));
} catch (ProcessingException $e) {
$this->logger->warning('Failed to process a TaskProcessing task with synchronous provider ' . $provider->getId(), ['exception' => $e]);
$this->taskProcessingManager->setTaskResult($task->getId(), $e->getMessage(), null);
// Schedule again
$this->jobList->add(self::class, $argument);
return;
} catch (\Throwable $e) {
$this->logger->error('Unknown error while processing TaskProcessing task', ['exception' => $e]);
$this->taskProcessingManager->setTaskResult($task->getId(), $e->getMessage(), null);
// Schedule again
$this->jobList->add(self::class, $argument);
return;
}
$this->taskProcessingManager->setTaskResult($task->getId(), null, $output);
} catch (NotFoundException $e) {
$this->logger->info('Could not find task anymore after execution. Moving on.', ['exception' => $e]);
} catch (Exception $e) {
$this->logger->error('Failed to report result of TaskProcessing task', ['exception' => $e]);
}
}
// Schedule again
$this->jobList->add(self::class, $argument);
}
}
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