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<?php |
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/** |
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* Nextcloud - OCR |
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* This file is licensed under the Affero General Public License version 3 or |
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* later. |
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* See the COPYING file. |
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* |
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* @author Janis Koehr <[email protected]> |
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* @copyright Janis Koehr 2017 |
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*/ |
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namespace OCA\Ocr\Service; |
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use Exception; |
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use OCA\Ocr\Db\OcrJob; |
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use OCA\Ocr\Db\OcrJobMapper; |
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use OCP\IL10N; |
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use OCP\ILogger; |
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use OCA\Ocr\Constants\OcrConstants; |
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use OCA\Ocr\Util\FileUtil; |
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use OCA\Ocr\Util\RedisUtil; |
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/** |
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* Class RedisService |
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* |
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* @package OCA\Ocr\Service |
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*/ |
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class RedisService { |
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/** |
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* |
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* @var RedisUtil |
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*/ |
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private $redisUtil; |
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/** |
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* |
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* @var OcrJobMapper |
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*/ |
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private $mapper; |
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/** |
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* |
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* @var FileUtil |
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*/ |
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private $fileUtil; |
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/** |
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* |
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* @var ILogger |
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*/ |
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private $logger; |
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/** |
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* |
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* @var IL10N |
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*/ |
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private $l10n; |
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/** |
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* QueueService constructor. |
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* |
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* @param OcrJobMapper $mapper |
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* @param FileUtil $fileUtil |
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* @param RedisUtil $redisUtil |
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* @param IL10N $l10n |
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* @param ILogger $logger |
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*/ |
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public function __construct(OcrJobMapper $mapper, FileUtil $fileUtil, RedisUtil $redisUtil, IL10N $l10n, |
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ILogger $logger) { |
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$this->mapper = $mapper; |
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$this->fileUtil = $fileUtil; |
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$this->logger = $logger; |
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$this->l10n = $l10n; |
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$this->redisUtil = $redisUtil; |
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} |
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/** |
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* Inits the client and sends the task to the background worker (async) |
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* |
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* @param OcrJob $job |
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* @param string[] $languages |
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*/ |
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public function sendJob($job, $languages) { |
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try { |
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// check for messaging and put everything together |
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$redis = $this->redisUtil->setupRedisInstance(); |
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$job = $this->mapper->insert($job); |
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$msg = json_encode( |
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[ |
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'id' => $job->getId(), |
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'type' => $job->getType(), |
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'source' => $job->getSource(), |
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'tempFile' => $job->getTempFile(), |
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'languages' => $languages |
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]); |
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if (!$redis->lPush(OcrConstants::REDIS_NEW_JOBS_QUEUE, $msg)) { |
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throw new NotFoundException($this->l10n->t('Could not add files to the redis OCR processing queue.')); |
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} |
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} catch (Exception $e) { |
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$this->fileUtil->execRemove($job->getTempFile()); |
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$job->setStatus(OcrConstants::STATUS_FAILED); |
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$job->setErrorLog($e->getMessage()); |
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$this->mapper->update($job); |
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$this->handleException($e); |
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} |
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} |
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/** |
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* Retrieves all finished jobs from redis and returns them. |
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* |
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* @return string[] |
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*/ |
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public function readingFinishedJobs() { |
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try { |
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$redis = $this->redisUtil->setupRedisInstance(); |
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$result = $redis->multi() |
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->lRange(OcrConstants::REDIS_FINISHED_JOBS_QUEUE, 0, -1) |
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->delete(OcrConstants::REDIS_FINISHED_JOBS_QUEUE) |
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->exec(); |
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$this->logger->debug('Retrieved the following array from redis: {result}', |
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[ |
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'result' => $result[0] |
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]); |
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return $result[0]; |
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} catch (Exception $e) { |
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$this->handleException($e); |
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} |
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} |
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/** |
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* Handle the possible thrown Exceptions from all methods of this class. |
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* |
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* @param Exception $e |
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* @throws Exception |
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* @throws NotFoundException |
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*/ |
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private function handleException($e) { |
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$this->logger->logException($e, |
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[ |
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'message' => 'Exception during message queue processing' |
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]); |
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throw $e; |
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} |
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} |
janis91 /
ocr
