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<?php |
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/** |
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* @copyright Copyright (c) 2017-2020 Matias De lellis <[email protected]> |
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* @copyright Copyright (c) 2018, Branko Kokanovic <[email protected]> |
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* |
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* @author Branko Kokanovic <[email protected]> |
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* |
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* @license GNU AGPL version 3 or any later version |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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*/ |
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namespace OCA\FaceRecognition\BackgroundJob\Tasks; |
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use OCP\IUser; |
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use OCP\Files\File; |
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use OCP\Files\Folder; |
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use OCP\Files\Node; |
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use OCA\FaceRecognition\BackgroundJob\FaceRecognitionBackgroundTask; |
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use OCA\FaceRecognition\BackgroundJob\FaceRecognitionContext; |
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use OCA\FaceRecognition\Db\Image; |
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use OCA\FaceRecognition\Db\ImageMapper; |
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use OCA\FaceRecognition\Db\FaceMapper; |
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use OCA\FaceRecognition\Db\PersonMapper; |
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use OCA\FaceRecognition\Service\FileService; |
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use OCA\FaceRecognition\Service\SettingsService; |
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/** |
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* Task that, for each user, crawls for all images in database, |
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* checks if they actually exist and removes them if they don't. |
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* It should be executed rarely. |
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*/ |
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class StaleImagesRemovalTask extends FaceRecognitionBackgroundTask { |
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/** @var ImageMapper Image mapper */ |
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private $imageMapper; |
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/** @var FaceMapper Face mapper */ |
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private $faceMapper; |
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/** @var PersonMapper Person mapper */ |
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private $personMapper; |
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/** @var FileService File service*/ |
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private $fileService; |
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/** @var SettingsService */ |
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private $settingsService; |
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/** |
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* @param ImageMapper $imageMapper Image mapper |
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* @param FaceMapper $faceMapper Face mapper |
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* @param PersonMapper $personMapper Person mapper |
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* @param FileService $fileService File Service |
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* @param SettingsService $settingsService Settings Service |
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*/ |
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public function __construct(ImageMapper $imageMapper, |
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FaceMapper $faceMapper, |
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PersonMapper $personMapper, |
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FileService $fileService, |
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SettingsService $settingsService) |
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{ |
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parent::__construct(); |
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$this->imageMapper = $imageMapper; |
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$this->faceMapper = $faceMapper; |
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$this->personMapper = $personMapper; |
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$this->fileService = $fileService; |
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$this->settingsService = $settingsService; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function description() { |
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return "Crawl for stale images (either missing in filesystem or under .nomedia) and remove them from DB"; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function execute(FaceRecognitionContext $context) { |
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$this->setContext($context); |
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// Check if we are called for one user only, or for all user in instance. |
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$staleRemovedImages = 0; |
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$eligable_users = array(); |
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if (is_null($this->context->user)) { |
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$this->context->userManager->callForSeenUsers(function (IUser $user) use (&$eligable_users) { |
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$eligable_users[] = $user->getUID(); |
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}); |
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} else { |
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$eligable_users[] = $this->context->user->getUID(); |
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} |
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foreach($eligable_users as $user) { |
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if (!$this->settingsService->getNeedRemoveStaleImages($user)) { |
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// Completely skip this task for this user, seems that we already did full scan for him |
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$this->logDebug(sprintf('Skipping stale images removal for user %s as there is no need for it', $user)); |
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continue; |
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} |
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// Since method below can take long time, it is generator itself |
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$generator = $this->staleImagesRemovalForUser($user, $this->settingsService->getCurrentFaceModel()); |
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foreach ($generator as $_) { |
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yield; |
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} |
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$staleRemovedImages += $generator->getReturn(); |
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$this->settingsService->setNeedRemoveStaleImages(false, $user); |
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yield; |
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} |
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$this->context->propertyBag['StaleImagesRemovalTask_staleRemovedImages'] = $staleRemovedImages; |
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return true; |
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} |
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/** |
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* Gets all images in database for a given user. For each image, check if it |
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* actually present in filesystem (and there is no .nomedia for it) and removes |
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* it from database if it is not present. |
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* |
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* @param string $userId ID of the user for which to remove stale images for |
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* @param int $model Used model |
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* @return \Generator|int Returns generator during yielding and finally returns int, |
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* which represent number of stale images removed |
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*/ |
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private function staleImagesRemovalForUser(string $userId, int $model) { |
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$this->fileService->setupFS($userId); |
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$this->logDebug(sprintf('Getting all images for user %s', $userId)); |
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$allImages = $this->imageMapper->findImages($userId, $model); |
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$this->logDebug(sprintf('Found %d images for user %s', count($allImages), $userId)); |
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yield; |
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// Find if we stopped somewhere abruptly before. If we are, we need to start from that point. |
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// If there is value, we start from beggining. Important is that: |
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// * There needs to be some (any!) ordering here, we used "id" for ordering key |
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// * New images will be processed, or some might be checked more than once, and that is OK |
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// Important part is that we make continuous progess. |
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$lastChecked = $this->settingsService->getLastStaleImageChecked($userId); |
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$this->logDebug(sprintf('Last checked image id for user %s is %d', $userId, $lastChecked)); |
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yield; |
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// Now filter by those above last checked and sort remaining images |
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$allImages = array_filter($allImages, function ($i) use($lastChecked) { |
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return $i->id > $lastChecked; |
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}); |
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usort($allImages, function ($i1, $i2) { |
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return $i1->id <=> $i2->id; |
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}); |
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$this->logDebug(sprintf( |
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'After filtering and sorting, there is %d remaining stale images to check for user %s', |
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count($allImages), $userId)); |
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yield; |
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// Now iterate and check remaining images |
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$processed = 0; |
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$imagesRemoved = 0; |
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foreach ($allImages as $image) { |
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$file = $this->fileService->getFileById($image->getFile(), $userId); |
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// Delete image doesn't exist anymore in filesystem or it is under .nomedia |
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if (($file === null) || (!$this->fileService->isAllowedNode($file)) || |
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($this->fileService->isUnderNoDetection($file))) { |
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$this->deleteImage($image, $userId); |
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$imagesRemoved++; |
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} |
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// Remember last processed image |
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$this->settingsService->setLastStaleImageChecked($image->id, $userId); |
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// Yield from time to time |
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$processed++; |
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if ($processed % 10 === 0) { |
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$this->logDebug(sprintf('Processed %d/%d stale images for user %s', $processed, count($allImages), $userId)); |
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yield; |
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} |
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} |
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// Remove this value when we are done, so next cleanup can start from 0 |
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$this->settingsService->setLastStaleImageChecked(0, $userId); |
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return $imagesRemoved; |
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} |
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private function deleteImage(Image $image, string $userId) { |
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$this->logInfo(sprintf('Removing stale image %d for user %s', $image->id, $userId)); |
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// note that invalidatePersons depends on existence of faces for a given image, |
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// and we must invalidate before we delete faces! |
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// TODO: this is same method as in Watcher, find where to unify them. |
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$this->personMapper->invalidatePersons($image->id); |
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$this->faceMapper->removeFromImage($image->id); |
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$this->imageMapper->delete($image); |
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} |
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} |
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matiasdelellis /
facerecognition
