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<?php
declare(strict_types=1);
/**
* @copyright Copyright 2022 Carl Schwan <carl@carlschwan.eu>
* @license AGPL-3.0-or-later
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Metadata;
use OC\Files\Filesystem;
use OCP\EventDispatcher\Event;
use OCP\EventDispatcher\IEventListener;
use OCP\Files\Events\Node\NodeDeletedEvent;
use OCP\Files\Events\Node\NodeWrittenEvent;
use OCP\Files\Events\NodeRemovedFromCache;
use OCP\Files\File;
use OCP\Files\Node;
use OCP\Files\NotFoundException;
use OCP\Files\FileInfo;
class FileEventListener implements IEventListener {
private IMetadataManager $manager;
public function __construct(IMetadataManager $manager) {
$this->manager = $manager;
}
private function shouldExtractMetadata(Node $node): bool {
try {
if ($node->getMimetype() === 'httpd/unix-directory') {
return false;
}
} catch (NotFoundException $e) {
return false;
}
if ($node->getSize(false) <= 0) {
return false;
}
$path = $node->getPath();
// TODO make this more dynamic, we have the same issue in other places
return !str_starts_with($path, 'appdata_') && !str_starts_with($path, 'files_versions/') && !str_starts_with($path, 'files_trashbin/');
}
public function handle(Event $event): void {
if ($event instanceof NodeRemovedFromCache) {
$view = Filesystem::getView();
$info = $view->getFileInfo($event->getPath());
if ($info && $info->getType() === FileInfo::TYPE_FILE) {
$this->manager->clearMetadata($info->getId());
}
}
if ($event instanceof NodeDeletedEvent) {
$node = $event->getNode();
if ($this->shouldExtractMetadata($node)) {
/** @var File $node */
$this->manager->clearMetadata($event->getNode()->getId());
}
}
if ($event instanceof NodeWrittenEvent) {
$node = $event->getNode();
if ($this->shouldExtractMetadata($node)) {
/** @var File $node */
$this->manager->generateMetadata($event->getNode(), false);
}
}
}
}
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