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<?php |
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declare(strict_types=1); |
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/** |
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* @copyright 2022 Anna Larch <[email protected]> |
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* @author Anna Larch <[email protected]> |
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* |
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* @license AGPL-3.0-or-later |
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* |
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* This code 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, version 3, |
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* as published by the Free Software Foundation. |
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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, version 3, |
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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 OC\Group; |
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use OCP\Cache\CappedMemoryCache; |
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use OCP\EventDispatcher\Event; |
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use OCP\EventDispatcher\IEventListener; |
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use OCP\Group\Events\GroupChangedEvent; |
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use OCP\ICache; |
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use OCP\ICacheFactory; |
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use OCP\IGroupManager; |
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/** |
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* Class that cache the relation Group ID -> Display name |
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* |
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* This saves fetching the group from the backend for "just" the display name |
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*/ |
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class DisplayNameCache implements IEventListener { |
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private CappedMemoryCache $cache; |
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private ICache $memCache; |
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private IGroupManager $groupManager; |
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public function __construct(ICacheFactory $cacheFactory, IGroupManager $groupManager) { |
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$this->cache = new CappedMemoryCache(); |
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$this->memCache = $cacheFactory->createDistributed('groupDisplayNameMappingCache'); |
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$this->groupManager = $groupManager; |
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} |
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public function getDisplayName(string $groupId): ?string { |
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if (isset($this->cache[$groupId])) { |
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return $this->cache[$groupId]; |
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} |
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$displayName = $this->memCache->get($groupId); |
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if ($displayName) { |
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$this->cache[$groupId] = $displayName; |
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return $displayName; |
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} |
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$group = $this->groupManager->get($groupId); |
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if ($group) { |
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$displayName = $group->getDisplayName(); |
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} else { |
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$displayName = null; |
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} |
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$this->cache[$groupId] = $displayName; |
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$this->memCache->set($groupId, $displayName, 60 * 10); // 10 minutes |
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return $displayName; |
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} |
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public function clear(): void { |
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$this->cache = new CappedMemoryCache(); |
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$this->memCache->clear(); |
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} |
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public function handle(Event $event): void { |
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if ($event instanceof GroupChangedEvent && $event->getFeature() === 'displayName') { |
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$groupId = $event->getGroup()->getGID(); |
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$newDisplayName = $event->getValue(); |
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$this->cache[$groupId] = $newDisplayName; |
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$this->memCache->set($groupId, $newDisplayName, 60 * 10); // 10 minutes |
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} |
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} |
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} |
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nextcloud /
server
