forked from mirror/Part-DB.Part-DB-server
38 lines
No EOL
1.1 KiB
PHP
38 lines
No EOL
1.1 KiB
PHP
<?php
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namespace App\Services\Trees;
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use Symfony\Contracts\Cache\CacheInterface;
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use Symfony\Contracts\Cache\ItemInterface;
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use Symfony\Contracts\Cache\TagAwareCacheInterface;
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final class SidebarTreeUpdater
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{
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private const CACHE_KEY = 'sidebar_tree_updated';
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private const TTL = 60 * 60 * 24; // 24 hours
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private CacheInterface $cache;
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public function __construct(TagAwareCacheInterface $treeCache)
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{
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$this->cache = $treeCache;
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}
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/**
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* Returns the time when the sidebar tree was updated the last time.
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* The frontend uses this information to reload the sidebar tree.
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* @return \DateTimeInterface
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* @throws \Psr\SimpleCache\InvalidArgumentException
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*/
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public function getLastTreeUpdate(): \DateTimeInterface
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{
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return $this->cache->get(self::CACHE_KEY, function (ItemInterface $item) {
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$item->expiresAfter(self::TTL);
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//This tag and therfore this whole cache gets cleared by TreeCacheInvalidationListener when a structural element is changed
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$item->tag('sidebar_tree_update');
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return new \DateTime();
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});
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}
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} |