108 lines
2.1 KiB
PHP
108 lines
2.1 KiB
PHP
<?php
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namespace SilverStripe\TextExtraction\Cache\FileTextCache;
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use Psr\SimpleCache\CacheInterface;
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use SilverStripe\Assets\File;
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use SilverStripe\Core\Config\Configurable;
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use SilverStripe\Core\Flushable;
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use SilverStripe\Core\Injector\Injector;
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use SilverStripe\TextExtraction\Cache\FileTextCache;
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/**
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* Uses SS_Cache with a lifetime to cache extracted content
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*/
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class Cache implements FileTextCache, Flushable
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{
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use Configurable;
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/**
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* Lifetime of cache in seconds
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* Null defaults to 3600 (1 hour)
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*
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* @var int|null
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* @config
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*/
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private static $lifetime = null;
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/**
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* @return CacheInterface
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*/
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protected static function get_cache()
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{
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$for = sprintf('%s.%s', CacheInterface::class, 'FileTextCache_Cache');
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return Injector::inst()->get($for);
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}
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/**
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*
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* @param File $file
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* @return string
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*/
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protected function getKey(File $file)
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{
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return md5($file->getFilename() ?? '');
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}
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/**
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*
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* @param File $file
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* @return mixed
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*/
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public function load(File $file)
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{
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$key = $this->getKey($file);
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$cache = self::get_cache();
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return $cache->get($key);
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}
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/**
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* @param File $file
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* @param string $content
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* @return string
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*/
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public function save(File $file, $content)
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{
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$lifetime = $this->config()->get('lifetime') ?: 3600;
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$key = $this->getKey($file);
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$cache = self::get_cache();
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return $cache->set($key, $content, $lifetime);
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}
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/**
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* @return void
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*/
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public static function flush()
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{
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$cache = self::get_cache();
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$cache->clear();
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}
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/**
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* Alias for $this->flush()
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*
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* @return void
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*/
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public static function clear()
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{
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$cache = self::get_cache();
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$cache->clear();
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}
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/**
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*
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* @param File $file
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* @return bool
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*/
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public function invalidate(File $file)
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{
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$key = $this->getKey($file);
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$cache = self::get_cache();
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return $cache->delete($key);
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}
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}
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