mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-08-26 20:45:47 +02:00
60 lines
1.8 KiB
PHP
60 lines
1.8 KiB
PHP
<?php
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/**
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* Wipe the cache of failed image manipulations. When {@link GDBackend} attempts to resample an image, it will write
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* the attempted manipulation to the cache and remove it from the cache if the resample is successful. The objective
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* of the cache is to prevent fatal errors (for example from exceeded memory limits) from occurring more than once.
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*
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* @package framework
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* @subpackage filesystem
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*/
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class CleanImageManipulationCache extends BuildTask {
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protected $title = 'Clean Image Manipulation Cache';
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protected $description = 'Clean the failed image manipulation cache. Use this to allow SilverStripe to attempt
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to resample images that have previously failed to resample (for example if memory limits were exceeded).';
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/**
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* Check that the user has appropriate permissions to execute this task
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*/
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public function init() {
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if(!Director::is_cli() && !Director::isDev() && !Permission::check('ADMIN')) {
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return Security::permissionFailure();
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}
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parent::init();
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}
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/**
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* Clear out the image manipulation cache
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* @param SS_HTTPRequest $request
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*/
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public function run($request) {
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$failedManipulations = 0;
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$processedImages = 0;
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$images = DataObject::get('Image');
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if($images && Image::get_backend() == "GDBackend") {
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$cache = SS_Cache::factory('GDBackend_Manipulations');
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foreach($images as $image) {
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$path = $image->getFullPath();
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if (file_exists($path)) {
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$key = md5(implode('_', array($path, filemtime($path))));
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if ($manipulations = unserialize($cache->load($key))) {
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$failedManipulations += count($manipulations);
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$processedImages++;
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$cache->remove($key);
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}
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}
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}
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}
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echo "Cleared $failedManipulations failed manipulations from
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$processedImages Image objects stored in the Database.";
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}
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}
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