silverstripe-cms/tasks/RebuildStaticCacheTask.php

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<?php
/**
* @package cms
* @subpackage tasks
*
* @todo Make this use the Task interface once it gets merged back into trunk
*/
class RebuildStaticCacheTask extends Controller {
function init() {
parent::init();
Versioned::reading_stage('live');
$canAccess = (Director::isDev() || Director::is_cli() || Permission::check("ADMIN"));
if(!$canAccess) return Security::permissionFailure($this);
}
function index() {
StaticPublisher::set_echo_progress(true);
$page = singleton('Page');
if(!$page->hasMethod('allPagesToCache')) {
user_error(
'RebuildStaticCacheTask::index(): Please define a method "allPagesToCache()" on your Page class to return all pages affected by a cache refresh.',
E_USER_ERROR
);
}
if(!empty($_GET['urls'])) $urls = $_GET['urls'];
else $urls = $page->allPagesToCache();
$this->rebuildCache($urls, true);
}
/**
* Rebuilds the static cache for the pages passed through via $urls
* @param array $urls The URLs of pages to re-fetch and cache.
*/
function rebuildCache($urls, $removeAll = true) {
if(!is_array($urls)) return; // $urls must be an array
if(!Director::is_cli()) echo "<pre>\n";
echo "Rebuilding cache.\nNOTE: Please ensure that this page ends with 'Done!' - if not, then something may have gone wrong.\n\n";
$page = singleton('Page');
foreach($urls as $i => $url) {
if($url && !is_string($url)) {
user_error("Bad URL: " . var_export($url, true), E_USER_WARNING);
continue;
}
if(substr($url,-1) == '/') $url = substr($url,0,-1);
$urls[$i] = $url;
}
$urls = array_unique($urls);
sort($urls);
$mappedUrls = $page->urlsToPaths($urls);
$start = isset($_GET['start']) ? $_GET['start'] : 0;
$count = isset($_GET['count']) ? $_GET['count'] : sizeof($urls);
if(($start + $count) > sizeof($urls)) $count = sizeof($urls) - $start;
$urls = array_slice($urls, $start, $count);
if(!isset($_GET['urls']) && $start == 0 && file_exists("../cache")) {
echo "Removing stale cache files... \n";
flush();
$cacheBaseDir = $page->getDestDir();
if (FilesystemPublisher::$domain_based_caching) {
// Glob each dir, then glob each one of those
foreach(glob('../cache/*', GLOB_ONLYDIR) as $cacheDir) {
foreach(glob($cacheDir.'/*') as $cacheFile) {
$searchCacheFile = trim(str_replace($cacheBaseDir, '', $cacheFile), '\/');
if (!in_array($searchCacheFile, $mappedUrls)) {
echo " * Deleting $cacheFile\n";
@unlink($cacheFile);
}
}
}
} else {
}
echo "done.\n\n";
}
echo "Rebuilding cache from " . sizeof($mappedUrls) . " urls...\n\n";
$page->extend('publishPages', $mappedUrls);
echo "\n\n== Done! ==";
}
function show() {
$urls = singleton('Page')->allPagesToCache();
echo "<pre>\n";
print_r($urls);
echo "\n</pre>";
}
}