pos/is4c-nf/lib/LocalStorage/LaneCache.php
<?php
/*******************************************************************************
Copyright 2015 Whole Foods Co-op
This file is part of IT CORE.
IT CORE is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
IT CORE is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
in the file license.txt along with IT CORE; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*********************************************************************************/
namespace COREPOS\pos\lib\LocalStorage;
/**
@class LaneCache
Wraps CORE's PSR-6 cache implementation because
1) with no real DI the singleton object avoids reloading from file
2) easier to swap out with a "good" cache later
*/
class LaneCache
{
private static $instance = null;
private static $changed = false;
private static function init()
{
if (self::$instance === null) {
if (function_exists('opcache_compile_file')) {
self::$instance = new \COREPOS\common\cache\php\CacheItemPool('lane.cache');
} else {
self::$instance = new \COREPOS\common\cache\file\CacheItemPool('lane.cache');
}
}
}
public static function get($key)
{
self::init();
return self::$instance->getItem($key);
}
public static function set($item)
{
self::init();
self::$instance->saveDeferred($item);
if (self::$changed === false) {
register_shutdown_function(array('COREPOS\\pos\\lib\\LocalStorage\\LaneCache', 'flush'));
self::$changed = true;
}
}
public static function clear()
{
self::init();
self::$instance->clear();
self::$instance->commit();
}
public static function flush()
{
self::init();
self::$instance->commit();
}
}