47 lines
1.1 KiB
PHP
47 lines
1.1 KiB
PHP
<?php
|
|
|
|
namespace Friendica\Core\Cache;
|
|
|
|
/**
|
|
* Trait TraitCompareSetDelete
|
|
*
|
|
* This Trait is to compensate non native "exclusive" sets/deletes in caches
|
|
*
|
|
* @package Friendica\Core\Cache
|
|
*/
|
|
trait TraitCompareSet
|
|
{
|
|
abstract public function get($key);
|
|
|
|
abstract public function set($key, $value, $ttl = Cache::FIVE_MINUTES);
|
|
|
|
abstract public function delete($key);
|
|
|
|
abstract public function add($key, $value, $ttl = Cache::FIVE_MINUTES);
|
|
|
|
/**
|
|
* NonNative - Compares if the old value is set and sets the new value
|
|
*
|
|
* @param string $key The cache key
|
|
* @param mixed $oldValue The old value we know from the cache
|
|
* @param mixed $newValue The new value we want to set
|
|
* @param int $ttl The cache lifespan, must be one of the Cache constants
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function compareSet($key, $oldValue, $newValue, $ttl = Cache::FIVE_MINUTES) {
|
|
if ($this->add($key . "_lock", true)) {
|
|
if ($this->get($key) === $oldValue) {
|
|
$this->set($key, $newValue, $ttl);
|
|
$this->delete($key . "_lock");
|
|
return true;
|
|
} else {
|
|
$this->delete($key . "_lock");
|
|
return false;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
}
|