139 lines
2.9 KiB
PHP
139 lines
2.9 KiB
PHP
<?php
|
|
/**
|
|
* @file src/Core/Cache.php
|
|
*/
|
|
namespace Friendica\Core;
|
|
|
|
use Friendica\Core\Cache\CacheDriverFactory;
|
|
|
|
/**
|
|
* @brief Class for storing data for a short time
|
|
*/
|
|
class Cache extends \Friendica\BaseObject
|
|
{
|
|
const MONTH = 2592000;
|
|
const WEEK = 604800;
|
|
const DAY = 86400;
|
|
const HOUR = 3600;
|
|
const HALF_HOUR = 1800;
|
|
const QUARTER_HOUR = 900;
|
|
const FIVE_MINUTES = 300;
|
|
const MINUTE = 60;
|
|
const INFINITE = 0;
|
|
|
|
/**
|
|
* @var Cache\ICacheDriver
|
|
*/
|
|
private static $driver = null;
|
|
public static $driver_class = null;
|
|
public static $driver_name = null;
|
|
|
|
public static function init()
|
|
{
|
|
self::$driver_name = Config::get('system', 'cache_driver', 'database');
|
|
self::$driver = CacheDriverFactory::create(self::$driver_name);
|
|
self::$driver_class = get_class(self::$driver);
|
|
}
|
|
|
|
/**
|
|
* Returns the current cache driver
|
|
*
|
|
* @return Cache\ICacheDriver
|
|
*/
|
|
private static function getDriver()
|
|
{
|
|
if (self::$driver === null) {
|
|
self::init();
|
|
}
|
|
|
|
return self::$driver;
|
|
}
|
|
|
|
/**
|
|
* @brief Returns all the cache keys sorted alphabetically
|
|
*
|
|
* @param string $prefix Prefix of the keys (optional)
|
|
*
|
|
* @return array Empty if the driver doesn't support this feature
|
|
*/
|
|
public static function getAllKeys($prefix = null)
|
|
{
|
|
$time = microtime(true);
|
|
|
|
$return = self::getDriver()->getAllKeys($prefix);
|
|
|
|
self::getApp()->saveTimestamp($time, 'cache');
|
|
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* @brief Fetch cached data according to the key
|
|
*
|
|
* @param string $key The key to the cached data
|
|
*
|
|
* @return mixed Cached $value or "null" if not found
|
|
*/
|
|
public static function get($key)
|
|
{
|
|
$time = microtime(true);
|
|
|
|
$return = self::getDriver()->get($key);
|
|
|
|
self::getApp()->saveTimestamp($time, 'cache');
|
|
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* @brief Put data in the cache according to the key
|
|
*
|
|
* The input $value can have multiple formats.
|
|
*
|
|
* @param string $key The key to the cached data
|
|
* @param mixed $value The value that is about to be stored
|
|
* @param integer $duration The cache lifespan
|
|
*
|
|
* @return bool
|
|
*/
|
|
public static function set($key, $value, $duration = self::MONTH)
|
|
{
|
|
$time = microtime(true);
|
|
|
|
$return = self::getDriver()->set($key, $value, $duration);
|
|
|
|
self::getApp()->saveTimestamp($time, 'cache_write');
|
|
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* @brief Delete a value from the cache
|
|
*
|
|
* @param string $key The key to the cached data
|
|
*
|
|
* @return bool
|
|
*/
|
|
public static function delete($key)
|
|
{
|
|
$time = microtime(true);
|
|
|
|
$return = self::getDriver()->delete($key);
|
|
|
|
self::getApp()->saveTimestamp($time, 'cache_write');
|
|
|
|
return $return;
|
|
}
|
|
|
|
/**
|
|
* @brief Remove outdated data from the cache
|
|
*
|
|
* @param boolean $outdated just remove outdated values
|
|
*
|
|
* @return void
|
|
*/
|
|
public static function clear($outdated = true)
|
|
{
|
|
return self::getDriver()->clear($outdated);
|
|
}
|
|
}
|