Andrew Nicols
86 lines
2.9 KiB
PHP
86 lines
2.9 KiB
PHP
<?php
|
|
// This file is part of Moodle - http://moodle.org/
|
|
//
|
|
// Moodle 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 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// Moodle 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
|
|
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
use core_cache\versionable_data_source_interface;
|
|
|
|
/**
|
|
* A dummy datasource which supports versioning.
|
|
*
|
|
* @package core_cache
|
|
* @copyright 2021 The Open University
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
class cache_phpunit_dummy_datasource_versionable extends cache_phpunit_dummy_datasource implements
|
|
versionable_data_source_interface
|
|
{
|
|
/** @var array Data in cache */
|
|
protected $data = [];
|
|
|
|
/** @var cache_phpunit_dummy_datasource_versionable Last created instance */
|
|
protected static $lastinstance;
|
|
|
|
/**
|
|
* Returns an instance of this object for use with the cache.
|
|
*
|
|
* @param cache_definition $definition
|
|
* @return cache_phpunit_dummy_datasource New object
|
|
*/
|
|
public static function get_instance_for_cache(cache_definition $definition): cache_phpunit_dummy_datasource_versionable {
|
|
self::$lastinstance = new cache_phpunit_dummy_datasource_versionable();
|
|
return self::$lastinstance;
|
|
}
|
|
|
|
/**
|
|
* Gets the last instance that was created.
|
|
*
|
|
* @return cache_phpunit_dummy_datasource_versionable
|
|
*/
|
|
public static function get_last_instance(): cache_phpunit_dummy_datasource_versionable {
|
|
return self::$lastinstance;
|
|
}
|
|
|
|
/**
|
|
* Sets up the datasource so that it has a value for a particular key.
|
|
*
|
|
* @param string $key Key
|
|
* @param int $version Version for key
|
|
* @param mixed $data
|
|
*/
|
|
public function has_value(string $key, int $version, $data): void {
|
|
$this->data[$key] = new \core_cache\version_wrapper($data, $version);
|
|
}
|
|
|
|
/**
|
|
* Loads versioned data.
|
|
*
|
|
* @param int|string $key Key
|
|
* @param int $requiredversion Minimum version number
|
|
* @param mixed $actualversion Should be set to the actual version number retrieved
|
|
* @return mixed Data retrieved from cache or false if none
|
|
*/
|
|
public function load_for_cache_versioned($key, int $requiredversion, &$actualversion) {
|
|
if (!array_key_exists($key, $this->data)) {
|
|
return false;
|
|
}
|
|
$value = $this->data[$key];
|
|
if ($value->version < $requiredversion) {
|
|
return false;
|
|
}
|
|
$actualversion = $value->version;
|
|
return $value->data;
|
|
}
|
|
}
|