mirror of https://github.com/friendica/friendica
142 lines
3.5 KiB
PHP
142 lines
3.5 KiB
PHP
<?php
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/**
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* @copyright Copyright (C) 2020, Friendica
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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namespace Friendica\Core\Config;
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use Friendica\Core\BaseConfig;
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use Friendica\Model;
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/**
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* This class implements the Just-In-Time configuration, which will cache
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* config values in a cache, once they are retrieved.
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*
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* Default Configuration type.
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* Provides the best performance for pages loading few configuration variables.
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*/
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class JitConfig extends BaseConfig
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{
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/**
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* @var array Array of already loaded db values (even if there was no value)
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*/
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private $db_loaded;
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/**
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* @param Cache $configCache The configuration cache (based on the config-files)
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* @param Model\Config\Config $configModel The configuration model
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*/
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public function __construct(Cache $configCache, Model\Config\Config $configModel)
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{
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parent::__construct($configCache, $configModel);
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$this->db_loaded = [];
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$this->load();
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}
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/**
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* {@inheritDoc}
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*
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*/
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public function load(string $cat = 'config')
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{
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// If not connected, do nothing
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if (!$this->configModel->isConnected()) {
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return;
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}
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$config = $this->configModel->load($cat);
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if (!empty($config[$cat])) {
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foreach ($config[$cat] as $key => $value) {
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$this->db_loaded[$cat][$key] = true;
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}
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}
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// load the whole category out of the DB into the cache
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$this->configCache->load($config, Cache::SOURCE_DB);
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}
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/**
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* {@inheritDoc}
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*/
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public function get(string $cat, string $key, $default_value = null, bool $refresh = false)
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{
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// if the value isn't loaded or refresh is needed, load it to the cache
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if ($this->configModel->isConnected() &&
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(empty($this->db_loaded[$cat][$key]) ||
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$refresh)) {
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$dbvalue = $this->configModel->get($cat, $key);
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if (isset($dbvalue)) {
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$this->configCache->set($cat, $key, $dbvalue);
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unset($dbvalue);
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}
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$this->db_loaded[$cat][$key] = true;
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}
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// use the config cache for return
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$result = $this->configCache->get($cat, $key);
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return (isset($result)) ? $result : $default_value;
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}
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/**
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* {@inheritDoc}
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*/
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public function set(string $cat, string $key, $value)
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{
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// set the cache first
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$cached = $this->configCache->set($cat, $key, $value);
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// If there is no connected adapter, we're finished
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if (!$this->configModel->isConnected()) {
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return $cached;
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}
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$stored = $this->configModel->set($cat, $key, $value);
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$this->db_loaded[$cat][$key] = $stored;
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return $cached && $stored;
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}
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/**
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* {@inheritDoc}
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*/
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public function delete(string $cat, string $key)
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{
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$cacheRemoved = $this->configCache->delete($cat, $key);
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if (isset($this->db_loaded[$cat][$key])) {
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unset($this->db_loaded[$cat][$key]);
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}
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if (!$this->configModel->isConnected()) {
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return $cacheRemoved;
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}
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$storeRemoved = $this->configModel->delete($cat, $key);
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return $cacheRemoved || $storeRemoved;
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}
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}
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