friendica/src/Core/Config/JitConfiguration.php

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<?php
namespace Friendica\Core\Config;
use Friendica\Model;
/**
* This class is responsible for all system-wide configuration values in Friendica
* There are two types of storage
* - The Config-Files (loaded into the FileCache @see Cache\ConfigCache )
* - The Config-DB-Table (per Config-DB-model @see Model\Config\Config )
*/
class JitConfiguration extends Configuration
{
/** @var array */
private $in_db;
/**
* @param Cache\ConfigCache $configCache The configuration cache (based on the config-files)
* @param Model\Config\Config $configModel The configuration model
*/
public function __construct(Cache\ConfigCache $configCache, Model\Config\Config $configModel)
{
parent::__construct($configCache, $configModel);
$this->in_db = [];
// take the values of the given cache instead of loading them from the model again
$preSet = $configCache->getAll();
if (!empty($preSet)) {
foreach ($preSet as $cat => $data) {
foreach ($data as $key => $value) {
$this->in_db[$cat][$key] = true;
}
}
}
$this->load();
}
/**
* {@inheritDoc}
*
*/
public function load(string $cat = 'config')
{
// If not connected, do nothing
if (!$this->configModel->isConnected()) {
return;
}
$config = $this->configModel->load($cat);
foreach ($config[$cat] as $key => $value) {
$this->in_db[$cat][$key] = true;
}
// load the whole category out of the DB into the cache
$this->configCache->load($config, true);
}
/**
* {@inheritDoc}
*/
public function get(string $cat, string $key, $default_value = null, bool $refresh = false)
{
// if the value isn't loaded or refresh is needed, load it to the cache
if ($this->configModel->isConnected() &&
(empty($this->in_db[$cat][$key]) ||
$refresh)) {
$dbvalue = $this->configModel->get($cat, $key);
if (isset($dbvalue)) {
$this->configCache->set($cat, $key, $dbvalue);
unset($dbvalue);
$this->in_db[$cat][$key] = true;
}
}
// use the config cache for return
$result = $this->configCache->get($cat, $key);
return (isset($result)) ? $result : $default_value;
}
/**
* {@inheritDoc}
*/
public function set(string $cat, string $key, $value)
{
// set the cache first
$cached = $this->configCache->set($cat, $key, $value);
// If there is no connected adapter, we're finished
if (!$this->configModel->isConnected()) {
return $cached;
}
$stored = $this->configModel->set($cat, $key, $value);
$this->in_db[$cat][$key] = $stored;
return $cached && $stored;
}
/**
* @brief Deletes the given key from the system configuration.
*
* Removes the configured value from the stored cache in $this->configCache
* (@param string $cat The category of the configuration value
*
* @param string $key The configuration key to delete
*
* @return bool
* @see ConfigCache ) and removes it from the database (@see IConfigAdapter ).
*
*/
public function delete(string $cat, string $key)
{
$cacheRemoved = $this->configCache->delete($cat, $key);
if (isset($this->in_db[$cat][$key])) {
unset($this->in_db[$cat][$key]);
}
if (!$this->configModel->isConnected()) {
return $cacheRemoved;
}
$storeRemoved = $this->configModel->delete($cat, $key);
return $cacheRemoved || $storeRemoved;
}
}