mirror of https://github.com/friendica/friendica
144 lines
3.7 KiB
PHP
144 lines
3.7 KiB
PHP
<?php
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/**
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* System Configuration Class
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*
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* @file include/Core/Config.php
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*
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* @brief Contains the class with methods for system configuration
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*/
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namespace Friendica\Core;
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use Friendica\Core\Config\IConfigAdapter;
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use Friendica\Core\Config\IConfigCache;
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/**
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* @brief Arbitrary system configuration storage
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*
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* Note:
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* If we ever would decide to return exactly the variable type as entered,
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* we will have fun with the additional features. :-)
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*/
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class Config
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{
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/**
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* @var IConfigAdapter
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*/
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private static $adapter;
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/**
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* @var IConfigCache
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*/
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private static $config;
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/**
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* Initialize the config with only the cache
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*
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* @param IConfigCache $config The configuration cache
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*/
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public static function init($config)
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{
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self::$config = $config;
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}
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/**
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* Add the adapter for DB-backend
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*
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* @param $adapter
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*/
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public static function setAdapter($adapter)
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{
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self::$adapter = $adapter;
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}
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/**
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* @brief Loads all configuration values of family into a cached storage.
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*
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* All configuration values of the system are stored in global cache
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* which is available under the global variable self::$config
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*
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* @param string $family The category of the configuration value
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*
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* @return void
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*/
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public static function load($family = "config")
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{
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if (!isset(self::$adapter)) {
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return;
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}
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self::$adapter->load($family);
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}
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/**
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* @brief Get a particular user's config variable given the category name
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* ($family) and a key.
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*
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* Get a particular config value from the given category ($family)
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* and the $key from a cached storage in static::config[$uid].
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* $instore is only used by the set_config function
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* to determine if the key already exists in the DB
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* If a key is found in the DB but doesn't exist in
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* local config cache, pull it into the cache so we don't have
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* to hit the DB again for this item.
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*
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* @param string $family The category of the configuration value
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* @param string $key The configuration key to query
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* @param mixed $default_value optional, The value to return if key is not set (default: null)
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* @param boolean $refresh optional, If true the config is loaded from the db and not from the cache (default: false)
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*
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* @return mixed Stored value or null if it does not exist
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*/
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public static function get($family, $key, $default_value = null, $refresh = false)
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{
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if (!isset(self::$adapter)) {
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return self::$config->get($family, $key, $default_value);
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}
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return self::$adapter->get($family, $key, $default_value, $refresh);
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}
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/**
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* @brief Sets a configuration value for system config
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*
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* Stores a config value ($value) in the category ($family) under the key ($key)
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* for the user_id $uid.
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*
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* Note: Please do not store booleans - convert to 0/1 integer values!
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*
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* @param string $family The category of the configuration value
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* @param string $key The configuration key to set
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* @param mixed $value The value to store
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*
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* @return bool Operation success
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*/
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public static function set($family, $key, $value)
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{
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if (!isset(self::$adapter)) {
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self::$config->set($family, $key, $value);
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return true;
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}
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return self::$adapter->set($family, $key, $value);
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}
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/**
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* @brief Deletes the given key from the system configuration.
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*
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* Removes the configured value from the stored cache in Config::$config
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* and removes it from the database.
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*
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* @param string $family The category of the configuration value
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* @param string $key The configuration key to delete
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*
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* @return mixed
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*/
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public static function delete($family, $key)
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{
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if (!isset(self::$adapter)) {
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self::$config->delete($family, $key);
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}
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return self::$adapter->delete($family, $key);
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}
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}
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