src/Core/PConfig.php

   1 <?php
   2 /**
   3  * User Configuration Class
   4  *
   5  * @file include/Core/PConfig.php
   6  *
   7  * @brief Contains the class with methods for user configuration
   8  */
   9 namespace Friendica\Core;
  10
  11 use Friendica\App;
  12 use Friendica\BaseObject;
  13
  14 /**
  15  * @brief Management of user configuration storage
  16  * Note:
  17  * Please do not store booleans - convert to 0/1 integer values
  18  * The PConfig::get() functions return boolean false for keys that are unset,
  19  * and this could lead to subtle bugs.
  20  */
  21 class PConfig extends BaseObject
  22 {
  23         /**
  24          * @var \Friendica\Core\Config\IPConfigAdapter
  25          */
  26         private static $adapter = null;
  27
  28         public static function init($uid)
  29         {
  30                 $a = self::getApp();
  31
  32                 // Database isn't ready or populated yet
  33                 if (!$a->getMode()->has(App\Mode::DBCONFIGAVAILABLE)) {
  34                         return;
  35                 }
  36
  37                 if ($a->getConfigValue('system', 'config_adapter') == 'preload') {
  38                         self::$adapter = new Config\PreloadPConfigAdapter($uid);
  39                 } else {
  40                         self::$adapter = new Config\JITPConfigAdapter($uid);
  41                 }
  42         }
  43
  44         /**
  45          * @brief Loads all configuration values of a user's config family into a cached storage.
  46          *
  47          * All configuration values of the given user are stored in global cache
  48          * which is available under the global variable $a->config[$uid].
  49          *
  50          * @param string $uid    The user_id
  51          * @param string $family The category of the configuration value
  52          *
  53          * @return void
  54          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  55          */
  56         public static function load($uid, $family)
  57         {
  58                 // Database isn't ready or populated yet
  59                 if (!self::getApp()->getMode()->has(App\Mode::DBCONFIGAVAILABLE)) {
  60                         return;
  61                 }
  62
  63                 if (empty(self::$adapter)) {
  64                         self::init($uid);
  65                 }
  66
  67                 self::$adapter->load($uid, $family);
  68         }
  69
  70         /**
  71          * @brief Get a particular user's config variable given the category name
  72          * ($family) and a key.
  73          *
  74          * Get a particular user's config value from the given category ($family)
  75          * and the $key from a cached storage in $a->config[$uid].
  76          *
  77          * @param string  $uid           The user_id
  78          * @param string  $family        The category of the configuration value
  79          * @param string  $key           The configuration key to query
  80          * @param mixed   $default_value optional, The value to return if key is not set (default: null)
  81          * @param boolean $refresh       optional, If true the config is loaded from the db and not from the cache (default: false)
  82          *
  83          * @return mixed Stored value or null if it does not exist
  84          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  85          */
  86         public static function get($uid, $family, $key, $default_value = null, $refresh = false)
  87         {
  88                 // Database isn't ready or populated yet
  89                 if (!self::getApp()->getMode()->has(App\Mode::DBCONFIGAVAILABLE)) {
  90                         return;
  91                 }
  92
  93                 if (empty(self::$adapter)) {
  94                         self::init($uid);
  95                 }
  96
  97                 return self::$adapter->get($uid, $family, $key, $default_value, $refresh);
  98         }
  99
 100         /**
 101          * @brief Sets a configuration value for a user
 102          *
 103          * Stores a config value ($value) in the category ($family) under the key ($key)
 104          * for the user_id $uid.
 105          *
 106          * @note  Please do not store booleans - convert to 0/1 integer values!
 107          *
 108          * @param string $uid    The user_id
 109          * @param string $family The category of the configuration value
 110          * @param string $key    The configuration key to set
 111          * @param string $value  The value to store
 112          *
 113          * @return bool Operation success
 114          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 115          */
 116         public static function set($uid, $family, $key, $value)
 117         {
 118                 // Database isn't ready or populated yet
 119                 if (!self::getApp()->getMode()->has(App\Mode::DBCONFIGAVAILABLE)) {
 120                         return false;
 121                 }
 122
 123                 if (empty(self::$adapter)) {
 124                         self::init($uid);
 125                 }
 126
 127                 return self::$adapter->set($uid, $family, $key, $value);
 128         }
 129
 130         /**
 131          * @brief Deletes the given key from the users's configuration.
 132          *
 133          * Removes the configured value from the stored cache in $a->config[$uid]
 134          * and removes it from the database.
 135          *
 136          * @param string $uid    The user_id
 137          * @param string $family The category of the configuration value
 138          * @param string $key    The configuration key to delete
 139          *
 140          * @return mixed
 141          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 142          */
 143         public static function delete($uid, $family, $key)
 144         {
 145                 // Database isn't ready or populated yet
 146                 if (!self::getApp()->getMode()->has(App\Mode::DBCONFIGAVAILABLE)) {
 147                         return false;
 148                 }
 149
 150                 if (empty(self::$adapter)) {
 151                         self::init($uid);
 152                 }
 153
 154                 return self::$adapter->delete($uid, $family, $key);
 155         }
 156 }