src/Core/Config/JITPConfigAdapter.php

   1 <?php
   2 namespace Friendica\Core\Config;
   3
   4 use Friendica\Core\PConfig;
   5 use Friendica\Database\DBA;
   6
   7 /**
   8  * JustInTime User Configuration Adapter
   9  *
  10  * Default PConfig Adapter. Provides the best performance for pages loading few configuration variables.
  11  *
  12  * @author Hypolite Petovan <hypolite@mrpetovan.com>
  13  */
  14 class JITPConfigAdapter implements IPConfigAdapter
  15 {
  16         private $in_db;
  17
  18         public function load($uid, $cat)
  19         {
  20                 $pconfigs = DBA::select('pconfig', ['v', 'k'], ['cat' => $cat, 'uid' => $uid]);
  21                 if (DBA::isResult($pconfigs)) {
  22                         while ($pconfig = DBA::fetch($pconfigs)) {
  23                                 $k = $pconfig['k'];
  24
  25                                 PConfig::setPConfigValue($uid, $cat, $k, $pconfig['v']);
  26
  27                                 $this->in_db[$uid][$cat][$k] = true;
  28                         }
  29                 } else if ($cat != 'config') {
  30                         // Negative caching
  31                         PConfig::setPConfigValue($uid, $cat, "!<unset>!");
  32                 }
  33                 DBA::close($pconfigs);
  34         }
  35
  36         public function get($uid, $cat, $k, $default_value = null, $refresh = false)
  37         {
  38                 if (!$refresh) {
  39                         // Looking if the whole family isn't set
  40                         if (PConfig::getPConfigValue($uid, $cat) !== null) {
  41                                 if (PConfig::getPConfigValue($uid, $cat) === '!<unset>!') {
  42                                         return $default_value;
  43                                 }
  44                         }
  45
  46                         if (PConfig::getPConfigValue($uid, $cat, $k) !== null) {
  47                                 if (PConfig::getPConfigValue($uid, $cat, $k) === '!<unset>!') {
  48                                         return $default_value;
  49                                 }
  50                                 return PConfig::getPConfigValue($uid, $cat, $k);
  51                         }
  52                 }
  53
  54                 $pconfig = DBA::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
  55                 if (DBA::isResult($pconfig)) {
  56                         $val = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
  57
  58                         PConfig::setPConfigValue($uid, $cat, $k, $val);
  59
  60                         $this->in_db[$uid][$cat][$k] = true;
  61
  62                         return $val;
  63                 } else {
  64                         PConfig::setPConfigValue($uid, $cat, $k, '!<unset>!');
  65
  66                         $this->in_db[$uid][$cat][$k] = false;
  67
  68                         return $default_value;
  69                 }
  70         }
  71
  72         public function set($uid, $cat, $k, $value)
  73         {
  74                 // We store our setting values in a string variable.
  75                 // So we have to do the conversion here so that the compare below works.
  76                 // The exception are array values.
  77                 $dbvalue = (!is_array($value) ? (string)$value : $value);
  78
  79                 $stored = $this->get($uid, $cat, $k, null, true);
  80
  81                 if (($stored === $dbvalue) && $this->in_db[$uid][$cat][$k]) {
  82                         return true;
  83                 }
  84
  85                 PConfig::setPConfigValue($uid, $cat, $k, $value);
  86
  87                 // manage array value
  88                 $dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
  89
  90                 $result = DBA::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $k], true);
  91
  92                 if ($result) {
  93                         $this->in_db[$uid][$cat][$k] = true;
  94                 }
  95
  96                 return $result;
  97         }
  98
  99         public function delete($uid, $cat, $k)
 100         {
 101                 PConfig::deletePConfigValue($uid, $cat, $k);
 102
 103                 if (!empty($this->in_db[$uid][$cat][$k])) {
 104                         unset($this->in_db[$uid][$cat][$k]);
 105                 }
 106
 107                 $result = DBA::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
 108
 109                 return $result;
 110         }
 111 }