src/Core/Config/JITPConfigAdapter.php

   1 <?php
   2 namespace Friendica\Core\Config;
   3
   4 use Friendica\BaseObject;
   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 extends BaseObject implements IPConfigAdapter
  15 {
  16         private $in_db;
  17
  18         public function load($uid, $cat)
  19         {
  20                 $a = self::getApp();
  21
  22                 $pconfigs = DBA::select('pconfig', ['v', 'k'], ['cat' => $cat, 'uid' => $uid]);
  23                 if (DBA::isResult($pconfigs)) {
  24                         while ($pconfig = DBA::fetch($pconfigs)) {
  25                                 $k = $pconfig['k'];
  26
  27                                 self::getApp()->setPConfigValue($uid, $cat, $k, $pconfig['v']);
  28
  29                                 $this->in_db[$uid][$cat][$k] = true;
  30                         }
  31                 } else if ($cat != 'config') {
  32                         // Negative caching
  33                         $a->config[$uid][$cat] = "!<unset>!";
  34                 }
  35                 DBA::close($pconfigs);
  36         }
  37
  38         public function get($uid, $cat, $k, $default_value = null, $refresh = false)
  39         {
  40                 $a = self::getApp();
  41
  42                 if (!$refresh) {
  43                         // Looking if the whole family isn't set
  44                         if (isset($a->config[$uid][$cat])) {
  45                                 if ($a->config[$uid][$cat] === '!<unset>!') {
  46                                         return $default_value;
  47                                 }
  48                         }
  49
  50                         if (isset($a->config[$uid][$cat][$k])) {
  51                                 if ($a->config[$uid][$cat][$k] === '!<unset>!') {
  52                                         return $default_value;
  53                                 }
  54                                 return $a->config[$uid][$cat][$k];
  55                         }
  56                 }
  57
  58                 $pconfig = DBA::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
  59                 if (DBA::isResult($pconfig)) {
  60                         $val = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
  61
  62                         self::getApp()->setPConfigValue($uid, $cat, $k, $val);
  63
  64                         $this->in_db[$uid][$cat][$k] = true;
  65
  66                         return $val;
  67                 } else {
  68                         self::getApp()->setPConfigValue($uid, $cat, $k, '!<unset>!');
  69
  70                         $this->in_db[$uid][$cat][$k] = false;
  71
  72                         return $default_value;
  73                 }
  74         }
  75
  76         public function set($uid, $cat, $k, $value)
  77         {
  78                 // We store our setting values in a string variable.
  79                 // So we have to do the conversion here so that the compare below works.
  80                 // The exception are array values.
  81                 $dbvalue = (!is_array($value) ? (string)$value : $value);
  82
  83                 $stored = $this->get($uid, $cat, $k, null, true);
  84
  85                 if (($stored === $dbvalue) && $this->in_db[$uid][$cat][$k]) {
  86                         return true;
  87                 }
  88
  89                 self::getApp()->setPConfigValue($uid, $cat, $k, $value);
  90
  91                 // manage array value
  92                 $dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
  93
  94                 $result = DBA::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $k], true);
  95
  96                 if ($result) {
  97                         $this->in_db[$uid][$cat][$k] = true;
  98                 }
  99
 100                 return $result;
 101         }
 102
 103         public function delete($uid, $cat, $k)
 104         {
 105                 self::getApp()->deletePConfigValue($uid, $cat, $k);
 106
 107                 if (!empty($this->in_db[$uid][$cat][$k])) {
 108                         unset($this->in_db[$uid][$cat][$k]);
 109                 }
 110
 111                 $result = DBA::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
 112
 113                 return $result;
 114         }
 115 }