src/Core/Config/JITPConfigAdapter.php

   1 <?php
   2 namespace Friendica\Core\Config;
   3
   4 use dba;
   5 use Friendica\BaseObject;
   6 use Friendica\Database\DBM;
   7
   8 require_once 'include/dba.php';
   9
  10 /**
  11  * JustInTime User Configuration Adapter
  12  *
  13  * Default PConfig Adapter. Provides the best performance for pages loading few configuration variables.
  14  *
  15  * @author Hypolite Petovan <mrpetovan@gmail.com>
  16  */
  17 class JITPConfigAdapter extends BaseObject implements IPConfigAdapter
  18 {
  19         private $in_db;
  20
  21         public function load($uid, $cat)
  22         {
  23                 $a = self::getApp();
  24
  25                 $pconfigs = dba::select('pconfig', ['v', 'k'], ['cat' => $cat, 'uid' => $uid]);
  26                 if (DBM::is_result($pconfigs)) {
  27                         while ($pconfig = dba::fetch($pconfigs)) {
  28                                 $k = $pconfig['k'];
  29
  30                                 self::getApp()->setPConfigValue($uid, $cat, $k, $pconfig['v']);
  31
  32                                 $this->in_db[$uid][$cat][$k] = true;
  33                         }
  34                 } else if ($cat != 'config') {
  35                         // Negative caching
  36                         $a->config[$uid][$cat] = "!<unset>!";
  37                 }
  38                 dba::close($pconfigs);
  39         }
  40
  41         public function get($uid, $cat, $k, $default_value = null, $refresh = false)
  42         {
  43                 $a = self::getApp();
  44
  45                 if (!$refresh) {
  46                         // Looking if the whole family isn't set
  47                         if (isset($a->config[$uid][$cat])) {
  48                                 if ($a->config[$uid][$cat] === '!<unset>!') {
  49                                         return $default_value;
  50                                 }
  51                         }
  52
  53                         if (isset($a->config[$uid][$cat][$k])) {
  54                                 if ($a->config[$uid][$cat][$k] === '!<unset>!') {
  55                                         return $default_value;
  56                                 }
  57                                 return $a->config[$uid][$cat][$k];
  58                         }
  59                 }
  60
  61                 $pconfig = dba::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
  62                 if (DBM::is_result($pconfig)) {
  63                         $val = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
  64
  65                         self::getApp()->setPConfigValue($uid, $cat, $k, $val);
  66
  67                         $this->in_db[$uid][$cat][$k] = true;
  68
  69                         return $val;
  70                 } else {
  71                         self::getApp()->setPConfigValue($uid, $cat, $k, '!<unset>!');
  72
  73                         $this->in_db[$uid][$cat][$k] = false;
  74
  75                         return $default_value;
  76                 }
  77         }
  78
  79         public function set($uid, $cat, $k, $value)
  80         {
  81                 // We store our setting values in a string variable.
  82                 // So we have to do the conversion here so that the compare below works.
  83                 // The exception are array values.
  84                 $dbvalue = (!is_array($value) ? (string)$value : $value);
  85
  86                 $stored = $this->get($uid, $cat, $k, null, true);
  87
  88                 if (($stored === $dbvalue) && $this->in_db[$uid][$cat][$k]) {
  89                         return true;
  90                 }
  91
  92                 self::getApp()->setPConfigValue($uid, $cat, $k, $value);
  93
  94                 // manage array value
  95                 $dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
  96
  97                 $result = dba::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $k], true);
  98
  99                 if ($result) {
 100                         $this->in_db[$uid][$cat][$k] = true;
 101                         return $value;
 102                 }
 103
 104                 return $result;
 105         }
 106
 107         public function delete($uid, $cat, $k)
 108         {
 109                 self::getApp()->deletePConfigValue($uid, $cat, $k);
 110
 111                 if (!empty($this->in_db[$uid][$cat][$k])) {
 112                         unset($this->in_db[$uid][$cat][$k]);
 113                 }
 114
 115                 $result = dba::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
 116
 117                 return $result;
 118         }
 119 }