src/Core/Config/JITPConfigAdapter.php

   1 <?php
   2 namespace Friendica\Core\Config;
   3
   4 use Friendica\Database\DBA;
   5
   6 /**
   7  * JustInTime User Configuration Adapter
   8  *
   9  * Default PConfig Adapter. Provides the best performance for pages loading few configuration variables.
  10  *
  11  * @author Hypolite Petovan <hypolite@mrpetovan.com>
  12  */
  13 class JITPConfigAdapter implements IPConfigAdapter
  14 {
  15         private $in_db;
  16
  17         /**
  18          * The config cache of this adapter
  19          * @var IPConfigCache
  20          */
  21         private $config;
  22
  23         /**
  24          * @param IPConfigCache $config The config cache of this adapter
  25          */
  26         public function __construct($config)
  27         {
  28                 $this->config = $config;
  29         }
  30
  31         public function load($uid, $cat)
  32         {
  33                 $pconfigs = DBA::select('pconfig', ['v', 'k'], ['cat' => $cat, 'uid' => $uid]);
  34                 if (DBA::isResult($pconfigs)) {
  35                         while ($pconfig = DBA::fetch($pconfigs)) {
  36                                 $k = $pconfig['k'];
  37
  38                                 $this->config->setP($uid, $cat, $k, $pconfig['v']);
  39
  40                                 $this->in_db[$uid][$cat][$k] = true;
  41                         }
  42                 } else if ($cat != 'config') {
  43                         // Negative caching
  44                         $this->config->setP($uid, $cat, null, "!<unset>!");
  45                 }
  46                 DBA::close($pconfigs);
  47         }
  48
  49         public function get($uid, $cat, $k, $default_value = null, $refresh = false)
  50         {
  51                 if (!$refresh) {
  52                         // Looking if the whole family isn't set
  53                         if ($this->config->getP($uid, $cat) !== null) {
  54                                 if ($this->config->getP($uid, $cat) === '!<unset>!') {
  55                                         return $default_value;
  56                                 }
  57                         }
  58
  59                         if ($this->config->getP($uid, $cat, $k) !== null) {
  60                                 if ($this->config->getP($uid, $cat, $k) === '!<unset>!') {
  61                                         return $default_value;
  62                                 }
  63                                 return $this->config->getP($uid, $cat, $k);
  64                         }
  65                 }
  66
  67                 $pconfig = DBA::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
  68                 if (DBA::isResult($pconfig)) {
  69                         $val = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
  70
  71                         $this->config->setP($uid, $cat, $k, $val);
  72
  73                         $this->in_db[$uid][$cat][$k] = true;
  74
  75                         return $val;
  76                 } else {
  77                         $this->config->setP($uid, $cat, $k, '!<unset>!');
  78
  79                         $this->in_db[$uid][$cat][$k] = false;
  80
  81                         return $default_value;
  82                 }
  83         }
  84
  85         public function set($uid, $cat, $k, $value)
  86         {
  87                 // We store our setting values in a string variable.
  88                 // So we have to do the conversion here so that the compare below works.
  89                 // The exception are array values.
  90                 $dbvalue = (!is_array($value) ? (string)$value : $value);
  91
  92                 $stored = $this->get($uid, $cat, $k, null, true);
  93
  94                 if (($stored === $dbvalue) && $this->in_db[$uid][$cat][$k]) {
  95                         return true;
  96                 }
  97
  98                 $this->config->setP($uid, $cat, $k, $value);
  99
 100                 // manage array value
 101                 $dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
 102
 103                 $result = DBA::update('pconfig', ['v' => $dbvalue], ['uid' => $uid, 'cat' => $cat, 'k' => $k], true);
 104
 105                 if ($result) {
 106                         $this->in_db[$uid][$cat][$k] = true;
 107                 }
 108
 109                 return $result;
 110         }
 111
 112         public function delete($uid, $cat, $k)
 113         {
 114                 $this->config->deleteP($uid, $cat, $k);
 115
 116                 if (!empty($this->in_db[$uid][$cat][$k])) {
 117                         unset($this->in_db[$uid][$cat][$k]);
 118                 }
 119
 120                 $result = DBA::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
 121
 122                 return $result;
 123         }
 124 }