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 PConfigAdapter
  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                                 $a->config[$uid][$cat][$k] = $pconfig['v'];
  30                                 $this->in_db[$uid][$cat][$k] = true;
  31                         }
  32                 } else if ($cat != 'config') {
  33                         // Negative caching
  34                         $a->config[$uid][$cat] = "!<unset>!";
  35                 }
  36                 dba::close($pconfigs);
  37         }
  38
  39         public function get($uid, $cat, $k, $default_value = null, $refresh = false)
  40         {
  41                 $a = self::getApp();
  42
  43                 if (!$refresh) {
  44                         // Looking if the whole family isn't set
  45                         if (isset($a->config[$uid][$cat])) {
  46                                 if ($a->config[$uid][$cat] === '!<unset>!') {
  47                                         return $default_value;
  48                                 }
  49                         }
  50
  51                         if (isset($a->config[$uid][$cat][$k])) {
  52                                 if ($a->config[$uid][$cat][$k] === '!<unset>!') {
  53                                         return $default_value;
  54                                 }
  55                                 return $a->config[$uid][$cat][$k];
  56                         }
  57                 }
  58
  59                 $pconfig = dba::selectFirst('pconfig', ['v'], ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
  60                 if (DBM::is_result($pconfig)) {
  61                         $val = (preg_match("|^a:[0-9]+:{.*}$|s", $pconfig['v']) ? unserialize($pconfig['v']) : $pconfig['v']);
  62                         $a->config[$uid][$cat][$k] = $val;
  63                         $this->in_db[$uid][$cat][$k] = true;
  64
  65                         return $val;
  66                 } else {
  67                         $a->config[$uid][$cat][$k] = '!<unset>!';
  68                         $this->in_db[$uid][$cat][$k] = false;
  69
  70                         return $default_value;
  71                 }
  72         }
  73
  74         public function set($uid, $cat, $k, $value)
  75         {
  76                 $a = self::getApp();
  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                 $a->config[$uid][$cat][$k] = $dbvalue;
  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                         return $value;
  99                 }
 100
 101                 return $result;
 102         }
 103
 104         public function delete($uid, $cat, $k)
 105         {
 106                 $a = self::getApp();
 107
 108                 if (!empty($a->config[$uid][$cat][$k])) {
 109                         unset($a->config[$uid][$cat][$k]);
 110                         unset($this->in_db[$uid][$cat][$k]);
 111                 }
 112
 113                 $result = dba::delete('pconfig', ['uid' => $uid, 'cat' => $cat, 'k' => $k]);
 114
 115                 return $result;
 116         }
 117 }