MediaWiki  1.23.2
UserCache.php
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1 <?php
27 class UserCache {
28  protected $cache = array(); // (uid => property => value)
29  protected $typesCached = array(); // (uid => cache type => 1)
30 
34  public static function singleton() {
35  static $instance = null;
36  if ( $instance === null ) {
37  $instance = new self();
38  }
39 
40  return $instance;
41  }
42 
43  protected function __construct() {
44  }
45 
53  public function getProp( $userId, $prop ) {
54  if ( !isset( $this->cache[$userId][$prop] ) ) {
55  wfDebug( __METHOD__ . ": querying DB for prop '$prop' for user ID '$userId'.\n" );
56  $this->doQuery( array( $userId ) ); // cache miss
57  }
58 
59  return isset( $this->cache[$userId][$prop] )
60  ? $this->cache[$userId][$prop]
61  : false; // user does not exist?
62  }
63 
72  public function getUserName( $userId, $ip ) {
73  return $userId > 0 ? $this->getProp( $userId, 'name' ) : $ip;
74  }
75 
82  public function doQuery( array $userIds, $options = array(), $caller = '' ) {
83  wfProfileIn( __METHOD__ );
84 
85  $usersToCheck = array();
86  $usersToQuery = array();
87 
88  $userIds = array_unique( $userIds );
89 
90  foreach ( $userIds as $userId ) {
91  $userId = (int)$userId;
92  if ( $userId <= 0 ) {
93  continue; // skip anons
94  }
95  if ( isset( $this->cache[$userId]['name'] ) ) {
96  $usersToCheck[$userId] = $this->cache[$userId]['name']; // already have name
97  } else {
98  $usersToQuery[] = $userId; // we need to get the name
99  }
100  }
101 
102  // Lookup basic info for users not yet loaded...
103  if ( count( $usersToQuery ) ) {
104  $dbr = wfGetDB( DB_SLAVE );
105  $table = array( 'user' );
106  $conds = array( 'user_id' => $usersToQuery );
107  $fields = array( 'user_name', 'user_real_name', 'user_registration', 'user_id' );
108 
109  $comment = __METHOD__;
110  if ( strval( $caller ) !== '' ) {
111  $comment .= "/$caller";
112  }
113 
114  $res = $dbr->select( $table, $fields, $conds, $comment );
115  foreach ( $res as $row ) { // load each user into cache
116  $userId = (int)$row->user_id;
117  $this->cache[$userId]['name'] = $row->user_name;
118  $this->cache[$userId]['real_name'] = $row->user_real_name;
119  $this->cache[$userId]['registration'] = $row->user_registration;
120  $usersToCheck[$userId] = $row->user_name;
121  }
122  }
123 
124  $lb = new LinkBatch();
125  foreach ( $usersToCheck as $userId => $name ) {
126  if ( $this->queryNeeded( $userId, 'userpage', $options ) ) {
127  $lb->add( NS_USER, str_replace( ' ', '_', $row->user_name ) );
128  $this->typesCached[$userId]['userpage'] = 1;
129  }
130  if ( $this->queryNeeded( $userId, 'usertalk', $options ) ) {
131  $lb->add( NS_USER_TALK, str_replace( ' ', '_', $row->user_name ) );
132  $this->typesCached[$userId]['usertalk'] = 1;
133  }
134  }
135  $lb->execute();
136 
137  wfProfileOut( __METHOD__ );
138  }
139 
148  protected function queryNeeded( $uid, $type, array $options ) {
149  return ( in_array( $type, $options ) && !isset( $this->typesCached[$uid][$type] ) );
150  }
151 }
php
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Definition: skin.txt:62
LinkBatch
Class representing a list of titles The execute() method checks them all for existence and adds them ...
Definition: LinkBatch.php:30
UserCache
Definition: UserCache.php:27
UserCache\queryNeeded
queryNeeded( $uid, $type, array $options)
Check if a cache type is in $options and was not loaded for this user.
Definition: UserCache.php:148
wfGetDB
& wfGetDB( $db, $groups=array(), $wiki=false)
Get a Database object.
Definition: GlobalFunctions.php:3650
wfProfileIn
wfProfileIn( $functionname)
Begin profiling of a function.
Definition: Profiler.php:33
cache
you have access to all of the normal MediaWiki so you can get a DB use the cache
Definition: maintenance.txt:52
UserCache\__construct
__construct()
Definition: UserCache.php:43
$dbr
$dbr
Definition: testCompression.php:48
$lb
if( $wgAPIRequestLog) $lb
Definition: api.php:126
UserCache\getProp
getProp( $userId, $prop)
Get a property of a user based on their user ID.
Definition: UserCache.php:53
UserCache\$typesCached
$typesCached
Definition: UserCache.php:29
wfProfileOut
wfProfileOut( $functionname='missing')
Stop profiling of a function.
Definition: Profiler.php:46
array
the array() calling protocol came about after MediaWiki 1.4rc1.
List of Api Query prop modules.
$comment
$comment
Definition: importImages.php:107
$options
null means default in associative array with keys and values unescaped Should be merged with default with a value of false meaning to suppress the attribute in associative array with keys and values unescaped & $options
Definition: hooks.txt:1530
wfDebug
wfDebug( $text, $dest='all')
Sends a line to the debug log if enabled or, optionally, to a comment in output.
Definition: GlobalFunctions.php:933
NS_USER_TALK
const NS_USER_TALK
Definition: Defines.php:82
$name
Allows to change the fields on the form that will be generated $name
Definition: hooks.txt:336
UserCache\getUserName
getUserName( $userId, $ip)
Get the name of a user or return $ip if the user ID is 0.
Definition: UserCache.php:72
UserCache\doQuery
doQuery(array $userIds, $options=array(), $caller='')
Preloads user names for given list of users.
Definition: UserCache.php:82
UserCache\$cache
$cache
Definition: UserCache.php:28
DB_SLAVE
const DB_SLAVE
Definition: Defines.php:55
as
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Definition: distributors.txt:9
UserCache\singleton
static singleton()
Definition: UserCache.php:34
NS_USER
const NS_USER
Definition: Defines.php:81
$res
$res
Definition: database.txt:21
$type
$type
Definition: testCompression.php:46