81 if ( self::$instance ===
null ) {
82 self::$instance =
new self();
91 public function queue( $path ) {
95 if ( $mtime ===
false ) {
96 if ( file_exists(
$path ) ) {
97 $mtime = filemtime(
$path );
99 throw new Exception(
"$path does not exist!" );
102 if ( $mtime ===
false ) {
103 $err = error_get_last();
104 throw new Exception(
"Couldn't stat $path: {$err['message']}" );
107 $this->queued[
$path] = $mtime;
116 if ( !$this->queued ) {
120 if ( $this->finished ) {
122 "The following paths tried to load late: "
123 . implode(
', ', array_keys( $this->queued ) )
136 $cache = MediaWikiServices::getInstance()->getLocalServerObjectCache();
143 md5( json_encode( $this->queued + $versions ) )
145 $data =
$cache->get( $key );
153 $data[
'globals'][
'wgAutoloadClasses'] += $data[
'autoload'];
154 unset( $data[
'autoload'] );
157 $cache->set( $key, $data, 60 * 60 * 24 );
187 $this->finished =
true;
199 $autoloadClasses = [];
200 $autoloaderPaths = [];
203 $extDependencies = [];
207 $json = file_get_contents(
$path );
208 if ( $json ===
false ) {
209 throw new Exception(
"Unable to read $path, does it exist?" );
211 $info = json_decode( $json,
true );
212 if ( !is_array( $info ) ) {
213 throw new Exception(
"$path is not a valid JSON file." );
216 if ( !isset( $info[
'manifest_version'] ) ) {
218 "{$info['name']}'s extension.json or skin.json does not have manifest_version",
223 $info[
'manifest_version'] = 1;
225 $version = $info[
'manifest_version'];
226 if ( $version < self::OLDEST_MANIFEST_VERSION || $version > self::MANIFEST_VERSION ) {
227 $incompatible[] =
"$path: unsupported manifest_version: {$version}";
232 $GLOBALS[
'wgAutoloadClasses'] += $autoload;
233 $autoloadClasses += $autoload;
236 $requires = $processor->getRequirements( $info );
239 if ( is_array( $requires ) && $requires && isset( $info[
'name'] ) ) {
240 $extDependencies[$info[
'name']] = $requires;
244 $autoloaderPaths = array_merge( $autoloaderPaths,
245 $processor->getExtraAutoloaderPaths( dirname(
$path ), $info ) );
247 $processor->extractInfo(
$path, $info, $version );
249 $data = $processor->getExtractedInfo();
250 $data[
'warnings'] = $warnings;
253 $incompatible = array_merge(
256 ->setLoadedExtensionsAndSkins( $data[
'credits'] )
257 ->checkArray( $extDependencies )
260 if ( $incompatible ) {
261 if ( count( $incompatible ) === 1 ) {
262 throw new Exception( $incompatible[0] );
264 throw new Exception( implode(
"\n", $incompatible ) );
269 $data[
'globals'][
'wgAutoloadClasses'] = [];
270 $data[
'autoload'] = $autoloadClasses;
271 $data[
'autoloaderPaths'] = $autoloaderPaths;
276 foreach ( $info[
'globals']
as $key => $val ) {
279 if ( is_array( $val ) && isset( $val[self::MERGE_STRATEGY] ) ) {
281 unset( $val[self::MERGE_STRATEGY] );
283 $mergeStrategy =
'array_merge';
293 if ( !is_array(
$GLOBALS[$key] ) || !is_array( $val ) ) {
298 switch ( $mergeStrategy ) {
299 case 'array_merge_recursive':
302 case 'array_replace_recursive':
305 case 'array_plus_2d':
315 throw new UnexpectedValueException(
"Unknown merge strategy '$mergeStrategy'" );
319 foreach ( $info[
'defines']
as $name => $val ) {
320 define(
$name, $val );
322 foreach ( $info[
'autoloaderPaths']
as $path ) {
326 $this->loaded += $info[
'credits'];
327 if ( $info[
'attributes'] ) {
328 if ( !$this->attributes ) {
329 $this->attributes = $info[
'attributes'];
331 $this->attributes = array_merge_recursive( $this->attributes, $info[
'attributes'] );
335 foreach ( $info[
'callbacks']
as $name => $cb ) {
336 if ( !is_callable( $cb ) ) {
337 if ( is_array( $cb ) ) {
338 $cb =
'[ ' . implode(
', ', $cb ) .
' ]';
340 throw new UnexpectedValueException(
"callback '$cb' is not callable" );
342 call_user_func( $cb, $info[
'credits'][
$name] );
354 public function load( $path ) {
366 return isset( $this->loaded[
$name] );
374 if ( isset( $this->attributes[
$name] ) ) {
375 return $this->attributes[
$name];
397 $this->loaded[
$name] = $credits;
408 if ( isset( $info[
'AutoloadClasses'] ) ) {
410 return array_map(
function ( $file )
use ( $dir ) {
412 }, $info[
'AutoloadClasses'] );
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for use
int bool $wgExtensionInfoMTime
When loading extensions through the extension registration system, this can be used to invalidate the...
$wgVersion
MediaWiki version number.
$wgDevelopmentWarnings
If set to true MediaWiki will throw notices for some possible error conditions and for deprecated fun...
wfArrayPlus2d(array $baseArray, array $newValues)
Merges two (possibly) 2 dimensional arrays into the target array ($baseArray).
wfDeprecated( $function, $version=false, $component=false, $callerOffset=2)
Throws a warning that $function is deprecated.
A BagOStuff object with no objects in it.
isLoaded( $name)
Whether a thing has been loaded.
array $queued
List of paths that should be loaded.
const MERGE_STRATEGY
Special key that defines the merge strategy.
getQueue()
Get the current load queue.
const MANIFEST_VERSION
Version of the highest supported manifest version.
processAutoLoader( $dir, array $info)
Register classes with the autoloader.
const OLDEST_MANIFEST_VERSION
Version of the oldest supported manifest version.
array $loaded
Array of loaded things, keyed by name, values are credits information.
const CACHE_VERSION
Bump whenever the registration cache needs resetting.
clearQueue()
Clear the current load queue.
static ExtensionRegistry $instance
load( $path)
Loads and processes the given JSON file without delay.
const MEDIAWIKI_CORE
"requires" key that applies to MediaWiki core/$wgVersion
readFromQueue(array $queue)
Process a queue of extensions and return their extracted data.
exportExtractedData(array $info)
bool $finished
Whether we are done loading things.
getAllThings()
Get information about all things.
finish()
After this is called, no more extensions can be loaded.
array $attributes
Items in the JSON file that aren't being set as globals.
markLoaded( $name, array $credits)
Mark a thing as loaded.
Provides functions to check a set of extensions with dependencies against a set of loaded extensions ...
when a variable name is used in a it is silently declared as a new local masking the global
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
the array() calling protocol came about after MediaWiki 1.4rc1.
Allows to change the fields on the form that will be generated $name
returning false will NOT prevent logging $e
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php