29use Psr\Log\LoggerInterface;
44 private LoggerInterface $logger;
52 LoggerInterface $logger
54 $this->dbProvider = $dbProvider;
55 $this->pageLookup = $pageLookup;
56 $this->titleParser = $titleParser;
57 $this->repoGroup = $repoGroup;
58 $this->logger = $logger;
64 $cacheKey = self::makeCacheKey( $page );
65 $cachedValue = $this->procCache->get( $cacheKey );
66 if ( $cachedValue !==
null ) {
67 return $cachedValue ?:
null;
72 $file = $this->repoGroup->findFile( $page );
73 if ( $file && !$file->isLocal() ) {
74 $from = $file->getRedirected();
75 $to = $file->getName();
76 if ( $from ===
null || $from === $to ) {
77 $this->procCache->set( $cacheKey,
false );
81 $target =
new TitleValue(
NS_FILE, $to );
82 $this->procCache->set( $cacheKey, $target );
87 $page = $this->pageLookup->getPageByReference( $page );
88 if ( $page ===
null || !$page->isRedirect() ) {
89 $this->procCache->set( $cacheKey,
false );
93 $dbr = $this->dbProvider->getReplicaDatabase();
94 $row = $dbr->newSelectQueryBuilder()
95 ->select( [
'rd_namespace',
'rd_title',
'rd_fragment',
'rd_interwiki' ] )
97 ->where( [
'rd_from' => $page->
getId() ] )
98 ->caller( __METHOD__ )
103 'Found inconsistent redirect status; probably the page was deleted after it was loaded'
105 $this->procCache->set( $cacheKey,
false );
109 $target = $this->createRedirectTarget(
116 $this->procCache->set( $cacheKey, $target );
133 ?
bool $lastRevWasRedirect =
null
138 $isRedirect = $target !==
null;
139 $cacheKey = self::makeCacheKey( $page );
141 if ( !$isRedirect && $lastRevWasRedirect ===
false ) {
142 $this->procCache->set( $cacheKey,
false );
147 $rt = Title::newFromLinkTarget( $target );
148 if ( !$rt->isValidRedirectTarget() ) {
150 $this->procCache->set( $cacheKey,
false );
154 $dbw = $this->dbProvider->getPrimaryDatabase();
155 $dbw->startAtomic( __METHOD__ );
157 $truncatedFragment = self::truncateFragment( $rt->getFragment() );
158 $dbw->newInsertQueryBuilder()
159 ->insertInto(
'redirect' )
161 'rd_from' => $page->
getId(),
162 'rd_namespace' => $rt->getNamespace(),
163 'rd_title' => $rt->getDBkey(),
164 'rd_fragment' => $truncatedFragment,
165 'rd_interwiki' => $rt->getInterwiki(),
167 ->onDuplicateKeyUpdate()
168 ->uniqueIndexFields( [
'rd_from' ] )
170 'rd_namespace' => $rt->getNamespace(),
171 'rd_title' => $rt->getDBkey(),
172 'rd_fragment' => $truncatedFragment,
173 'rd_interwiki' => $rt->getInterwiki(),
175 ->caller( __METHOD__ )
178 $dbw->endAtomic( __METHOD__ );
180 $this->procCache->set(
182 $this->createRedirectTarget(
190 $dbw = $this->dbProvider->getPrimaryDatabase();
192 $dbw->newDeleteQueryBuilder()
193 ->deleteFrom(
'redirect' )
194 ->where( [
'rd_from' => $page->
getId() ] )
195 ->caller( __METHOD__ )
198 $this->procCache->set( $cacheKey,
false );
202 $this->repoGroup->getLocalRepo()->invalidateImageRedirect( $page );
215 $this->procCache->clear( self::makeCacheKey( $page ) );
223 private static function makeCacheKey( $page ) {
224 return "{$page->getNamespace()}:{$page->getDBkey()}";
237 private function createRedirectTarget( $namespace, $title, $fragment, $interwiki ): ?LinkTarget {
247 $fragment = self::truncateFragment( $fragment );
253 $target = $this->titleParser->makeTitleValueSafe( $namespace, $title, $fragment, $interwiki );
254 if ( $target !==
null && Title::newFromLinkTarget( $target )->isValidRedirectTarget() ) {
267 private static function truncateFragment( $fragment ) {
268 return mb_strcut( $fragment, 0, 255 );
if(!defined('MW_SETUP_CALLBACK'))
Service for storing and retrieving page redirect information.
clearCache( $page)
Clear process-cached redirect information for a page.
updateRedirectTarget(PageIdentity $page, ?LinkTarget $target, ?bool $lastRevWasRedirect=null)
Update the redirect target for a page.
getRedirectTarget(PageIdentity $page)
Get the redirect destination.
__construct(IConnectionProvider $dbProvider, PageLookup $pageLookup, TitleParser $titleParser, RepoGroup $repoGroup, LoggerInterface $logger)
Interface for objects (potentially) representing an editable wiki page.
getId( $wikiId=self::LOCAL)
Returns the page ID.
Service for looking up information about wiki pages.
Service for resolving a wiki page redirect.