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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch; |
| 4 | |
| 5 | use MediaWiki\Extension\SiteMatrix\SiteMatrix; |
| 6 | use MediaWiki\Interwiki\InterwikiLookup; |
| 7 | use MediaWiki\Registration\ExtensionRegistry; |
| 8 | use MediaWiki\WikiMap\WikiMap; |
| 9 | use Wikimedia\Http\MultiHttpClient; |
| 10 | use Wikimedia\ObjectCache\WANObjectCache; |
| 11 | |
| 12 | /** |
| 13 | * InterwikiResolver suited for WMF context and uses SiteMatrix. |
| 14 | */ |
| 15 | class SiteMatrixInterwikiResolver extends BaseInterwikiResolver { |
| 16 | |
| 17 | private const MATRIX_CACHE_TTL = 600; |
| 18 | |
| 19 | public function __construct( |
| 20 | SearchConfig $config, |
| 21 | MultiHttpClient $client, |
| 22 | WANObjectCache $wanCache, |
| 23 | InterwikiLookup $iwLookup |
| 24 | ) { |
| 25 | parent::__construct( $config, $client, $wanCache, $iwLookup ); |
| 26 | if ( $config->getWikiId() !== WikiMap::getCurrentWikiId() ) { |
| 27 | throw new \RuntimeException( "This resolver cannot with an external wiki config. (config: " . |
| 28 | $config->getWikiId() . ", global: " . WikiMap::getCurrentWikiId() ); |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * @param SearchConfig $config |
| 34 | * @param ExtensionRegistry|null $extensionRegistry |
| 35 | * @return bool true if this resolver can run with the specified config |
| 36 | */ |
| 37 | public static function accepts( SearchConfig $config, ?ExtensionRegistry $extensionRegistry = null ) { |
| 38 | $extensionRegistry = $extensionRegistry ?: ExtensionRegistry::getInstance(); |
| 39 | return $config->getWikiId() === WikiMap::getCurrentWikiId() |
| 40 | && $extensionRegistry->isLoaded( 'SiteMatrix' ) |
| 41 | && $config->has( 'SiteMatrixSites' ); |
| 42 | } |
| 43 | |
| 44 | protected function loadMatrix() { |
| 45 | $cacheKey = $this->wanCache->makeKey( 'cirrussearch-interwiki-matrix', 'v1' ); |
| 46 | $matrix = $this->wanCache->getWithSetCallback( |
| 47 | $cacheKey, |
| 48 | self::MATRIX_CACHE_TTL, |
| 49 | $this->siteMatrixLoader() |
| 50 | ); |
| 51 | if ( !is_array( $matrix ) ) { |
| 52 | // Should we log something if we failed? |
| 53 | return []; |
| 54 | } |
| 55 | return $matrix; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * @return callable |
| 60 | */ |
| 61 | private function siteMatrixLoader() { |
| 62 | return function () { |
| 63 | global $wgConf; |
| 64 | |
| 65 | $matrix = new SiteMatrix; |
| 66 | $wikiDBname = $this->config->get( 'DBname' ); |
| 67 | [ , $myLang ] = $wgConf->siteFromDB( $wikiDBname ); |
| 68 | $siteConf = $this->config->get( 'SiteMatrixSites' ); |
| 69 | $prefixOverrides = $this->config->get( 'CirrusSearchInterwikiPrefixOverrides' ); |
| 70 | $sisterProjects = []; |
| 71 | $crossLanguage = []; |
| 72 | $prefixesByWiki = []; |
| 73 | $languageMap = []; |
| 74 | $myProject = null; |
| 75 | |
| 76 | if ( !in_array( $myLang, $matrix->getLangList() ) ) { |
| 77 | return []; |
| 78 | } |
| 79 | |
| 80 | foreach ( $matrix->getSites() as $site ) { |
| 81 | if ( $matrix->getDBName( $myLang, $site ) === $wikiDBname ) { |
| 82 | $myProject = $site; |
| 83 | break; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | if ( $myProject === null ) { |
| 88 | // This is not a "project" |
| 89 | return []; |
| 90 | } |
| 91 | |
| 92 | foreach ( $matrix->getSites() as $site ) { |
| 93 | if ( $site === $myProject ) { |
| 94 | continue; |
| 95 | } |
| 96 | if ( !$matrix->exist( $myLang, $site ) ) { |
| 97 | continue; |
| 98 | } |
| 99 | if ( $matrix->isClosed( $myLang, $site ) ) { |
| 100 | continue; |
| 101 | } |
| 102 | if ( !isset( $siteConf[$site]['prefix'] ) ) { |
| 103 | continue; |
| 104 | } |
| 105 | $dbName = $matrix->getDBName( $myLang, $site ); |
| 106 | $prefix = $siteConf[$site]['prefix']; |
| 107 | |
| 108 | if ( isset( $prefixOverrides[$prefix] ) ) { |
| 109 | $prefix = $prefixOverrides[$prefix]; |
| 110 | } |
| 111 | |
| 112 | if ( !in_array( $prefix, $this->config->get( 'CirrusSearchCrossProjectSearchBlockList' ) ) ) { |
| 113 | $sisterProjects[$prefix] = $dbName; |
| 114 | } |
| 115 | $prefixesByWiki[$dbName] = $prefix; |
| 116 | } |
| 117 | |
| 118 | foreach ( $matrix->getLangList() as $lang ) { |
| 119 | if ( $lang === $myLang ) { |
| 120 | continue; |
| 121 | } |
| 122 | |
| 123 | $dbname = $matrix->getDBName( $lang, $myProject ); |
| 124 | if ( !$matrix->exist( $lang, $myProject ) ) { |
| 125 | continue; |
| 126 | } |
| 127 | if ( $matrix->isClosed( $lang, $myProject ) ) { |
| 128 | continue; |
| 129 | } |
| 130 | // Bold assumption that the interwiki prefix is equal |
| 131 | // to the language. |
| 132 | $iw = $this->interwikiLookup->fetch( $lang ); |
| 133 | // Not a valid interwiki prefix... |
| 134 | if ( !$iw ) { |
| 135 | continue; |
| 136 | } |
| 137 | |
| 138 | $url = $matrix->getCanonicalUrl( $lang, $myProject ); |
| 139 | $iwurl = $iw->getURL(); |
| 140 | if ( strlen( $url ) > strlen( $iwurl ) ) { |
| 141 | continue; |
| 142 | } |
| 143 | if ( substr_compare( $iwurl, $url, 0, strlen( $url ) ) !== 0 ) { |
| 144 | continue; |
| 145 | } |
| 146 | |
| 147 | $crossLanguage[$lang] = $dbname; |
| 148 | // In theory it's impossible to override something here |
| 149 | // should we log something if the case? |
| 150 | $prefixesByWiki[$dbname] = $lang; |
| 151 | $wikiLangCode = $wgConf->get( 'wgLanguageCode', $dbname, $myProject, |
| 152 | [ 'lang' => $lang, 'site' => $myProject ] ); |
| 153 | $languageMap[$wikiLangCode][] = $lang; |
| 154 | } |
| 155 | // Cleanup unambiguous languages |
| 156 | $cleanLanguageMap = []; |
| 157 | foreach ( $languageMap as $lang => $dbprefixes ) { |
| 158 | if ( array_key_exists( $lang, $dbprefixes ) |
| 159 | && ( $dbprefixes === [ $lang ] ) |
| 160 | ) { |
| 161 | continue; |
| 162 | } |
| 163 | // if lang is equals to one of the dbprefixes then |
| 164 | if ( in_array( $lang, $dbprefixes ) ) { |
| 165 | continue; |
| 166 | } |
| 167 | if ( count( $dbprefixes ) > 1 ) { |
| 168 | // TODO: Log this ambiguous entry |
| 169 | } |
| 170 | $cleanLanguageMap[$lang] = reset( $dbprefixes ); |
| 171 | } |
| 172 | return [ |
| 173 | 'sister_projects' => $sisterProjects, |
| 174 | 'language_map' => $cleanLanguageMap, |
| 175 | 'cross_language' => $crossLanguage, |
| 176 | 'prefixes_by_wiki' => $prefixesByWiki, |
| 177 | ]; |
| 178 | }; |
| 179 | } |
| 180 | |
| 181 | } |