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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch; |
| 4 | |
| 5 | use CirrusSearch\Fallbacks\FallbackRunner; |
| 6 | use CirrusSearch\Parser\BasicQueryClassifier; |
| 7 | use CirrusSearch\Parser\NamespacePrefixParser; |
| 8 | use CirrusSearch\Search\CrossProjectBlockScorerFactory; |
| 9 | use CirrusSearch\Search\FullTextResultsType; |
| 10 | use CirrusSearch\Search\MSearchRequests; |
| 11 | use CirrusSearch\Search\SearchContext; |
| 12 | use CirrusSearch\Search\SearchQuery; |
| 13 | use CirrusSearch\Search\SearchQueryBuilder; |
| 14 | use CirrusSearch\Search\TitleHelper; |
| 15 | use MediaWiki\MediaWikiServices; |
| 16 | use MediaWiki\Status\Status; |
| 17 | use MediaWiki\User\User; |
| 18 | |
| 19 | /** |
| 20 | * Performs searches using Elasticsearch -- on interwikis! |
| 21 | * |
| 22 | * This program is free software; you can redistribute it and/or modify |
| 23 | * it under the terms of the GNU General Public License as published by |
| 24 | * the Free Software Foundation; either version 2 of the License, or |
| 25 | * (at your option) any later version. |
| 26 | * |
| 27 | * This program is distributed in the hope that it will be useful, |
| 28 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 29 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 30 | * GNU General Public License for more details. |
| 31 | * |
| 32 | * You should have received a copy of the GNU General Public License along |
| 33 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 34 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 35 | * http://www.gnu.org/copyleft/gpl.html |
| 36 | */ |
| 37 | class InterwikiSearcher extends Searcher { |
| 38 | |
| 39 | /** |
| 40 | * @param Connection $connection |
| 41 | * @param SearchConfig $config |
| 42 | * @param int[]|null $namespaces Namespace numbers to search, or null for all of them |
| 43 | * @param User|null $user |
| 44 | * @param CirrusDebugOptions|null $debugOptions |
| 45 | * @param NamespacePrefixParser|null $namespacePrefixParser |
| 46 | * @param InterwikiResolver|null $interwikiResolver |
| 47 | * @param TitleHelper|null $titleHelper |
| 48 | * @param CirrusSearchHookRunner|null $cirrusSearchHookRunner |
| 49 | */ |
| 50 | public function __construct( |
| 51 | Connection $connection, |
| 52 | SearchConfig $config, |
| 53 | array $namespaces = null, |
| 54 | User $user = null, |
| 55 | CirrusDebugOptions $debugOptions = null, |
| 56 | NamespacePrefixParser $namespacePrefixParser = null, |
| 57 | InterwikiResolver $interwikiResolver = null, |
| 58 | TitleHelper $titleHelper = null, |
| 59 | CirrusSearchHookRunner $cirrusSearchHookRunner = null |
| 60 | ) { |
| 61 | $maxResults = $config->get( 'CirrusSearchNumCrossProjectSearchResults' ); |
| 62 | parent::__construct( $connection, 0, $maxResults, $config, $namespaces, $user, false, |
| 63 | $debugOptions, $namespacePrefixParser, $interwikiResolver, $titleHelper, $cirrusSearchHookRunner ); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Fetch search results, from caches, if there's any |
| 68 | * @param SearchQuery $query original search query |
| 69 | * @return Status |
| 70 | */ |
| 71 | public function getInterwikiResults( SearchQuery $query ): Status { |
| 72 | $sources = MediaWikiServices::getInstance() |
| 73 | ->getService( InterwikiResolver::SERVICE ) |
| 74 | ->getSisterProjectConfigs(); |
| 75 | if ( !$sources ) { |
| 76 | // Nothing to search for |
| 77 | return Status::newGood( [] ); |
| 78 | } |
| 79 | |
| 80 | $iwQueries = []; |
| 81 | foreach ( $sources as $interwiki => $config ) { |
| 82 | $iwQueries[$interwiki] = SearchQueryBuilder::forCrossProjectSearch( $config, $query ) |
| 83 | ->build(); |
| 84 | } |
| 85 | |
| 86 | $blockScorer = CrossProjectBlockScorerFactory::load( $this->config ); |
| 87 | $msearches = new MSearchRequests(); |
| 88 | foreach ( $iwQueries as $interwiki => $iwQuery ) { |
| 89 | $context = SearchContext::fromSearchQuery( $iwQuery, |
| 90 | FallbackRunner::create( $iwQuery, $this->interwikiResolver ), $this->cirrusSearchHookRunner ); |
| 91 | $this->searchContext = $context; |
| 92 | $this->setResultsType( new FullTextResultsType( |
| 93 | $this->searchContext->getFetchPhaseBuilder(), |
| 94 | $query->getParsedQuery()->isQueryOfClass( BasicQueryClassifier::COMPLEX_QUERY ), |
| 95 | $this->titleHelper, [], $this->searchContext->getConfig()->getElement( 'CirrusSearchDeduplicateInMemory' ) === true ) ); |
| 96 | $this->config = $context->getConfig(); |
| 97 | $this->limit = $iwQuery->getLimit(); |
| 98 | $this->offset = $iwQuery->getOffset(); |
| 99 | $this->buildFullTextSearch( $query->getParsedQuery()->getQueryWithoutNsHeader() ); |
| 100 | $this->indexBaseName = $context->getConfig()->get( 'CirrusSearchIndexBaseName' ); |
| 101 | $search = $this->buildSearch(); |
| 102 | if ( $this->searchContext->areResultsPossible() ) { |
| 103 | $msearches->addRequest( $interwiki, $search ); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | $searchDescription = "{$this->searchContext->getSearchType()} search for '{$this->searchContext->getOriginalSearchTerm()}'"; |
| 108 | if ( $this->searchContext->getDebugOptions()->isCirrusDumpQuery() ) { |
| 109 | return $msearches->dumpQuery( $searchDescription ); |
| 110 | } |
| 111 | $mresponses = $this->searchMulti( $msearches ); |
| 112 | if ( $mresponses->hasFailure() ) { |
| 113 | return $mresponses->getFailure(); |
| 114 | } |
| 115 | |
| 116 | if ( $this->searchContext->getDebugOptions()->isReturnRaw() ) { |
| 117 | return $mresponses->dumpResults( $searchDescription ); |
| 118 | } |
| 119 | |
| 120 | return $mresponses->transformAndGetMulti( $this->searchContext->getResultsType(), array_keys( $iwQueries ), |
| 121 | static function ( array $v ) use ( $blockScorer ) { |
| 122 | return $blockScorer->reorder( $v ); |
| 123 | } ); |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * @return string The stats key used for reporting hit/miss rates of the |
| 128 | * application side query cache. |
| 129 | */ |
| 130 | protected function getQueryCacheStatsKey() { |
| 131 | return 'CirrusSearch.query_cache.interwiki'; |
| 132 | } |
| 133 | } |