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| 1 | <?php |
| 2 | |
| 3 | namespace GeoData; |
| 4 | |
| 5 | use CirrusSearch\ElasticsearchIntermediary; |
| 6 | use CirrusSearch\Search\SearchContext; |
| 7 | use CirrusSearch\SearchConfig; |
| 8 | use CirrusSearch\SearchRequestLog; |
| 9 | use ConfigException; |
| 10 | use Elastica\Exception\ExceptionInterface; |
| 11 | use Elastica\Exception\ResponseException; |
| 12 | use Elastica\Search; |
| 13 | use MediaWiki\MediaWikiServices; |
| 14 | use MediaWiki\User\UserIdentity; |
| 15 | use MediaWiki\WikiMap\WikiMap; |
| 16 | use StatusValue; |
| 17 | |
| 18 | /** |
| 19 | * Performs ES searches via CirrusSearch infrastructure |
| 20 | */ |
| 21 | class Searcher extends ElasticsearchIntermediary { |
| 22 | |
| 23 | /** @var SearchConfig */ |
| 24 | private $config; |
| 25 | |
| 26 | /** |
| 27 | * @param UserIdentity|null $user |
| 28 | * @throws ConfigException |
| 29 | */ |
| 30 | public function __construct( UserIdentity $user = null ) { |
| 31 | /** @var SearchConfig $config */ |
| 32 | $config = MediaWikiServices::getInstance()->getConfigFactory()->makeConfig( 'CirrusSearch' ); |
| 33 | '@phan-var SearchConfig $config'; |
| 34 | $this->config = $config; |
| 35 | $connection = new \CirrusSearch\Connection( $config ); |
| 36 | |
| 37 | parent::__construct( $connection, $user, 0 ); |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * Perform search |
| 42 | * |
| 43 | * @param \Elastica\Query $query |
| 44 | * @param int[] $namespaces Namespaces used |
| 45 | * @param string $queryType Query description for logging |
| 46 | * @return \StatusValue Holds a \Elastica\ResultSet |
| 47 | * @throws ExceptionInterface |
| 48 | */ |
| 49 | public function performSearch( \Elastica\Query $query, array $namespaces, string $queryType ): StatusValue { |
| 50 | $indexSuffix = $this->connection->pickIndexSuffixForNamespaces( $namespaces ); |
| 51 | $index = $this->connection->getIndex( WikiMap::getCurrentWikiId(), $indexSuffix ); |
| 52 | $search = $index->createSearch( $query ); |
| 53 | |
| 54 | $this->connection->setTimeout( $this->getClientTimeout( $queryType ) ); |
| 55 | $search->setOption( Search::OPTION_TIMEOUT, $this->getTimeout( $queryType ) ); |
| 56 | |
| 57 | try { |
| 58 | $log = $this->newLog( 'performing {queryType}', $queryType, [], $namespaces ); |
| 59 | $this->start( $log ); |
| 60 | $result = $search->search(); |
| 61 | if ( !$result->getResponse()->isOk() ) { |
| 62 | $req = $this->connection->getClient()->getLastRequest(); |
| 63 | // Not really the right exception, this is probably a status code problem. |
| 64 | // @phan-suppress-next-line PhanTypeMismatchArgumentNullable |
| 65 | throw new ResponseException( $req, $result->getResponse() ); |
| 66 | } |
| 67 | $this->success(); |
| 68 | } catch ( ExceptionInterface $ex ) { |
| 69 | return $this->failure( $ex ); |
| 70 | } |
| 71 | |
| 72 | $status = StatusValue::newGood( $result ); |
| 73 | if ( $result->getResponse()->getData()['timed_out'] ?? false ) { |
| 74 | // only partial results returned |
| 75 | $status->warning( 'geodata-search-timeout' ); |
| 76 | } |
| 77 | return $status; |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * @param string $description |
| 82 | * @param string $queryType |
| 83 | * @param string[] $extra |
| 84 | * @param array|null $namespaces |
| 85 | * @return SearchRequestLog |
| 86 | */ |
| 87 | protected function newLog( |
| 88 | $description, |
| 89 | $queryType, |
| 90 | array $extra = [], |
| 91 | array $namespaces = null |
| 92 | ): SearchRequestLog { |
| 93 | return new SearchRequestLog( |
| 94 | $this->connection->getClient(), |
| 95 | $description, |
| 96 | $queryType, |
| 97 | $extra, |
| 98 | $namespaces |
| 99 | ); |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * @param int[] $namespaces |
| 104 | * @return array[] Rescore configurations as used by elasticsearch. |
| 105 | */ |
| 106 | public function getRelevanceRescoreConfigurations( array $namespaces ): array { |
| 107 | $searchContext = new SearchContext( $this->config, $namespaces ); |
| 108 | return $searchContext->getRescore(); |
| 109 | } |
| 110 | } |