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| 1 | <?php |
| 2 | |
| 3 | use MediaWiki\Logger\LoggerFactory; |
| 4 | use MediaWiki\MediaWikiServices; |
| 5 | |
| 6 | /** |
| 7 | * MediaWiki MathSearch extension |
| 8 | * |
| 9 | * (c) 2014 Moritz Schubotz |
| 10 | * GPLv2 license; info in main package. |
| 11 | * |
| 12 | * @file |
| 13 | * @ingroup extensions |
| 14 | */ |
| 15 | abstract class MathEngineRest { |
| 16 | /** @var MathQueryObject the query to be answered */ |
| 17 | protected $query; |
| 18 | /** @var string */ |
| 19 | protected $type = "mws"; |
| 20 | /** @var int|false */ |
| 21 | protected $size = false; |
| 22 | /** @var array[][][] */ |
| 23 | protected $resultSet = []; |
| 24 | /** @var int[] */ |
| 25 | protected $relevanceMap = []; |
| 26 | /** @var string */ |
| 27 | protected $backendUrl = "http://localhost:9090"; |
| 28 | |
| 29 | protected static function doPost( $url, $postData ) { |
| 30 | $res = MediaWikiServices::getInstance()->getHttpRequestFactory() |
| 31 | ->post( $url, [ "postData" => $postData, "timeout" => 60 ] ); |
| 32 | if ( $res === false ) { |
| 33 | if ( function_exists( 'curl_init' ) ) { |
| 34 | $handle = curl_init(); |
| 35 | $options = [ |
| 36 | CURLOPT_URL => $url, |
| 37 | CURLOPT_CUSTOMREQUEST => 'POST', // GET POST PUT PATCH DELETE HEAD OPTIONS |
| 38 | ]; |
| 39 | // TODO: Figure out how not to write the error in a message and not in top of the output page |
| 40 | curl_setopt_array( $handle, $options ); |
| 41 | $details = curl_exec( $handle ); |
| 42 | } else { |
| 43 | $details = "curl is not installed."; |
| 44 | } |
| 45 | LoggerFactory::getInstance( |
| 46 | 'MathSearch' |
| 47 | )->error( 'Nothing retrieved from $url. Check if server is running. Error:' . |
| 48 | var_export( $details, true ) ); |
| 49 | return false; |
| 50 | } else { |
| 51 | return $res; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * @return string |
| 57 | */ |
| 58 | public function getBackendUrl() { |
| 59 | return $this->backendUrl; |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * @param string $backendUrl |
| 64 | */ |
| 65 | public function setBackendUrl( $backendUrl ) { |
| 66 | $this->backendUrl = $backendUrl; |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * @return MathQueryObject |
| 71 | */ |
| 72 | public function getQuery() { |
| 73 | return $this->query; |
| 74 | } |
| 75 | |
| 76 | /** |
| 77 | * @param MathQueryObject|null $query |
| 78 | * @param bool|string $url |
| 79 | */ |
| 80 | function __construct( $query = null, $url = false ) { |
| 81 | $this->query = $query; |
| 82 | if ( $url ) { |
| 83 | $this->setBackendUrl( $url ); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * @return int|false |
| 89 | */ |
| 90 | public function getSize() { |
| 91 | return $this->size; |
| 92 | } |
| 93 | |
| 94 | /** |
| 95 | * @return array[][][] |
| 96 | */ |
| 97 | public function getResultSet() { |
| 98 | return $this->resultSet; |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * @return int[] |
| 103 | */ |
| 104 | public function getRelevanceMap() { |
| 105 | return $this->relevanceMap; |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * @param MathQueryObject $query |
| 110 | * @return $this |
| 111 | */ |
| 112 | public function setQuery( MathQueryObject $query ) { |
| 113 | $this->query = $query; |
| 114 | return $this; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Posts the query to mwsd and evaluates the result data |
| 119 | * @return bool |
| 120 | */ |
| 121 | function postQuery() { |
| 122 | $numProcess = 30000; |
| 123 | $postData = $this->getPostData( $numProcess ); |
| 124 | $res = self::doPost( $this->backendUrl, $postData ); |
| 125 | if ( $res === false ) { |
| 126 | return false; |
| 127 | } else { |
| 128 | return $this->processResults( $res, $numProcess ); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * @param SimpleXMLElement $xmlRoot |
| 134 | */ |
| 135 | abstract function processMathResults( $xmlRoot ); |
| 136 | |
| 137 | /** |
| 138 | * @param int $numProcess |
| 139 | * @return mixed|string |
| 140 | */ |
| 141 | protected function getPostData( $numProcess ) { |
| 142 | global $wgMathDebug; |
| 143 | if ( $this->query->getXQuery() ) { |
| 144 | return $this->query->getXQuery(); |
| 145 | } else { |
| 146 | $tmp = |
| 147 | str_replace( "answsize=\"30\"", "answsize=\"$numProcess\" totalreq=\"yes\"", |
| 148 | $this->getQuery()->getCQuery() ); |
| 149 | $postData = str_replace( "m:", "", $tmp ); |
| 150 | if ( $wgMathDebug ) { |
| 151 | LoggerFactory::getInstance( 'MathSearch' )->debug( 'MWS query:' . $postData ); |
| 152 | return $postData; |
| 153 | } |
| 154 | return $postData; |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | /** |
| 159 | * @param string $res |
| 160 | * @param int $numProcess |
| 161 | * @return bool |
| 162 | */ |
| 163 | protected function processResults( $res, $numProcess ) { |
| 164 | try { |
| 165 | $xres = new SimpleXMLElement( $res ); |
| 166 | } catch ( Exception $e ) { |
| 167 | LoggerFactory::getInstance( 'MathSearch' )->error( 'No valid XMLRESUSLT' . $res ); |
| 168 | return false; |
| 169 | } |
| 170 | |
| 171 | $this->size = (int)$xres["total"]; |
| 172 | LoggerFactory::getInstance( |
| 173 | 'MathSearch' |
| 174 | )->warning( $this->size . " results retrieved from $this->backendUrl." ); |
| 175 | if ( $this->size == 0 ) { |
| 176 | return true; |
| 177 | } |
| 178 | $this->relevanceMap = []; |
| 179 | $this->resultSet = []; |
| 180 | $this->processMathResults( $xres ); |
| 181 | if ( $this->size >= $numProcess ) { |
| 182 | ini_set( 'memory_limit', '256M' ); |
| 183 | for ( $i = $numProcess; $i <= $this->size; $i += $numProcess ) { |
| 184 | $query = str_replace( "limitmin=\"0\" ", "limitmin=\"$i\" ", $this->postData ); |
| 185 | $res = MediaWikiServices::getInstance()->getHttpRequestFactory() |
| 186 | ->post( $this->backendUrl, [ "postData" => $query, "timeout" => 60 ] ); |
| 187 | LoggerFactory::getInstance( 'mathsearch' )->debug( 'MWS query:' . $query ); |
| 188 | if ( $res == false ) { |
| 189 | LoggerFactory::getInstance( |
| 190 | 'MathSearch' |
| 191 | )->error( "Nothing retrieved from $this->backendUrl. Check if mwsd is running there" ); |
| 192 | return false; |
| 193 | } |
| 194 | $xres = new SimpleXMLElement( $res ); |
| 195 | $this->processMathResults( $xres ); |
| 196 | } |
| 197 | } |
| 198 | return true; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * @return string |
| 203 | */ |
| 204 | public function getType() { |
| 205 | return $this->type; |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * @param string $type |
| 210 | */ |
| 211 | public function setType( $type ) { |
| 212 | $this->type = $type; |
| 213 | } |
| 214 | |
| 215 | public function resetResults() { |
| 216 | $this->size = false; |
| 217 | $this->resultSet = []; |
| 218 | $this->relevanceMap = []; |
| 219 | } |
| 220 | |
| 221 | } |