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| 1 | <?php |
| 2 | |
| 3 | namespace CirrusSearch\Maintenance; |
| 4 | |
| 5 | use BatchRowIterator; |
| 6 | use CirrusSearch\BuildDocument\BuildDocument; |
| 7 | use CirrusSearch\Iterator\CallbackIterator; |
| 8 | use CirrusSearch\Job; |
| 9 | use CirrusSearch\SearchConfig; |
| 10 | use CirrusSearch\Updater; |
| 11 | use IDBAccessObject; |
| 12 | use MediaWiki\Logger\LoggerFactory; |
| 13 | use MediaWiki\MediaWikiServices; |
| 14 | use MediaWiki\Title\Title; |
| 15 | use MediaWiki\Utils\MWTimestamp; |
| 16 | use MediaWiki\WikiMap\WikiMap; |
| 17 | use Throwable; |
| 18 | use UnexpectedValueException; |
| 19 | use Wikimedia\Rdbms\IDatabase; |
| 20 | use WikiPage; |
| 21 | |
| 22 | /** |
| 23 | * Force reindexing change to the wiki. |
| 24 | * |
| 25 | * This program is free software; you can redistribute it and/or modify |
| 26 | * it under the terms of the GNU General Public License as published by |
| 27 | * the Free Software Foundation; either version 2 of the License, or |
| 28 | * (at your option) any later version. |
| 29 | * |
| 30 | * This program is distributed in the hope that it will be useful, |
| 31 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 32 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 33 | * GNU General Public License for more details. |
| 34 | * |
| 35 | * You should have received a copy of the GNU General Public License along |
| 36 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 37 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 38 | * http://www.gnu.org/copyleft/gpl.html |
| 39 | */ |
| 40 | |
| 41 | $IP = getenv( 'MW_INSTALL_PATH' ); |
| 42 | if ( $IP === false ) { |
| 43 | $IP = __DIR__ . '/../../..'; |
| 44 | } |
| 45 | require_once "$IP/maintenance/Maintenance.php"; |
| 46 | require_once __DIR__ . '/../includes/Maintenance/Maintenance.php'; |
| 47 | |
| 48 | class ForceSearchIndex extends Maintenance { |
| 49 | private const SECONDS_BETWEEN_JOB_QUEUE_LENGTH_CHECKS = 3; |
| 50 | /** @var MWTimestamp|null */ |
| 51 | public $fromDate = null; |
| 52 | /** @var MWTimestamp|null */ |
| 53 | public $toDate = null; |
| 54 | public $toId = null; |
| 55 | public $indexUpdates; |
| 56 | public $archive; |
| 57 | public $limit; |
| 58 | public $queue; |
| 59 | public $maxJobs; |
| 60 | public $pauseForJobs; |
| 61 | public $namespace; |
| 62 | /** @var string[] */ |
| 63 | public $excludeContentTypes; |
| 64 | public $lastJobQueueCheckTime = 0; |
| 65 | |
| 66 | /** |
| 67 | * @var bool true if the script is run with --ids |
| 68 | */ |
| 69 | private $runWithIds; |
| 70 | |
| 71 | /** |
| 72 | * @var int[] list of page ids to reindex when --ids is used |
| 73 | */ |
| 74 | private $pageIds; |
| 75 | |
| 76 | public function __construct() { |
| 77 | parent::__construct(); |
| 78 | $this->addDescription( "Force indexing some pages. Setting --from or --to will switch " |
| 79 | . "from page id based indexing to " |
| 80 | . "date based indexing which uses less efficient queries and follows redirects.\n\n" |
| 81 | . "Note: All froms are _exclusive_ and all tos are _inclusive_.\n" |
| 82 | . "Note 2: Setting fromId and toId use the efficient query so those are ok.\n" |
| 83 | . "Note 3: Operates on all clusters unless --cluster is provided.\n" |
| 84 | ); |
| 85 | $this->setBatchSize( 10 ); |
| 86 | $this->addOption( 'from', 'Start date of reindex in YYYY-mm-ddTHH:mm:ssZ (exc. Defaults ' . |
| 87 | 'to 0 epoch.', false, true ); |
| 88 | $this->addOption( 'to', 'Stop date of reindex in YYYY-mm-ddTHH:mm:ssZ. Defaults to now.', |
| 89 | false, true ); |
| 90 | $this->addOption( 'fromId', 'Start indexing at a specific page_id. ' . |
| 91 | 'Not useful with --deletes.', false, true ); |
| 92 | $this->addOption( 'toId', 'Stop indexing at a specific page_id. ' . |
| 93 | 'Not useful with --deletes or --from or --to.', false, true ); |
| 94 | $this->addOption( 'ids', 'List of page ids (comma separated) to reindex. ' . |
| 95 | 'Not allowed with deletes/from/to/fromId/toId/limit.', false, true ); |
| 96 | $this->addOption( 'deletes', |
| 97 | 'If this is set then just index deletes, not updates or creates.', false ); |
| 98 | $this->addOption( 'archive', |
| 99 | 'Don\'t delete pages, only index them into the archive.', false, false ); |
| 100 | $this->addOption( 'limit', |
| 101 | 'Maximum number of pages to process before exiting the script. Default to unlimited.', |
| 102 | false, true ); |
| 103 | $this->addOption( 'buildChunks', 'Instead of running the script spit out commands that ' . |
| 104 | 'can be farmed out to different processes or machines to rebuild the index. Works ' . |
| 105 | 'with fromId and toId, not from and to. If specified as a number then chunks no ' . |
| 106 | 'larger than that size are spat out. If specified as a number followed by the word ' . |
| 107 | '"total" without a space between them then that many chunks will be spat out sized ' . |
| 108 | 'to cover the entire wiki.', false, true ); |
| 109 | $this->addOption( 'queue', 'Rather than perform the indexes in process add them to the ' . |
| 110 | 'job queue. Ignored for delete.' ); |
| 111 | $this->addOption( 'maxJobs', 'If there are more than this many index jobs in the queue ' . |
| 112 | 'then pause before adding more. This is only checked every ' . |
| 113 | self::SECONDS_BETWEEN_JOB_QUEUE_LENGTH_CHECKS . |
| 114 | ' seconds. Not meaningful without --queue.', false, true ); |
| 115 | $this->addOption( 'pauseForJobs', 'If paused adding jobs then wait for there to be less ' . |
| 116 | 'than this many before starting again. Defaults to the value specified for ' . |
| 117 | '--maxJobs. Not meaningful without --queue.', false, true ); |
| 118 | $this->addOption( 'indexOnSkip', 'When skipping either parsing or links send the document' . |
| 119 | ' as an index. This replaces the contents of the index for that entry with the entry' . |
| 120 | ' built from a skipped process. Without this if the entry does not exist then it will' . |
| 121 | ' be skipped entirely. Only set this when running the first pass of building the' . |
| 122 | ' index. Otherwise, don\'t tempt fate by indexing half complete documents.' ); |
| 123 | $this->addOption( 'forceParse', '(deprecated)' ); |
| 124 | $this->addOption( 'skipParse', |
| 125 | 'Skip parsing the page. This is really only good for running the second half ' . |
| 126 | 'of the two phase index build. If this is specified then the default batch size ' . |
| 127 | 'is actually 50.' ); |
| 128 | $this->addOption( 'skipLinks', |
| 129 | 'Skip looking for links to the page (counting and finding redirects). Use ' . |
| 130 | 'this with --indexOnSkip for the first half of the two phase index build.' ); |
| 131 | $this->addOption( 'namespace', 'Only index pages in this given namespace', false, true ); |
| 132 | $this->addOption( 'excludeContentTypes', 'Exclude pages of the specified content types. ' . |
| 133 | 'These must be a comma separated list of strings such as "wikitext" or "json" ' . |
| 134 | 'matching the CONTENT_MODEL_* constants.', false, true, false ); |
| 135 | $this->addOption( 'useDbIndex', |
| 136 | 'Use specific index when fetching IDs from the database.', false, true, false ); |
| 137 | } |
| 138 | |
| 139 | public function execute() { |
| 140 | $this->disablePoolCountersAndLogging(); |
| 141 | $wiki = sprintf( "[%20s]", WikiMap::getCurrentWikiId() ); |
| 142 | |
| 143 | // Make sure we've actually got indices to populate |
| 144 | if ( !$this->simpleCheckIndexes() ) { |
| 145 | $this->fatalError( |
| 146 | "$wiki index(es) do not exist. Did you forget to run updateSearchIndexConfig?" |
| 147 | ); |
| 148 | } |
| 149 | |
| 150 | $this->indexUpdates = !$this->getOption( 'deletes', false ); |
| 151 | // We need to check ids options early otherwise hasOption may return |
| 152 | // true even if the user did not set the option on the commandline |
| 153 | if ( $this->hasOption( 'ids' ) ) { |
| 154 | $this->runWithIds = true; |
| 155 | $this->pageIds = $this->buildPageIdBatches(); |
| 156 | } |
| 157 | |
| 158 | if ( $this->getOption( 'from' ) !== null || $this->getOption( 'to' ) !== null ) { |
| 159 | // 0 is falsy so MWTimestamp makes that `now`. '00' is epoch 0. |
| 160 | $this->fromDate = new MWTimestamp( $this->getOption( 'from', '00' ) ); |
| 161 | $this->toDate = new MWTimestamp( $this->getOption( 'to', false ) ); |
| 162 | } |
| 163 | $this->toId = $this->getOption( 'toId' ); |
| 164 | $this->archive = (bool)$this->getOption( 'archive', false ); |
| 165 | if ( $this->archive ) { |
| 166 | // If we're indexing only for archive, this implies deletes |
| 167 | $this->indexUpdates = false; |
| 168 | } |
| 169 | $this->limit = $this->getOption( 'limit' ); |
| 170 | $buildChunks = $this->getOption( 'buildChunks' ); |
| 171 | if ( $buildChunks !== null ) { |
| 172 | $this->buildChunks( $buildChunks ); |
| 173 | return null; |
| 174 | } |
| 175 | $this->queue = $this->getOption( 'queue' ); |
| 176 | $this->maxJobs = $this->getOption( 'maxJobs' ) |
| 177 | ? intval( $this->getOption( 'maxJobs' ) ) |
| 178 | : null; |
| 179 | $this->pauseForJobs = $this->getOption( 'pauseForJobs' ) ? |
| 180 | intval( $this->getOption( 'pauseForJobs' ) ) : $this->maxJobs; |
| 181 | $updateFlags = $this->buildUpdateFlags(); |
| 182 | |
| 183 | if ( !$this->getOption( 'batch-size' ) && |
| 184 | ( $this->getOption( 'queue' ) || !$this->indexUpdates ) |
| 185 | ) { |
| 186 | $this->setBatchSize( 100 ); |
| 187 | } |
| 188 | |
| 189 | $this->namespace = $this->hasOption( 'namespace' ) ? |
| 190 | intval( $this->getOption( 'namespace' ) ) : null; |
| 191 | |
| 192 | $this->excludeContentTypes = array_filter( array_map( |
| 193 | 'trim', |
| 194 | explode( ',', $this->getOption( 'excludeContentTypes', '' ) ) |
| 195 | ) ); |
| 196 | |
| 197 | $operationName = $this->indexUpdates |
| 198 | ? ( $this->queue ? 'Queued' : 'Indexed' ) |
| 199 | : ( $this->archive ? 'Archived' : 'Deleted' ); |
| 200 | |
| 201 | $operationStartTime = microtime( true ); |
| 202 | $completed = 0; |
| 203 | $rate = 0; |
| 204 | |
| 205 | if ( $this->runWithIds ) { |
| 206 | $it = $this->getIdsIterator(); |
| 207 | // @phan-suppress-next-line PhanImpossibleTypeComparison |
| 208 | } elseif ( $this->indexUpdates && $this->fromDate === null ) { |
| 209 | $it = $this->getUpdatesByIdIterator(); |
| 210 | } elseif ( $this->indexUpdates ) { |
| 211 | $it = $this->getUpdatesByDateIterator(); |
| 212 | } else { |
| 213 | $it = $this->getDeletesIterator(); |
| 214 | } |
| 215 | $jobQueueGroup = MediaWikiServices::getInstance()->getJobQueueGroup(); |
| 216 | |
| 217 | foreach ( $it as $batch ) { |
| 218 | if ( $this->indexUpdates ) { |
| 219 | $size = count( $batch['updates'] ); |
| 220 | $updates = array_filter( $batch['updates'] ); |
| 221 | if ( $this->queue ) { |
| 222 | $this->waitForQueueToShrink( $wiki ); |
| 223 | $jobQueueGroup->push( Job\MassIndex::build( |
| 224 | $updates, $updateFlags, $this->getOption( 'cluster' ) |
| 225 | ) ); |
| 226 | } else { |
| 227 | // Update size with the actual number of updated documents. |
| 228 | $updater = $this->createUpdater(); |
| 229 | $size = $updater->updatePages( $updates, $updateFlags ); |
| 230 | } |
| 231 | } else { |
| 232 | $size = count( $batch['titlesToDelete'] ); |
| 233 | $updater = $this->createUpdater(); |
| 234 | $updater->archivePages( $batch['archive'] ); |
| 235 | if ( !$this->archive ) { |
| 236 | $updater->deletePages( $batch['titlesToDelete'], $batch['docIdsToDelete'] ); |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | $completed += $size; |
| 241 | $rate = $this->calculateIndexingRate( $completed, $operationStartTime ); |
| 242 | |
| 243 | $this->output( |
| 244 | "$wiki $operationName $size pages ending at {$batch['endingAt']} at $rate/second\n" |
| 245 | ); |
| 246 | if ( $this->limit !== null && $completed > $this->limit ) { |
| 247 | break; |
| 248 | } |
| 249 | } |
| 250 | $this->output( "$operationName a total of {$completed} pages at $rate/second\n" ); |
| 251 | $this->waitForQueueToDrain( $wiki ); |
| 252 | |
| 253 | return true; |
| 254 | } |
| 255 | |
| 256 | private function buildPageIdBatches() { |
| 257 | if ( !$this->indexUpdates || $this->hasOption( 'limit' ) |
| 258 | || $this->hasOption( 'from' ) || $this->hasOption( 'to' ) |
| 259 | || $this->hasOption( 'fromId' ) || $this->hasOption( 'toId' ) |
| 260 | ) { |
| 261 | $this->fatalError( |
| 262 | '--ids cannot be used with deletes/archive/from/to/fromId/toId/limit' |
| 263 | ); |
| 264 | } |
| 265 | |
| 266 | $pageIds = array_map( |
| 267 | function ( $pageId ) { |
| 268 | $pageId = trim( $pageId ); |
| 269 | if ( !ctype_digit( $pageId ) ) { |
| 270 | $this->fatalError( "Invalid page id provided in --ids, got '$pageId', " . |
| 271 | "expected a positive integer" ); |
| 272 | } |
| 273 | return intval( $pageId ); |
| 274 | }, |
| 275 | explode( ',', $this->getOption( 'ids' ) ) |
| 276 | ); |
| 277 | return array_unique( $pageIds, SORT_REGULAR ); |
| 278 | } |
| 279 | |
| 280 | private function buildUpdateFlags() { |
| 281 | $updateFlags = 0; |
| 282 | if ( $this->getOption( 'indexOnSkip' ) ) { |
| 283 | $updateFlags |= BuildDocument::INDEX_ON_SKIP; |
| 284 | } |
| 285 | if ( $this->getOption( 'skipParse' ) ) { |
| 286 | $updateFlags |= BuildDocument::SKIP_PARSE; |
| 287 | if ( !$this->getOption( 'batch-size' ) ) { |
| 288 | $this->setBatchSize( 50 ); |
| 289 | } |
| 290 | } |
| 291 | if ( $this->getOption( 'skipLinks' ) ) { |
| 292 | $updateFlags |= BuildDocument::SKIP_LINKS; |
| 293 | } |
| 294 | |
| 295 | return $updateFlags; |
| 296 | } |
| 297 | |
| 298 | private function waitForQueueToShrink( $wiki ) { |
| 299 | $now = microtime( true ); |
| 300 | if ( $now - $this->lastJobQueueCheckTime <= |
| 301 | self::SECONDS_BETWEEN_JOB_QUEUE_LENGTH_CHECKS |
| 302 | ) { |
| 303 | return; |
| 304 | } |
| 305 | |
| 306 | $this->lastJobQueueCheckTime = $now; |
| 307 | $queueSize = $this->getUpdatesInQueue(); |
| 308 | if ( $this->maxJobs === null || $this->maxJobs >= $queueSize ) { |
| 309 | return; |
| 310 | } |
| 311 | |
| 312 | do { |
| 313 | $this->output( |
| 314 | "$wiki Waiting while job queue shrinks: $this->pauseForJobs > $queueSize\n" |
| 315 | ); |
| 316 | usleep( self::SECONDS_BETWEEN_JOB_QUEUE_LENGTH_CHECKS * 1000000 ); |
| 317 | $queueSize = $this->getUpdatesInQueue(); |
| 318 | } while ( $this->pauseForJobs < $queueSize ); |
| 319 | } |
| 320 | |
| 321 | private function waitForQueueToDrain( $wiki ) { |
| 322 | if ( !$this->queue ) { |
| 323 | return; |
| 324 | } |
| 325 | |
| 326 | $lastQueueSizeForOurJob = PHP_INT_MAX; |
| 327 | $waitStartTime = microtime( true ); |
| 328 | $this->output( "Waiting for jobs to drain from the queue\n" ); |
| 329 | while ( true ) { |
| 330 | $queueSizeForOurJob = $this->getUpdatesInQueue(); |
| 331 | if ( $queueSizeForOurJob === 0 ) { |
| 332 | return; |
| 333 | } |
| 334 | // We subtract 5 because we some jobs may be added by deletes |
| 335 | if ( $queueSizeForOurJob > $lastQueueSizeForOurJob ) { |
| 336 | $this->output( "Queue size went up. Another script is likely adding jobs " . |
| 337 | "and it'll wait for them to empty.\n" ); |
| 338 | return; |
| 339 | } |
| 340 | if ( microtime( true ) - $waitStartTime > 120 ) { |
| 341 | // Wait at least two full minutes before we check if the job count went down. |
| 342 | // Less then that and we might be seeing lag from redis's counts. |
| 343 | $lastQueueSizeForOurJob = $queueSizeForOurJob; |
| 344 | } |
| 345 | $this->output( "$wiki $queueSizeForOurJob jobs left on the queue.\n" ); |
| 346 | usleep( self::SECONDS_BETWEEN_JOB_QUEUE_LENGTH_CHECKS * 1000000 ); |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | /** |
| 351 | * @param int $completed |
| 352 | * @param double $operationStartTime |
| 353 | * |
| 354 | * @return double |
| 355 | */ |
| 356 | private function calculateIndexingRate( $completed, $operationStartTime ) { |
| 357 | $rate = $completed / ( microtime( true ) - $operationStartTime ); |
| 358 | |
| 359 | if ( $rate < 1 ) { |
| 360 | return round( $rate, 1 ); |
| 361 | } |
| 362 | |
| 363 | return round( $rate ); |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * Do some simple sanity checking to make sure we've got indexes to populate. |
| 368 | * Note this isn't nearly as robust as updateSearchIndexConfig is, but it's |
| 369 | * not designed to be. |
| 370 | * |
| 371 | * @return bool |
| 372 | */ |
| 373 | private function simpleCheckIndexes() { |
| 374 | $indexBaseName = $this->getSearchConfig()->get( SearchConfig::INDEX_BASE_NAME ); |
| 375 | |
| 376 | // Top-level alias needs to exist |
| 377 | if ( !$this->getConnection()->getIndex( $indexBaseName )->exists() ) { |
| 378 | return false; |
| 379 | } |
| 380 | |
| 381 | // Now check all index types to see if they exist |
| 382 | foreach ( $this->getConnection()->getAllIndexSuffixes() as $indexSuffix ) { |
| 383 | // If the alias for this type doesn't exist, fail |
| 384 | if ( !$this->getConnection()->getIndex( $indexBaseName, $indexSuffix )->exists() ) { |
| 385 | return false; |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | return true; |
| 390 | } |
| 391 | |
| 392 | protected function getDeletesIterator() { |
| 393 | $dbr = $this->getDB( DB_REPLICA, [ 'vslow' ] ); |
| 394 | $it = new BatchRowIterator( |
| 395 | $dbr, |
| 396 | 'logging', |
| 397 | [ 'log_timestamp' ], |
| 398 | $this->getBatchSize() |
| 399 | ); |
| 400 | |
| 401 | $this->attachPageConditions( $dbr, $it, 'log' ); |
| 402 | $this->attachTimestampConditions( $dbr, $it, 'log' ); |
| 403 | $it->addConditions( [ |
| 404 | 'log_type' => 'delete', |
| 405 | 'log_action' => 'delete', |
| 406 | 'EXISTS(select * from archive where ar_title = log_title and ar_namespace = log_namespace)', |
| 407 | // Prior to 2010 the logging table contains nulls. As the docs in elasticsearch use the page id |
| 408 | // as the document id we cannot handle these old rows. |
| 409 | $dbr->expr( 'log_page', '!=', null ), |
| 410 | ] ); |
| 411 | |
| 412 | $it->setFetchColumns( [ 'log_timestamp', 'log_namespace', 'log_title', 'log_page' ] ); |
| 413 | |
| 414 | $it->setCaller( __METHOD__ ); |
| 415 | |
| 416 | return new CallbackIterator( $it, function ( $batch ) { |
| 417 | $titlesToDelete = []; |
| 418 | $docIdsToDelete = []; |
| 419 | $archive = []; |
| 420 | foreach ( $batch as $row ) { |
| 421 | $title = Title::makeTitle( $row->log_namespace, $row->log_title ); |
| 422 | $id = $this->getSearchConfig()->makeId( $row->log_page ); |
| 423 | $titlesToDelete[] = $title; |
| 424 | $docIdsToDelete[] = $id; |
| 425 | $archive[] = [ |
| 426 | 'title' => $title, |
| 427 | 'page' => $id, |
| 428 | ]; |
| 429 | } |
| 430 | |
| 431 | return [ |
| 432 | 'titlesToDelete' => $titlesToDelete, |
| 433 | 'docIdsToDelete' => $docIdsToDelete, |
| 434 | 'archive' => $archive, |
| 435 | 'endingAt' => isset( $row ) |
| 436 | ? ( new MWTimestamp( $row->log_timestamp ) )->getTimestamp( TS_ISO_8601 ) |
| 437 | : 'unknown', |
| 438 | ]; |
| 439 | } ); |
| 440 | } |
| 441 | |
| 442 | protected function getIdsIterator() { |
| 443 | $dbr = $this->getDB( DB_REPLICA, [ 'vslow' ] ); |
| 444 | $pageQuery = WikiPage::getQueryInfo(); |
| 445 | $it = new BatchRowIterator( $dbr, $pageQuery['tables'], 'page_id', $this->getBatchSize() ); |
| 446 | $it->setFetchColumns( $pageQuery['fields'] ); |
| 447 | $it->addJoinConditions( $pageQuery['joins'] ); |
| 448 | $it->addConditions( [ 'page_id' => $this->pageIds ] ); |
| 449 | $it->setCaller( __METHOD__ ); |
| 450 | $this->attachPageConditions( $dbr, $it, 'page' ); |
| 451 | |
| 452 | return $this->wrapDecodeResults( $it, 'page_id' ); |
| 453 | } |
| 454 | |
| 455 | protected function getUpdatesByDateIterator() { |
| 456 | $dbr = $this->getDB( DB_REPLICA, [ 'vslow' ] ); |
| 457 | $pageQuery = WikiPage::getQueryInfo(); |
| 458 | $it = new BatchRowIterator( |
| 459 | $dbr, |
| 460 | array_merge( $pageQuery['tables'], [ 'revision' ] ), |
| 461 | [ 'rev_timestamp', 'page_id' ], |
| 462 | $this->getBatchSize() |
| 463 | ); |
| 464 | $it->setFetchColumns( $pageQuery['fields'] ); |
| 465 | $it->addJoinConditions( $pageQuery['joins'] ); |
| 466 | $it->addJoinConditions( [ |
| 467 | 'revision' => [ 'JOIN', [ 'rev_page = page_id', 'rev_id = page_latest' ] ] |
| 468 | ] ); |
| 469 | $it->setCaller( __METHOD__ ); |
| 470 | |
| 471 | $this->attachTimestampConditions( $dbr, $it, 'rev' ); |
| 472 | $this->attachPageConditions( $dbr, $it, 'page' ); |
| 473 | |
| 474 | return $this->wrapDecodeResults( $it, 'rev_timestamp' ); |
| 475 | } |
| 476 | |
| 477 | protected function getUpdatesByIdIterator() { |
| 478 | $dbr = $this->getDB( DB_REPLICA, [ 'vslow' ] ); |
| 479 | $pageQuery = WikiPage::getQueryInfo(); |
| 480 | $it = new BatchRowIterator( $dbr, $pageQuery['tables'], 'page_id', $this->getBatchSize() ); |
| 481 | $it->setFetchColumns( $pageQuery['fields'] ); |
| 482 | $it->addJoinConditions( $pageQuery['joins'] ); |
| 483 | $it->setCaller( __METHOD__ ); |
| 484 | $fromId = $this->getOption( 'fromId', 0 ); |
| 485 | if ( $fromId > 0 ) { |
| 486 | $it->addConditions( [ |
| 487 | $dbr->expr( 'page_id', '>=', $fromId ), |
| 488 | ] ); |
| 489 | } |
| 490 | if ( $this->toId ) { |
| 491 | $it->addConditions( [ |
| 492 | $dbr->expr( 'page_id', '<=', $this->toId ), |
| 493 | ] ); |
| 494 | } |
| 495 | |
| 496 | $this->attachPageConditions( $dbr, $it, 'page' ); |
| 497 | |
| 498 | return $this->wrapDecodeResults( $it, 'page_id' ); |
| 499 | } |
| 500 | |
| 501 | private function attachTimestampConditions( |
| 502 | IDatabase $dbr, BatchRowIterator $it, $columnPrefix |
| 503 | ) { |
| 504 | // When initializing we guarantee that if either fromDate or toDate are provided |
| 505 | // the other has a sane default value. |
| 506 | if ( $this->fromDate !== null ) { |
| 507 | $it->addConditions( [ |
| 508 | $dbr->expr( "{$columnPrefix}_timestamp", '>=', $dbr->timestamp( $this->fromDate ) ), |
| 509 | $dbr->expr( "{$columnPrefix}_timestamp", '<=', $dbr->timestamp( $this->toDate ) ), |
| 510 | ] ); |
| 511 | } |
| 512 | } |
| 513 | |
| 514 | private function attachPageConditions( IDatabase $dbr, BatchRowIterator $it, $columnPrefix ) { |
| 515 | if ( $this->namespace !== null ) { |
| 516 | $it->addConditions( [ |
| 517 | "{$columnPrefix}_namespace" => $this->namespace, |
| 518 | ] ); |
| 519 | } |
| 520 | if ( $this->excludeContentTypes ) { |
| 521 | $it->addConditions( [ |
| 522 | $dbr->expr( "{$columnPrefix}_content_model", '!=', $this->excludeContentTypes ), |
| 523 | ] ); |
| 524 | } |
| 525 | if ( $this->hasOption( 'useDbIndex' ) ) { |
| 526 | $index = $this->getOption( 'useDbIndex' ); |
| 527 | $it->addOptions( [ 'USE INDEX' => $index ] ); |
| 528 | } |
| 529 | } |
| 530 | |
| 531 | /** |
| 532 | * @param BatchRowIterator $it |
| 533 | * @param string $endingAtColumn |
| 534 | * @return CallbackIterator |
| 535 | */ |
| 536 | private function wrapDecodeResults( BatchRowIterator $it, $endingAtColumn ) { |
| 537 | return new CallbackIterator( $it, function ( $batch ) use ( $endingAtColumn ) { |
| 538 | // Build the updater outside the loop because it stores the redirects it hits. |
| 539 | // Don't build it at the top level so those are stored when it is freed. |
| 540 | $updater = $this->createUpdater(); |
| 541 | |
| 542 | $pages = []; |
| 543 | $wikiPageFactory = MediaWikiServices::getInstance()->getWikiPageFactory(); |
| 544 | foreach ( $batch as $row ) { |
| 545 | // No need to call Updater::traceRedirects here because we know this is a valid page |
| 546 | // because it is in the database. |
| 547 | $page = $wikiPageFactory->newFromRow( $row, IDBAccessObject::READ_LATEST ); |
| 548 | |
| 549 | // null pages still get attached to keep the counts the same. They will be filtered |
| 550 | // later on. |
| 551 | $pages[] = $this->decidePage( $updater, $page ); |
| 552 | } |
| 553 | |
| 554 | if ( isset( $row ) ) { |
| 555 | if ( $endingAtColumn === 'rev_timestamp' ) { |
| 556 | $ts = new MWTimestamp( $row->rev_timestamp ); |
| 557 | $endingAt = $ts->getTimestamp( TS_ISO_8601 ); |
| 558 | } elseif ( $endingAtColumn === 'page_id' ) { |
| 559 | $endingAt = $row->page_id; |
| 560 | } else { |
| 561 | throw new UnexpectedValueException( 'Unknown $endingAtColumn: ' . $endingAtColumn ); |
| 562 | } |
| 563 | } else { |
| 564 | $endingAt = 'unknown'; |
| 565 | } |
| 566 | |
| 567 | return [ |
| 568 | 'updates' => $pages, |
| 569 | 'endingAt' => $endingAt, |
| 570 | ]; |
| 571 | } ); |
| 572 | } |
| 573 | |
| 574 | /** |
| 575 | * Determine the actual page in the index that needs to be updated, based on a |
| 576 | * source page. |
| 577 | * |
| 578 | * @param Updater $updater |
| 579 | * @param WikiPage $page |
| 580 | * @return WikiPage|null WikiPage to be updated, or null if none. |
| 581 | */ |
| 582 | private function decidePage( Updater $updater, WikiPage $page ) { |
| 583 | try { |
| 584 | $content = $page->getContent(); |
| 585 | } catch ( Throwable $ex ) { |
| 586 | LoggerFactory::getInstance( 'CirrusSearch' )->warning( |
| 587 | "Error deserializing content, skipping page: {pageId}", |
| 588 | [ 'pageId' => $page->getTitle()->getArticleID() ] |
| 589 | ); |
| 590 | return null; |
| 591 | } |
| 592 | |
| 593 | if ( $content === null ) { |
| 594 | // Skip pages without content. Pages have no content because their latest revision |
| 595 | // as loaded by the query above doesn't exist. |
| 596 | $this->output( |
| 597 | 'Skipping page with no content: ' . $page->getTitle()->getArticleID() . "\n" |
| 598 | ); |
| 599 | return null; |
| 600 | } |
| 601 | |
| 602 | if ( !$content->isRedirect() ) { |
| 603 | return $page; |
| 604 | } |
| 605 | |
| 606 | if ( $this->toDate === null ) { |
| 607 | // Looks like we accidentally picked up a redirect when we were indexing by id and thus |
| 608 | // trying to ignore redirects! Just ignore it! We would filter them out at the db |
| 609 | // level but that is slow for large wikis. |
| 610 | return null; |
| 611 | } |
| 612 | |
| 613 | // We found a redirect. Great. Since we can't index special pages and redirects to special |
| 614 | // pages are totally possible, as well as fun stuff like redirect loops, we need to use |
| 615 | // Updater's redirect tracing logic which is very complete. Also, it returns null on |
| 616 | // self redirects. Great! |
| 617 | [ $page, ] = $updater->traceRedirects( $page->getTitle() ); |
| 618 | |
| 619 | if ( $page != null && |
| 620 | Title::makeTitleSafe( $page->getTitle()->getNamespace(), $page->getTitle()->getText() ) === null |
| 621 | ) { |
| 622 | // The title cannot be rebuilt from its ns_prefix + text. |
| 623 | // It happens if an invalid title is present in the DB |
| 624 | // We may prefer to not index them as they are hardly viewable |
| 625 | $this->output( 'Skipping page with invalid title: ' . $page->getTitle()->getPrefixedText() ); |
| 626 | return null; |
| 627 | } |
| 628 | |
| 629 | return $page; |
| 630 | } |
| 631 | |
| 632 | /** |
| 633 | * @param string|int $buildChunks If specified as a number then chunks no |
| 634 | * larger than that size are spat out. If specified as a number followed |
| 635 | * by the word "total" without a space between them then that many chunks |
| 636 | * will be spat out sized to cover the entire wiki. |
| 637 | */ |
| 638 | private function buildChunks( $buildChunks ) { |
| 639 | $dbr = $this->getDB( DB_REPLICA, [ 'vslow' ] ); |
| 640 | if ( $this->toId === null ) { |
| 641 | $this->toId = $dbr->selectField( 'page', 'MAX(page_id)', [], __METHOD__ ); |
| 642 | if ( $this->toId === false ) { |
| 643 | $this->fatalError( "Couldn't find any pages to index." ); |
| 644 | } |
| 645 | } |
| 646 | $fromId = $this->getOption( 'fromId' ); |
| 647 | if ( $fromId === null ) { |
| 648 | $fromId = $dbr->selectField( 'page', 'MIN(page_id) - 1', [], __METHOD__ ); |
| 649 | if ( $fromId === false ) { |
| 650 | $this->fatalError( "Couldn't find any pages to index." ); |
| 651 | } |
| 652 | } |
| 653 | if ( $fromId === $this->toId ) { |
| 654 | $this->fatalError( |
| 655 | "Couldn't find any pages to index. fromId = $fromId = $this->toId = toId." |
| 656 | ); |
| 657 | } |
| 658 | $builder = new \CirrusSearch\Maintenance\ChunkBuilder(); |
| 659 | $builder->build( $this->mSelf, $this->mOptions, $buildChunks, $fromId, $this->toId ); |
| 660 | } |
| 661 | |
| 662 | /** |
| 663 | * Get the number of cirrusSearchMassIndex jobs in the queue. |
| 664 | * @return int length |
| 665 | */ |
| 666 | private function getUpdatesInQueue() { |
| 667 | return MediaWikiServices::getInstance()->getJobQueueGroup()->get( 'cirrusSearchMassIndex' )->getSize(); |
| 668 | } |
| 669 | |
| 670 | /** |
| 671 | * @return Updater |
| 672 | */ |
| 673 | private function createUpdater() { |
| 674 | return Updater::build( $this->getSearchConfig(), $this->getOption( 'cluster', null ) ); |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | $maintClass = ForceSearchIndex::class; |
| 679 | require_once RUN_MAINTENANCE_IF_MAIN; |