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| 1 | <?php |
| 2 | /** |
| 3 | * Find all rows in the categorylinks table whose collation is out-of-date |
| 4 | * (cl_collation != $wgCategoryCollation) and repopulate cl_sortkey |
| 5 | * using the page title and cl_sortkey_prefix. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 20 | * http://www.gnu.org/copyleft/gpl.html |
| 21 | * |
| 22 | * @file |
| 23 | * @ingroup Maintenance |
| 24 | * @author Aryeh Gregor (Simetrical) |
| 25 | */ |
| 26 | |
| 27 | require_once __DIR__ . '/Maintenance.php'; |
| 28 | |
| 29 | use MediaWiki\MainConfigNames; |
| 30 | use MediaWiki\Title\NamespaceInfo; |
| 31 | use MediaWiki\Title\Title; |
| 32 | use Wikimedia\Rdbms\IDatabase; |
| 33 | use Wikimedia\Rdbms\IMaintainableDatabase; |
| 34 | use Wikimedia\Rdbms\IResultWrapper; |
| 35 | |
| 36 | /** |
| 37 | * Maintenance script that will find all rows in the categorylinks table |
| 38 | * whose collation is out-of-date. |
| 39 | * |
| 40 | * @ingroup Maintenance |
| 41 | */ |
| 42 | class UpdateCollation extends Maintenance { |
| 43 | /** @var int[] */ |
| 44 | public $sizeHistogram = []; |
| 45 | |
| 46 | /** @var int */ |
| 47 | private $numRowsProcessed = 0; |
| 48 | |
| 49 | /** @var bool */ |
| 50 | private $force; |
| 51 | |
| 52 | /** @var bool */ |
| 53 | private $dryRun; |
| 54 | |
| 55 | /** @var bool */ |
| 56 | private $verboseStats; |
| 57 | |
| 58 | /** @var Collation */ |
| 59 | private $collation; |
| 60 | |
| 61 | /** @var string */ |
| 62 | private $collationName; |
| 63 | |
| 64 | /** @var string|null */ |
| 65 | private $targetTable; |
| 66 | |
| 67 | /** @var IDatabase */ |
| 68 | private $dbr; |
| 69 | |
| 70 | /** @var IMaintainableDatabase */ |
| 71 | private $dbw; |
| 72 | |
| 73 | /** @var NamespaceInfo */ |
| 74 | private $namespaceInfo; |
| 75 | |
| 76 | public function __construct() { |
| 77 | parent::__construct(); |
| 78 | |
| 79 | $this->addDescription( <<<TEXT |
| 80 | This script will find all rows in the categorylinks table whose collation is |
| 81 | out-of-date (cl_collation is not the same as \$wgCategoryCollation) and |
| 82 | repopulate cl_sortkey using the page title and cl_sortkey_prefix. If all |
| 83 | collations are up-to-date, it will do nothing. |
| 84 | TEXT |
| 85 | ); |
| 86 | |
| 87 | $this->setBatchSize( 100 ); |
| 88 | $this->addOption( 'force', 'Run on all rows, even if the collation is ' . |
| 89 | 'supposed to be up-to-date.', false, false, 'f' ); |
| 90 | $this->addOption( 'previous-collation', 'Set the previous value of ' . |
| 91 | '$wgCategoryCollation here to speed up this script, especially if your ' . |
| 92 | 'categorylinks table is large. This will only update rows with that ' . |
| 93 | 'collation, though, so it may miss out-of-date rows with a different, ' . |
| 94 | 'even older collation.', false, true ); |
| 95 | $this->addOption( 'target-collation', 'Set this to the new collation type to ' . |
| 96 | 'use instead of $wgCategoryCollation. Usually you should not use this, ' . |
| 97 | 'you should just update $wgCategoryCollation in LocalSettings.php.', |
| 98 | false, true ); |
| 99 | $this->addOption( 'target-table', 'Copy rows from categorylinks into the ' . |
| 100 | 'specified table instead of updating them in place.', false, true ); |
| 101 | $this->addOption( 'remote', 'Use Shellbox to calculate the new sort keys ' . |
| 102 | 'remotely.' ); |
| 103 | $this->addOption( 'dry-run', 'Don\'t actually change the collations, just ' . |
| 104 | 'compile statistics.' ); |
| 105 | $this->addOption( 'verbose-stats', 'Show more statistics.' ); |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Get services and initialise member variables |
| 110 | */ |
| 111 | private function init() { |
| 112 | $services = $this->getServiceContainer(); |
| 113 | $this->namespaceInfo = $services->getNamespaceInfo(); |
| 114 | |
| 115 | if ( $this->hasOption( 'target-collation' ) ) { |
| 116 | $this->collationName = $this->getOption( 'target-collation' ); |
| 117 | } else { |
| 118 | $this->collationName = $this->getConfig()->get( MainConfigNames::CategoryCollation ); |
| 119 | } |
| 120 | if ( $this->hasOption( 'remote' ) ) { |
| 121 | $realCollationName = 'remote-' . $this->collationName; |
| 122 | } else { |
| 123 | $realCollationName = $this->collationName; |
| 124 | } |
| 125 | $this->collation = $services->getCollationFactory()->makeCollation( $realCollationName ); |
| 126 | |
| 127 | // Collation check: in some cases the constructor will work, |
| 128 | // but this will raise an exception, breaking all category pages |
| 129 | $this->collation->getSortKey( 'MediaWiki' ); |
| 130 | |
| 131 | $this->force = $this->getOption( 'force' ); |
| 132 | $this->dryRun = $this->getOption( 'dry-run' ); |
| 133 | $this->verboseStats = $this->getOption( 'verbose-stats' ); |
| 134 | $this->dbw = $this->getPrimaryDB(); |
| 135 | $this->dbr = $this->getReplicaDB(); |
| 136 | $this->targetTable = $this->getOption( 'target-table' ); |
| 137 | } |
| 138 | |
| 139 | public function execute() { |
| 140 | $this->init(); |
| 141 | $batchSize = $this->getBatchSize(); |
| 142 | |
| 143 | if ( $this->targetTable ) { |
| 144 | if ( !$this->dbw->tableExists( $this->targetTable, __METHOD__ ) ) { |
| 145 | $this->output( "Creating table {$this->targetTable}\n" ); |
| 146 | $this->dbw->query( |
| 147 | 'CREATE TABLE ' . $this->dbw->tableName( $this->targetTable ) . |
| 148 | ' LIKE ' . $this->dbw->tableName( 'categorylinks' ), |
| 149 | __METHOD__ |
| 150 | ); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | $collationConds = []; |
| 155 | if ( !$this->force && !$this->targetTable ) { |
| 156 | if ( $this->hasOption( 'previous-collation' ) ) { |
| 157 | $collationConds['cl_collation'] = $this->getOption( 'previous-collation' ); |
| 158 | } else { |
| 159 | $collationConds[] = $this->dbr->expr( 'cl_collation', '!=', $this->collationName ); |
| 160 | } |
| 161 | } |
| 162 | $maxPageId = (int)$this->dbr->newSelectQueryBuilder() |
| 163 | ->select( 'MAX(page_id)' ) |
| 164 | ->from( 'page' ) |
| 165 | ->caller( __METHOD__ )->fetchField(); |
| 166 | $batchValue = 0; |
| 167 | do { |
| 168 | $this->output( "Selecting next $batchSize pages from cl_from = $batchValue... " ); |
| 169 | |
| 170 | // cl_type must be selected as a number for proper paging because |
| 171 | // enums suck. |
| 172 | if ( $this->dbw->getType() === 'mysql' ) { |
| 173 | $clType = 'cl_type+0 AS "cl_type_numeric"'; |
| 174 | } else { |
| 175 | $clType = 'cl_type'; |
| 176 | } |
| 177 | $res = $this->dbw->newSelectQueryBuilder() |
| 178 | ->select( [ |
| 179 | 'cl_from', 'cl_to', 'cl_sortkey_prefix', 'cl_collation', |
| 180 | 'cl_sortkey', $clType, 'cl_timestamp', |
| 181 | 'page_namespace', 'page_title' |
| 182 | ] ) |
| 183 | ->from( 'categorylinks' ) |
| 184 | // per T58041 |
| 185 | ->straightJoin( 'page', null, 'cl_from = page_id' ) |
| 186 | ->where( $collationConds ) |
| 187 | ->andWhere( |
| 188 | $this->dbw->expr( 'cl_from', '>=', $batchValue ) |
| 189 | ->and( 'cl_from', '<', $batchValue + $this->getBatchSize() ) |
| 190 | ) |
| 191 | ->orderBy( 'cl_from' ) |
| 192 | ->caller( __METHOD__ )->fetchResultSet(); |
| 193 | $this->output( "processing... " ); |
| 194 | |
| 195 | if ( $res->numRows() ) { |
| 196 | if ( $this->targetTable ) { |
| 197 | $this->copyBatch( $res ); |
| 198 | } else { |
| 199 | $this->updateBatch( $res ); |
| 200 | } |
| 201 | } |
| 202 | $batchValue += $this->getBatchSize(); |
| 203 | |
| 204 | if ( $this->dryRun ) { |
| 205 | $this->output( "{$this->numRowsProcessed} rows would be updated so far.\n" ); |
| 206 | } else { |
| 207 | $this->output( "{$this->numRowsProcessed} done.\n" ); |
| 208 | } |
| 209 | } while ( $maxPageId >= $batchValue ); |
| 210 | |
| 211 | if ( !$this->dryRun ) { |
| 212 | $this->output( "{$this->numRowsProcessed} rows processed\n" ); |
| 213 | } |
| 214 | |
| 215 | if ( $this->verboseStats ) { |
| 216 | $this->output( "\n" ); |
| 217 | $this->showSortKeySizeHistogram(); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * Update a set of rows in the categorylinks table |
| 223 | */ |
| 224 | private function updateBatch( IResultWrapper $res ) { |
| 225 | if ( !$this->dryRun ) { |
| 226 | $this->beginTransaction( $this->dbw, __METHOD__ ); |
| 227 | } |
| 228 | foreach ( $res as $row ) { |
| 229 | $title = Title::newFromRow( $row ); |
| 230 | if ( !$row->cl_collation ) { |
| 231 | # This is an old-style row, so the sortkey needs to be |
| 232 | # converted. |
| 233 | if ( $row->cl_sortkey === $title->getText() |
| 234 | || $row->cl_sortkey === $title->getPrefixedText() |
| 235 | ) { |
| 236 | $prefix = ''; |
| 237 | } else { |
| 238 | # Custom sortkey, so use it as a prefix |
| 239 | $prefix = $row->cl_sortkey; |
| 240 | } |
| 241 | } else { |
| 242 | $prefix = $row->cl_sortkey_prefix; |
| 243 | } |
| 244 | # cl_type will be wrong for lots of pages if cl_collation is 0, |
| 245 | # so let's update it while we're here. |
| 246 | $type = $this->namespaceInfo->getCategoryLinkType( $row->page_namespace ); |
| 247 | $newSortKey = $this->collation->getSortKey( |
| 248 | $title->getCategorySortkey( $prefix ) ); |
| 249 | $this->updateSortKeySizeHistogram( $newSortKey ); |
| 250 | // Truncate to 230 bytes to avoid DB error |
| 251 | $newSortKey = substr( $newSortKey, 0, 230 ); |
| 252 | |
| 253 | if ( $this->dryRun ) { |
| 254 | // Add 1 to the count if the sortkey was changed. (Note that this doesn't count changes in |
| 255 | // other fields, if any, those usually only happen when upgrading old MediaWikis.) |
| 256 | $this->numRowsProcessed += ( $row->cl_sortkey !== $newSortKey ); |
| 257 | } else { |
| 258 | $this->dbw->newUpdateQueryBuilder() |
| 259 | ->update( 'categorylinks' ) |
| 260 | ->set( [ |
| 261 | 'cl_sortkey' => $newSortKey, |
| 262 | 'cl_sortkey_prefix' => $prefix, |
| 263 | 'cl_collation' => $this->collationName, |
| 264 | 'cl_type' => $type, |
| 265 | 'cl_timestamp = cl_timestamp', |
| 266 | ] ) |
| 267 | ->where( [ 'cl_from' => $row->cl_from, 'cl_to' => $row->cl_to ] ) |
| 268 | ->caller( __METHOD__ ) |
| 269 | ->execute(); |
| 270 | $this->numRowsProcessed++; |
| 271 | } |
| 272 | } |
| 273 | if ( !$this->dryRun ) { |
| 274 | $this->commitTransaction( $this->dbw, __METHOD__ ); |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * Copy a set of rows to the target table |
| 280 | */ |
| 281 | private function copyBatch( IResultWrapper $res ) { |
| 282 | $sortKeyInputs = []; |
| 283 | foreach ( $res as $row ) { |
| 284 | $title = Title::newFromRow( $row ); |
| 285 | $sortKeyInputs[] = $title->getCategorySortkey( $row->cl_sortkey_prefix ); |
| 286 | } |
| 287 | $sortKeys = $this->collation->getSortKeys( $sortKeyInputs ); |
| 288 | $rowsToInsert = []; |
| 289 | foreach ( $res as $i => $row ) { |
| 290 | if ( !isset( $sortKeys[$i] ) ) { |
| 291 | throw new RuntimeException( 'Unable to get sort key' ); |
| 292 | } |
| 293 | $newSortKey = $sortKeys[$i]; |
| 294 | $this->updateSortKeySizeHistogram( $newSortKey ); |
| 295 | // Truncate to 230 bytes to avoid DB error |
| 296 | $newSortKey = substr( $newSortKey, 0, 230 ); |
| 297 | $type = $this->namespaceInfo->getCategoryLinkType( $row->page_namespace ); |
| 298 | $rowsToInsert[] = [ |
| 299 | 'cl_from' => $row->cl_from, |
| 300 | 'cl_to' => $row->cl_to, |
| 301 | 'cl_sortkey' => $newSortKey, |
| 302 | 'cl_sortkey_prefix' => $row->cl_sortkey_prefix, |
| 303 | 'cl_collation' => $this->collationName, |
| 304 | 'cl_type' => $type, |
| 305 | 'cl_timestamp' => $row->cl_timestamp |
| 306 | ]; |
| 307 | } |
| 308 | if ( $this->dryRun ) { |
| 309 | $this->numRowsProcessed += count( $rowsToInsert ); |
| 310 | } else { |
| 311 | $this->beginTransaction( $this->dbw, __METHOD__ ); |
| 312 | $this->dbw->newInsertQueryBuilder() |
| 313 | ->insertInto( $this->targetTable ) |
| 314 | ->ignore() |
| 315 | ->rows( $rowsToInsert ) |
| 316 | ->caller( __METHOD__ )->execute(); |
| 317 | $this->numRowsProcessed += $this->dbw->affectedRows(); |
| 318 | $this->commitTransaction( $this->dbw, __METHOD__ ); |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * Update the verbose statistics |
| 324 | */ |
| 325 | private function updateSortKeySizeHistogram( string $key ) { |
| 326 | if ( !$this->verboseStats ) { |
| 327 | return; |
| 328 | } |
| 329 | $length = strlen( $key ); |
| 330 | if ( !isset( $this->sizeHistogram[$length] ) ) { |
| 331 | $this->sizeHistogram[$length] = 0; |
| 332 | } |
| 333 | $this->sizeHistogram[$length]++; |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * Show the verbose statistics |
| 338 | */ |
| 339 | private function showSortKeySizeHistogram() { |
| 340 | if ( !$this->sizeHistogram ) { |
| 341 | return; |
| 342 | } |
| 343 | $maxLength = max( array_keys( $this->sizeHistogram ) ); |
| 344 | if ( $maxLength === 0 ) { |
| 345 | return; |
| 346 | } |
| 347 | $numBins = 20; |
| 348 | $coarseHistogram = array_fill( 0, $numBins, 0 ); |
| 349 | $coarseBoundaries = []; |
| 350 | $boundary = 0; |
| 351 | for ( $i = 0; $i < $numBins - 1; $i++ ) { |
| 352 | $boundary += $maxLength / $numBins; |
| 353 | $coarseBoundaries[$i] = round( $boundary ); |
| 354 | } |
| 355 | $coarseBoundaries[$numBins - 1] = $maxLength + 1; |
| 356 | $raw = ''; |
| 357 | for ( $i = 0; $i <= $maxLength; $i++ ) { |
| 358 | if ( $raw !== '' ) { |
| 359 | $raw .= ', '; |
| 360 | } |
| 361 | $val = $this->sizeHistogram[$i] ?? 0; |
| 362 | for ( $coarseIndex = 0; $coarseIndex < $numBins - 1; $coarseIndex++ ) { |
| 363 | // @phan-suppress-next-line PhanTypePossiblyInvalidDimOffset False positive |
| 364 | if ( $coarseBoundaries[$coarseIndex] > $i ) { |
| 365 | $coarseHistogram[$coarseIndex] += $val; |
| 366 | break; |
| 367 | } |
| 368 | } |
| 369 | if ( $coarseIndex === ( $numBins - 1 ) ) { |
| 370 | $coarseHistogram[$coarseIndex] += $val; |
| 371 | } |
| 372 | $raw .= $val; |
| 373 | } |
| 374 | |
| 375 | $this->output( "Sort key size histogram\nRaw data: $raw\n\n" ); |
| 376 | |
| 377 | $maxBinVal = max( $coarseHistogram ); |
| 378 | $scale = (int)( 60 / $maxBinVal ); |
| 379 | $prevBoundary = 0; |
| 380 | for ( $coarseIndex = 0; $coarseIndex < $numBins; $coarseIndex++ ) { |
| 381 | $val = $coarseHistogram[$coarseIndex] ?? 0; |
| 382 | // @phan-suppress-next-line PhanTypePossiblyInvalidDimOffset False positive |
| 383 | $boundary = $coarseBoundaries[$coarseIndex]; |
| 384 | $this->output( |
| 385 | sprintf( "%-10s %-10d |%s\n", |
| 386 | $prevBoundary . '-' . ( $boundary - 1 ) . ': ', |
| 387 | $val, |
| 388 | str_repeat( '*', $scale * $val ) |
| 389 | ) |
| 390 | ); |
| 391 | $prevBoundary = $boundary; |
| 392 | } |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | $maintClass = UpdateCollation::class; |
| 397 | require_once RUN_MAINTENANCE_IF_MAIN; |