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| 1 | <?php |
| 2 | /** |
| 3 | * Generic class to cleanup a database table. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | * @ingroup Maintenance |
| 22 | */ |
| 23 | |
| 24 | use MediaWiki\WikiMap\WikiMap; |
| 25 | |
| 26 | require_once __DIR__ . '/Maintenance.php'; |
| 27 | |
| 28 | /** |
| 29 | * Generic class to cleanup a database table. Already subclasses Maintenance. |
| 30 | * |
| 31 | * @ingroup Maintenance |
| 32 | */ |
| 33 | class TableCleanup extends Maintenance { |
| 34 | protected $defaultParams = [ |
| 35 | 'table' => 'page', |
| 36 | 'conds' => [], |
| 37 | 'index' => 'page_id', |
| 38 | 'callback' => 'processRow', |
| 39 | ]; |
| 40 | |
| 41 | protected $dryrun = false; |
| 42 | protected $reportInterval = 100; |
| 43 | |
| 44 | protected int $processed; |
| 45 | protected int $updated; |
| 46 | protected int $count; |
| 47 | protected float $startTime; |
| 48 | protected string $table; |
| 49 | |
| 50 | public function __construct() { |
| 51 | parent::__construct(); |
| 52 | $this->addOption( 'dry-run', 'Perform a dry run' ); |
| 53 | $this->addOption( 'reporting-interval', 'How often to print status line' ); |
| 54 | $this->setBatchSize( 100 ); |
| 55 | } |
| 56 | |
| 57 | public function execute() { |
| 58 | $this->reportInterval = $this->getOption( 'reporting-interval', $this->reportInterval ); |
| 59 | |
| 60 | $this->dryrun = $this->hasOption( 'dry-run' ); |
| 61 | |
| 62 | if ( $this->dryrun ) { |
| 63 | $this->output( "Checking for bad titles...\n" ); |
| 64 | } else { |
| 65 | $this->output( "Checking and fixing bad titles...\n" ); |
| 66 | } |
| 67 | |
| 68 | $this->runTable( $this->defaultParams ); |
| 69 | } |
| 70 | |
| 71 | protected function init( $count, $table ) { |
| 72 | $this->processed = 0; |
| 73 | $this->updated = 0; |
| 74 | $this->count = $count; |
| 75 | $this->startTime = microtime( true ); |
| 76 | $this->table = $table; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * @param int $updated |
| 81 | */ |
| 82 | protected function progress( $updated ) { |
| 83 | $this->updated += $updated; |
| 84 | $this->processed++; |
| 85 | if ( $this->processed % $this->reportInterval != 0 ) { |
| 86 | return; |
| 87 | } |
| 88 | $portion = $this->processed / $this->count; |
| 89 | $updateRate = $this->updated / $this->processed; |
| 90 | |
| 91 | $now = microtime( true ); |
| 92 | $delta = $now - $this->startTime; |
| 93 | $estimatedTotalTime = $delta / $portion; |
| 94 | $eta = $this->startTime + $estimatedTotalTime; |
| 95 | |
| 96 | $this->output( |
| 97 | sprintf( "%s %s: %6.2f%% done on %s; ETA %s [%d/%d] %.2f/sec <%.2f%% updated>\n", |
| 98 | WikiMap::getCurrentWikiDbDomain()->getId(), |
| 99 | wfTimestamp( TS_DB, intval( $now ) ), |
| 100 | $portion * 100.0, |
| 101 | $this->table, |
| 102 | wfTimestamp( TS_DB, intval( $eta ) ), |
| 103 | $this->processed, |
| 104 | $this->count, |
| 105 | $this->processed / $delta, |
| 106 | $updateRate * 100.0 |
| 107 | ) |
| 108 | ); |
| 109 | flush(); |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * @param array $params |
| 114 | */ |
| 115 | public function runTable( $params ) { |
| 116 | $dbr = $this->getReplicaDB(); |
| 117 | |
| 118 | if ( array_diff( array_keys( $params ), |
| 119 | [ 'table', 'conds', 'index', 'callback' ] ) |
| 120 | ) { |
| 121 | $this->fatalError( __METHOD__ . ': Missing parameter ' . implode( ', ', $params ) ); |
| 122 | } |
| 123 | |
| 124 | $table = $params['table']; |
| 125 | // count(*) would melt the DB for huge tables, we can estimate here |
| 126 | $count = $dbr->estimateRowCount( $table, '*', '', __METHOD__ ); |
| 127 | $this->init( $count, $table ); |
| 128 | $this->output( "Processing $table...\n" ); |
| 129 | |
| 130 | $index = (array)$params['index']; |
| 131 | $indexConds = []; |
| 132 | $callback = [ $this, $params['callback'] ]; |
| 133 | |
| 134 | while ( true ) { |
| 135 | $conds = array_merge( $params['conds'], $indexConds ); |
| 136 | $res = $dbr->newSelectQueryBuilder() |
| 137 | ->select( '*' ) |
| 138 | ->from( $table ) |
| 139 | ->where( $conds ) |
| 140 | ->orderBy( implode( ',', $index ) ) |
| 141 | ->limit( $this->getBatchSize() ) |
| 142 | ->caller( __METHOD__ )->fetchResultSet(); |
| 143 | if ( !$res->numRows() ) { |
| 144 | // Done |
| 145 | break; |
| 146 | } |
| 147 | |
| 148 | foreach ( $res as $row ) { |
| 149 | call_user_func( $callback, $row ); |
| 150 | } |
| 151 | |
| 152 | if ( $res->numRows() < $this->getBatchSize() ) { |
| 153 | // Done |
| 154 | break; |
| 155 | } |
| 156 | |
| 157 | // Update the conditions to select the next batch. |
| 158 | $conds = []; |
| 159 | foreach ( $index as $field ) { |
| 160 | // @phan-suppress-next-line PhanPossiblyUndeclaredVariable $res has at at least one item |
| 161 | $conds[ $field ] = $row->$field; |
| 162 | } |
| 163 | $indexConds = [ $dbr->buildComparison( '>', $conds ) ]; |
| 164 | } |
| 165 | |
| 166 | $this->output( "Finished $table... $this->updated of $this->processed rows updated\n" ); |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * @param string[] $matches |
| 171 | * @return string |
| 172 | */ |
| 173 | protected function hexChar( $matches ) { |
| 174 | return sprintf( "\\x%02x", ord( $matches[1] ) ); |
| 175 | } |
| 176 | } |