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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | */ |
| 20 | |
| 21 | // @codeCoverageIgnoreStart |
| 22 | require_once __DIR__ . '/Maintenance.php'; |
| 23 | // @codeCoverageIgnoreEnd |
| 24 | |
| 25 | /** |
| 26 | * Fix redirect pages with missing or incomplete row in the redirect table. |
| 27 | * |
| 28 | * @ingroup Maintenance |
| 29 | * @since 1.41 |
| 30 | */ |
| 31 | class FixInconsistentRedirects extends LoggedUpdateMaintenance { |
| 32 | |
| 33 | public function __construct() { |
| 34 | parent::__construct(); |
| 35 | $this->addDescription( 'Fix redirect pages with missing or incomplete row in the redirect table' ); |
| 36 | $this->setBatchSize( 100 ); |
| 37 | } |
| 38 | |
| 39 | protected function getUpdateKey() { |
| 40 | return __CLASS__; |
| 41 | } |
| 42 | |
| 43 | protected function doDBUpdates() { |
| 44 | $dbr = $this->getReplicaDB(); |
| 45 | |
| 46 | $builder = $dbr->newSelectQueryBuilder() |
| 47 | ->caller( __METHOD__ ) |
| 48 | ->from( 'page' ) |
| 49 | ->where( [ 'page_is_redirect' => 1 ] ); |
| 50 | |
| 51 | $this->output( "Fixing inconsistent redirects ...\n" ); |
| 52 | |
| 53 | $estimateCount = $builder->estimateRowCount(); |
| 54 | $this->output( "Estimated redirect page count: $estimateCount\n" ); |
| 55 | |
| 56 | $builder |
| 57 | ->limit( $this->getBatchSize() ) |
| 58 | ->leftJoin( 'redirect', null, 'page_id=rd_from' ) |
| 59 | ->select( [ 'rd_from', 'rd_interwiki', 'rd_fragment' ] ); |
| 60 | |
| 61 | // Using the page_redirect_namespace_len index to skip non-redirects |
| 62 | $index = [ 'page_is_redirect', 'page_namespace', 'page_len', 'page_id' ]; |
| 63 | $builder->select( $index )->orderBy( $index ); |
| 64 | $prevRow = []; |
| 65 | |
| 66 | $total = 0; |
| 67 | $updated = 0; |
| 68 | do { |
| 69 | $res = ( clone $builder ) |
| 70 | ->where( $prevRow ? [ $dbr->buildComparison( '>', $prevRow ) ] : [] ) |
| 71 | ->caller( __METHOD__ )->fetchResultSet(); |
| 72 | |
| 73 | foreach ( $res as $row ) { |
| 74 | // Only attempt write queries if the row or rd_interwiki/rd_fragment fields are missing |
| 75 | // (we don't include this condition in the query to avoid slow queries and bad estimates) |
| 76 | if ( $row->rd_from === null || $row->rd_interwiki === null || $row->rd_fragment === null ) { |
| 77 | RefreshLinks::fixRedirect( $this, $row->page_id ); |
| 78 | $updated++; |
| 79 | } |
| 80 | } |
| 81 | if ( isset( $row ) ) { |
| 82 | // Update the conditions to select the next batch |
| 83 | foreach ( $index as $field ) { |
| 84 | $prevRow[ $field ] = $row->$field; |
| 85 | } |
| 86 | } |
| 87 | |
| 88 | $this->waitForReplication(); |
| 89 | $total += $res->numRows(); |
| 90 | $this->output( "$updated/$total\n" ); |
| 91 | |
| 92 | } while ( $res->numRows() == $this->getBatchSize() ); |
| 93 | |
| 94 | $this->output( "Done, updated $updated of $total rows.\n" ); |
| 95 | return true; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | // @codeCoverageIgnoreStart |
| 100 | $maintClass = FixInconsistentRedirects::class; |
| 101 | require_once RUN_MAINTENANCE_IF_MAIN; |
| 102 | // @codeCoverageIgnoreEnd |