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| 1 | <?php |
| 2 | /** |
| 3 | * Delete old (non-current) revisions from the database |
| 4 | * |
| 5 | * @license GPL-2.0-or-later |
| 6 | * @file |
| 7 | * @ingroup Maintenance |
| 8 | * @author Rob Church <robchur@gmail.com> |
| 9 | */ |
| 10 | |
| 11 | use MediaWiki\Maintenance\Maintenance; |
| 12 | |
| 13 | // @codeCoverageIgnoreStart |
| 14 | require_once __DIR__ . '/Maintenance.php'; |
| 15 | // @codeCoverageIgnoreEnd |
| 16 | |
| 17 | /** |
| 18 | * Maintenance script that deletes old (non-current) revisions from the database. |
| 19 | * |
| 20 | * @ingroup Maintenance |
| 21 | */ |
| 22 | class DeleteOldRevisions extends Maintenance { |
| 23 | public function __construct() { |
| 24 | parent::__construct(); |
| 25 | $this->addDescription( 'Delete old (non-current) revisions from the database' ); |
| 26 | $this->addOption( 'delete', 'Actually perform the deletion' ); |
| 27 | $this->addArg( 'page_id', 'List of page ids to work on', false, true ); |
| 28 | } |
| 29 | |
| 30 | public function execute() { |
| 31 | $this->output( "Delete old revisions\n\n" ); |
| 32 | $this->doDelete( $this->hasOption( 'delete' ), $this->getArgs( 'page_id' ) ); |
| 33 | } |
| 34 | |
| 35 | private function doDelete( bool $delete = false, array $pageIds = [] ) { |
| 36 | # Data should come off the master, wrapped in a transaction |
| 37 | $dbw = $this->getPrimaryDB(); |
| 38 | $this->beginTransactionRound( __METHOD__ ); |
| 39 | |
| 40 | $pageConds = []; |
| 41 | $revConds = []; |
| 42 | |
| 43 | # If a list of page_ids was provided, limit results to that set of page_ids |
| 44 | if ( count( $pageIds ) > 0 ) { |
| 45 | $pageConds['page_id'] = $pageIds; |
| 46 | $revConds['rev_page'] = $pageIds; |
| 47 | $this->output( "Limiting to page IDs " . implode( ',', $pageIds ) . "\n" ); |
| 48 | } |
| 49 | |
| 50 | # Get "active" revisions from the page table |
| 51 | $this->output( "Searching for active revisions..." ); |
| 52 | $latestRevs = $dbw->newSelectQueryBuilder() |
| 53 | ->select( 'page_latest' ) |
| 54 | ->from( 'page' ) |
| 55 | ->where( $pageConds ) |
| 56 | ->caller( __METHOD__ ) |
| 57 | ->fetchFieldValues(); |
| 58 | $this->output( "done.\n" ); |
| 59 | |
| 60 | # Get all revisions that aren't in this set |
| 61 | $this->output( "Searching for inactive revisions..." ); |
| 62 | if ( count( $latestRevs ) > 0 ) { |
| 63 | $revConds[] = $dbw->expr( 'rev_id', '!=', $latestRevs ); |
| 64 | } |
| 65 | $oldRevs = $dbw->newSelectQueryBuilder() |
| 66 | ->select( 'rev_id' ) |
| 67 | ->from( 'revision' ) |
| 68 | ->where( $revConds ) |
| 69 | ->caller( __METHOD__ ) |
| 70 | ->fetchFieldValues(); |
| 71 | $this->output( "done.\n" ); |
| 72 | |
| 73 | # Inform the user of what we're going to do |
| 74 | $count = count( $oldRevs ); |
| 75 | $this->output( "$count old revisions found.\n" ); |
| 76 | |
| 77 | # Delete as appropriate |
| 78 | if ( $delete && $count ) { |
| 79 | $this->output( "Deleting..." ); |
| 80 | $dbw->newDeleteQueryBuilder() |
| 81 | ->deleteFrom( 'revision' ) |
| 82 | ->where( [ 'rev_id' => $oldRevs ] ) |
| 83 | ->caller( __METHOD__ )->execute(); |
| 84 | $dbw->newDeleteQueryBuilder() |
| 85 | ->deleteFrom( 'ip_changes' ) |
| 86 | ->where( [ 'ipc_rev_id' => $oldRevs ] ) |
| 87 | ->caller( __METHOD__ )->execute(); |
| 88 | $this->output( "done.\n" ); |
| 89 | } |
| 90 | |
| 91 | # Purge redundant text records |
| 92 | $this->commitTransactionRound( __METHOD__ ); |
| 93 | if ( $delete ) { |
| 94 | $this->purgeRedundantText( true ); |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | // @codeCoverageIgnoreStart |
| 100 | $maintClass = DeleteOldRevisions::class; |
| 101 | require_once RUN_MAINTENANCE_IF_MAIN; |
| 102 | // @codeCoverageIgnoreEnd |