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| 1 | <?php |
| 2 | /** |
| 3 | * This script will remove any unused projects from the page_assessments_projects |
| 4 | * table. This may include WikiProjects that have been renamed or retired, or |
| 5 | * projects that were used in an assessment by mistake or for testing. |
| 6 | */ |
| 7 | |
| 8 | use MediaWiki\Maintenance\Maintenance; |
| 9 | |
| 10 | $IP = getenv( 'MW_INSTALL_PATH' ); |
| 11 | if ( $IP === false ) { |
| 12 | $IP = __DIR__ . '/../../..'; |
| 13 | } |
| 14 | require_once "$IP/maintenance/Maintenance.php"; |
| 15 | |
| 16 | class PurgeUnusedProjects extends Maintenance { |
| 17 | |
| 18 | public function __construct() { |
| 19 | parent::__construct(); |
| 20 | $this->requireExtension( 'PageAssessments' ); |
| 21 | $this->addDescription( "Purge unused projects from the page_assessments_projects table" ); |
| 22 | $this->addOption( 'dry-run', |
| 23 | "Show how many projects would be deleted, but don't actually purge them." ); |
| 24 | } |
| 25 | |
| 26 | public function execute() { |
| 27 | $dbw = $this->getDB( DB_PRIMARY ); |
| 28 | $dbr = $this->getDB( DB_REPLICA ); |
| 29 | // Count all the projects |
| 30 | $initialCount = $dbr->newSelectQueryBuilder() |
| 31 | ->select( 'COUNT(*)' ) |
| 32 | ->from( 'page_assessments_projects' ) |
| 33 | ->caller( __METHOD__ ) |
| 34 | ->fetchField(); |
| 35 | $this->output( "Projects before purge: $initialCount\n" ); |
| 36 | |
| 37 | // Build a list of all the projects that are parents of other projects |
| 38 | $projectIds1 = []; |
| 39 | $res = $dbr->newSelectQueryBuilder() |
| 40 | ->select( 'pap_parent_id' ) |
| 41 | ->distinct() |
| 42 | ->from( 'page_assessments_projects' ) |
| 43 | ->caller( __METHOD__ ) |
| 44 | ->fetchResultSet(); |
| 45 | foreach ( $res as $row ) { |
| 46 | if ( $row->pap_parent_id ) { |
| 47 | $projectIds1[] = $row->pap_parent_id; |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | // Build a list of all the projects that are used in assessments |
| 52 | $projectIds2 = []; |
| 53 | $res = $dbr->newSelectQueryBuilder() |
| 54 | ->select( 'pa_project_id' ) |
| 55 | ->distinct() |
| 56 | ->from( 'page_assessments' ) |
| 57 | ->caller( __METHOD__ ) |
| 58 | ->fetchResultset(); |
| 59 | foreach ( $res as $row ) { |
| 60 | if ( $row->pa_project_id ) { |
| 61 | $projectIds2[] = $row->pa_project_id; |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | // Combine the two lists |
| 66 | $usedProjectIds = array_values( array_unique( array_merge( $projectIds1, $projectIds2 ) ) ); |
| 67 | |
| 68 | // Protect against lack of projects in some environments - T219935 |
| 69 | if ( !count( $usedProjectIds ) ) { |
| 70 | $this->output( "No projects found.\nDone.\n" ); |
| 71 | return; |
| 72 | } |
| 73 | |
| 74 | if ( $this->hasOption( 'dry-run' ) ) { |
| 75 | $finalCount = count( $usedProjectIds ); |
| 76 | } else { |
| 77 | $this->output( "Purging unused projects from page_assessments_projects...\n" ); |
| 78 | // Delete all the projects that aren't used in any current assessments |
| 79 | // and aren't parents of other projects. |
| 80 | $conds = $dbr->expr( 'pap_project_id', '!=', $usedProjectIds ); |
| 81 | $dbw->newDeleteQueryBuilder() |
| 82 | ->deleteFrom( 'page_assessments_projects' ) |
| 83 | ->where( $conds ) |
| 84 | ->caller( __METHOD__ ) |
| 85 | ->execute(); |
| 86 | $this->output( "Done.\n" ); |
| 87 | $this->waitForReplication(); |
| 88 | // Recount all the projects |
| 89 | $finalCount = $dbr->newSelectQueryBuilder() |
| 90 | ->select( 'COUNT(*)' ) |
| 91 | ->from( 'page_assessments_projects' ) |
| 92 | ->caller( __METHOD__ ) |
| 93 | ->fetchField(); |
| 94 | } |
| 95 | $this->output( "Projects after purge: $finalCount\n" ); |
| 96 | } |
| 97 | |
| 98 | } |
| 99 | |
| 100 | $maintClass = PurgeUnusedProjects::class; |
| 101 | require_once RUN_MAINTENANCE_IF_MAIN; |