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| 1 | <?php |
| 2 | /** |
| 3 | * Clean up user preferences from the database. |
| 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 | * @author TyA <tya.wiki@gmail.com> |
| 22 | * @author Chad <chad@wikimedia.org> |
| 23 | * @see https://phabricator.wikimedia.org/T32976 |
| 24 | * @ingroup Maintenance |
| 25 | */ |
| 26 | |
| 27 | require_once __DIR__ . '/Maintenance.php'; |
| 28 | |
| 29 | use MediaWiki\MainConfigNames; |
| 30 | use MediaWiki\User\Options\UserOptionsLookup; |
| 31 | use Wikimedia\Rdbms\IExpression; |
| 32 | use Wikimedia\Rdbms\LikeValue; |
| 33 | |
| 34 | /** |
| 35 | * Maintenance script that removes unused preferences from the database. |
| 36 | * |
| 37 | * @ingroup Maintenance |
| 38 | */ |
| 39 | class CleanupPreferences extends Maintenance { |
| 40 | public function __construct() { |
| 41 | parent::__construct(); |
| 42 | $this->addDescription( 'Clean up hidden preferences or removed preferences' ); |
| 43 | $this->setBatchSize( 50 ); |
| 44 | $this->addOption( 'dry-run', 'Print debug info instead of actually deleting' ); |
| 45 | $this->addOption( 'hidden', 'Drop hidden preferences ($wgHiddenPrefs)' ); |
| 46 | $this->addOption( 'unknown', |
| 47 | 'Drop unknown preferences (not in $wgDefaultUserOptions or prefixed with "userjs-")' ); |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * We will do this in three passes |
| 52 | * 1) The easiest is to drop the hidden preferences from the database. We |
| 53 | * don't actually want them |
| 54 | * 2) Drop preference keys that we don't know about. They could've been |
| 55 | * removed from core, provided by a now-disabled extension, or the result |
| 56 | * of a bug. We don't want them. |
| 57 | */ |
| 58 | public function execute() { |
| 59 | $dbr = $this->getReplicaDB(); |
| 60 | $hidden = $this->hasOption( 'hidden' ); |
| 61 | $unknown = $this->hasOption( 'unknown' ); |
| 62 | |
| 63 | if ( !$hidden && !$unknown ) { |
| 64 | $this->output( "Did not select one of --hidden, --unknown, exiting\n" ); |
| 65 | return; |
| 66 | } |
| 67 | |
| 68 | // Remove hidden prefs. Iterate over them to avoid the IN on a large table |
| 69 | if ( $hidden ) { |
| 70 | $hiddenPrefs = $this->getConfig()->get( MainConfigNames::HiddenPrefs ); |
| 71 | if ( !$hiddenPrefs ) { |
| 72 | $this->output( "No hidden preferences, skipping\n" ); |
| 73 | } |
| 74 | foreach ( $hiddenPrefs as $hiddenPref ) { |
| 75 | $this->deleteByWhere( |
| 76 | $dbr, |
| 77 | 'Dropping hidden preferences', |
| 78 | [ 'up_property' => $hiddenPref ] |
| 79 | ); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | // Remove unknown preferences. Special-case 'userjs-' as we can't control those names. |
| 84 | if ( $unknown ) { |
| 85 | $defaultUserOptions = $this->getServiceContainer()->getUserOptionsLookup()->getDefaultOptions( null ); |
| 86 | $where = [ |
| 87 | $dbr->expr( 'up_property', IExpression::NOT_LIKE, |
| 88 | new LikeValue( 'userjs-', $dbr->anyString() ) ), |
| 89 | $dbr->expr( 'up_property', IExpression::NOT_LIKE, |
| 90 | new LikeValue( UserOptionsLookup::LOCAL_EXCEPTION_SUFFIX, $dbr->anyString() ) ), |
| 91 | $dbr->expr( 'up_property', '!=', array_keys( $defaultUserOptions ) ), |
| 92 | ]; |
| 93 | // Allow extensions to add to the where clause to prevent deletion of their own prefs. |
| 94 | $this->getHookRunner()->onDeleteUnknownPreferences( $where, $dbr ); |
| 95 | $this->deleteByWhere( $dbr, 'Dropping unknown preferences', $where ); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | private function deleteByWhere( $dbr, $startMessage, $where ) { |
| 100 | $this->output( $startMessage . "...\n" ); |
| 101 | $dryRun = $this->hasOption( 'dry-run' ); |
| 102 | |
| 103 | $iterator = new BatchRowIterator( |
| 104 | $dbr, |
| 105 | 'user_properties', |
| 106 | [ 'up_user', 'up_property' ], |
| 107 | $this->getBatchSize() |
| 108 | ); |
| 109 | if ( $dryRun ) { |
| 110 | $iterator->setFetchColumns( [ 'up_user', 'up_property', 'up_value' ] ); |
| 111 | } else { |
| 112 | $iterator->setFetchColumns( [ 'up_user', 'up_property' ] ); |
| 113 | } |
| 114 | $iterator->addConditions( $where ); |
| 115 | $iterator->setCaller( __METHOD__ ); |
| 116 | |
| 117 | $dbw = $this->getPrimaryDB(); |
| 118 | $total = 0; |
| 119 | foreach ( $iterator as $batch ) { |
| 120 | $numRows = count( $batch ); |
| 121 | $total += $numRows; |
| 122 | // Progress or something |
| 123 | $this->output( "..doing $numRows entries\n" ); |
| 124 | |
| 125 | // Delete our batch, then wait |
| 126 | $deleteWhere = []; |
| 127 | foreach ( $batch as $row ) { |
| 128 | if ( $dryRun ) { |
| 129 | $this->output( |
| 130 | " DRY RUN, would drop: " . |
| 131 | "[up_user] => '{$row->up_user}' " . |
| 132 | "[up_property] => '{$row->up_property}' " . |
| 133 | "[up_value] => '{$row->up_value}'\n" |
| 134 | ); |
| 135 | continue; |
| 136 | } |
| 137 | $deleteWhere[$row->up_user][$row->up_property] = true; |
| 138 | } |
| 139 | if ( $deleteWhere && !$dryRun ) { |
| 140 | $dbw->newDeleteQueryBuilder() |
| 141 | ->deleteFrom( 'user_properties' ) |
| 142 | ->where( $dbw->makeWhereFrom2d( $deleteWhere, 'up_user', 'up_property' ) ) |
| 143 | ->caller( __METHOD__ )->execute(); |
| 144 | |
| 145 | $this->waitForReplication(); |
| 146 | } |
| 147 | } |
| 148 | $this->output( "DONE! (handled $total entries)\n" ); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | $maintClass = CleanupPreferences::class; // Tells it to run the class |
| 153 | require_once RUN_MAINTENANCE_IF_MAIN; |