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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\RenameUser; |
| 4 | |
| 5 | use InvalidArgumentException; |
| 6 | use Job; |
| 7 | use MediaWiki\Config\Config; |
| 8 | use MediaWiki\MainConfigNames; |
| 9 | use MediaWiki\Title\Title; |
| 10 | use Wikimedia\Rdbms\ILBFactory; |
| 11 | |
| 12 | /** |
| 13 | * Custom job to perform updates on tables in busier environments |
| 14 | * |
| 15 | * Job parameters include: |
| 16 | * - table : DB table to update |
| 17 | * - column : The *_user_text column to update |
| 18 | * - oldname : The old user name |
| 19 | * - newname : The new user name |
| 20 | * - count : The expected number of rows to update in this batch |
| 21 | * |
| 22 | * Additionally, one of the following groups of parameters must be set: |
| 23 | * a) The timestamp based rename parameters: |
| 24 | * - timestampColumn : The *_timestamp column |
| 25 | * - minTimestamp : The minimum bound of the timestamp column range for this batch |
| 26 | * - maxTimestamp : The maximum bound of the timestamp column range for this batch |
| 27 | * - uniqueKey : A column that is unique (preferably the PRIMARY KEY) [optional] |
| 28 | * b) The unique key based rename parameters: |
| 29 | * - uniqueKey : A column that is unique (preferably the PRIMARY KEY) |
| 30 | * - keyId : A list of values for this column to determine rows to update for this batch |
| 31 | * |
| 32 | * To avoid some race conditions, the following parameters should be set: |
| 33 | * - userID : The ID of the user to update |
| 34 | * - uidColumn : The *_user_id column |
| 35 | */ |
| 36 | class RenameUserJob extends Job { |
| 37 | /** @var int */ |
| 38 | private $updateRowsPerQuery; |
| 39 | |
| 40 | /** @var ILBFactory */ |
| 41 | private $lbFactory; |
| 42 | |
| 43 | public function __construct( |
| 44 | Title $title, |
| 45 | $params, |
| 46 | Config $config, |
| 47 | ILBFactory $lbFactory |
| 48 | ) { |
| 49 | parent::__construct( 'renameUser', $title, $params ); |
| 50 | |
| 51 | $this->updateRowsPerQuery = $config->get( MainConfigNames::UpdateRowsPerQuery ); |
| 52 | $this->lbFactory = $lbFactory; |
| 53 | } |
| 54 | |
| 55 | public function run() { |
| 56 | $dbw = $this->lbFactory->getPrimaryDatabase(); |
| 57 | $table = $this->params['table']; |
| 58 | $column = $this->params['column']; |
| 59 | |
| 60 | $oldname = $this->params['oldname']; |
| 61 | $newname = $this->params['newname']; |
| 62 | if ( isset( $this->params['userID'] ) ) { |
| 63 | $userID = $this->params['userID']; |
| 64 | $uidColumn = $this->params['uidColumn']; |
| 65 | } else { |
| 66 | $userID = null; |
| 67 | $uidColumn = null; |
| 68 | } |
| 69 | if ( isset( $this->params['timestampColumn'] ) ) { |
| 70 | $timestampColumn = $this->params['timestampColumn']; |
| 71 | $minTimestamp = $this->params['minTimestamp']; |
| 72 | $maxTimestamp = $this->params['maxTimestamp']; |
| 73 | } else { |
| 74 | $timestampColumn = null; |
| 75 | $minTimestamp = null; |
| 76 | $maxTimestamp = null; |
| 77 | } |
| 78 | $uniqueKey = $this->params['uniqueKey'] ?? null; |
| 79 | $keyId = $this->params['keyId'] ?? null; |
| 80 | |
| 81 | # Conditions like "*_user_text = 'x' |
| 82 | $conds = [ $column => $oldname ]; |
| 83 | # If user ID given, add that to condition to avoid rename collisions |
| 84 | if ( $userID !== null ) { |
| 85 | $conds[$uidColumn] = $userID; |
| 86 | } |
| 87 | # Bound by timestamp if given |
| 88 | if ( $timestampColumn !== null ) { |
| 89 | $conds[] = $dbw->expr( $timestampColumn, '>=', $minTimestamp ); |
| 90 | $conds[] = $dbw->expr( $timestampColumn, '<=', $maxTimestamp ); |
| 91 | # Bound by unique key if given (B/C) |
| 92 | } elseif ( $uniqueKey !== null && $keyId !== null ) { |
| 93 | $conds[$uniqueKey] = $keyId; |
| 94 | } else { |
| 95 | throw new InvalidArgumentException( 'Expected ID batch or time range' ); |
| 96 | } |
| 97 | |
| 98 | # Actually update the rows for this job... |
| 99 | if ( $uniqueKey !== null ) { |
| 100 | // Select the rows to update by PRIMARY KEY |
| 101 | $ids = $dbw->newSelectQueryBuilder() |
| 102 | ->select( $uniqueKey ) |
| 103 | ->from( $table ) |
| 104 | ->where( $conds ) |
| 105 | ->caller( __METHOD__ )->fetchFieldValues(); |
| 106 | # Update these rows by PRIMARY KEY to avoid replica lag |
| 107 | foreach ( array_chunk( $ids, $this->updateRowsPerQuery ) as $batch ) { |
| 108 | $dbw->commit( __METHOD__, 'flush' ); |
| 109 | $this->lbFactory->waitForReplication(); |
| 110 | |
| 111 | $dbw->newUpdateQueryBuilder() |
| 112 | ->update( $table ) |
| 113 | ->set( [ $column => $newname ] ) |
| 114 | ->where( [ $column => $oldname, $uniqueKey => $batch ] ) |
| 115 | ->caller( __METHOD__ )->execute(); |
| 116 | } |
| 117 | } else { |
| 118 | # Update the chunk of rows directly |
| 119 | $dbw->newUpdateQueryBuilder() |
| 120 | ->update( $table ) |
| 121 | ->set( [ $column => $newname ] ) |
| 122 | ->where( $conds ) |
| 123 | ->caller( __METHOD__ )->execute(); |
| 124 | } |
| 125 | |
| 126 | return true; |
| 127 | } |
| 128 | } |
| 129 | /** @deprecated class alias since 1.43 */ |
| 130 | class_alias( RenameUserJob::class, 'RenameUserJob' ); |