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1<?php
2
3use MediaWiki\Maintenance\LoggedUpdateMaintenance;
4
5// @codeCoverageIgnoreStart
6require_once __DIR__ . '/Maintenance.php';
7// @codeCoverageIgnoreEnd
8
9/**
10 * Maintenance script that merges the revision_actor_temp table into the
11 * revision table.
12 *
13 * @ingroup Maintenance
14 * @since 1.37
15 */
16class MigrateRevisionActorTemp extends LoggedUpdateMaintenance {
17    public function __construct() {
18        parent::__construct();
19        $this->addDescription(
20            'Copy the data from the revision_actor_temp into the revision table'
21        );
22        $this->addOption(
23            'sleep',
24            'Sleep time (in seconds) between every batch. Default: 0',
25            false,
26            true
27        );
28        $this->addOption( 'start', 'Start after this rev_id', false, true );
29    }
30
31    protected function getUpdateKey() {
32        return __CLASS__;
33    }
34
35    protected function doDBUpdates() {
36        $batchSize = $this->getBatchSize();
37
38        $dbw = $this->getDB( DB_PRIMARY );
39        if ( !$dbw->fieldExists( 'revision', 'rev_actor', __METHOD__ ) ) {
40            $this->output( "Run update.php to create rev_actor.\n" );
41            return false;
42        }
43        if ( !$dbw->tableExists( 'revision_actor_temp', __METHOD__ ) ) {
44            $this->output( "revision_actor_temp does not exist, so nothing to do.\n" );
45            return true;
46        }
47
48        $this->output( "Merging the revision_actor_temp table into the revision table...\n" );
49        $conds = [];
50        $updated = 0;
51        $start = (int)$this->getOption( 'start', 0 );
52        if ( $start > 0 ) {
53            $conds[] = $dbw->expr( 'rev_id', '>=', $start );
54        }
55        while ( true ) {
56            $res = $dbw->newSelectQueryBuilder()
57                ->select( [ 'rev_id', 'rev_actor', 'revactor_actor' ] )
58                ->from( 'revision' )
59                ->join( 'revision_actor_temp', null, 'rev_id=revactor_rev' )
60                ->where( $conds )
61                ->limit( $batchSize )
62                ->orderBy( 'rev_id' )
63                ->caller( __METHOD__ )
64                ->fetchResultSet();
65
66            $numRows = $res->numRows();
67
68            $last = null;
69            foreach ( $res as $row ) {
70                $last = $row->rev_id;
71                if ( !$row->rev_actor ) {
72                    $dbw->newUpdateQueryBuilder()
73                        ->update( 'revision' )
74                        ->set( [ 'rev_actor' => $row->revactor_actor ] )
75                        ->where( [ 'rev_id' => $row->rev_id ] )
76                        ->caller( __METHOD__ )->execute();
77                    $updated += $dbw->affectedRows();
78                } elseif ( $row->rev_actor !== $row->revactor_actor ) {
79                    $this->error(
80                        "Revision ID $row->rev_id has rev_actor = $row->rev_actor and "
81                        . "revactor_actor = $row->revactor_actor. Ignoring the latter."
82                    );
83                }
84            }
85
86            if ( $numRows < $batchSize ) {
87                // We must have reached the end
88                break;
89            }
90
91            // @phan-suppress-next-line PhanTypeSuspiciousStringExpression last is not-null when used
92            $this->output( "... rev_id=$last, updated $updated\n" );
93            $conds = [ $dbw->expr( 'rev_id', '>', $last ) ];
94
95            // Sleep between batches for replication to catch up
96            $this->waitForReplication();
97            $sleep = (int)$this->getOption( 'sleep', 0 );
98            if ( $sleep > 0 ) {
99                sleep( $sleep );
100            }
101        }
102
103        $this->output(
104            "Completed merge of revision_actor into the revision table, "
105            . "$updated rows updated.\n"
106        );
107
108        return true;
109    }
110
111}
112
113// @codeCoverageIgnoreStart
114$maintClass = MigrateRevisionActorTemp::class;
115require_once RUN_MAINTENANCE_IF_MAIN;
116// @codeCoverageIgnoreEnd