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