MediaWiki master
fixDoubleRedirects.php
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1<?php
29
30require_once __DIR__ . '/Maintenance.php';
31
38 public function __construct() {
39 parent::__construct();
40 $this->addDescription( 'Script to fix double redirects' );
41 $this->addOption( 'async', 'Don\'t fix anything directly, just queue the jobs' );
42 $this->addOption( 'title', 'Fix only redirects pointing to this page', false, true );
43 $this->addOption( 'dry-run', 'Perform a dry run, fix nothing' );
44 }
45
46 public function execute() {
47 $async = $this->hasOption( 'async' );
48 $dryrun = $this->hasOption( 'dry-run' );
49
50 if ( $this->hasOption( 'title' ) ) {
51 $title = Title::newFromText( $this->getOption( 'title' ) );
52 if ( !$title || !$title->isRedirect() ) {
53 $this->fatalError( $title->getPrefixedText() . " is not a redirect!\n" );
54 }
55 } else {
56 $title = null;
57 }
58
59 $dbr = $this->getReplicaDB();
60
61 // See also SpecialDoubleRedirects
62 // TODO: support batch querying
63 $queryBuilder = $dbr->newSelectQueryBuilder()
64 ->select( [
65 'pa_namespace' => 'pa.page_namespace',
66 'pa_title' => 'pa.page_title',
67 'pb_namespace' => 'pb.page_namespace',
68 'pb_title' => 'pb.page_title',
69 ] )
70 ->from( 'redirect' )
71 ->join( 'page', 'pa', 'rd_from = pa.page_id' )
72 ->join( 'page', 'pb', [ 'rd_namespace = pb.page_namespace', 'rd_title = pb.page_title' ] )
73 // T42352
74 ->where( [ 'rd_interwiki' => '', 'pb.page_is_redirect' => 1 ] );
75
76 if ( $title != null ) {
77 $queryBuilder->andWhere( [
78 'pb.page_namespace' => $title->getNamespace(),
79 'pb.page_title' => $title->getDBkey()
80 ] );
81 }
82 $res = $queryBuilder->caller( __METHOD__ )->fetchResultSet();
83
84 if ( !$res->numRows() ) {
85 $this->output( "No double redirects found.\n" );
86
87 return;
88 }
89
90 $jobs = [];
91 $processedTitles = "\n";
92 $n = 0;
93 $services = $this->getServiceContainer();
94 foreach ( $res as $row ) {
95 $titleA = Title::makeTitle( $row->pa_namespace, $row->pa_title );
96 $titleB = Title::makeTitle( $row->pb_namespace, $row->pb_title );
97 if ( !$titleA->canExist() || !$titleB->canExist() ) {
98 $this->error( "Cannot fix redirect from" .
99 ( $titleA->canExist() ? "" : " invalid" ) . " title " . $titleA->getPrefixedText()
100 . " to new" .
101 ( $titleB->canExist() ? "" : " invalid" ) . " target " . $titleB->getPrefixedText()
102 . "\n"
103 );
104 continue;
105 }
106
107 $processedTitles .= "* [[$titleA]]\n";
108
110 $titleA,
111 [
112 'reason' => 'maintenance',
113 'redirTitle' => $titleB->getPrefixedDBkey()
114 ],
115 $services->getRevisionLookup(),
116 $services->getMagicWordFactory(),
117 $services->getWikiPageFactory()
118 );
119
120 if ( !$async ) {
121 $success = ( $dryrun ? true : $job->run() );
122 if ( !$success ) {
123 $this->error( "Error fixing " . $titleA->getPrefixedText()
124 . ": " . $job->getLastError() . "\n" );
125 }
126 } else {
127 $jobs[] = $job;
128 if ( count( $jobs ) > DoubleRedirectJob::MAX_DR_JOBS_COUNTER ) {
129 $this->queueJobs( $jobs, $dryrun );
130 $jobs = [];
131 }
132 }
133
134 if ( ++$n % 100 == 0 ) {
135 $this->output( "$n...\n" );
136 }
137 }
138
139 if ( count( $jobs ) ) {
140 $this->queueJobs( $jobs, $dryrun );
141 }
142 $this->output( "$n double redirects processed" . $processedTitles . "\n" );
143 }
144
145 protected function queueJobs( $jobs, $dryrun = false ) {
146 $this->output( "Queuing batch of " . count( $jobs ) . " double redirects.\n" );
147 $this->getServiceContainer()->getJobQueueGroup()->push( $dryrun ? [] : $jobs );
148 }
149}
150
151$maintClass = FixDoubleRedirects::class;
152require_once RUN_MAINTENANCE_IF_MAIN;
Fix any double redirects after moving a page.
Maintenance script that fixes double redirects.
queueJobs( $jobs, $dryrun=false)
__construct()
Default constructor.
execute()
Do the actual work.
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
error( $err, $die=0)
Throw an error to the user.
output( $out, $channel=null)
Throw some output to the user.
hasOption( $name)
Checks to see if a particular option was set.
getServiceContainer()
Returns the main service container.
addDescription( $text)
Set the description text.
addOption( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
getOption( $name, $default=null)
Get an option, or return the default.
fatalError( $msg, $exitCode=1)
Output a message and terminate the current script.
Represents a title within MediaWiki.
Definition Title.php:78
if(count( $args)< 1) $job