MediaWiki  1.28.0
fixDoubleRedirects.php
Go to the documentation of this file.
1 <?php
28 require_once __DIR__ . '/Maintenance.php';
29 
36  public function __construct() {
37  parent::__construct();
38  $this->addDescription( 'Script to fix double redirects' );
39  $this->addOption( 'async', 'Don\'t fix anything directly, just queue the jobs' );
40  $this->addOption( 'title', 'Fix only redirects pointing to this page', false, true );
41  $this->addOption( 'dry-run', 'Perform a dry run, fix nothing' );
42  }
43 
44  public function execute() {
45  $async = $this->getOption( 'async', false );
46  $dryrun = $this->getOption( 'dry-run', false );
47 
48  if ( $this->hasOption( 'title' ) ) {
49  $title = Title::newFromText( $this->getOption( 'title' ) );
50  if ( !$title || !$title->isRedirect() ) {
51  $this->error( $title->getPrefixedText() . " is not a redirect!\n", true );
52  }
53  } else {
54  $title = null;
55  }
56 
57  $dbr = $this->getDB( DB_REPLICA );
58 
59  // See also SpecialDoubleRedirects
60  $tables = [
61  'redirect',
62  'pa' => 'page',
63  'pb' => 'page',
64  ];
65  $fields = [
66  'pa.page_namespace AS pa_namespace',
67  'pa.page_title AS pa_title',
68  'pb.page_namespace AS pb_namespace',
69  'pb.page_title AS pb_title',
70  ];
71  $conds = [
72  'rd_from = pa.page_id',
73  'rd_namespace = pb.page_namespace',
74  'rd_title = pb.page_title',
75  'rd_interwiki IS NULL OR rd_interwiki = ' . $dbr->addQuotes( '' ), // bug 40352
76  'pb.page_is_redirect' => 1,
77  ];
78 
79  if ( $title != null ) {
80  $conds['pb.page_namespace'] = $title->getNamespace();
81  $conds['pb.page_title'] = $title->getDBkey();
82  }
83  // TODO: support batch querying
84 
85  $res = $dbr->select( $tables, $fields, $conds, __METHOD__ );
86 
87  if ( !$res->numRows() ) {
88  $this->output( "No double redirects found.\n" );
89 
90  return;
91  }
92 
93  $jobs = [];
94  $processedTitles = "\n";
95  $n = 0;
96  foreach ( $res as $row ) {
97  $titleA = Title::makeTitle( $row->pa_namespace, $row->pa_title );
98  $titleB = Title::makeTitle( $row->pb_namespace, $row->pb_title );
99 
100  $processedTitles .= "* [[$titleA]]\n";
101 
102  $job = new DoubleRedirectJob( $titleA, [
103  'reason' => 'maintenance',
104  'redirTitle' => $titleB->getPrefixedDBkey()
105  ] );
106 
107  if ( !$async ) {
108  $success = ( $dryrun ? true : $job->run() );
109  if ( !$success ) {
110  $this->error( "Error fixing " . $titleA->getPrefixedText()
111  . ": " . $job->getLastError() . "\n" );
112  }
113  } else {
114  $jobs[] = $job;
115  // @todo FIXME: Hardcoded constant 10000 copied from DoubleRedirectJob class
116  if ( count( $jobs ) > 10000 ) {
117  $this->queueJobs( $jobs, $dryrun );
118  $jobs = [];
119  }
120  }
121 
122  if ( ++$n % 100 == 0 ) {
123  $this->output( "$n...\n" );
124  }
125  }
126 
127  if ( count( $jobs ) ) {
128  $this->queueJobs( $jobs, $dryrun );
129  }
130  $this->output( "$n double redirects processed" . $processedTitles . "\n" );
131  }
132 
133  protected function queueJobs( $jobs, $dryrun = false ) {
134  $this->output( "Queuing batch of " . count( $jobs ) . " double redirects.\n" );
135  JobQueueGroup::singleton()->push( $dryrun ? [] : $jobs );
136  }
137 }
138 
139 $maintClass = "FixDoubleRedirects";
140 require_once RUN_MAINTENANCE_IF_MAIN;
$success
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: maintenance.txt:39
getDB($db, $groups=[], $wiki=false)
Returns a database to be used by current maintenance script.
hasOption($name)
Checks to see if a particular param exists.
static newFromText($text, $defaultNamespace=NS_MAIN)
Create a new Title from text, such as what one would find in a link.
Definition: Title.php:262
require_once RUN_MAINTENANCE_IF_MAIN
Definition: maintenance.txt:50
this hook is for auditing only RecentChangesLinked and Watchlist RecentChangesLinked and Watchlist e g Watchlist & $tables
Definition: hooks.txt:1007
null means default in associative array with keys and values unescaped Should be merged with default with a value of false meaning to suppress the attribute in associative array with keys and values unescaped noclasses just before the function returns a value If you return true
Definition: hooks.txt:1936
addOption($name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
$res
Definition: database.txt:21
queueJobs($jobs, $dryrun=false)
namespace and then decline to actually register it file or subcat img or subcat $title
Definition: hooks.txt:953
addDescription($text)
Set the description text.
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
Definition: distributors.txt:9
getOption($name, $default=null)
Get an option, or return the default.
output($out, $channel=null)
Throw some output to the user.
static singleton($wiki=false)
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
if(count($args)< 1) $job
error($err, $die=0)
Throw an error to the user.
const DB_REPLICA
Definition: defines.php:22
static makeTitle($ns, $title, $fragment= '', $interwiki= '')
Create a new Title from a namespace index and a DB key.
Definition: Title.php:511
Maintenance script that fixes double redirects.
Job to fix double redirects after moving a page.