MediaWiki  1.23.8
fixTimestamps.php
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1 <?php
28 require_once __DIR__ . '/Maintenance.php';
29 
36 class FixTimestamps extends Maintenance {
37  public function __construct() {
38  parent::__construct();
39  $this->mDescription = "";
40  $this->addArg( 'offset', '' );
41  $this->addArg( 'start', 'Starting timestamp' );
42  $this->addArg( 'end', 'Ending timestamp' );
43  }
44 
45  public function execute() {
46  $offset = $this->getArg( 0 ) * 3600;
47  $start = $this->getArg( 1 );
48  $end = $this->getArg( 2 );
49  $grace = 60; // maximum normal clock offset
50 
51  # Find bounding revision IDs
52  $dbw = wfGetDB( DB_MASTER );
53  $revisionTable = $dbw->tableName( 'revision' );
54  $res = $dbw->query( "SELECT MIN(rev_id) as minrev, MAX(rev_id) as maxrev FROM $revisionTable " .
55  "WHERE rev_timestamp BETWEEN '{$start}' AND '{$end}'", __METHOD__ );
56  $row = $dbw->fetchObject( $res );
57 
58  if ( is_null( $row->minrev ) ) {
59  $this->error( "No revisions in search period.", true );
60  }
61 
62  $minRev = $row->minrev;
63  $maxRev = $row->maxrev;
64 
65  # Select all timestamps and IDs
66  $sql = "SELECT rev_id, rev_timestamp FROM $revisionTable " .
67  "WHERE rev_id BETWEEN $minRev AND $maxRev";
68  if ( $offset > 0 ) {
69  $sql .= " ORDER BY rev_id DESC";
70  $expectedSign = -1;
71  } else {
72  $expectedSign = 1;
73  }
74 
75  $res = $dbw->query( $sql, __METHOD__ );
76 
77  $lastNormal = 0;
78  $badRevs = array();
79  $numGoodRevs = 0;
80 
81  foreach ( $res as $row ) {
82  $timestamp = wfTimestamp( TS_UNIX, $row->rev_timestamp );
83  $delta = $timestamp - $lastNormal;
84  $sign = $delta == 0 ? 0 : $delta / abs( $delta );
85  if ( $sign == 0 || $sign == $expectedSign ) {
86  // Monotonic change
87  $lastNormal = $timestamp;
88  ++ $numGoodRevs;
89  continue;
90  } elseif ( abs( $delta ) <= $grace ) {
91  // Non-monotonic change within grace interval
92  ++ $numGoodRevs;
93  continue;
94  } else {
95  // Non-monotonic change larger than grace interval
96  $badRevs[] = $row->rev_id;
97  }
98  }
99 
100  $numBadRevs = count( $badRevs );
101  if ( $numBadRevs > $numGoodRevs ) {
102  $this->error(
103  "The majority of revisions in the search interval are marked as bad.
104 
105  Are you sure the offset ($offset) has the right sign? Positive means the clock
106  was incorrectly set forward, negative means the clock was incorrectly set back.
107 
108  If the offset is right, then increase the search interval until there are enough
109  good revisions to provide a majority reference.", true );
110  } elseif ( $numBadRevs == 0 ) {
111  $this->output( "No bad revisions found.\n" );
112  exit( 0 );
113  }
114 
115  $this->output( sprintf( "Fixing %d revisions (%.2f%% of revisions in search interval)\n",
116  $numBadRevs, $numBadRevs / ( $numGoodRevs + $numBadRevs ) * 100 ) );
117 
118  $fixup = -$offset;
119  $sql = "UPDATE $revisionTable " .
120  "SET rev_timestamp=DATE_FORMAT(DATE_ADD(rev_timestamp, INTERVAL $fixup SECOND), '%Y%m%d%H%i%s') " .
121  "WHERE rev_id IN (" . $dbw->makeList( $badRevs ) . ')';
122  $dbw->query( $sql, __METHOD__ );
123  $this->output( "Done\n" );
124  }
125 }
126 
127 $maintClass = "FixTimestamps";
128 require_once RUN_MAINTENANCE_IF_MAIN;
DB_MASTER
const DB_MASTER
Definition: Defines.php:56
php
skin txt MediaWiki includes four core it has been set as the default in MediaWiki since the replacing Monobook it had been been the default skin since before being replaced by Vector largely rewritten in while keeping its appearance Several legacy skins were removed in the as the burden of supporting them became too heavy to bear Those in etc for skin dependent CSS etc for skin dependent JavaScript These can also be customised on a per user by etc This feature has led to a wide variety of user styles becoming that gallery is a good place to ending in php
Definition: skin.txt:62
wfGetDB
& wfGetDB( $db, $groups=array(), $wiki=false)
Get a Database object.
Definition: GlobalFunctions.php:3659
$timestamp
if( $limit) $timestamp
Definition: importImages.php:104
wfTimestamp
wfTimestamp( $outputtype=TS_UNIX, $ts=0)
Get a timestamp string in one of various formats.
Definition: GlobalFunctions.php:2483
RUN_MAINTENANCE_IF_MAIN
require_once RUN_MAINTENANCE_IF_MAIN
Definition: maintenance.txt:50
Maintenance
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: maintenance.txt:39
FixTimestamps\__construct
__construct()
Default constructor.
Definition: fixTimestamps.php:37
array
the array() calling protocol came about after MediaWiki 1.4rc1.
List of Api Query prop modules.
FixTimestamps\execute
execute()
Do the actual work.
Definition: fixTimestamps.php:45
TS_UNIX
const TS_UNIX
Unix time - the number of seconds since 1970-01-01 00:00:00 UTC.
Definition: GlobalFunctions.php:2426
Maintenance\addArg
addArg( $arg, $description, $required=true)
Add some args that are needed.
Definition: Maintenance.php:207
as
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
$maintClass
$maintClass
Definition: fixTimestamps.php:127
Maintenance\error
error( $err, $die=0)
Throw an error to the user.
Definition: Maintenance.php:333
Maintenance\output
output( $out, $channel=null)
Throw some output to the user.
Definition: Maintenance.php:314
Maintenance\getArg
getArg( $argId=0, $default=null)
Get an argument.
Definition: Maintenance.php:246
$res
$res
Definition: database.txt:21
FixTimestamps
Maintenance script that fixes timestamp corruption caused by one or more webservers temporarily being...
Definition: fixTimestamps.php:36