MediaWiki REL1_30
fixTimestamps.php
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1<?php
28require_once __DIR__ . '/Maintenance.php';
29
37 public function __construct() {
38 parent::__construct();
39 $this->addDescription( '' );
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 = $this->getDB( 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 = [];
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="
121 . "DATE_FORMAT(DATE_ADD(rev_timestamp, INTERVAL $fixup SECOND), '%Y%m%d%H%i%s') " .
122 "WHERE rev_id IN (" . $dbw->makeList( $badRevs ) . ')';
123 $dbw->query( $sql, __METHOD__ );
124 $this->output( "Done\n" );
125 }
126}
127
128$maintClass = "FixTimestamps";
129require_once RUN_MAINTENANCE_IF_MAIN;
wfTimestamp( $outputtype=TS_UNIX, $ts=0)
Get a timestamp string in one of various formats.
Maintenance script that fixes timestamp corruption caused by one or more webservers temporarily being...
execute()
Do the actual work.
__construct()
Default constructor.
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
addArg( $arg, $description, $required=true)
Add some args that are needed.
getDB( $db, $groups=[], $wiki=false)
Returns a database to be used by current maintenance script.
getArg( $argId=0, $default=null)
Get an argument.
addDescription( $text)
Set the description text.
$res
Definition database.txt:21
design txt This is a brief overview of the new design More thorough and up to date information is available on the documentation wiki at etc Handles the details of getting and saving to the user table of the and dealing with sessions and cookies OutputPage Encapsulates the entire HTML page that will be sent in response to any server request It is used by calling its functions to add in any and then calling output() to send it all. It could be easily changed to send incrementally if that becomes useful
do that in ParserLimitReportFormat instead use this to modify the parameters of the image all existing parser cache entries will be invalid To avoid you ll need to handle that somehow(e.g. with the RejectParserCacheValue hook) because MediaWiki won 't do it for you. & $defaults error
Definition hooks.txt:2581
$maintClass
require_once RUN_MAINTENANCE_IF_MAIN
const DB_MASTER
Definition defines.php:26