1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
<?php
/**
* Populates the rev_len and ar_len fields for old revisions created
* before MW 1.10.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Maintenance
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Maintenance script that populates the rev_len and ar_len fields
* for old revisions created before MW 1.10.
*
* @ingroup Maintenance
*/
class PopulateRevisionLength extends LoggedUpdateMaintenance {
public function __construct() {
parent::__construct();
$this->mDescription = "Populates the rev_len and ar_len fields";
$this->setBatchSize( 200 );
}
protected function getUpdateKey() {
return 'populate rev_len and ar_len';
}
public function doDBUpdates() {
$db = $this->getDB( DB_MASTER );
if ( !$db->tableExists( 'revision' ) ) {
$this->error( "revision table does not exist", true );
} elseif ( !$db->tableExists( 'archive' ) ) {
$this->error( "archive table does not exist", true );
} elseif ( !$db->fieldExists( 'revision', 'rev_len', __METHOD__ ) ) {
$this->output( "rev_len column does not exist\n\n", true );
return false;
}
$this->output( "Populating rev_len column\n" );
$rev = $this->doLenUpdates( 'revision', 'rev_id', 'rev', Revision::selectFields() );
$this->output( "Populating ar_len column\n" );
$ar = $this->doLenUpdates( 'archive', 'ar_id', 'ar', Revision::selectArchiveFields() );
$this->output( "rev_len and ar_len population complete "
. "[$rev revision rows, $ar archive rows].\n" );
return true;
}
/**
* @param string $table
* @param string $idCol
* @param string $prefix
* @param array $fields
* @return int
*/
protected function doLenUpdates( $table, $idCol, $prefix, $fields ) {
$db = $this->getDB( DB_MASTER );
$start = $db->selectField( $table, "MIN($idCol)", false, __METHOD__ );
$end = $db->selectField( $table, "MAX($idCol)", false, __METHOD__ );
if ( !$start || !$end ) {
$this->output( "...$table table seems to be empty.\n" );
return 0;
}
# Do remaining chunks
$blockStart = intval( $start );
$blockEnd = intval( $start ) + $this->mBatchSize - 1;
$count = 0;
while ( $blockStart <= $end ) {
$this->output( "...doing $idCol from $blockStart to $blockEnd\n" );
$res = $db->select(
$table,
$fields,
array(
"$idCol >= $blockStart",
"$idCol <= $blockEnd",
"{$prefix}_len IS NULL"
),
__METHOD__
);
$db->begin( __METHOD__ );
# Go through and update rev_len from these rows.
foreach ( $res as $row ) {
if ( $this->upgradeRow( $row, $table, $idCol, $prefix ) ) {
$count++;
}
}
$db->commit( __METHOD__ );
$blockStart += $this->mBatchSize;
$blockEnd += $this->mBatchSize;
wfWaitForSlaves();
}
return $count;
}
/**
* @param stdClass $row
* @param string $table
* @param string $idCol
* @param string $prefix
* @return bool
*/
protected function upgradeRow( $row, $table, $idCol, $prefix ) {
$db = $this->getDB( DB_MASTER );
$rev = ( $table === 'archive' )
? Revision::newFromArchiveRow( $row )
: new Revision( $row );
$content = $rev->getContent();
if ( !$content ) {
# This should not happen, but sometimes does (bug 20757)
$id = $row->$idCol;
$this->output( "Content of $table $id unavailable!\n" );
return false;
}
# Update the row...
$db->update( $table,
array( "{$prefix}_len" => $content->getSize() ),
array( $idCol => $row->$idCol ),
__METHOD__
);
return true;
}
}
$maintClass = "PopulateRevisionLength";
require_once RUN_MAINTENANCE_IF_MAIN;
|
