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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
<?php
/**
* A repository that stores files in the local filesystem and registers them
* in the wiki's own database. This is the most commonly used repository class.
* @ingroup FileRepo
*/
class LocalRepo extends FSRepo {
var $fileFactory = array( 'LocalFile', 'newFromTitle' );
var $oldFileFactory = array( 'OldLocalFile', 'newFromTitle' );
var $fileFromRowFactory = array( 'LocalFile', 'newFromRow' );
var $oldFileFromRowFactory = array( 'OldLocalFile', 'newFromRow' );
function newFileFromRow( $row ) {
if ( isset( $row->img_name ) ) {
return call_user_func( $this->fileFromRowFactory, $row, $this );
} elseif ( isset( $row->oi_name ) ) {
return call_user_func( $this->oldFileFromRowFactory, $row, $this );
} else {
throw new MWException( __METHOD__.': invalid row' );
}
}
function newFromArchiveName( $title, $archiveName ) {
return OldLocalFile::newFromArchiveName( $title, $this, $archiveName );
}
/**
* Delete files in the deleted directory if they are not referenced in the
* filearchive table. This needs to be done in the repo because it needs to
* interleave database locks with file operations, which is potentially a
* remote operation.
* @return FileRepoStatus
*/
function cleanupDeletedBatch( $storageKeys ) {
$root = $this->getZonePath( 'deleted' );
$dbw = $this->getMasterDB();
$status = $this->newGood();
$storageKeys = array_unique($storageKeys);
foreach ( $storageKeys as $key ) {
$hashPath = $this->getDeletedHashPath( $key );
$path = "$root/$hashPath$key";
$dbw->begin();
$inuse = $dbw->selectField( 'filearchive', '1',
array( 'fa_storage_group' => 'deleted', 'fa_storage_key' => $key ),
__METHOD__, array( 'FOR UPDATE' ) );
if( !$inuse ) {
$sha1 = substr( $key, 0, strcspn( $key, '.' ) );
$ext = substr( $key, strcspn($key,'.') + 1 );
$ext = File::normalizeExtension($ext);
$inuse = $dbw->selectField( 'oldimage', '1',
array( 'oi_sha1' => $sha1,
'oi_archive_name ' . $dbw->buildLike( $dbw->anyString(), ".$ext" ),
$dbw->bitAnd('oi_deleted', File::DELETED_FILE) => File::DELETED_FILE ),
__METHOD__, array( 'FOR UPDATE' ) );
}
if ( !$inuse ) {
wfDebug( __METHOD__ . ": deleting $key\n" );
if ( !@unlink( $path ) ) {
$status->error( 'undelete-cleanup-error', $path );
$status->failCount++;
}
} else {
wfDebug( __METHOD__ . ": $key still in use\n" );
$status->successCount++;
}
$dbw->commit();
}
return $status;
}
/**
* Checks if there is a redirect named as $title
*
* @param Title $title Title of image
*/
function checkRedirect( $title ) {
global $wgMemc;
if( is_string( $title ) ) {
$title = Title::newFromTitle( $title );
}
if( $title instanceof Title && $title->getNamespace() == NS_MEDIA ) {
$title = Title::makeTitle( NS_FILE, $title->getText() );
}
$memcKey = $this->getSharedCacheKey( 'image_redirect', md5( $title->getDBkey() ) );
if ( $memcKey === false ) {
$memcKey = $this->getLocalCacheKey( 'image_redirect', md5( $title->getDBkey() ) );
$expiry = 300; // no invalidation, 5 minutes
} else {
$expiry = 86400; // has invalidation, 1 day
}
$cachedValue = $wgMemc->get( $memcKey );
if ( $cachedValue === ' ' || $cachedValue === '' ) {
// Does not exist
return false;
} elseif ( strval( $cachedValue ) !== '' ) {
return Title::newFromText( $cachedValue, NS_FILE );
} // else $cachedValue is false or null: cache miss
$id = $this->getArticleID( $title );
if( !$id ) {
$wgMemc->set( $memcKey, " ", $expiry );
return false;
}
$dbr = $this->getSlaveDB();
$row = $dbr->selectRow(
'redirect',
array( 'rd_title', 'rd_namespace' ),
array( 'rd_from' => $id ),
__METHOD__
);
if( $row && $row->rd_namespace == NS_FILE ) {
$targetTitle = Title::makeTitle( $row->rd_namespace, $row->rd_title );
$wgMemc->set( $memcKey, $targetTitle->getDBkey(), $expiry );
return $targetTitle;
} else {
$wgMemc->set( $memcKey, '', $expiry );
return false;
}
}
/**
* Function link Title::getArticleID().
* We can't say Title object, what database it should use, so we duplicate that function here.
*/
protected function getArticleID( $title ) {
if( !$title instanceof Title ) {
return 0;
}
$dbr = $this->getSlaveDB();
$id = $dbr->selectField(
'page', // Table
'page_id', //Field
array( //Conditions
'page_namespace' => $title->getNamespace(),
'page_title' => $title->getDBkey(),
),
__METHOD__ //Function name
);
return $id;
}
/**
* Get an array or iterator of file objects for files that have a given
* SHA-1 content hash.
*/
function findBySha1( $hash ) {
$dbr = $this->getSlaveDB();
$res = $dbr->select(
'image',
LocalFile::selectFields(),
array( 'img_sha1' => $hash )
);
$result = array();
while ( $row = $res->fetchObject() )
$result[] = $this->newFileFromRow( $row );
$res->free();
return $result;
}
/**
* Get a connection to the slave DB
*/
function getSlaveDB() {
return wfGetDB( DB_SLAVE );
}
/**
* Get a connection to the master DB
*/
function getMasterDB() {
return wfGetDB( DB_MASTER );
}
/**
* Get a key on the primary cache for this repository.
* Returns false if the repository's cache is not accessible at this site.
* The parameters are the parts of the key, as for wfMemcKey().
*/
function getSharedCacheKey( /*...*/ ) {
$args = func_get_args();
return call_user_func_array( 'wfMemcKey', $args );
}
/**
* Invalidates image redirect cache related to that image
*
* @param Title $title Title of image
*/
function invalidateImageRedirect( $title ) {
global $wgMemc;
$memcKey = $this->getSharedCacheKey( 'image_redirect', md5( $title->getDBkey() ) );
if ( $memcKey ) {
$wgMemc->delete( $memcKey );
}
}
}
|
