<?php
+/**
+ * Local repository that stores files in the local filesystem and registers them
+ * in the wiki's own database.
+ *
+ * @file
+ * @ingroup FileRepo
+ */
+
/**
* 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.
var $fileFromRowFactory = array( 'LocalFile', 'newFromRow' );
var $oldFileFromRowFactory = array( 'OldLocalFile', 'newFromRow' );
- function getSlaveDB() {
- return wfGetDB( DB_SLAVE );
- }
-
- function getMasterDB() {
- return wfGetDB( DB_MASTER );
- }
-
- function getMemcKey( $key ) {
- return wfWikiID( $this->getSlaveDB() ) . ":{$key}";
- }
-
function newFileFromRow( $row ) {
if ( isset( $row->img_name ) ) {
return call_user_func( $this->fileFromRowFactory, $row, $this );
$ext = File::normalizeExtension($ext);
$inuse = $dbw->selectField( 'oldimage', '1',
array( 'oi_sha1' => $sha1,
- "oi_archive_name LIKE '%.{$ext}'",
- 'oi_deleted & '.File::DELETED_FILE => File::DELETED_FILE ),
+ 'oi_archive_name ' . $dbw->buildLike( $dbw->anyString(), ".$ext" ),
+ $dbw->bitAnd('oi_deleted', File::DELETED_FILE) => File::DELETED_FILE ),
__METHOD__, array( 'FOR UPDATE' ) );
}
if ( !$inuse ) {
}
return $status;
}
-
+
/**
- * Function link Title::getArticleID().
- * We can't say Title object, what database it should use, so we duplicate that function here.
+ * Checks if there is a redirect named as $title
+ *
+ * @param $title Title of file
*/
- 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;
- }
-
function checkRedirect( $title ) {
global $wgMemc;
$title = Title::newFromTitle( $title );
}
if( $title instanceof Title && $title->getNamespace() == NS_MEDIA ) {
- $title = Title::makeTitle( NS_IMAGE, $title->getText() );
+ $title = Title::makeTitle( NS_FILE, $title->getText() );
}
- $memcKey = $this->getMemcKey( "image_redirect:" . md5( $title->getPrefixedDBkey() ) );
+ $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 ) {
- return Title::newFromDbKey( $cachedValue );
- } elseif( $cachedValue == ' ' ) { # FIXME: ugly hack, but BagOStuff caching seems to be weird and return false if !cachedValue, not only if it doesn't exist
+ 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, " ", 9000 );
+ $wgMemc->set( $memcKey, " ", $expiry );
return false;
}
$dbr = $this->getSlaveDB();
__METHOD__
);
- if( $row ) $targetTitle = Title::makeTitle( $row->rd_namespace, $row->rd_title );
- $wgMemc->set( $memcKey, ($row ? $targetTitle->getPrefixedDBkey() : " "), 9000 );
- if( !$row ) {
+ 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;
}
- return $targetTitle;
}
- function invalidateImageRedirect( $title ) {
- global $wgMemc;
- $memcKey = $this->getMemcKey( "image_redirect:" . md5( $title->getPrefixedDBkey() ) );
- $wgMemc->delete( $memcKey );
+
+ /**
+ * 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(
);
$result = array();
- while ( $row = $res->fetchObject() )
+ foreach ( $res as $row ) {
$result[] = $this->newFileFromRow( $row );
+ }
$res->free();
+
return $result;
}
-
- /*
- * Find many files using one query
+
+ /**
+ * Get a connection to the slave DB
*/
- function findFiles( $titles, $flags ) {
- // FIXME: Comply with $flags
- // FIXME: Only accepts a $titles array where the keys are the sanitized
- // file names.
-
- if ( count( $titles ) == 0 ) return array();
-
- $dbr = $this->getSlaveDB();
- $res = $dbr->select(
- 'image',
- LocalFile::selectFields(),
- array( 'img_name' => array_keys( $titles ) )
- );
-
- $result = array();
- while ( $row = $res->fetchObject() ) {
- $result[$row->img_name] = $this->newFileFromRow( $row );
+ 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 of page
+ */
+ function invalidateImageRedirect( $title ) {
+ global $wgMemc;
+ $memcKey = $this->getSharedCacheKey( 'image_redirect', md5( $title->getDBkey() ) );
+ if ( $memcKey ) {
+ $wgMemc->delete( $memcKey );
}
- $res->free();
- return $result;
}
}
+
dépôts / lhc / web / wiklou.git / blobdiff