* @return bool
*/
function loadFromCache() {
- global $wgMemc;
-
$this->dataLoaded = false;
$this->extraDataLoaded = false;
$key = $this->getCacheKey();
if ( !$key ) {
-
return false;
}
- $cachedValues = $wgMemc->get( $key );
+ $cache = ObjectCache::getMainWANInstance();
+ $cachedValues = $cache->get( $key );
// Check if the key existed and belongs to this version of MediaWiki
if ( isset( $cachedValues['version'] ) && $cachedValues['version'] == MW_FILE_VERSION ) {
* Save the file metadata to memcached
*/
function saveToCache() {
- global $wgMemc;
-
$this->load();
- $key = $this->getCacheKey();
+ $key = $this->getCacheKey();
if ( !$key ) {
return;
}
}
// Cache presence for 1 week and negatives for 1 day
- $wgMemc->set( $key, $cache, $this->fileExists ? 86400 * 7 : 86400 );
+ $cache = ObjectCache::getMainWANInstance();
+ $cache->set( $key, $cache, $this->fileExists ? 86400 * 7 : 86400 );
+ }
+
+ /**
+ * Purge the file object/metadata cache
+ */
+ function invalidateCache() {
+ $this->load();
+
+ $key = $this->getCacheKey();
+ if ( !$key ) {
+ return;
+ }
+
+ $cache = ObjectCache::getMainWANInstance();
+ $cache->delete( $key );
}
/**
__METHOD__
);
- $this->saveToCache();
+ $this->invalidateCache();
$this->unlock(); // done
* Refresh metadata in memcached, but don't touch thumbnails or squid
*/
function purgeMetadataCache() {
- $this->loadFromDB( File::READ_LATEST );
- $this->saveToCache();
+ $this->invalidateCache();
}
/**
# to after $wikiPage->doEdit has been called.
$dbw->commit( __METHOD__ );
- # Save to memcache.
- # We shall not saveToCache before the commit since otherwise
- # in case of a rollback there is an usable file from memcached
- # which in fact doesn't really exist (bug 24978)
- $this->saveToCache();
+ # Update memcache after the commit
+ $this->invalidateCache();
if ( $exists ) {
# Invalidate the cache for the description page
array( 'img_sha1' => $this->sha1 ),
array( 'img_name' => $this->getName() ),
__METHOD__ );
- $this->saveToCache();
+ $this->invalidateCache();
}
$this->unlock(); // done