$wgExternalBlobCache = array();
class ExternalStoreDB {
- /**
- * Fetch data from given URL
- * @param string $url An url
- */
+ /** @todo Document.*/
function &getLoadBalancer( $cluster ) {
global $wgExternalServers, $wgExternalLoadBalancers;
if ( !array_key_exists( $cluster, $wgExternalLoadBalancers ) ) {
return $wgExternalLoadBalancers[$cluster];
}
+ /** @todo Document.*/
function &getSlave( $cluster ) {
$lb =& $this->getLoadBalancer( $cluster );
return $lb->getConnection( DB_SLAVE );
}
+ /** @todo Document.*/
function &getMaster( $cluster ) {
$lb =& $this->getLoadBalancer( $cluster );
return $lb->getConnection( DB_MASTER );
}
+ /** @todo Document.*/
function getTable( &$db ) {
$table = $db->getLBInfo( 'blobs table' );
if ( is_null( $table ) ) {
return $table;
}
+ /**
+ * Fetch data from given URL
+ * @param string $url An url of the form DB://cluster/id or DB://cluster/id/itemid for concatened storage.
+ */
function fetchFromURL($url) {
- #
- # URLs have the form DB://cluster/id or DB://cluster/id/itemid for concatenated storage
- #
$path = explode( '/', $url );
$cluster = $path[2];
$id = $path[3];
* Fetch a blob item out of the database; a cache of the last-loaded
* blob will be kept so that multiple loads out of a multi-item blob
* can avoid redundant database access and decompression.
+ * @param $cluster
+ * @param $id
+ * @param $itemID
* @return mixed
- * @access private
+ * @private
*/
function &fetchBlob( $cluster, $id, $itemID ) {
global $wgExternalBlobCache;
/**
* Insert a data item into a given cluster
*
- * @param string $cluster The cluster name
- * @param string $data The data item
+ * @param $cluster String: the cluster name
+ * @param $data String: the data item
* @return string URL
*/
function store( $cluster, $data ) {