From d49324ec7d2897f8d0b387aa634c40a2ed17fe8f Mon Sep 17 00:00:00 2001
From: Aaron Schulz <aaron@users.mediawiki.org>
Date: Sat, 14 Jan 2012 03:16:18 +0000
Subject: [PATCH] * Fixed bogus var in LSLockManager. * Made DBLockManager
 constructor a bit more convenient to use with just 'localDBMaster' in the db
 buckets. * Documentation tweaks.

---
 includes/filerepo/backend/SwiftFileBackend.php          | 2 ++
 includes/filerepo/backend/lockmanager/DBLockManager.php | 4 +++-
 includes/filerepo/backend/lockmanager/LSLockManager.php | 2 +-
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/includes/filerepo/backend/SwiftFileBackend.php b/includes/filerepo/backend/SwiftFileBackend.php
index a067d5f035..4140f89487 100644
--- a/includes/filerepo/backend/SwiftFileBackend.php
+++ b/includes/filerepo/backend/SwiftFileBackend.php
@@ -16,6 +16,7 @@
  * All of the library classes must be registed in $wgAutoloadClasses.
  *
  * @ingroup FileBackend
+ * @since 1.19
  */
 class SwiftFileBackend extends FileBackend {
 	/** @var CF_Authentication */
@@ -650,6 +651,7 @@ class SwiftFileBackend extends FileBackend {
 /**
  * SwiftFileBackend helper class to page through object listings.
  * Swift also has a listing limit of 10,000 objects for sanity.
+ * Do not use this class from places outside SwiftFileBackend.
  *
  * @ingroup FileBackend
  */
diff --git a/includes/filerepo/backend/lockmanager/DBLockManager.php b/includes/filerepo/backend/lockmanager/DBLockManager.php
index 900a6396b9..045056ead6 100644
--- a/includes/filerepo/backend/lockmanager/DBLockManager.php
+++ b/includes/filerepo/backend/lockmanager/DBLockManager.php
@@ -55,7 +55,9 @@ class DBLockManager extends LockManager {
 	 * @param Array $config 
 	 */
 	public function __construct( array $config ) {
-		$this->dbServers = $config['dbServers'];
+		$this->dbServers = isset( $config['dbServers'] )
+			? $config['dbServers']
+			: array(); // likely just using 'localDBMaster'
 		// Sanitize dbsByBucket config to prevent PHP errors
 		$this->dbsByBucket = array_filter( $config['dbsByBucket'], 'is_array' );
 		$this->dbsByBucket = array_values( $this->dbsByBucket ); // consecutive
diff --git a/includes/filerepo/backend/lockmanager/LSLockManager.php b/includes/filerepo/backend/lockmanager/LSLockManager.php
index 58fb8f3f2d..8b59009619 100644
--- a/includes/filerepo/backend/lockmanager/LSLockManager.php
+++ b/includes/filerepo/backend/lockmanager/LSLockManager.php
@@ -278,7 +278,7 @@ class LSLockManager extends LockManager {
 	 */
 	protected function getBucketFromKey( $path ) {
 		$prefix = substr( sha1( $path ), 0, 2 ); // first 2 hex chars (8 bits)
-		return intval( base_convert( $prefix, 16, 10 ) ) % count( $this->dbsByBucket );
+		return intval( base_convert( $prefix, 16, 10 ) ) % count( $this->srvsByBucket );
 	}
 
 	/**
-- 
2.20.1