Avoid master queries in getAutoDeleteReason()

This largely used the slaves anyway, but not for certain bits.

Bug: T92357
Change-Id: I909a14b25a959ee28960aa7aa3d799c5f10988d1

diff --git a/includes/content/ContentHandler.php b/includes/content/ContentHandler.php
index 7430caf..f3d6781 100644 (file)
--- a/includes/content/ContentHandler.php
+++ b/includes/content/ContentHandler.php
@@ -892,7 +892,7 @@ abstract class ContentHandler {
         * have it / want it.
         */
        public function getAutoDeleteReason( Title $title, &$hasHistory ) {
-               $dbw = wfGetDB( DB_MASTER );
+               $dbr = wfGetDB( DB_SLAVE );
 
                // Get the last revision
                $rev = Revision::newFromTitle( $title );
@@ -922,10 +922,10 @@ abstract class ContentHandler {
 
                // Find out if there was only one contributor
                // Only scan the last 20 revisions
-               $res = $dbw->select( 'revision', 'rev_user_text',
+               $res = $dbr->select( 'revision', 'rev_user_text',
                        [
                                'rev_page' => $title->getArticleID(),
-                               $dbw->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0'
+                               $dbr->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0'
                        ],
                        __METHOD__,
                        [ 'LIMIT' => 20 ]
@@ -937,7 +937,7 @@ abstract class ContentHandler {
                }
 
                $hasHistory = ( $res->numRows() > 1 );
-               $row = $dbw->fetchObject( $res );
+               $row = $dbr->fetchObject( $res );
 
                if ( $row ) { // $row is false if the only contributor is hidden
                        $onlyAuthor = $row->rev_user_text;