Parse duplicate-defaultsort error message

[lhc/web/wiklou.git] / maintenance / sql.php

diff --git a/maintenance/sql.php b/maintenance/sql.php
index 216db93..a628b0b 100644 (file)
--- a/maintenance/sql.php
+++ b/maintenance/sql.php
@@ -34,16 +34,42 @@ class MwSql extends Maintenance {
                parent::__construct();
                $this->mDescription = "Send SQL queries to a MediaWiki database";
                $this->addOption( 'cluster', 'Use an external cluster by name', false, true );
+               $this->addOption( 'slave', 'Use a slave server (either "any" or by name)', false, true );
        }
 
        public function execute() {
-               // Get a DB handle (with this wiki's DB select) from the appropriate load balancer
+               // Get the appropriate load balancer (for this wiki)
                if ( $this->hasOption( 'cluster' ) ) {
                        $lb = wfGetLBFactory()->getExternalLB( $this->getOption( 'cluster' ) );
-                       $dbw = $lb->getConnection( DB_MASTER ); // master for external LB
                } else {
-                       $dbw = wfGetDB( DB_MASTER ); // master for primary LB for this wiki
+                       $lb = wfGetLB();
                }
+               // Figure out which server to use
+               if ( $this->hasOption( 'slave' ) ) {
+                       $server = $this->getOption( 'slave' );
+                       if ( $server === 'any' ) {
+                               $index = DB_SLAVE;
+                       } else {
+                               $index = null;
+                               for ( $i = 0; $i < $lb->getServerCount(); ++$i ) {
+                                       if ( $lb->getServerName( $i ) === $server ) {
+                                               $index = $i;
+                                               break;
+                                       }
+                               }
+                               if ( $index === null ) {
+                                       $this->error( "No slave server configured with the name '$server'.", 1 );
+                               }
+                       }
+               } else {
+                       $index = DB_MASTER;
+               }
+               // Get a DB handle (with this wiki's DB selected) from the appropriate load balancer
+               $dbw = $lb->getConnection( $index );
+               if ( $this->hasOption( 'slave' ) && $dbw->getLBInfo( 'master' ) !== null ) {
+                       $this->error( "The server selected ({$dbw->getServer()}) is not a slave.", 1 );
+               }
+
                if ( $this->hasArg( 0 ) ) {
                        $file = fopen( $this->getArg( 0 ), 'r' );
                        if ( !$file ) {