+ /**
+ * @param array $servers
+ * @param Config $mainConfig
+ */
+ private static function sanityCheckServerConfig( array $servers, Config $mainConfig ) {
+ $ldDB = $mainConfig->get( 'DBname' ); // local domain DB
+ $ldTP = $mainConfig->get( 'DBprefix' ); // local domain prefix
+
+ foreach ( $servers as $server ) {
+ $type = $server['type'] ?? null;
+ $srvDB = $server['dbname'] ?? null; // server DB
+ $srvTP = $server['tablePrefix'] ?? ''; // server table prefix
+
+ if ( $type === 'mysql' ) {
+ // A DB name is not needed to connect to mysql; 'dbname' is useless.
+ // This field only defines the DB to use for unspecified DB domains.
+ if ( $srvDB !== null && $srvDB !== $ldDB ) {
+ self::reportMismatchedDBs( $srvDB, $ldDB );
+ }
+ } elseif ( $type === 'postgres' ) {
+ if ( $srvTP !== '' ) {
+ self::reportIfPrefixSet( $srvTP, $type );
+ }
+ }
+
+ if ( $srvTP !== '' && $srvTP !== $ldTP ) {
+ self::reportMismatchedPrefixes( $srvTP, $ldTP );
+ }
+ }
+ }
+
+ /**
+ * @param string $prefix Table prefix
+ * @param string $dbType Database type
+ */
+ private static function reportIfPrefixSet( $prefix, $dbType ) {
+ $e = new UnexpectedValueException(
+ "\$wgDBprefix is set to '$prefix' but the database type is '$dbType'. " .
+ "MediaWiki does not support using a table prefix with this RDBMS type."
+ );
+ MWExceptionRenderer::output( $e, MWExceptionRenderer::AS_PRETTY );
+ exit;
+ }
+
+ /**
+ * @param string $srvDB Server config database
+ * @param string $ldDB Local DB domain database
+ */
+ private static function reportMismatchedDBs( $srvDB, $ldDB ) {
+ $e = new UnexpectedValueException(
+ "\$wgDBservers has dbname='$srvDB' but \$wgDBname='$ldDB'. " .
+ "Set \$wgDBname to the database used by this wiki project. " .
+ "There is rarely a need to set 'dbname' in \$wgDBservers. " .
+ "Cross-wiki database access, use of WikiMap::getCurrentWikiDbDomain(), " .
+ "use of Database::getDomainId(), and other features are not reliable when " .
+ "\$wgDBservers does not match the local wiki database/prefix."
+ );
+ MWExceptionRenderer::output( $e, MWExceptionRenderer::AS_PRETTY );
+ exit;
+ }
+
+ /**
+ * @param string $srvTP Server config table prefix
+ * @param string $ldTP Local DB domain database
+ */
+ private static function reportMismatchedPrefixes( $srvTP, $ldTP ) {
+ $e = new UnexpectedValueException(
+ "\$wgDBservers has tablePrefix='$srvTP' but \$wgDBprefix='$ldTP'. " .
+ "Set \$wgDBprefix to the table prefix used by this wiki project. " .
+ "There is rarely a need to set 'tablePrefix' in \$wgDBservers. " .
+ "Cross-wiki database access, use of WikiMap::getCurrentWikiDbDomain(), " .
+ "use of Database::getDomainId(), and other features are not reliable when " .
+ "\$wgDBservers does not match the local wiki database/prefix."
+ );
+ MWExceptionRenderer::output( $e, MWExceptionRenderer::AS_PRETTY );
+ exit;
+ }
+