LoadBalancerDisabled.php

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<?php
namespace Wikimedia\Rdbms;
 
use RuntimeException;
 
class LoadBalancerDisabled extends LoadBalancer {
 
    public function __construct( $params = [] ) {
        parent::__construct( [
            'servers' => [ [
                'type' => 'disabled',
                'host' => '(disabled)',
                'dbname' => null,
                'load' => 1,
            ] ],
            'trxProfiler' => $params['trxProfiler'] ?? null,
            'srvCache' => $params['srvCache'] ?? null,
            'wanCache' => $params['wanCache'] ?? null,
            'localDomain' => $params['localDomain'] ?? '(disabled)',
            'readOnlyReason' => $params['readOnlyReason'] ?? false,
            'clusterName' => $params['clusterName'] ?? null,
        ] );
    }
 
    protected function reallyOpenConnection( $i, DatabaseDomain $domain, array $lbInfo ) {
        throw new RuntimeException( 'Database backend disabled' );
    }
 
    public function getConnection( $i, $groups = [], $domain = false, $flags = 0 ) {
        throw new RuntimeException( 'Database backend disabled' );
    }
 
    public function getConnectionInternal( $i, $groups = [], $domain = false, $flags = 0 ): IDatabase {
        throw new RuntimeException( 'Database backend disabled' );
    }
 
    public function getConnectionRef( $i, $groups = [], $domain = false, $flags = 0 ): IDatabase {
        throw new RuntimeException( 'Database backend disabled' );
    }
 
    public function getMaintenanceConnectionRef( $i, $groups = [], $domain = false, $flags = 0 ): DBConnRef {
        throw new RuntimeException( 'Database backend disabled' );
    }
 
    public function reuseConnection( IDatabase $conn ) {
        // noop
    }
 
}