php - 访问 PHP 保护对象属性（haproxy）

Question

我正在使用这个库的修改版本（https://github.com/kamermans/HAProxyAPI）连接到我所有的负载均衡器实例。但是，要知道连接的服务器是活动实例还是备份实例，我需要从统计信息中处理“bck”属性。（我无法使用：$loadbalancer['haproxy_stats']->info->line->data->bck 访问它）

注意这个属性：$loadbalancer['haproxy_stats']->health->backup。不是我需要的，这仅表明此负载均衡器中是否存在备份服务器。

我如何访问此属性？

示例 Haproxy Stats 来自：HAProxy_Stats::get($exec)->getServiceStats($interface,$server);

结果 (print_r) 如下所示：

HAProxy_Stats_Service Object ( [info] => HAProxy_Stats_Info Object ( [map:protected] => Array ( [pxname] => proxy_name [svname] => service_name [weight] => weight [pid] => process_id [iid] => proxy_id [sid] => service_id [tracked] => tracked [type] => type )

        [type] => 2
        [proxy_name] => core_loadbalancer
        [service_name] => Core03
        [process_id] => 1
        [proxy_id] => 2
        [service_id] => 3
        [weight] => 1
        [tracked] => 
        [line:protected] => HAProxy_Stats_Line Object
            (
                [data:protected] => Array
                    (
                        [pxname] => core_loadbalancer
                        [svname] => Core03
                        [qcur] => 0
                        [qmax] => 0
                        [scur] => 0
                        [smax] => 0
                        [slim] => 20000
                        [stot] => 0
                        [bin] => 0
                        [bout] => 0
                        [dreq] => 
                        [dresp] => 0
                        [ereq] => 
                        [econ] => 0
                        [eresp] => 0
                        [wretr] => 0
                        [wredis] => 0
                        [status] => UP
                        [weight] => 1
                        [act] => 0
                        [bck] => 1
                        [chkfail] => 6
                        [chkdown] => 0
                        [lastchg] => 523133
                        [downtime] => 0
                        [qlimit] => 
                        [pid] => 1
                        [iid] => 2
                        [sid] => 3
                        [throttle] => 
                        [lbtot] => 0
                        [tracked] => 
                        [type] => 2
                        [rate] => 0
                        [rate_lim] => 
                        [rate_max] => 0
                        [check_status] => L4OK
                        [check_code] => 
                        [check_duration] => 0
                        [hrsp_1xx] => 0
                        [hrsp_2xx] => 0
                        [hrsp_3xx] => 0
                        [hrsp_4xx] => 0
                        [hrsp_5xx] => 0
                        [hrsp_other] => 0
                        [hanafail] => 0
                        [req_rate] => 
                        [req_rate_max] => 
                        [req_tot] => 
                        [cli_abrt] => 0
                        [srv_abrt] => 0
                        [] => 
                    )

            )

    )

对象继续，但有字符限制...

Answer 1

如果为它创建了一个问题，这将很快得到回答，但我猜迟到总比没有好:)

这确实是正确的属性：

$loadbalancer['haproxy_stats']->health->backup

但是，如果您正在检查负载均衡器 BACKEND 的统计信息，它只会返回备份节点的数量。如果您想知道各个节点是活动的还是备份的，您需要像这样迭代它们：

foreach ($stats->getBackendNames() as $backend) {
    foreach ($stats->getServerNames($backend) as $server) {
        $service = $stats->getServiceStats($backend, $server);
        echo "$backend:$server\n";
        echo "  Active: {$service->health->active}\n";
        echo "  Backup: {$service->health->backup}\n";
        echo "  Health: {$service->health->status}\n\n";
    }
}

这将产生如下输出：

foo-cloud:FRONTEND
  Active: 
  Backup: 
  Health: OPEN

production-nodes:hiphop-node01-us.foocloud.com
  Active: 1
  Backup: 0
  Health: UP

production-nodes:apache-node01-us.foocloud.com
  Active: 0
  Backup: 1
  Health: UP

production-nodes:hiphop-node02-us.foocloud.com
  Active: 1
  Backup: 0
  Health: UP

production-nodes:apache-node02-us.foocloud.com
  Active: 0
  Backup: 1
  Health: MAINT

production-nodes:BACKEND
  Active: 2
  Backup: 2
  Health: UP

stats:FRONTEND
  Active: 
  Backup: 
  Health: OPEN

stats:BACKEND
  Active: 0
  Backup: 0
  Health: UP