访问 PHP 保护对象属性（haproxy）答案

【问题标题】：Access PHP protected object property (haproxy)访问 PHP 保护对象属性（haproxy）
【发布时间】：2013-07-19 16:47:03
【问题描述】：

我正在使用该库的修改版本 (https://github.com/kamermans/HAProxyAPI) 连接到我的所有负载均衡器实例。但是，要知道连接的服务器是活动实例还是备份实例，我需要从统计数据中处理“bck”属性。（我无法使用：$loadbalancer['haproxy_stats']->info->line->data->bck）

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。

如何访问此属性？

示例 Haproxy 统计数据来自：HAProxy_Stats::get($exec)->getServiceStats($interface,$server);

结果（print_r）如下所示：

HAProxy_Stats_Service 对象 ( [信息] => HAProxy_Stats_Info 对象 ( [地图：受保护] => 数组 ( [pxname] => 代理名称 [svname] => 服务名称 [重量] => 重量 [pid] => process_id [iid] => proxy_id [sid] => service_id [跟踪] => 跟踪 [类型] => 类型 )

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

            )

    )

对象继续，但有字符限制...

【问题讨论】：

标签： php object properties private haproxy

【解决方案1】：

如果issue was created for it 会更快得到答复，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用的，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

【讨论】：