public function McrouterStatsSubscriber::onPopulateStats in Memcache API and Integration 8.2

Adds stats to the memcache event.

Parameters

\Drupal\memcache_admin\Event\MemcacheStatsEvent $event: The event being dispatched.

Throws

\Exception

File

memcache_admin/src/EventSubscriber/McrouterStatsSubscriber.php, line 39

Class

McrouterStatsSubscriber

Adds memcache server specific details to the stats array.

Namespace

Drupal\memcache_admin\EventSubscriber

Code

public function onPopulateStats(MemcacheStatsEvent $event) {
  $memcache = $event
    ->getMemcache();
  if (!$memcache
    ->getMemcache()
    ->get('__mcrouter__.version')) {
    return;
  }
  $raw_stats = $event
    ->getRawStats();
  $bin = $event
    ->getCacheBin();

  // No cache bin data, return.
  if (!isset($raw_stats[$bin])) {
    return;
  }

  // No servers found, return.
  if (!is_array($raw_stats[$bin])) {
    return;
  }
  $servers = array_keys($raw_stats[$bin]);
  foreach ($servers as $server) {
    if ($server == 'total') {
      continue;
    }

    // McRouter reports num_servers use that for detecting stats.
    if (isset($raw_stats[$bin][$server]['num_servers'])) {
      $event
        ->updateFormattedStats('memcache', $bin, $server, new McrouterStatsObject($raw_stats[$bin][$server]));
      $event
        ->updateServers($server);
    }
  }
}