示例#1
0
 /**
  * @return EventRelayerGroup
  */
 public static function singleton()
 {
     if (!self::$instance) {
         self::$instance = new self(RequestContext::getMain()->getConfig());
     }
     return self::$instance;
 }
示例#2
0
 /**
  * Purges a list of CDN nodes defined in $wgSquidServers.
  * $urlArr should contain the full URLs to purge as values
  * (example: $urlArr[] = 'http://my.host/something')
  *
  * @param string[] $urlArr List of full URLs to purge
  */
 public static function purge(array $urlArr)
 {
     global $wgSquidServers, $wgHTCPRouting;
     if (!$urlArr) {
         return;
     }
     // Remove duplicate URLs from list
     $urlArr = array_unique($urlArr);
     wfDebugLog('squid', __METHOD__ . ': ' . implode(' ', $urlArr));
     // Reliably broadcast the purge to all edge nodes
     $relayer = EventRelayerGroup::singleton()->getRelayer('cdn-url-purges');
     $relayer->notify('cdn-url-purges', array('urls' => array_values($urlArr), 'timestamp' => microtime(true)));
     // Send lossy UDP broadcasting if enabled
     if ($wgHTCPRouting) {
         self::HTCPPurge($urlArr);
     }
     // Do direct server purges if enabled (this does not scale very well)
     if ($wgSquidServers) {
         // Maximum number of parallel connections per squid
         $maxSocketsPerSquid = 8;
         // Number of requests to send per socket
         // 400 seems to be a good tradeoff, opening a socket takes a while
         $urlsPerSocket = 400;
         $socketsPerSquid = ceil(count($urlArr) / $urlsPerSocket);
         if ($socketsPerSquid > $maxSocketsPerSquid) {
             $socketsPerSquid = $maxSocketsPerSquid;
         }
         $pool = new SquidPurgeClientPool();
         $chunks = array_chunk($urlArr, ceil(count($urlArr) / $socketsPerSquid));
         foreach ($wgSquidServers as $server) {
             foreach ($chunks as $chunk) {
                 $client = new SquidPurgeClient($server);
                 foreach ($chunk as $url) {
                     $client->queuePurge($url);
                 }
                 $pool->addClient($client);
             }
         }
         $pool->run();
     }
 }