/**
  * Execute the console command.
  *
  * @return mixed
  */
 public function fire()
 {
     if (!DebugHelpers::shouldSiteBeLive()) {
         $this->info('Not running because site should not be live at the moment.');
         return;
     }
     $this->info('Sending ping command to any dvr bridge service servers that are being used.');
     // go though all dvrLiveStreamUris, get their dvr bridge service url, and send ping to it
     $dvrLiveStreamUriModels = DvrLiveStreamUri::with("liveStreamUri", "mediaItemLiveStream")->get();
     foreach ($dvrLiveStreamUriModels as $a) {
         $liveStreamUriModel = $a->liveStreamUri;
         $mediaItemLiveStream = $a->mediaItemLiveStream;
         $url = $liveStreamUriModel->uri;
         $this->info("Sending ping command to dvr bridge service at url \"" . $url . "\".");
         $responseInfo = MediaItemLiveStream::makeDvrBridgeServiceRequest($url, "PING", intval($a->id));
         if ($responseInfo["statusCode"] !== 200) {
             // error occurred. Remove dvrLiveStreamUri as something's wrong with it.
             $a->delete();
             $this->info("Error occurred/response returned from ping command to dvr bridge service at url \"" . $url . "\". Removing dvr link.");
         } else {
             $this->info("Sent ping command to dvr bridge service at url \"" . $url . "\".");
         }
     }
     $this->info("Finished.");
 }