UBL UUID Lookup

 @EventHandler(priority=EventPriority.HIGH, ignoreCancelled=true)
  public void onLogin(AsyncPlayerPreLoginEvent event)
  {
    if (!this.plugin.isReady())
    {
      event.disallow(AsyncPlayerPreLoginEvent.Result.KICK_OTHER, "AutoUBL is not ready");
      return;
    }
    if (this.plugin.isUUIDReady()) {
      try
      {
        if (this.plugin.isBanned(event.getName(), event.getUniqueId())) {
          event.disallow(AsyncPlayerPreLoginEvent.Result.KICK_BANNED, this.plugin.getBanMessage(event.getUniqueId()));
        }
        return;
      }
      catch (NoSuchMethodError ex)
      {
        this.plugin.getLogger().warning("This server is outdated so we are forced to fall back on a slow inefficient method fetcher player UUIDs from Mojangs API server. Please consider updating to at least the latest CB 1.7.5-R0.1-SNAPSHOT or later");
        try
        {
          String ign = event.getName();
          UUID uuid = UUIDFetcher.getUUIDOf(ign);
          if (this.plugin.isBanned(ign, uuid)) {
            event.disallow(AsyncPlayerPreLoginEvent.Result.KICK_BANNED, this.plugin.getBanMessage(uuid));
          }
        }
        catch (Exception ex1)
        {
          this.plugin.getLogger().log(Level.WARNING, "Failed to lookup UUID of " + event.getName(), ex1);
          event.disallow(AsyncPlayerPreLoginEvent.Result.KICK_OTHER, "Authentication failed due to " + ex1.getLocalizedMessage());
        }
        return;
      }
    }
    if (this.plugin.isBanned(event.getName())) {
      event.disallow(AsyncPlayerPreLoginEvent.Result.KICK_BANNED, this.plugin.getBanMessage(event.getName()));
    }
  }