コード例 #1
0
  @Override
  protected void perform() {
    // Generate the ticket if needed (in some situations the client will not send
    // a ticket):
    if (StringUtils.isEmpty(ticket)) {
      ticket = Ticketing.generateOTP();
    }

    // Update the dynamic information of the virtual machine in memory (we need it
    // to update the database later):
    final VM vm = getVm();
    final DbUser user = getCurrentUser();
    vm.setConsoleUserId(user.getId());
    vm.setConsoleCurrentUserName(getConsoleUserName());

    // If the virtual machine has the allow reconnect flag or the user
    // needed additional permissions to connect to the console then we just
    // have to save the user id to the database, regardless of what was
    // there before and without locking.
    //
    // Note that the fact that the user needed permissions actually means
    // that it has them, otherwise we will not be here, performing the
    // operation.
    //
    // In any other situation we try to save the new user to the database
    // and proceed only if the previous user in the database is null. This
    // is needed to prevent races between different users trying to access
    // the console of the same virtual machine simultaneously.
    final VmDynamicDao dao = DbFacade.getInstance().getVmDynamicDao();
    if (vm.getAllowConsoleReconnect() || neededPermissions) {
      dao.update(vm.getDynamicData());
      sendTicket();
    } else {
      final boolean saved = dao.updateConsoleUserWithOptimisticLocking(vm.getDynamicData());
      if (saved) {
        sendTicket();
      } else {
        dontSendTicket();
      }
    }
  }
コード例 #2
0
 private boolean isVmRunningOnHost(Guid hostId) {
   return !vmDynamicDao.getAllRunningForVds(hostId).isEmpty();
 }