@Transactional
 public AccessKey create(@NotNull User user, @NotNull AccessKey accessKey) {
   if (accessKey.getLabel() == null) {
     throw new IllegalParametersException(Messages.LABEL_IS_REQUIRED);
   }
   Optional<AccessKey> akOpt =
       genericDAO
           .createNamedQuery(
               AccessKey.class, "AccessKey.getByUserAndLabel", Optional.<CacheConfig>empty())
           .setParameter("userId", user.getId())
           .setParameter("label", accessKey.getLabel())
           .getResultList()
           .stream()
           .findFirst();
   if (akOpt.isPresent()) {
     logger.error("Access key with label {} already exists", accessKey.getLabel());
     throw new ActionNotAllowedException(Messages.DUPLICATE_LABEL_FOUND);
   }
   if (accessKey.getId() != null) {
     logger.error("Access key id shouldn't be present in request parameters");
     throw new IllegalParametersException(Messages.INVALID_REQUEST_PARAMETERS);
   }
   authenticationUtils.validateActions(accessKey);
   AccessKeyProcessor keyProcessor = new AccessKeyProcessor();
   String key = keyProcessor.generateKey();
   accessKey.setKey(key);
   accessKey.setUser(user);
   genericDAO.persist(accessKey);
   for (AccessKeyPermission current : accessKey.getPermissions()) {
     AccessKeyPermission permission = preparePermission(current);
     permission.setAccessKey(accessKey);
     genericDAO.persist(permission);
   }
   return genericDAO.find(AccessKey.class, accessKey.getId());
 }
 @Transactional
 public AccessKey createAccessKeyFromOAuthGrant(OAuthGrant grant, User user, Date now) {
   AccessKey newKey = new AccessKey();
   newKey.setType(AccessKeyType.OAUTH);
   if (grant.getAccessType().equals(AccessType.ONLINE)) {
     Date expirationDate = new Date(now.getTime() + 600000); // the key is valid for 10 minutes
     newKey.setExpirationDate(expirationDate);
   }
   newKey.setUser(user);
   newKey.setLabel(
       String.format(
           Messages.OAUTH_GRANT_TOKEN_LABEL,
           grant.getClient().getName(),
           System.currentTimeMillis()));
   Set<AccessKeyPermission> permissions = new HashSet<>();
   AccessKeyPermission permission = new AccessKeyPermission();
   permission.setDomainArray(grant.getClient().getDomain());
   permission.setActionsArray(StringUtils.split(grant.getScope(), ' '));
   permission.setSubnetsArray(grant.getClient().getSubnet());
   permission.setNetworkIds(grant.getNetworkIds());
   permissions.add(permission);
   newKey.setPermissions(permissions);
   create(user, newKey);
   return newKey;
 }