findUser.java

public class FindUserByPhoneHandler implements RequestHandler<Map<String, Object>, ApiGatewayResponse> {

   private static final DynamoDBUserDao userDao = DynamoDBUserDao.instance();

   @Override
   public ApiGatewayResponse handleRequest(Map<String, Object> input, Context context) {

       Tuple2<Jws<Claims>, ApiGatewayResponse> jwsParsed = JwtValidator.validateJwt(input, "admin|siteadmin|useradmin|agent|individual|global-admin");

       if (jwsParsed._2 != null) {
           return jwsParsed._2;
       }

       String login = getPathParameter("mobile", input);
       Optional<User> user;

       if (JwtValidator.containsRoles(jwsParsed._1, "individual|agent")) {
           String loginFromJwt = jwsParsed._1.getBody().getIssuer();

           if (loginFromJwt.compareTo(login) != 0) {
               return error(ApiErrorMessage.ApiError.API_BAD_PARAMETER, "login", login,
                       "The user with phone [" + login + "] can only get info about self profile.");
           }
           user = userDao.findUserByPhone(loginFromJwt);
       } else {
           user = userDao.findUserByPhone(login);
       }

       if (!user.isPresent()) {
           return error(ApiErrorMessage.ApiError.API_NOT_FOUND, "login", login,
                   "The user with phone [" + login + "] does not exist.");
       }

       user.get().setPassword(null);
       return success(200, user.get());
   }
}