public override void OnActionExecuting(ActionExecutingContext actionContext)
        {
            var secretToken = actionContext.HttpContext.Request.Headers["USER_TOKEN_KEY"];
            if (secretToken != null)
            {
                if (String.IsNullOrWhiteSpace(secretToken))
                {
                    throw new Exception("USER_TOKEN_KEY was not found in the HTTP request headers.");
                }

                // TODO: Get rid of this when we have a better way of doing it
                //var cacheProvider = ObjectFactory.GetInstance<ICacheProvider>();
                var accessToken = AccessToken.ReadFromCache(secretToken);//, null);

                if (accessToken == null)
                {
                    throw new SecurityException("Application Not Authorised.");
                }

                var identity = new CloudCoreApiIdentity();
                identity.AddClaim(new Claim("ApplicationId", accessToken.ApplicationId.ToString()));
                identity.AddClaim(new Claim("UserId", accessToken.UserId.ToString()));

                var principal = new ClaimsPrincipal(identity);

                Thread.CurrentPrincipal = principal;
                HttpContext.Current.User = principal;
            }
            else
            {
                throw new SecurityException("Valid USER_TOKEN_KEY not found.");
            }
        }
        private void FakeIdentity(int applicationId, int userId)
        {
            var identity = new CloudCoreApiIdentity();
            identity.AddClaim(new Claim("ApplicationId", applicationId.ToString(CultureInfo.InvariantCulture)));
            identity.AddClaim(new Claim("UserId", userId.ToString(CultureInfo.InvariantCulture)));

            var principal = new ClaimsPrincipal(identity);

            Thread.CurrentPrincipal = principal;
            //MockHttpContext.CreateNewHttpContext();
            HttpContext.Current.User = principal;
        }