/// <summary>
/// Returns the user cache of the given user. If the user does not exist in CAM it is added. If
/// the user is invalid according to cam no permissions are cached.
/// </summary>
/// <param name="user">The user to return cache for.</param>
/// <returns>The user's cache.</returns>
public async Task <UserCache> GetUserCacheAsync(IWebApiUser user)
{
Contract.Requires(user != null, "The user must not be null.");
var userCache = cacheService.GetUserCache(user);
logger.Info("User [{0}] is cached: {1}.", user, userCache != null);
if (userCache == null)
{
logger.Info("Caching user [{0}] information.", user);
var camUser = await userService.GetUserByIdAsync(user.Id);
var isValidUser = false;
IEnumerable <IPermission> permissions = new List <IPermission>();
if (camUser != null)
{
isValidUser = await userService.IsUserValidAsync(user.Id);
if (isValidUser)
{
permissions = await GetUserPermissionsAsync(camUser.PrincipalId);
}
}
else
{
camUser = new User();
}
userCache = new UserCache(user, camUser, isValidUser, permissions);
cacheService.Add(userCache);
return(userCache);
}
else
{
return(userCache);
}
}
