/// <summary>
/// Note these claims don't get saved in the cookie.
/// </summary>
public async Task <ClaimsPrincipal> TransformAsync(ClaimsPrincipal principal)
{
if (!principal.Identity.IsAuthenticated || _isTransformed)
{
return(await Task.FromResult(principal));
}
var currentPrincipal = (ClaimsIdentity)principal.Identity;
var currentClaims = currentPrincipal.Claims.ToList();
var nameIdentifier = Guid.Parse(principal.FindFirstValue(ClaimTypes.NameIdentifier));
if (!Cache.TryGetValue(nameIdentifier, out List <Claim> claims))
{
claims = await ClaimsService.GenerateClaims(currentClaims);
Cache.Set(nameIdentifier, claims, DateTimeOffset.UtcNow.Add(ClaimCachePeriod));
}
currentPrincipal.AddClaims(claims);
_isTransformed = true;
return(await Task.FromResult(principal));
}
public ClaimsTransformer(IMemoryCache cache, ClaimsService claimsService, IConfiguration configuration)
{
Cache = cache;
ClaimsService = claimsService;
ClaimCachePeriod = TimeSpan.Parse(configuration.GetNonEmptyValue("ClaimsCachePeriod"));
}