=> TimeSpan.FromSeconds(10); // TODO read from config
protected override Task <bool> ValidateAuthenticationStateAsync(AuthenticationState authenticationState, CancellationToken cancellationToken)
{
var sid =
authenticationState.User.Claims
.Where(c => c.Type.Equals("sid"))
.Select(c => c.Value)
.FirstOrDefault();
if (sid != null && Cache.HasSubjectId(sid))
{
var data = Cache.Get(sid);
System.Diagnostics.Debug.WriteLine($"NowUtc: {DateTimeOffset.UtcNow.ToString("o")}");
System.Diagnostics.Debug.WriteLine($"ExpUtc: {data.Expiration.ToString("o")}");
if (DateTimeOffset.UtcNow >= data.Expiration)
{
System.Diagnostics.Debug.WriteLine($"*** EXPIRED ***");
Cache.Remove(sid);
return(Task.FromResult(false));
}
}
else
{
System.Diagnostics.Debug.WriteLine($"(not in cache)");
}
return(Task.FromResult(true));
}
public async Task <string> GetAccessToken()
{
// 获取当前用户的sid唯一标志
var state = await _authenticationState.GetAuthenticationStateAsync();
var sid = state.User.Claims
.Where(c => c.Type.Equals("sid"))
.Select(c => c.Value)
.FirstOrDefault();
// 正常，则返回结果
if (sid != null && _cache.HasSubjectId(sid))
{
return(_cache.Get(sid).AccessToken);
}
// 否则，跳转登录页，去认证中心拉取
_navigationManager.NavigateTo("/Login", true);
return(await Task.FromResult(string.Empty));
}
