// Notification raised after ADAL accessed the cache. // If the HasStateChanged flag is set, ADAL changed the content of the cache private void AfterAccessNotification(TokenCacheNotificationArgs args) { // if state changed if (this.HasStateChanged) { // retrieve last write from the DB _cache = TokenCacheEntries.FirstOrDefault(e => e.userObjId == _userObjId); if (_cache == null) { _cache = new TokenCacheEntry { userObjId = _userObjId, }; } _cache.LastWrite = DateTime.Now; _cache.cacheBits = Serialize(); TokenCacheEntries.RemoveAll(e => e.userObjId == _userObjId); TokenCacheEntries.Add(_cache); //// update the DB and the lastwrite //db.Entry(Cache).State = Cache.TokenCacheEntryID == 0 ? EntityState.Added : EntityState.Modified; //db.SaveChanges(); this.HasStateChanged = false; } }
public InMemoryTokenCache(string userObjectId) { // associate the cache to the current user of the web app _userObjId = userObjectId; this.AfterAccess = AfterAccessNotification; this.BeforeAccess = BeforeAccessNotification; this.BeforeWrite = BeforeWriteNotification; // look up the entry in the DB _cache = TokenCacheEntries.FirstOrDefault(c => c.userObjId == _userObjId); // place the entry in memory Deserialize(_cache?.cacheBits); }
// Notification raised before ADAL accesses the cache. // This is your chance to update the in-memory copy from the DB, if the in-memory version is stale private void BeforeAccessNotification(TokenCacheNotificationArgs args) { if (_cache == null) { // first time access _cache = TokenCacheEntries.FirstOrDefault(c => c.userObjId == _userObjId); } else { // retrieve last write from the DB var dbCache = TokenCacheEntries.FirstOrDefault(c => c.userObjId == _userObjId); // if the in-memory copy is older than the persistent copy, update the in-memory copy if (dbCache.LastWrite > _cache.LastWrite) { _cache = dbCache; } } Deserialize(_cache?.cacheBits); }