public IDictionary <string, UserGroupRef> GetUserGroupRefs(int tenant, DateTime from) { GetChangesFromDb(); var key = UserServiceCache.GetRefCacheKey(tenant); if (!(Cache.Get <UserGroupRefStore>(key) is IDictionary <string, UserGroupRef> refs)) { refs = Service.GetUserGroupRefs(tenant, default); Cache.Insert(key, new UserGroupRefStore(refs), CacheExpiration); } lock (refs) { return(from == default ? refs : refs.Values.Where(r => r.LastModified >= from).ToDictionary(r => r.CreateKey())); } }
private void GetChangesFromDb() { if (!TrustInterval.Expired) { return; } if (Interlocked.CompareExchange(ref getchanges, 1, 0) == 0) { try { if (!TrustInterval.Expired) { return; } var starttime = TrustInterval.StartTime; if (starttime != default) { var correction = TimeSpan.FromTicks(DbExpiration.Ticks * 3); starttime = TrustInterval.StartTime.Subtract(correction); } TrustInterval.Start(DbExpiration); //get and merge changes in cached tenants foreach (var tenantGroup in Service.GetUsers(Tenant.DEFAULT_TENANT, starttime).Values.GroupBy(u => u.Tenant)) { var users = Cache.Get <IDictionary <Guid, UserInfo> >(UserServiceCache.GetUserCacheKey(tenantGroup.Key)); if (users != null) { lock (users) { foreach (var u in tenantGroup) { users[u.ID] = u; } } } } foreach (var tenantGroup in Service.GetGroups(Tenant.DEFAULT_TENANT, starttime).Values.GroupBy(g => g.Tenant)) { var groups = Cache.Get <IDictionary <Guid, Group> >(UserServiceCache.GetGroupCacheKey(tenantGroup.Key)); if (groups != null) { lock (groups) { foreach (var g in tenantGroup) { groups[g.Id] = g; } } } } foreach (var tenantGroup in Service.GetUserGroupRefs(Tenant.DEFAULT_TENANT, starttime).Values.GroupBy(r => r.Tenant)) { var refs = Cache.Get <UserGroupRefStore>(UserServiceCache.GetRefCacheKey(tenantGroup.Key)); if (refs != null) { lock (refs) { foreach (var r in tenantGroup) { refs[r.CreateKey()] = r; } } } } } finally { Volatile.Write(ref getchanges, 0); } } }