示例#1
0
        private async Task <UserEntry> AuthenticateByOneDB(string email, string tenantID, ClusterContext db, UserID userID)
        {
            var priorEntrys = db.User.Where(b => b.Email == email).ToAsyncEnumerable();

            long      nEntry = 0;
            UserEntry ret    = null;
            // Prior entry exists?
            await priorEntrys.ForEachAsync(entry =>
            {
                // We will not update existing entry in database.
                // db.Entry(entry).CurrentValues.SetValues(userEntry);
                ret = entry;
                Interlocked.Add(ref nEntry, 1);
            }
                                           );

            if (Interlocked.Read(ref nEntry) == 0)
            {
                if (!Object.ReferenceEquals(userID, null))
                {
                    string    password  = Guid.NewGuid().ToString().Substring(0, 8);
                    UserEntry userEntry = new UserEntry(userID, email, email, password);
                    await db.User.AddAsync(userEntry);

                    await db.SaveChangesAsync();

                    return(userEntry);
                }
                else
                {
                    return(null);
                }
            }
            else
            {
                // Prior entry exists, we use the database as the authorative source.
                UserEntry newEntry = ret;
                // Update is AuthorizedEntry only, other entry will be updated by database.
                if (!Object.ReferenceEquals(userID, null))
                {
                    bool bUpdate = false;

                    if (String.Compare(ret.isAuthorized, userID.isAuthorized, true) < 0 || String.Compare(ret.isAdmin, userID.isAdmin, true) < 0)
                    {
                        // userID isAuthorized is true
                        newEntry.isAuthorized = userID.isAuthorized;
                        newEntry.isAdmin      = userID.isAdmin;
                        newEntry.uid          = userID.uid;
                        newEntry.gid          = userID.gid;

                        bUpdate = true;
                    }

                    if (bUpdate)
                    {
                        db.Entry(ret).CurrentValues.SetValues(newEntry);
                        await db.SaveChangesAsync();
                    }
                }
                if (newEntry.Alias != newEntry.Email)
                {
                    return(await AuthenticateByOneDB(newEntry.Alias, tenantID, db, userID));
                }
                else
                {
                    return(newEntry);
                }
            }
        }