Golang Uid.String方法代码示例

func (a *RethinkDbAdapter) UserUpdateStatus(uid t.Uid, status interface{}) error {
	update := map[string]interface{}{"Status": status}

	_, err := rdb.DB(a.dbName).Table("users").Get(uid.String()).
		Update(update, rdb.UpdateOpts{Durability: "soft"}).RunWrite(a.conn)

	return err
}

// Get a subscription of a user to a topic
func (a *RethinkDbAdapter) SubscriptionGet(topic string, user t.Uid) (*t.Subscription, error) {

	rows, err := rdb.DB(a.dbName).Table("subscriptions").Get(topic + ":" + user.String()).Run(a.conn)
	if err != nil {
		return nil, err
	}

	var sub t.Subscription
	err = rows.One(&sub)
	return &sub, rows.Err()
}

func (a *RethinkDbAdapter) UserUpdateLastSeen(uid t.Uid, userAgent string, when time.Time) error {
	update := struct {
		LastSeen  time.Time
		UserAgent string
	}{when, userAgent}

	_, err := rdb.DB(a.dbName).Table("users").Get(uid.String()).
		Update(update, rdb.UpdateOpts{Durability: "soft"}).RunWrite(a.conn)

	return err
}

// UserGet fetches a single user by user id. If user is not found it returns (nil, nil)
func (a *RethinkDbAdapter) UserGet(uid t.Uid) (*t.User, error) {
	if row, err := rdb.DB(a.dbName).Table("users").Get(uid.String()).Run(a.conn); err == nil && !row.IsNil() {
		var user t.User
		if err = row.One(&user); err == nil {
			return &user, nil
		}
		return nil, err
	} else {
		// If user does not exist, it returns nil, nil
		return nil, err
	}
}

// Add user's authentication record
func (a *RethinkDbAdapter) AddAuthRecord(uid t.Uid, unique string, secret []byte, expires time.Time) (error, bool) {
	_, err := rdb.DB(a.dbName).Table("auth").Insert(
		map[string]interface{}{
			"unique":  unique,
			"userid":  uid.String(),
			"secret":  secret,
			"expires": expires}).RunWrite(a.conn)
	if err != nil {
		if rdb.IsConflictErr(err) {
			return errors.New("duplicate credential"), true
		}
		return err, false
	}
	return nil, false
}

// SubsForUser loads a list of user's subscriptions to topics
func (a *RethinkDbAdapter) SubsForUser(forUser t.Uid) ([]t.Subscription, error) {
	if forUser.IsZero() {
		return nil, errors.New("RethinkDb adapter: invalid user ID in TopicGetAll")
	}

	q := rdb.DB(a.dbName).Table("subscriptions").GetAllByIndex("User", forUser.String()).Limit(MAX_RESULTS)

	rows, err := q.Run(a.conn)
	if err != nil {
		return nil, err
	}

	var subs []t.Subscription
	var ss t.Subscription
	for rows.Next(&ss) {
		subs = append(subs, ss)
	}
	return subs, rows.Err()
}

// Create creates a topic and owner's subscription to topic
func (TopicsObjMapper) Create(topic *types.Topic, owner types.Uid, private interface{}) error {

	topic.InitTimes()

	err := adaptr.TopicCreate(topic)
	if err != nil {
		return err
	}

	if !owner.IsZero() {
		err = Subs.Create(&types.Subscription{
			ObjHeader: types.ObjHeader{CreatedAt: topic.CreatedAt},
			User:      owner.String(),
			Topic:     topic.Name,
			ModeGiven: types.ModeFull,
			ModeWant:  topic.GetAccess(owner),
			Private:   private})
	}

	return err
}

// approveSub processes a request to initiate an invite or approve a subscription request from another user:
// Handle these cases:
// A. Manager is inviting another user for the first time (no prior subscription)
// B. Manager is re-inviting another user (adjusting modeGiven, modeWant is still "N")
// C. Manager is changing modeGiven for another user, modeWant != "N"
func (t *Topic) approveSub(h *Hub, sess *Session, target types.Uid, set *MsgClientSet) error {
	now := time.Now().UTC().Round(time.Millisecond)

	// Check if requester actually has permission to manage sharing
	if userData, ok := t.perUser[sess.uid]; !ok || !userData.modeGiven.IsManager() || !userData.modeWant.IsManager() {
		sess.queueOut(ErrPermissionDenied(set.Id, t.original, now))
		return errors.New("topic access denied")
	}

	// Parse the access mode granted
	var modeGiven types.AccessMode
	if set.Sub.Mode != "" {
		modeGiven.UnmarshalText([]byte(set.Sub.Mode))
	}

	// If the user is banned from topic, make sute it's the only change
	if modeGiven.IsBanned() {
		modeGiven = types.ModeBanned
	}

	// Make sure no one but the owner can do an ownership transfer
	if modeGiven.IsOwner() && t.owner != sess.uid {
		sess.queueOut(ErrPermissionDenied(set.Id, t.original, now))
		return errors.New("attempt to transfer ownership by non-owner")
	}

	var givenBefore types.AccessMode
	// Check if it's a new invite. If so, save it to database as a subscription.
	// Saved subscription does not mean the user is allowed to post/read
	userData, ok := t.perUser[target]
	if !ok {
		if modeGiven == types.ModeNone {
			if t.accessAuth != types.ModeNone {
				// Request to use default access mode for the new subscriptions.
				modeGiven = t.accessAuth
			} else {
				sess.queueOut(ErrMalformed(set.Id, t.original, now))
				return errors.New("cannot invite without giving any access rights")
			}
		}

		// Add subscription to database
		sub := &types.Subscription{
			User:      target.String(),
			Topic:     t.name,
			ModeWant:  types.ModeNone,
			ModeGiven: modeGiven,
		}

		if err := store.Subs.Create(sub); err != nil {
			sess.queueOut(ErrUnknown(set.Id, t.original, now))
			return err
		}

		userData = perUserData{
			modeGiven: sub.ModeGiven,
			modeWant:  sub.ModeWant,
			private:   nil,
		}

		t.perUser[target] = userData

	} else {
		// Action on an existing subscription (re-invite or confirm/decline)
		givenBefore = userData.modeGiven

		// Request to re-send invite without changing the access mode
		if modeGiven == types.ModeNone {
			modeGiven = userData.modeGiven
		} else if modeGiven != userData.modeGiven {
			userData.modeGiven = modeGiven

			// Save changed value to database
			if err := store.Subs.Update(t.name, sess.uid,
				map[string]interface{}{"ModeGiven": modeGiven}); err != nil {
				return err
			}

			t.perUser[target] = userData
		}
	}

	// The user does not want to be bothered, no further action is needed
	if userData.modeWant.IsBanned() {
		sess.queueOut(ErrPermissionDenied(set.Id, t.original, now))
		return errors.New("topic access denied")
	}

	// Handle the following cases:
	// * a ban of the user, modeGive.IsBanned = true (if user is banned no need to invite anyone)
	// * regular invite: modeWant = "N", modeGiven > 0
	// * access rights update: old modeGiven != new modeGiven
	if !modeGiven.IsBanned() {
		if userData.modeWant == types.ModeNone {
			// (re-)Send the invite to target
//.........这里部分代码省略.........

// SubsDelete deletes a subscription.
func (a *RethinkDbAdapter) SubsDelete(topic string, user t.Uid) error {
	_, err := rdb.DB(a.dbName).Table("subscriptions").Get(topic + ":" + user.String()).Delete().RunWrite(a.conn)
	return err
}

// SubsUpdate updates a single subscription.
func (a *RethinkDbAdapter) SubsUpdate(topic string, user t.Uid, update map[string]interface{}) error {
	_, err := rdb.DB(a.dbName).Table("subscriptions").Get(topic + ":" + user.String()).Update(update).RunWrite(a.conn)
	return err
}

// Update time when the user was last attached to the topic
func (a *RethinkDbAdapter) SubsLastSeen(topic string, user t.Uid, lastSeen map[string]time.Time) error {
	_, err := rdb.DB(a.dbName).Table("subscriptions").Get(topic+":"+user.String()).
		Update(map[string]interface{}{"LastSeen": lastSeen}, rdb.UpdateOpts{Durability: "soft"}).RunWrite(a.conn)

	return err
}

// TopicsForUser loads user's contact list: p2p and grp topics, except for 'me' subscription.
func (a *RethinkDbAdapter) TopicsForUser(uid t.Uid) ([]t.Subscription, error) {
	// Fetch user's subscriptions
	// Subscription have Topic.UpdatedAt denormalized into Subscription.UpdatedAt
	q := rdb.DB(a.dbName).Table("subscriptions").GetAllByIndex("User", uid.String()).Limit(MAX_RESULTS)
	//log.Printf("RethinkDbAdapter.TopicsForUser q: %+v", q)
	rows, err := q.Run(a.conn)
	if err != nil {
		return nil, err
	}

	// Fetch subscriptions. Two queries are needed: users table (me & p2p) and topics table (p2p and grp).
	// Prepare a list of Separate subscriptions to users vs topics
	var sub t.Subscription
	join := make(map[string]t.Subscription) // Keeping these to make a join with table for .private and .access
	topq := make([]interface{}, 0, 16)
	usrq := make([]interface{}, 0, 16)
	for rows.Next(&sub) {
		tcat := t.GetTopicCat(sub.Topic)

		// 'me' subscription, skip
		if tcat == t.TopicCat_Me || tcat == t.TopicCat_Fnd {
			continue

			// p2p subscription, find the other user to get user.Public
		} else if tcat == t.TopicCat_P2P {
			uid1, uid2, _ := t.ParseP2P(sub.Topic)
			if uid1 == uid {
				usrq = append(usrq, uid2.String())
			} else {
				usrq = append(usrq, uid1.String())
			}
			topq = append(topq, sub.Topic)

			// grp subscription
		} else {
			topq = append(topq, sub.Topic)
		}
		join[sub.Topic] = sub
	}

	//log.Printf("RethinkDbAdapter.TopicsForUser topq, usrq: %+v, %+v", topq, usrq)
	var subs []t.Subscription
	if len(topq) > 0 || len(usrq) > 0 {
		subs = make([]t.Subscription, 0, len(join))
	}

	if len(topq) > 0 {
		// Fetch grp & p2p topics
		rows, err = rdb.DB(a.dbName).Table("topics").GetAll(topq...).Run(a.conn)
		if err != nil {
			return nil, err
		}

		var top t.Topic
		for rows.Next(&top) {
			sub = join[top.Id]
			sub.ObjHeader.MergeTimes(&top.ObjHeader)
			sub.SetSeqId(top.SeqId)
			sub.SetHardClearId(top.ClearId)
			if t.GetTopicCat(sub.Topic) == t.TopicCat_Grp {
				// all done with a grp topic
				sub.SetPublic(top.Public)
				subs = append(subs, sub)
			} else {
				// put back the updated value of a p2p subsription, will process further below
				join[top.Id] = sub
			}
		}

		//log.Printf("RethinkDbAdapter.TopicsForUser 1: %#+v", subs)
	}

	// Fetch p2p users and join to p2p tables
	if len(usrq) > 0 {
		rows, err = rdb.DB(a.dbName).Table("users").GetAll(usrq...).Run(a.conn)
		if err != nil {
			return nil, err
		}

		var usr t.User
		for rows.Next(&usr) {
			uid2 := t.ParseUid(usr.Id)
			topic := uid.P2PName(uid2)
			if sub, ok := join[topic]; ok {
				sub.ObjHeader.MergeTimes(&usr.ObjHeader)
				sub.SetWith(uid2.UserId())
				sub.SetPublic(usr.Public)
				sub.SetLastSeenAndUA(usr.LastSeen, usr.UserAgent)
				subs = append(subs, sub)
			}
		}

		//log.Printf("RethinkDbAdapter.TopicsForUser 2: %#+v", subs)
	}

	return subs, nil
}

func (a *RethinkDbAdapter) UserUpdate(uid t.Uid, update map[string]interface{}) error {
	_, err := rdb.DB(a.dbName).Table("users").Get(uid.String()).Update(update).RunWrite(a.conn)
	return err
}

// Delete user's all authentication records
func (a *RethinkDbAdapter) DelAllAuthRecords(uid t.Uid) (int, error) {
	res, err := rdb.DB(a.dbName).Table("auth").GetAllByIndex("userid", uid.String()).Delete().RunWrite(a.conn)
	return res.Deleted, err
}