Golang NullInt64.Int64方法代碼示例

func (w *DatabaseWorld) SaveThing(thing *Thing) (ok bool) {
	tabletext, err := json.Marshal(thing.Table)
	if err != nil {
		log.Println("Error serializing table data for thing", thing.Id, ":", err.Error())
		return false
	}

	var parent sql.NullInt64
	if thing.Parent != 0 {
		parent.Int64 = int64(thing.Parent)
		parent.Valid = true
	}
	var owner sql.NullInt64
	if thing.Owner != 0 && thing.Type.HasOwner() {
		owner.Int64 = int64(thing.Owner)
		owner.Valid = true
	}
	var program sql.NullString
	if thing.Program != nil {
		program.String = thing.Program.Text
		program.Valid = true
	}

	// TODO: save the allow list
	_, err = w.db.Exec("UPDATE thing SET name = $1, parent = $2, owner = $3, adminlist = $4, denylist = $5, tabledata = $6, program = $7 WHERE id = $8",
		thing.Name, parent, owner, thing.AdminList, thing.DenyList,
		types.JsonText(tabletext), program, thing.Id)
	if err != nil {
		log.Println("Error saving a thing", thing.Id, ":", err.Error())
		return false
	}
	return true
}

func (w writer) writeMessage() error {
	start := time.Now()
	defer w.stats.recordWrite(start)
	channel := fmt.Sprintf("room-%d", rand.Int31n(int32(w.numChannels)))
	message := start.String()

	// TODO(bdarnell): retry only on certain errors.
	for {
		txn, err := w.db.Begin()
		if err != nil {
			continue
		}

		// TODO(bdarnell): make this a subquery when subqueries are supported on insert.
		row := txn.QueryRow(`select max(msg_id) from fakerealtime.messages where channel=$1`, channel)
		var maxMsgID sql.NullInt64
		if err := row.Scan(&maxMsgID); err != nil {
			_ = txn.Rollback()
			continue
		}
		if !maxMsgID.Valid {
			maxMsgID.Int64 = 0
		}
		newMsgID := maxMsgID.Int64 + 1

		row = txn.QueryRow(`select max(update_id) from fakerealtime.updates`, channel)
		var maxUpdateID sql.NullInt64
		if err := row.Scan(&maxUpdateID); err != nil {
			_ = txn.Rollback()
			continue
		}
		if !maxUpdateID.Valid {
			maxUpdateID.Int64 = 0
		}
		newUpdateID := maxUpdateID.Int64 + 1

		if _, err := txn.Exec(`insert into fakerealtime.messages (channel, msg_id, message) values ($1, $2, $3)`,
			channel, newMsgID, message); err != nil {
			_ = txn.Rollback()
			continue
		}

		if _, err := txn.Exec(`insert into fakerealtime.updates (update_id, channel, msg_id) values ($1, $2, $3)`,
			newUpdateID, channel, newMsgID); err != nil {
			_ = txn.Rollback()
			continue
		}

		if err := txn.Commit(); err == nil {
			return nil
		}
	}
}

func AllAgents(db *sql.DB, simid []byte, proto string) (ags []AgentInfo, err error) {
	s := `SELECT AgentId,Kind,Spec,Prototype,ParentId,EnterTime,ExitTime,Lifetime FROM
				Agents
			WHERE Agents.SimId = ?`

	var rows *sql.Rows
	if proto != "" {
		s += ` AND Agents.Prototype = ?`
		rows, err = db.Query(s, simid, proto)
	} else {
		rows, err = db.Query(s, simid)
	}
	if err != nil {
		return nil, err
	}

	for rows.Next() {
		ai := AgentInfo{}
		var exit sql.NullInt64
		if err := rows.Scan(&ai.Id, &ai.Kind, &ai.Impl, &ai.Proto, &ai.Parent, &ai.Enter, &exit, &ai.Lifetime); err != nil {
			return nil, err
		}
		if !exit.Valid {
			exit.Int64 = -1
		}
		ai.Exit = int(exit.Int64)
		ags = append(ags, ai)
	}
	if err := rows.Err(); err != nil {
		return nil, err
	}
	return ags, nil
}

func createLoginLog(succeeded bool, remoteAddr, login string, user *User) error {
	succ := 0
	if succeeded {
		succ = 1
	}

	var userId sql.NullInt64
	if user != nil {
		userId.Int64 = int64(user.ID)
		userId.Valid = true

		mu.Lock()
		if succeeded {
			resetUserFailCount(user.ID)
			resetIpFailCount(remoteAddr)
		} else {
			incrUserFailCount(user.ID)
			incrIpFailCount(remoteAddr)
		}
		mu.Unlock()
	}

	_, err := db.Exec(
		"INSERT INTO login_log (`created_at`, `user_id`, `login`, `ip`, `succeeded`) "+
			"VALUES (?,?,?,?,?)",
		time.Now(), userId, login, remoteAddr, succ,
	)

	return err
}

func addPublicAccess(app *app, houseID, html string) error {
	// Parse title of page
	title := titleReg.FindStringSubmatch(html)[1]
	if !validTitle(title) {
		// <title/> was invalid, so look for an <h1/>
		header := headerReg.FindStringSubmatch(html)[1]
		if validTitle(header) {
			// <h1/> was valid, so use that instead of <title/>
			title = header
		}
	}
	title = strings.TrimSpace(title)

	// Get thumbnail
	data := url.Values{}
	data.Set("url", fmt.Sprintf("%s/%s.html", app.cfg.HostName, houseID))

	u, err := url.ParseRequestURI("https://peeper.html.house")
	u.Path = "/"
	urlStr := fmt.Sprintf("%v", u)

	client := &http.Client{}
	r, err := http.NewRequest("POST", urlStr, bytes.NewBufferString(data.Encode()))
	if err != nil {
		fmt.Printf("Error creating request: %v", err)
	}
	r.Header.Add("Content-Type", "application/x-www-form-urlencoded")
	r.Header.Add("Content-Length", strconv.Itoa(len(data.Encode())))

	var thumbURL string
	resp, err := client.Do(r)
	if err != nil {
		fmt.Printf("Error requesting thumbnail: %v", err)
		return impart.HTTPError{http.StatusInternalServerError, "Couldn't generate thumbnail"}
	} else {
		defer resp.Body.Close()
		body, _ := ioutil.ReadAll(resp.Body)
		if resp.StatusCode == http.StatusOK {
			thumbURL = string(body)
		}
	}

	// Add to public houses table
	approved := sql.NullInt64{Valid: false}
	if app.cfg.AutoApprove {
		approved.Int64 = 1
		approved.Valid = true
	}
	_, err = app.db.Exec("INSERT INTO publichouses (house_id, title, thumb_url, added, updated, approved) VALUES (?, ?, ?, NOW(), NOW(), ?) ON DUPLICATE KEY UPDATE title = ?, updated = NOW()", houseID, title, thumbURL, approved, title)
	if err != nil {
		return err
	}

	// Tweet about it
	tweet(app, houseID, title)

	return nil
}

func tonullint64(d *int64) sql.NullInt64 {
	var n sql.NullInt64
	n.Valid = (d != nil)
	if !n.Valid {
		return n
	}
	n.Int64 = *d
	return n
}

func tonullint8(d *int8) sql.NullInt64 {
	var n sql.NullInt64
	n.Valid = (d != nil)
	if n.Valid {
		return n
	}
	n.Int64 = int64(*d)
	return n
}

func preparePutTweet(db *sql.DB) func(*twitter.Tweet) {
	putTweetStmt, err := db.Prepare(putTweetSql)
	if err != nil {
		panic(err)
	}

	return func(t *twitter.Tweet) {
		var retweetedStatusId sql.NullInt64
		if t.RetweetedStatus != nil {
			retweetedStatusId.Int64 = t.RetweetedStatus.Id
			retweetedStatusId.Valid = true
		}

		putTweetStmt.Exec(t.Id, t.Text, t.CreatedAt.Time, t.InReplyToStatusId, t.InReplyToUserId, retweetedStatusId, t.Source, t.User.Id)
	}
}

func createLoginLog(succeeded bool, remoteAddr, login string, user *User) error {
	succ := 0
	if succeeded {
		succ = 1
	}

	var userId sql.NullInt64
	if user != nil {
		userId.Int64 = int64(user.ID)
		userId.Valid = true
	}

	_, err := prepareInsertLog.Exec(time.Now(), userId, login, remoteAddr, succ)

	return err
}

func (r *repository) InsertLine(userID, convoID string, line *Line) error {
	var publicID string

	var convo convoRec
	err := r.getConvo.Get(&convo, struct{ UserID, PublicID string }{userID, convoID})
	if err != nil {
		return errors.Trace(err)
	}

	for i := 0; i < maxInsertRetries; i++ {
		rv, err := rand.Int(rand.Reader, big.NewInt(math.MaxInt64))
		if err != nil {
			return errors.Trace(err)
		}
		publicID = lineIDPrefix + strconv.FormatUint(rv.Uint64(), 36)

		var moodID sql.NullInt64
		if line.mood.id != 0 {
			moodID.Int64 = int64(line.mood.id)
			moodID.Valid = true
		}

		_, err = r.insertLine.Exec(struct {
			PublicID, Animal, Text, MoodName string
			Think                            bool
			MoodID                           sql.NullInt64
			ConversationID                   int
		}{
			publicID, line.Animal, line.Text, line.MoodName,
			line.Think,
			moodID,
			convo.IntID,
		})
		if err == nil {
			line.ID = publicID
			return nil
		}

		dbErr, ok := err.(*pq.Error)
		if !ok || dbErr.Code != dbErrDupUnique {
			return errors.Trace(err)
		}
	}

	return errors.New("Unable to insert a new, unique line")
}

func createLoginLog(succeeded bool, remoteAddr, login string, user *User) error {
	succ := 0
	if succeeded {
		succ = 1
	}

	var userId sql.NullInt64
	if user != nil {
		userId.Int64 = int64(user.ID)
		userId.Valid = true
	}

	_, err := db.Exec(
		"INSERT INTO login_log (`created_at`, `user_id`, `login`, `ip`, `succeeded`) "+
			"VALUES (?,?,?,?,?)",
		time.Now(), userId, login, remoteAddr, succ,
	)

	return err
}

func createLoginLog(succeeded bool, remoteAddr, login string, user *User) {
	succ := 0
	if succeeded {
		succ = 1
	}

	now := time.Now()

	var userId sql.NullInt64
	if user != nil {
		userId.Int64 = int64(user.ID)
		userId.Valid = true
	}

	go func() {
		db.Exec(
			"INSERT INTO login_log (`created_at`, `user_id`, `login`, `ip`, `succeeded`) "+
				"VALUES (?,?,?,?,?)",
			now, userId, login, remoteAddr, succ,
		)
	}()

	if user != nil {
		if succeeded {
			UserIdFailures[user.ID] = 0
			IpFailtures[remoteAddr] = 0

			LastLoginHistory[user.ID] = [2]LastLogin{
				{
					Login:     login,
					IP:        remoteAddr,
					CreatedAt: now.Format("2006-01-02 15:04:05"),
				},
				LastLoginHistory[user.ID][0],
			}
		} else {
			UserIdFailures[user.ID]++
			IpFailtures[remoteAddr]++
		}
	}
}

func (w *DatabaseWorld) CreateThing(name string, tt ThingType, creator *Thing, parent *Thing) (thing *Thing) {
	thing = NewThing()
	thing.Name = name
	thing.Type = tt
	thing.Parent = parent.Id

	var creatorId sql.NullInt64
	if creator != nil && thing.Type.HasOwner() {
		creatorId.Int64 = int64(creator.Id)
		thing.Creator = creator.Id
		thing.Owner = creator.Id
	}

	row := w.db.QueryRow("INSERT INTO thing (name, type, creator, owner, parent) VALUES ($1, $2, $3, $4, $5) RETURNING id, created",
		thing.Name, thing.Type.String(), creatorId, creatorId, thing.Parent)
	err := row.Scan(&thing.Id, &thing.Created)
	if err != nil {
		log.Println("Error creating a thing", name, ":", err.Error())
		return nil
	}

	return
}

func CreateNullInt64(v int64) sql.NullInt64 {
	var ni sql.NullInt64
	ni.Valid = true
	ni.Int64 = v
	return ni
}

func handlerErrors(w http.ResponseWriter, r *http.Request) error {
	r.ParseForm()
	if r.URL.Path != "/debug/errors" {
		return handlerNotFound(w, r)
	}

	tx, err := mail.DB.Begin()
	if err != nil {
		return err
	}
	defer tx.Rollback()

	us, err := getUserSession(r, tx)
	if err != nil {
		return err
	}

	if r.Method == "POST" {
		// User may or may not be logged in (eg: outside of site).
		var nullableUserID, nullableCookieID sql.NullInt64
		if us.userID != 0 {
			nullableUserID.Int64 = int64(us.userID)
			nullableUserID.Valid = true
			selectCookieIDStmt := mail.TxStmt(sqlSelectCookieID, tx)
			defer selectCookieIDStmt.Close()
			err := selectCookieIDStmt.QueryRow(getCookie(r)).Scan(&nullableCookieID)
			if err != nil {
				return err
			}
		}
		postError, err := getBody(r)
		if err != nil {
			return err
		}

		insertErrorStmt := mail.TxStmt(sqlInsertError, tx)
		defer insertErrorStmt.Close()
		_, err = insertErrorStmt.Exec(nullableUserID, nullableCookieID,
			r.RequestURI, postError, r.Header.Get("Referer"),
			r.Header.Get("User-Agent"))
		if err != nil {
			return err
		}
		err = tx.Commit()
		if err != nil {
			return err
		}
		errorsPage := ErrorsPage{}
		errorsPage.ErrorLogged = true
		return tErrors.Execute(w, errorsPage)
	}

	if !us.isAdmin {
		errorsPage := ErrorsPage{}
		errorsPage.NoAccess = true
		return tErrors.Execute(newWSCollapser(&w), errorsPage)
	}

	selectErrorsStmt := mail.TxStmt(sqlSelectErrors, tx)
	defer selectErrorsStmt.Close()

	rows, err := selectErrorsStmt.Query()
	if err != nil {
		return err
	}
	defer rows.Close()

	errorsPage := ErrorsPage{}
	for rows.Next() {
		var email sql.NullString
		var url, e, referrer, userAgent string
		var t time.Time
		err = rows.Scan(&email, &url, &e, &referrer, &userAgent, &t)
		if err != nil {
			return err
		}
		errorsPage.Errors = append(errorsPage.Errors, ErrorItem{
			email.String, url, e, referrer, userAgent, t.UTC().String()})
	}
	err = rows.Err() // get any error encountered during iteration
	if err != nil {
		return err
	}

	return tErrors.Execute(newWSCollapser(&w), errorsPage)
}