package bbgo import ( "bytes" "context" "fmt" "image/png" "io/ioutil" stdlog "log" "math/rand" "os" "strings" "sync" "time" "github.com/pkg/errors" "github.com/pquerna/otp" log "github.com/sirupsen/logrus" "github.com/slack-go/slack" "github.com/spf13/viper" "gopkg.in/tucnak/telebot.v2" "github.com/c9s/bbgo/pkg/exchange" "github.com/c9s/bbgo/pkg/fixedpoint" "github.com/c9s/bbgo/pkg/interact" "github.com/c9s/bbgo/pkg/notifier/slacknotifier" "github.com/c9s/bbgo/pkg/notifier/telegramnotifier" "github.com/c9s/bbgo/pkg/service" googleservice "github.com/c9s/bbgo/pkg/service/google" "github.com/c9s/bbgo/pkg/slack/slacklog" "github.com/c9s/bbgo/pkg/types" "github.com/c9s/bbgo/pkg/util" ) func init() { // randomize pulling rand.Seed(time.Now().UnixNano()) } var defaultSyncBufferPeriod = 30 * time.Minute // IsBackTesting is a global variable that indicates the current environment is back-test or not. var IsBackTesting = false var BackTestService *service.BacktestService func SetBackTesting(s *service.BacktestService) { BackTestService = s IsBackTesting = s != nil } var LoadedExchangeStrategies = make(map[string]SingleExchangeStrategy) var LoadedCrossExchangeStrategies = make(map[string]CrossExchangeStrategy) func RegisterStrategy(key string, s interface{}) { loaded := 0 if d, ok := s.(SingleExchangeStrategy); ok { LoadedExchangeStrategies[key] = d loaded++ } if d, ok := s.(CrossExchangeStrategy); ok { LoadedCrossExchangeStrategies[key] = d loaded++ } if loaded == 0 { panic(fmt.Errorf("%T does not implement SingleExchangeStrategy or CrossExchangeStrategy", s)) } } var emptyTime time.Time type SyncStatus int const ( SyncNotStarted SyncStatus = iota Syncing SyncDone ) // Environment presents the real exchange data layer type Environment struct { // built-in service DatabaseService *service.DatabaseService OrderService *service.OrderService TradeService *service.TradeService ProfitService *service.ProfitService PositionService *service.PositionService BacktestService *service.BacktestService RewardService *service.RewardService MarginService *service.MarginService SyncService *service.SyncService AccountService *service.AccountService WithdrawService *service.WithdrawService DepositService *service.DepositService PersistentService *service.PersistenceServiceFacade // external services GoogleSpreadSheetService *googleservice.SpreadSheetService // startTime is the time of start point (which is used in the backtest) startTime time.Time // syncStartTime is the time point we want to start the sync (for trades and orders) syncStartTime time.Time syncMutex sync.Mutex syncStatusMutex sync.Mutex syncStatus SyncStatus syncConfig *SyncConfig loggingConfig *LoggingConfig environmentConfig *EnvironmentConfig sessions map[string]*ExchangeSession } func NewEnvironment() *Environment { now := time.Now() return &Environment{ // default trade scan time syncStartTime: now.AddDate(-1, 0, 0), // defaults to sync from 1 year ago sessions: make(map[string]*ExchangeSession), startTime: now, syncStatus: SyncNotStarted, } } func (environ *Environment) Logger() log.FieldLogger { if environ.loggingConfig != nil && len(environ.loggingConfig.Fields) > 0 { return log.WithFields(environ.loggingConfig.Fields) } return log.StandardLogger() } func (environ *Environment) Session(name string) (*ExchangeSession, bool) { s, ok := environ.sessions[name] return s, ok } func (environ *Environment) Sessions() map[string]*ExchangeSession { return environ.sessions } func (environ *Environment) SetLogging(config *LoggingConfig) { environ.loggingConfig = config } func (environ *Environment) SelectSessions(names ...string) map[string]*ExchangeSession { if len(names) == 0 { return environ.sessions } sessions := make(map[string]*ExchangeSession) for _, name := range names { if s, ok := environ.Session(name); ok { sessions[name] = s } } return sessions } func (environ *Environment) ConfigureDatabase(ctx context.Context, config *Config) error { // configureDB configures the database service based on the environment variable var dbDriver string var dbDSN string var extraPkgNames []string if config != nil && config.DatabaseConfig != nil { dbDriver = config.DatabaseConfig.Driver dbDSN = config.DatabaseConfig.DSN extraPkgNames = config.DatabaseConfig.ExtraMigrationPackages } if val, ok := os.LookupEnv("DB_DRIVER"); ok { dbDriver = val } if val, ok := os.LookupEnv("DB_DSN"); ok { dbDSN = val } else if val, ok := os.LookupEnv("SQLITE3_DSN"); ok && (dbDriver == "" || dbDriver == "sqlite3") { dbDSN = val dbDriver = "sqlite3" } else if val, ok := os.LookupEnv("MYSQL_URL"); ok && (dbDriver == "" || dbDriver == "mysql") { dbDSN = val dbDriver = "mysql" } // database is optional if dbDriver == "" || dbDSN == "" { return nil } return environ.ConfigureDatabaseDriver(ctx, dbDriver, dbDSN, extraPkgNames...) } func (environ *Environment) ConfigureDatabaseDriver(ctx context.Context, driver string, dsn string, extraPkgNames ...string) error { environ.DatabaseService = service.NewDatabaseService(driver, dsn) environ.DatabaseService.AddMigrationPackages(extraPkgNames...) err := environ.DatabaseService.Connect() if err != nil { return err } if err := environ.DatabaseService.Upgrade(ctx); err != nil { return err } // get the db connection pool object to create other services db := environ.DatabaseService.DB environ.OrderService = &service.OrderService{DB: db} environ.TradeService = &service.TradeService{DB: db} environ.RewardService = &service.RewardService{DB: db} environ.AccountService = &service.AccountService{DB: db} environ.ProfitService = &service.ProfitService{DB: db} environ.PositionService = &service.PositionService{DB: db} environ.MarginService = &service.MarginService{DB: db} environ.WithdrawService = &service.WithdrawService{DB: db} environ.DepositService = &service.DepositService{DB: db} environ.SyncService = &service.SyncService{ TradeService: environ.TradeService, OrderService: environ.OrderService, RewardService: environ.RewardService, MarginService: environ.MarginService, WithdrawService: &service.WithdrawService{DB: db}, DepositService: &service.DepositService{DB: db}, } return nil } // AddExchangeSession adds the existing exchange session or pre-created exchange session func (environ *Environment) AddExchangeSession(name string, session *ExchangeSession) *ExchangeSession { environ.sessions[name] = session return session } // AddExchange adds the given exchange with the session name, this is the default func (environ *Environment) AddExchange(name string, exchange types.Exchange) (session *ExchangeSession) { session = NewExchangeSession(name, exchange) return environ.AddExchangeSession(name, session) } func (environ *Environment) ConfigureService(ctx context.Context, srvConfig *ServiceConfig) error { if srvConfig.GoogleSpreadSheetService != nil { environ.GoogleSpreadSheetService = googleservice.NewSpreadSheetService(ctx, srvConfig.GoogleSpreadSheetService.JsonTokenFile, srvConfig.GoogleSpreadSheetService.SpreadSheetID) } return nil } func (environ *Environment) ConfigureExchangeSessions(userConfig *Config) error { // if sessions are not defined, we detect the sessions automatically if len(userConfig.Sessions) == 0 { return environ.AddExchangesByViperKeys() } return environ.AddExchangesFromSessionConfig(userConfig.Sessions) } func (environ *Environment) AddExchangesByViperKeys() error { for _, n := range types.SupportedExchanges { if viper.IsSet(string(n) + "-api-key") { exMinimal, err := exchange.NewWithEnvVarPrefix(n, "") if err != nil { return err } if ex, ok := exMinimal.(types.Exchange); ok { environ.AddExchange(n.String(), ex) } else { log.Errorf("exchange %T does not implement types.Exchange", exMinimal) } } } return nil } func (environ *Environment) AddExchangesFromSessionConfig(sessions map[string]*ExchangeSession) error { for sessionName, session := range sessions { if err := session.InitExchange(sessionName, nil); err != nil { return err } environ.AddExchangeSession(sessionName, session) } return nil } func (environ *Environment) IsBackTesting() bool { return environ.BacktestService != nil } // Init prepares the data that will be used by the strategies func (environ *Environment) Init(ctx context.Context) (err error) { for n := range environ.sessions { var session = environ.sessions[n] if err = session.Init(ctx, environ); err != nil { // we can skip initialized sessions if err != ErrSessionAlreadyInitialized { return err } } } return } // Start initializes the symbols data streams func (environ *Environment) Start(ctx context.Context) (err error) { for n := range environ.sessions { var session = environ.sessions[n] if err = session.InitSymbols(ctx, environ); err != nil { return err } } return } func (environ *Environment) SetStartTime(t time.Time) *Environment { environ.startTime = t return environ } func (environ *Environment) StartTime() time.Time { return environ.startTime } // SetSyncStartTime overrides the default trade scan time (-7 days) func (environ *Environment) SetSyncStartTime(t time.Time) *Environment { environ.syncStartTime = t return environ } func (environ *Environment) BindSync(config *SyncConfig) { // skip this if we are running back-test if environ.BacktestService != nil { return } // If trade service is configured, we have the db configured if environ.TradeService == nil { return } if config == nil || config.UserDataStream == nil { return } environ.syncConfig = config tradeWriterCreator := func(session *ExchangeSession) func(trade types.Trade) { return func(trade types.Trade) { trade.IsMargin = session.Margin trade.IsFutures = session.Futures if session.Margin { trade.IsIsolated = session.IsolatedMargin } else if session.Futures { trade.IsIsolated = session.IsolatedFutures } // The StrategyID field and the PnL field needs to be updated by the strategy. // trade.StrategyID, trade.PnL if err := environ.TradeService.Insert(trade); err != nil { log.WithError(err).Errorf("trade insert error: %+v", trade) } } } orderWriterCreator := func(session *ExchangeSession) func(order types.Order) { return func(order types.Order) { order.IsMargin = session.Margin order.IsFutures = session.Futures if session.Margin { order.IsIsolated = session.IsolatedMargin } else if session.Futures { order.IsIsolated = session.IsolatedFutures } switch order.Status { case types.OrderStatusFilled, types.OrderStatusCanceled: if order.ExecutedQuantity.Sign() > 0 { if err := environ.OrderService.Insert(order); err != nil { log.WithError(err).Errorf("order insert error: %+v", order) } } } } } for _, session := range environ.sessions { // avoid using the iterator variable. s2 := session // if trade sync is on, we will write all received trades if config.UserDataStream.Trades { tradeWriter := tradeWriterCreator(s2) session.UserDataStream.OnTradeUpdate(tradeWriter) } if config.UserDataStream.FilledOrders { orderWriter := orderWriterCreator(s2) session.UserDataStream.OnOrderUpdate(orderWriter) } } } func (environ *Environment) Connect(ctx context.Context) error { log.Debugf("starting interaction...") if err := interact.Start(ctx); err != nil { return err } for n := range environ.sessions { // avoid using the placeholder variable for the session because we use that in the callbacks var session = environ.sessions[n] var logger = log.WithField("session", n) if len(session.Subscriptions) == 0 { logger.Warnf("exchange session %s has no subscriptions", session.Name) } else { // add the subscribe requests to the stream for _, s := range session.Subscriptions { logger.Infof("subscribing %s %s %v", s.Symbol, s.Channel, s.Options) session.MarketDataStream.Subscribe(s.Channel, s.Symbol, s.Options) } } logger.Infof("connecting %s market data stream...", session.Name) if err := session.MarketDataStream.Connect(ctx); err != nil { return err } if !session.PublicOnly { logger.Infof("connecting %s user data stream...", session.Name) if err := session.UserDataStream.Connect(ctx); err != nil { return err } } } return nil } func (environ *Environment) IsSyncing() (status SyncStatus) { environ.syncStatusMutex.Lock() status = environ.syncStatus environ.syncStatusMutex.Unlock() return status } func (environ *Environment) setSyncing(status SyncStatus) { environ.syncStatusMutex.Lock() environ.syncStatus = status environ.syncStatusMutex.Unlock() } func (environ *Environment) syncWithUserConfig(ctx context.Context, userConfig *Config) error { sessions := environ.sessions selectedSessions := userConfig.Sync.Sessions if len(selectedSessions) > 0 { sessions = environ.SelectSessions(selectedSessions...) } since := defaultSyncSinceTime() if userConfig.Sync.Since != nil { since = userConfig.Sync.Since.Time() } environ.SetSyncStartTime(since) syncSymbolMap, restSymbols := categorizeSyncSymbol(userConfig.Sync.Symbols) for _, session := range sessions { syncSymbols := restSymbols if ss, ok := syncSymbolMap[session.Name]; ok { syncSymbols = append(syncSymbols, ss...) } if err := environ.syncSession(ctx, session, since, syncSymbols...); err != nil { return err } if userConfig.Sync.DepositHistory { if err := environ.SyncService.SyncDepositHistory(ctx, session.Exchange, since); err != nil { return err } } if userConfig.Sync.WithdrawHistory { if err := environ.SyncService.SyncWithdrawHistory(ctx, session.Exchange, since); err != nil { return err } } if userConfig.Sync.RewardHistory { if err := environ.SyncService.SyncRewardHistory(ctx, session.Exchange, since); err != nil { return err } } if userConfig.Sync.MarginHistory { if err := environ.SyncService.SyncMarginHistory(ctx, session.Exchange, since, userConfig.Sync.MarginAssets...); err != nil { return err } } } return nil } // Sync syncs all registered exchange sessions func (environ *Environment) Sync(ctx context.Context, userConfig ...*Config) error { if environ.SyncService == nil { return nil } environ.syncMutex.Lock() defer environ.syncMutex.Unlock() environ.setSyncing(Syncing) defer environ.setSyncing(SyncDone) // sync by the defined user config if len(userConfig) > 0 && userConfig[0] != nil && userConfig[0].Sync != nil { return environ.syncWithUserConfig(ctx, userConfig[0]) } // the default sync logics since := defaultSyncSinceTime() for _, session := range environ.sessions { if err := environ.syncSession(ctx, session, since); err != nil { return err } } return nil } func (environ *Environment) RecordAsset(t time.Time, session *ExchangeSession, assets types.AssetMap) { // skip for back-test if environ.BacktestService != nil { return } if environ.DatabaseService == nil || environ.AccountService == nil { return } if err := environ.AccountService.InsertAsset( t, session.Name, session.ExchangeName, session.SubAccount, session.Margin, session.IsolatedMargin, session.IsolatedMarginSymbol, assets); err != nil { log.WithError(err).Errorf("can not insert asset record") } } func (environ *Environment) RecordPosition(position *types.Position, trade types.Trade, profit *types.Profit) { // skip for back-test if environ.BacktestService != nil { return } if environ.DatabaseService == nil || environ.ProfitService == nil || environ.PositionService == nil { return } // guard: set profit info to position if the strategy info is empty if profit != nil { if position.Strategy == "" && profit.Strategy != "" { position.Strategy = profit.Strategy } if position.StrategyInstanceID == "" && profit.StrategyInstanceID != "" { position.StrategyInstanceID = profit.StrategyInstanceID } } log.Infof("recordPosition: position = %s, trade = %+v, profit = %+v", position.Base.String(), trade, profit) if profit != nil { if err := environ.PositionService.Insert(position, trade, profit.Profit); err != nil { log.WithError(err).Errorf("can not insert position record") } if err := environ.ProfitService.Insert(*profit); err != nil { log.WithError(err).Errorf("can not insert profit record: %+v", profit) } } else { if err := environ.PositionService.Insert(position, trade, fixedpoint.Zero); err != nil { log.WithError(err).Errorf("can not insert position record") } } } func (environ *Environment) RecordProfit(profit types.Profit) { // skip for back-test if environ.BacktestService != nil { return } if environ.DatabaseService == nil { return } if environ.ProfitService == nil { return } if err := environ.ProfitService.Insert(profit); err != nil { log.WithError(err).Errorf("can not insert profit record: %+v", profit) } } func (environ *Environment) SyncSession(ctx context.Context, session *ExchangeSession, defaultSymbols ...string) error { if environ.SyncService == nil { return nil } environ.syncMutex.Lock() defer environ.syncMutex.Unlock() environ.setSyncing(Syncing) defer environ.setSyncing(SyncDone) since := defaultSyncSinceTime() return environ.syncSession(ctx, session, since, defaultSymbols...) } func (environ *Environment) syncSession( ctx context.Context, session *ExchangeSession, syncStartTime time.Time, defaultSymbols ...string, ) error { symbols, err := session.getSessionSymbols(defaultSymbols...) if err != nil { return err } log.Infof("syncing symbols %v from session %s", symbols, session.Name) syncBufferPeriod := -defaultSyncBufferPeriod if environ.environmentConfig != nil && environ.environmentConfig.SyncBufferPeriod != nil { syncBufferPeriod = -environ.environmentConfig.SyncBufferPeriod.Duration() } if syncBufferPeriod > 0 { log.Warnf("syncBufferPeriod should be a negative number, given: %d", syncBufferPeriod) } syncEndTime := time.Now().Add(syncBufferPeriod) return environ.SyncService.SyncSessionSymbols(ctx, session.Exchange, syncStartTime, syncEndTime, symbols...) } func (environ *Environment) ConfigureNotificationSystem(ctx context.Context, userConfig *Config) error { // setup default notification config if userConfig.Notifications == nil { userConfig.Notifications = &NotificationConfig{} } var isolation = GetIsolationFromContext(ctx) var persistence = isolation.persistenceServiceFacade.Get() err := environ.setupInteraction(persistence) if err != nil { return err } // setup slack slackToken := viper.GetString("slack-token") if len(slackToken) > 0 && userConfig.Notifications != nil { environ.setupSlack(userConfig, slackToken, persistence) } // check if telegram bot token is defined telegramBotToken := viper.GetString("telegram-bot-token") if len(telegramBotToken) > 0 { if err := environ.setupTelegram(userConfig, telegramBotToken, persistence); err != nil { return err } } if userConfig.Notifications != nil { if err := environ.ConfigureNotification(userConfig.Notifications); err != nil { return err } } return nil } func (environ *Environment) ConfigureNotification(config *NotificationConfig) error { if config.Switches != nil { if config.Switches.Trade { tradeHandler := func(trade types.Trade) { Notify(trade) } for _, session := range environ.sessions { session.UserDataStream.OnTradeUpdate(tradeHandler) } } if config.Switches.OrderUpdate { orderUpdateHandler := func(order types.Order) { Notify(order) } for _, session := range environ.sessions { session.UserDataStream.OnOrderUpdate(orderUpdateHandler) } } } return nil } // getAuthStoreID returns the authentication store id // if telegram bot token is defined, the bot id will be used. // if not, env var $USER will be used. // if both are not defined, a default "default" will be used. func getAuthStoreID() string { telegramBotToken := viper.GetString("telegram-bot-token") if len(telegramBotToken) > 0 { tt := strings.Split(telegramBotToken, ":") return tt[0] } userEnv := os.Getenv("USER") if userEnv != "" { return userEnv } return "default" } func (environ *Environment) setupInteraction(persistence service.PersistenceService) error { var otpQRCodeImagePath = "otp.png" var key *otp.Key var keyURL string var authStore = environ.getAuthStore(persistence) if v, ok := util.GetEnvVarBool("FLUSH_OTP_KEY"); v && ok { log.Warnf("flushing otp key...") if err := authStore.Reset(); err != nil { return err } } if err := authStore.Load(&keyURL); err != nil { log.Warnf("telegram session not found, generating new one-time password key for new telegram session...") newKey, err := setupNewOTPKey(otpQRCodeImagePath) if err != nil { return errors.Wrapf(err, "failed to setup totp (time-based one time password) key") } key = newKey keyURL = key.URL() if err := authStore.Save(keyURL); err != nil { return err } printOtpAuthGuide(otpQRCodeImagePath) } else if keyURL != "" { key, err = otp.NewKeyFromURL(keyURL) if err != nil { log.WithError(err).Errorf("can not load otp key from url: %s, generating new otp key", keyURL) newKey, err := setupNewOTPKey(otpQRCodeImagePath) if err != nil { return errors.Wrapf(err, "failed to setup totp (time-based one time password) key") } key = newKey keyURL = key.URL() if err := authStore.Save(keyURL); err != nil { return err } printOtpAuthGuide(otpQRCodeImagePath) } else { log.Infof("otp key loaded: %s", util.MaskKey(key.Secret())) printOtpAuthGuide(otpQRCodeImagePath) } } authStrict := false authMode := interact.AuthModeToken authToken := viper.GetString("telegram-bot-auth-token") if authToken != "" && key != nil { authStrict = true } else if authToken != "" { authMode = interact.AuthModeToken } else if key != nil { authMode = interact.AuthModeOTP } if authMode == interact.AuthModeToken { log.Debugf("found interaction auth token, using token mode for authorization...") printAuthTokenGuide(authToken) } interact.AddCustomInteraction(&interact.AuthInteract{ Strict: authStrict, Mode: authMode, Token: authToken, // can be empty string here // pragma: allowlist nextline secret OneTimePasswordKey: key, // can be nil here }) return nil } func (environ *Environment) getAuthStore(persistence service.PersistenceService) service.Store { id := getAuthStoreID() return persistence.NewStore("bbgo", "auth", id) } func (environ *Environment) setupSlack(userConfig *Config, slackToken string, persistence service.PersistenceService) { conf := userConfig.Notifications.Slack if conf == nil { return } if !strings.HasPrefix(slackToken, "xoxb-") { log.Error("SLACK_BOT_TOKEN must have the prefix \"xoxb-\".") return } // app-level token (for specific api) slackAppToken := viper.GetString("slack-app-token") if len(slackAppToken) > 0 && !strings.HasPrefix(slackAppToken, "xapp-") { log.Errorf("SLACK_APP_TOKEN must have the prefix \"xapp-\".") return } if conf.ErrorChannel != "" { log.Debugf("found slack configured, setting up log hook...") log.AddHook(slacklog.NewLogHook(slackToken, conf.ErrorChannel)) } log.Debugf("adding slack notifier with default channel: %s", conf.DefaultChannel) var slackOpts = []slack.Option{ slack.OptionLog(stdlog.New(os.Stdout, "api: ", stdlog.Lshortfile|stdlog.LstdFlags)), } if len(slackAppToken) > 0 { slackOpts = append(slackOpts, slack.OptionAppLevelToken(slackAppToken)) } if b, ok := util.GetEnvVarBool("DEBUG_SLACK"); ok { slackOpts = append(slackOpts, slack.OptionDebug(b)) } var client = slack.New(slackToken, slackOpts...) var notifier = slacknotifier.New(client, conf.DefaultChannel) Notification.AddNotifier(notifier) // allocate a store, so that we can save the chatID for the owner var messenger = interact.NewSlack(client) var sessions = interact.SlackSessionMap{} var sessionStore = persistence.NewStore("bbgo", "slack") if err := sessionStore.Load(&sessions); err != nil { } else { // TODO: this is not necessary for slack, but we should find a way to restore the sessions /* for _, session := range sessions { if session.IsAuthorized() { // notifier.AddChat(session.Chat) } } messenger.RestoreSessions(sessions) messenger.OnAuthorized(func(userSession *interact.SlackSession) { if userSession.IsAuthorized() { // notifier.AddChat(userSession.Chat) } }) */ } interact.AddMessenger(messenger) } func (environ *Environment) setupTelegram( userConfig *Config, telegramBotToken string, persistence service.PersistenceService, ) error { tt := strings.Split(telegramBotToken, ":") telegramID := tt[0] bot, err := telebot.NewBot(telebot.Settings{ // You can also set custom API URL. // If field is empty it equals to "https://api.telegram.org". // URL: "http://195.129.111.17:8012", Token: telegramBotToken, Poller: &telebot.LongPoller{Timeout: 10 * time.Second}, }) if err != nil { return err } var opts []telegramnotifier.Option if userConfig.Notifications != nil && userConfig.Notifications.Telegram != nil { log.Infof("telegram broadcast is enabled") opts = append(opts, telegramnotifier.UseBroadcast()) } var notifier = telegramnotifier.New(bot, opts...) Notification.AddNotifier(notifier) log.AddHook(telegramnotifier.NewLogHook(notifier)) // allocate a store, so that we can save the chatID for the owner var messenger = interact.NewTelegram(bot) var sessions = interact.TelegramSessionMap{} var sessionStore = persistence.NewStore("bbgo", "telegram", telegramID) if err := sessionStore.Load(&sessions); err != nil { if err != service.ErrPersistenceNotExists { log.WithError(err).Errorf("unexpected persistence error") } } else { for _, session := range sessions { if session.IsAuthorized() { notifier.AddChat(session.Chat) } } // you must restore the session after the notifier updates messenger.RestoreSessions(sessions) } messenger.OnAuthorized(func(userSession *interact.TelegramSession) { if userSession.IsAuthorized() { notifier.AddChat(userSession.Chat) } log.Infof("user session %d got authorized, saving telegram sessions...", userSession.User.ID) if err := sessionStore.Save(messenger.Sessions()); err != nil { log.WithError(err).Errorf("telegram session save error") } }) interact.AddMessenger(messenger) return nil } func writeOTPKeyAsQRCodePNG(key *otp.Key, imagePath string) error { // Convert TOTP key into a PNG var buf bytes.Buffer img, err := key.Image(512, 512) if err != nil { return err } if err := png.Encode(&buf, img); err != nil { return err } if err := ioutil.WriteFile(imagePath, buf.Bytes(), 0644); err != nil { return err } return nil } // setupNewOTPKey generates a new otp key and save the secret as a qrcode image func setupNewOTPKey(qrcodeImagePath string) (*otp.Key, error) { key, err := service.NewDefaultTotpKey() if err != nil { return nil, errors.Wrapf(err, "failed to setup totp (time-based one time password) key") } printOtpKey(key) if err := writeOTPKeyAsQRCodePNG(key, qrcodeImagePath); err != nil { return nil, err } return key, nil } func printOtpKey(key *otp.Key) { fmt.Println("") fmt.Println("====================================================================") fmt.Println(" PLEASE STORE YOUR OTP KEY SAFELY ") fmt.Println("====================================================================") fmt.Printf(" Issuer: %s\n", key.Issuer()) fmt.Printf(" AccountName: %s\n", key.AccountName()) fmt.Printf(" Secret: %s\n", key.Secret()) fmt.Printf(" Key URL: %s\n", key.URL()) fmt.Println("====================================================================") fmt.Println("") } func printOtpAuthGuide(qrcodeImagePath string) { fmt.Printf(` To scan your OTP QR code, please run the following command: open %s For telegram, send the auth command with the generated one-time password to the bbgo bot you created to enable the notification: /auth `, qrcodeImagePath) } func printAuthTokenGuide(token string) { fmt.Printf(` For telegram, send the following command to the bbgo bot you created to enable the notification: /auth And then enter your token %s `, token) } func (session *ExchangeSession) getSessionSymbols(defaultSymbols ...string) ([]string, error) { if session.IsolatedMargin { return []string{session.IsolatedMarginSymbol}, nil } if len(defaultSymbols) > 0 { return defaultSymbols, nil } return session.FindPossibleAssetSymbols() } func defaultSyncSinceTime() time.Time { return time.Now().AddDate(0, -6, 0) }