Example #1
0
// Run executes the CLI
func (c *CommandLine) Run() error {
	// register OS signals for graceful termination
	if !c.IgnoreSignals {
		signal.Notify(c.osSignals, os.Kill, os.Interrupt, syscall.SIGTERM, syscall.SIGQUIT, syscall.SIGHUP)
	}

	var promptForPassword bool
	// determine if they set the password flag but provided no value
	for _, v := range os.Args {
		v = strings.ToLower(v)
		if (strings.HasPrefix(v, "-password") || strings.HasPrefix(v, "--password")) && c.Password == "" {
			promptForPassword = true
			break
		}
	}

	c.Line = liner.NewLiner()
	defer c.Line.Close()

	c.Line.SetMultiLineMode(true)

	if promptForPassword {
		p, e := c.Line.PasswordPrompt("password: ")
		if e != nil {
			fmt.Println("Unable to parse password.")
		} else {
			c.Password = p
		}
	}

	if err := c.Connect(""); err != nil {
		return fmt.Errorf(
			"Failed to connect to %s\nPlease check your connection settings and ensure 'influxd' is running.",
			c.Client.Addr())
	}

	// Modify precision.
	c.SetPrecision(c.Precision)

	if c.Execute == "" && !c.Import {
		token, err := c.DatabaseToken()
		if err != nil {
			return fmt.Errorf("Failed to check token: %s", err.Error())
		}
		if token == "" {
			fmt.Printf(noTokenMsg)
		}
		fmt.Printf("Connected to %s version %s\n", c.Client.Addr(), c.ServerVersion)
	}

	if c.Execute != "" {
		// Make the non-interactive mode send everything through the CLI's parser
		// the same way the interactive mode works
		lines := strings.Split(c.Execute, "\n")
		for _, line := range lines {
			if err := c.ParseCommand(line); err != nil {
				return err
			}
		}

		c.Line.Close()
		return nil
	}

	if c.Import {
		path := net.JoinHostPort(c.Host, strconv.Itoa(c.Port))
		u, e := client.ParseConnectionString(path, c.Ssl)
		if e != nil {
			return e
		}

		config := v8.NewConfig()
		config.Username = c.Username
		config.Password = c.Password
		config.Precision = "ns"
		config.WriteConsistency = "any"
		config.Path = c.Path
		config.Version = c.ClientVersion
		config.URL = u
		config.Compressed = c.Compressed
		config.PPS = c.PPS
		config.Precision = c.Precision

		i := v8.NewImporter(config)
		if err := i.Import(); err != nil {
			err = fmt.Errorf("ERROR: %s\n", err)
			c.Line.Close()
			return err
		}
		c.Line.Close()
		return nil
	}

	c.Version()

	usr, err := user.Current()
	// Only load/write history if we can get the user
	if err == nil {
		c.historyFilePath = filepath.Join(usr.HomeDir, ".influx_history")
		if historyFile, err := os.Open(c.historyFilePath); err == nil {
			c.Line.ReadHistory(historyFile)
			historyFile.Close()
		}
	}

	// read from prompt until exit is run
	for {
		select {
		case <-c.osSignals:
			close(c.Quit)
		case <-c.Quit:
			c.exit()
			return nil
		default:
			l, e := c.Line.Prompt("> ")
			if e == io.EOF {
				// Instead of die, register that someone exited the program gracefully
				l = "exit"
			} else if e != nil {
				break
			}
			if err := c.ParseCommand(l); err != ErrBlankCommand {
				c.Line.AppendHistory(l)
				c.saveHistory()
			}
		}
	}
}
Example #2
0
// Run executes the CLI
func (c *CommandLine) Run() error {
	if !c.IgnoreSignals {
		// register OS signals for graceful termination
		signal.Notify(c.osSignals, syscall.SIGINT, syscall.SIGTERM)
	}

	var promptForPassword bool
	// determine if they set the password flag but provided no value
	for _, v := range os.Args {
		v = strings.ToLower(v)
		if (strings.HasPrefix(v, "-password") || strings.HasPrefix(v, "--password")) && c.Password == "" {
			promptForPassword = true
			break
		}
	}

	c.Line = liner.NewLiner()
	defer c.Line.Close()

	c.Line.SetMultiLineMode(true)

	if promptForPassword {
		p, e := c.Line.PasswordPrompt("password: ")
		if e != nil {
			fmt.Println("Unable to parse password.")
		} else {
			c.Password = p
		}
	}

	if err := c.Connect(""); err != nil {
		return fmt.Errorf(
			"Failed to connect to %s\nPlease check your connection settings and ensure 'influxd' is running.",
			c.Client.Addr())
	}

	// Modify precision.
	c.SetPrecision(c.Precision)

	if c.Execute == "" && !c.Import {
		token, err := c.DatabaseToken()
		if err != nil {
			return fmt.Errorf("Failed to check token: %s", err.Error())
		}
		if token == "" {
			fmt.Printf(noTokenMsg)
		}
		fmt.Printf("Connected to %s version %s\n", c.Client.Addr(), c.ServerVersion)
	}

	if c.Execute != "" {
		// Make the non-interactive mode send everything through the CLI's parser
		// the same way the interactive mode works
		lines := strings.Split(c.Execute, "\n")
		for _, line := range lines {
			if err := c.ParseCommand(line); err != nil {
				return err
			}
		}

		c.Line.Close()
		return nil
	}

	if c.Import {
		path := net.JoinHostPort(c.Host, strconv.Itoa(c.Port))
		u, e := client.ParseConnectionString(path, c.Ssl)
		if e != nil {
			return e
		}

		config := v8.NewConfig()
		config.Username = c.Username
		config.Password = c.Password
		config.Precision = "ns"
		config.WriteConsistency = "any"
		config.Path = c.Path
		config.Version = c.ClientVersion
		config.URL = u
		config.Compressed = c.Compressed
		config.PPS = c.PPS
		config.Precision = c.Precision

		i := v8.NewImporter(config)
		if err := i.Import(); err != nil {
			err = fmt.Errorf("ERROR: %s\n", err)
			c.Line.Close()
			return err
		}
		c.Line.Close()
		return nil
	}

	c.Version()

	// Only load/write history if HOME environment variable is set.
	if homeDir := os.Getenv("HOME"); homeDir != "" {
		// Attempt to load the history file.
		c.historyFilePath = filepath.Join(homeDir, ".influx_history")
		if historyFile, err := os.Open(c.historyFilePath); err == nil {
			c.Line.ReadHistory(historyFile)
			historyFile.Close()
		}
	}

	// read from prompt until exit is run
	return c.mainLoop()
}
Example #3
0
// Run executes the CLI
func (c *CommandLine) Run() error {
	hasTTY := c.ForceTTY || terminal.IsTerminal(int(os.Stdin.Fd()))

	var promptForPassword bool
	// determine if they set the password flag but provided no value
	for _, v := range os.Args {
		v = strings.ToLower(v)
		if (strings.HasPrefix(v, "-password") || strings.HasPrefix(v, "--password")) && c.Password == "" {
			promptForPassword = true
			break
		}
	}

	// Check if we will be able to prompt for the password later.
	if promptForPassword && !hasTTY {
		return errors.New("Unable to prompt for a password with no TTY.")
	}

	// Read environment variables for username/password.
	if c.Username == "" {
		c.Username = os.Getenv("INFLUX_USERNAME")
	}
	// If we are going to be prompted for a password, always use the entered password.
	if promptForPassword {
		// Open the liner (temporarily) and prompt for the password.
		p, e := func() (string, error) {
			l := liner.NewLiner()
			defer l.Close()
			return l.PasswordPrompt("password: ")
		}()
		if e != nil {
			return errors.New("Unable to parse password")
		}
		c.Password = p
	} else if c.Password == "" {
		c.Password = os.Getenv("INFLUX_PASSWORD")
	}

	if err := c.Connect(""); err != nil {
		return fmt.Errorf(
			"Failed to connect to %s: %s\nPlease check your connection settings and ensure 'influxd' is running.",
			c.Client.Addr(), err.Error())
	}

	// Modify precision.
	c.SetPrecision(c.Precision)

	if c.Execute != "" {
		// Make the non-interactive mode send everything through the CLI's parser
		// the same way the interactive mode works
		lines := strings.Split(c.Execute, "\n")
		for _, line := range lines {
			if err := c.ParseCommand(line); err != nil {
				return err
			}
		}
		return nil
	}

	if c.Import {
		path := net.JoinHostPort(c.Host, strconv.Itoa(c.Port))
		u, e := client.ParseConnectionString(path, c.Ssl)
		if e != nil {
			return e
		}

		config := v8.NewConfig()
		config.Username = c.Username
		config.Password = c.Password
		config.Precision = "ns"
		config.WriteConsistency = "any"
		config.Path = c.Path
		config.Version = c.ClientVersion
		config.URL = u
		config.Compressed = c.Compressed
		config.PPS = c.PPS
		config.Precision = c.Precision

		i := v8.NewImporter(config)
		if err := i.Import(); err != nil {
			err = fmt.Errorf("ERROR: %s\n", err)
			return err
		}
		return nil
	}

	if !hasTTY {
		cmd, err := ioutil.ReadAll(os.Stdin)
		if err != nil {
			return err
		}
		return c.ExecuteQuery(string(cmd))
	}

	if !c.IgnoreSignals {
		// register OS signals for graceful termination
		signal.Notify(c.osSignals, syscall.SIGINT, syscall.SIGTERM)
	}

	c.Line = liner.NewLiner()
	defer c.Line.Close()

	c.Line.SetMultiLineMode(true)

	token, err := c.DatabaseToken()
	if err != nil {
		return fmt.Errorf("Failed to check token: %s", err.Error())
	}
	if token == "" {
		fmt.Printf(noTokenMsg)
	}
	fmt.Printf("Connected to %s version %s\n", c.Client.Addr(), c.ServerVersion)

	c.Version()

	// Only load/write history if HOME environment variable is set.
	if homeDir := os.Getenv("HOME"); homeDir != "" {
		// Attempt to load the history file.
		c.historyFilePath = filepath.Join(homeDir, ".influx_history")
		if historyFile, err := os.Open(c.historyFilePath); err == nil {
			c.Line.ReadHistory(historyFile)
			historyFile.Close()
		}
	}

	// read from prompt until exit is run
	return c.mainLoop()
}