Golang ClientStore.ControllerByName方法代碼示例

func (c *registerCommand) promptControllerName(store jujuclient.ClientStore, suggestedName string, stderr io.Writer, stdin io.Reader) (string, error) {
	if suggestedName != "" {
		if _, err := store.ControllerByName(suggestedName); err == nil {
			suggestedName = ""
		}
	}
	for {
		var setMsg string
		setMsg = "Enter a name for this controller: "
		if suggestedName != "" {
			setMsg = fmt.Sprintf("Enter a name for this controller [%s]: ", suggestedName)
		}
		fmt.Fprintf(stderr, setMsg)
		name, err := c.readLine(stdin)
		if err != nil {
			return "", errors.Trace(err)
		}
		name = strings.TrimSpace(name)
		if name == "" {
			if suggestedName == "" {
				fmt.Fprintln(stderr, "You must specify a non-empty controller name.")
				continue
			}
			name = suggestedName
		}
		_, err = store.ControllerByName(name)
		if err == nil {
			fmt.Fprintf(stderr, "Controller %q already exists.\n", name)
			continue
		}
		return name, nil
	}
}

func (c *registerCommand) promptControllerName(store jujuclient.ClientStore, suggestedName string, stderr io.Writer, stdin io.Reader) (string, error) {
	_, err := store.ControllerByName(suggestedName)
	if err == nil {
		fmt.Fprintf(stderr, errControllerConflicts, suggestedName)
		suggestedName = ""
	}
	var setMsg string
	setMsg = "Enter a name for this controller: "
	if suggestedName != "" {
		setMsg = fmt.Sprintf("Enter a name for this controller [%s]: ",
			suggestedName)
	}
	fmt.Fprintf(stderr, setMsg)
	defer stderr.Write([]byte{'\n'})
	name, err := c.readLine(stdin)
	if err != nil {
		return "", errors.Trace(err)
	}
	name = strings.TrimSpace(name)
	if name == "" && suggestedName == "" {
		return "", errors.NewNotValid(nil, "you must specify a non-empty controller name")
	}
	if name == "" && suggestedName != "" {
		return suggestedName, nil
	}
	return name, nil
}

func (c *logoutCommand) logout(store jujuclient.ClientStore, controllerName string) error {
	accountDetails, err := store.AccountDetails(controllerName)
	if errors.IsNotFound(err) {
		// Not logged in; nothing else to do.
		return nil
	} else if err != nil {
		return errors.Trace(err)
	}

	// We first ensure that the user has a macaroon, which implies
	// they know their password. If they have just bootstrapped,
	// they will have a randomly generated password which they will
	// be unaware of.
	if accountDetails.Password != "" && !c.Force {
		return errors.New(`preventing account loss

It appears that you have not changed the password for
your account. If this is the case, change the password
first before logging out, so that you can log in again
afterwards. To change your password, run the command
"juju change-user-password".

If you are sure you want to log out, and it is safe to
clear the credentials from the client, then you can run
this command again with the "--force" flag.
`)
	}

	details, err := store.ControllerByName(controllerName)
	if err != nil {
		return errors.Trace(err)
	}
	if err := c.ClearControllerMacaroons(details.APIEndpoints); err != nil {
		return errors.Trace(err)
	}

	// Remove the account credentials.
	if err := store.RemoveAccount(controllerName); err != nil {
		return errors.Annotate(err, "failed to clear credentials")
	}
	return nil
}

// Prepare prepares a new controller based on the provided configuration.
// It is an error to prepare a controller if there already exists an
// entry in the client store with the same name.
//
// Upon success, Prepare will update the ClientStore with the details of
// the controller, admin account, and admin model.
func Prepare(
	ctx environs.BootstrapContext,
	store jujuclient.ClientStore,
	args PrepareParams,
) (environs.Environ, error) {

	if err := args.Validate(); err != nil {
		return nil, errors.Trace(err)
	}

	_, err := store.ControllerByName(args.ControllerName)
	if err == nil {
		return nil, errors.AlreadyExistsf("controller %q", args.ControllerName)
	} else if !errors.IsNotFound(err) {
		return nil, errors.Annotatef(err, "error reading controller %q info", args.ControllerName)
	}

	cloudType, ok := args.ModelConfig["type"].(string)
	if !ok {
		return nil, errors.NotFoundf("cloud type in base configuration")
	}

	p, err := environs.Provider(cloudType)
	if err != nil {
		return nil, errors.Trace(err)
	}

	env, details, err := prepare(ctx, p, args)
	if err != nil {
		return nil, errors.Trace(err)
	}

	if err := decorateAndWriteInfo(
		store, details, args.ControllerName, env.Config().Name(),
	); err != nil {
		return nil, errors.Annotatef(err, "cannot create controller %q info", args.ControllerName)
	}
	return env, nil
}