Golang Info.Tag方法代码示例

func (s *baseLoginSuite) openAPIWithoutLogin(c *gc.C, info *api.Info) api.Connection {
	info.Tag = nil
	info.Password = ""
	st, err := api.Open(info, fastDialOpts)
	c.Assert(err, jc.ErrorIsNil)
	return st
}

func commonConnect(
	apiOpen api.OpenFunc,
	apiInfo *api.Info,
	accountDetails *jujuclient.AccountDetails,
	modelUUID string,
	dialOpts api.DialOpts,
) (api.Connection, error) {
	if accountDetails != nil {
		// We only set the tag if either a password or
		// macaroon is found in the accounts.yaml file.
		// If neither is found, we'll use external
		// macaroon authentication which requires that
		// no tag be specified.
		userTag := names.NewUserTag(accountDetails.User)
		if accountDetails.Password != "" {
			// If a password is available, we always use
			// that.
			//
			// TODO(axw) make it invalid to store both
			// password and macaroon in accounts.yaml?
			apiInfo.Tag = userTag
			apiInfo.Password = accountDetails.Password
		} else if accountDetails.Macaroon != "" {
			var m macaroon.Macaroon
			if err := json.Unmarshal([]byte(accountDetails.Macaroon), &m); err != nil {
				return nil, errors.Trace(err)
			}
			apiInfo.Tag = userTag
			apiInfo.Macaroons = []macaroon.Slice{{&m}}
		}
	}
	if modelUUID != "" {
		apiInfo.ModelTag = names.NewModelTag(modelUUID)
	}
	st, err := apiOpen(apiInfo, dialOpts)
	return st, errors.Trace(err)
}

// Run implements Command.Run
func (c *loginCommand) Run(ctx *cmd.Context) error {
	if c.loginAPIOpen == nil {
		c.loginAPIOpen = c.JujuCommandBase.APIOpen
	}

	// TODO(thumper): as we support the user and address
	// change this check here.
	if c.Server.Path == "" {
		return errors.New("no server file specified")
	}

	serverYAML, err := c.Server.Read(ctx)
	if err != nil {
		return errors.Trace(err)
	}

	var serverDetails envcmd.ServerFile
	if err := goyaml.Unmarshal(serverYAML, &serverDetails); err != nil {
		return errors.Trace(err)
	}

	info := api.Info{
		Addrs:  serverDetails.Addresses,
		CACert: serverDetails.CACert,
	}
	var userTag names.UserTag
	if serverDetails.Username != "" {
		// Construct the api.Info struct from the provided values
		// and attempt to connect to the remote server before we do anything else.
		if !names.IsValidUser(serverDetails.Username) {
			return errors.Errorf("%q is not a valid username", serverDetails.Username)
		}

		userTag = names.NewUserTag(serverDetails.Username)
		if !userTag.IsLocal() {
			// Remote users do not have their passwords stored in Juju
			// so we never attempt to change them.
			c.KeepPassword = true
		}
		info.Tag = userTag
	}

	if serverDetails.Password != "" {
		info.Password = serverDetails.Password
	}

	if serverDetails.Password == "" || serverDetails.Username == "" {
		info.UseMacaroons = true
	}
	if c == nil {
		panic("nil c")
	}
	if c.loginAPIOpen == nil {
		panic("no loginAPIOpen")
	}
	apiState, err := c.loginAPIOpen(&info, api.DefaultDialOpts())
	if err != nil {
		return errors.Trace(err)
	}
	defer apiState.Close()

	// If we get to here, the credentials supplied were sufficient to connect
	// to the Juju Controller and login. Now we cache the details.
	controllerInfo, err := c.cacheConnectionInfo(serverDetails, apiState)
	if err != nil {
		return errors.Trace(err)
	}
	ctx.Infof("cached connection details as controller %q", c.Name)

	// If we get to here, we have been able to connect to the API server, and
	// also have been able to write the cached information. Now we can change
	// the user's password to a new randomly generated strong password, and
	// update the cached information knowing that the likelihood of failure is
	// minimal.
	if !c.KeepPassword {
		if err := c.updatePassword(ctx, apiState, userTag, controllerInfo); err != nil {
			return errors.Trace(err)
		}
	}

	return errors.Trace(envcmd.SetCurrentController(ctx, c.Name))
}