// ChangeUser changes the user used by the current CLI session.
func (c *CLI) ChangeUser(name string) *CLI {
	adminClientConfig, err := testutil.GetClusterAdminClientConfig(c.adminConfigPath)
	if err != nil {
		FatalErr(err)
	}
	_, _, clientConfig, err := testutil.GetClientForUser(*adminClientConfig, name)
	if err != nil {
		FatalErr(err)
	}

	kubeConfig, err := config.CreateConfig(c.Namespace(), clientConfig)
	if err != nil {
		FatalErr(err)
	}

	c.configPath = filepath.Join(c.outputDir, name+".kubeconfig")
	err = clientcmd.WriteToFile(*kubeConfig, c.configPath)
	if err != nil {
		FatalErr(err)
	}

	c.username = name
	e2e.Logf("configPath is now %q", c.configPath)
	return c
}

// Save all the information present in this helper to a config file. An explicit config
// file path can be provided, if not use the established conventions about config
// loading rules. Will create a new config file if one can't be found at all. Will only
// succeed if all required info is present.
func (o *LoginOptions) SaveConfig() (bool, error) {
	if len(o.Username) == 0 {
		return false, fmt.Errorf("Insufficient data to merge configuration.")
	}

	globalExistedBefore := true
	if _, err := os.Stat(o.PathOptions.GlobalFile); os.IsNotExist(err) {
		globalExistedBefore = false
	}

	newConfig, err := config.CreateConfig(o.Project, o.Config)
	if err != nil {
		return false, err
	}

	cwd, err := os.Getwd()
	if err != nil {
		return false, err
	}
	baseDir, err := cmdutil.MakeAbs(filepath.Dir(o.PathOptions.GetDefaultFilename()), cwd)
	if err != nil {
		return false, err
	}
	if err := config.RelativizeClientConfigPaths(newConfig, baseDir); err != nil {
		return false, err
	}

	configToWrite, err := config.MergeConfig(*o.StartingKubeConfig, *newConfig)
	if err != nil {
		return false, err
	}

	if err := kclientcmd.ModifyConfig(o.PathOptions, *configToWrite, true); err != nil {
		if !os.IsPermission(err) {
			return false, err
		}

		out := &bytes.Buffer{}
		cmderr.PrintError(errors.ErrKubeConfigNotWriteable(o.PathOptions.GetDefaultFilename(), o.PathOptions.IsExplicitFile(), err), out)
		return false, fmt.Errorf("%v", out)
	}

	created := false
	if _, err := os.Stat(o.PathOptions.GlobalFile); err == nil {
		created = created || !globalExistedBefore
	}

	return created, nil
}

// Save all the information present in this helper to a config file. An explicit config
// file path can be provided, if not use the established conventions about config
// loading rules. Will create a new config file if one can't be found at all. Will only
// succeed if all required info is present.
func (o *LoginOptions) SaveConfig() (bool, error) {
	if len(o.Username) == 0 {
		return false, fmt.Errorf("Insufficient data to merge configuration.")
	}

	globalExistedBefore := true
	if _, err := os.Stat(o.PathOptions.GlobalFile); os.IsNotExist(err) {
		globalExistedBefore = false
	}

	newConfig, err := config.CreateConfig(o.Project, o.Config)
	if err != nil {
		return false, err
	}

	cwd, err := os.Getwd()
	if err != nil {
		return false, err
	}
	baseDir, err := cmdutil.MakeAbs(filepath.Dir(o.PathOptions.GetDefaultFilename()), cwd)
	if err != nil {
		return false, err
	}
	if err := config.RelativizeClientConfigPaths(newConfig, baseDir); err != nil {
		return false, err
	}

	configToWrite, err := config.MergeConfig(*o.StartingKubeConfig, *newConfig)
	if err != nil {
		return false, err
	}

	if err := kubecmdconfig.ModifyConfig(o.PathOptions, *configToWrite); err != nil {
		return false, err
	}

	created := false
	if _, err := os.Stat(o.PathOptions.GlobalFile); err == nil {
		created = created || !globalExistedBefore
	}

	return created, nil
}

// RunProject contains all the necessary functionality for the OpenShift cli project command
func (o ProjectOptions) RunProject() error {
	config := o.Config
	clientCfg := o.ClientConfig
	out := o.Out

	// No argument provided, we will just print info
	if len(o.ProjectName) == 0 {
		currentContext := config.Contexts[config.CurrentContext]
		currentProject := currentContext.Namespace

		if len(currentProject) > 0 {
			if o.DisplayShort {
				fmt.Fprintln(out, currentProject)
				return nil
			}

			_, err := o.Client.Projects().Get(currentProject)
			if err != nil {
				if kapierrors.IsNotFound(err) {
					return fmt.Errorf("the project %q specified in your config does not exist.", currentProject)
				}
				if clientcmd.IsForbidden(err) {
					return fmt.Errorf("you do not have rights to view project %q.", currentProject)
				}
				return err
			}

			if config.CurrentContext != currentProject {
				if len(currentProject) > 0 {
					fmt.Fprintf(out, "Using project %q from context named %q on server %q.\n", currentProject, config.CurrentContext, clientCfg.Host)
				} else {
					fmt.Fprintf(out, "Using context named %q on server %q.\n", config.CurrentContext, clientCfg.Host)
				}
			} else {
				fmt.Fprintf(out, "Using project %q on server %q.\n", currentProject, clientCfg.Host)
			}

		} else {
			if o.DisplayShort {
				return fmt.Errorf("no project has been set")
			}
			fmt.Fprintf(out, "No project has been set. Pass a project name to make that the default.\n")
		}
		return nil
	}

	// We have an argument that can be either a context or project
	argument := o.ProjectName

	contextInUse := ""
	namespaceInUse := ""
	contextNameIsGenerated := false

	// Check if argument is an existing context, if so just set it as the context in use.
	// If not a context then we will try to handle it as a project.
	if context, contextExists := config.Contexts[argument]; !o.ProjectOnly && contextExists {
		contextInUse = argument
		namespaceInUse = context.Namespace

		config.CurrentContext = argument

	} else {
		if !o.SkipAccessValidation {
			_, err := o.Client.Projects().Get(argument)
			if err != nil {
				if isNotFound, isForbidden := kapierrors.IsNotFound(err), clientcmd.IsForbidden(err); isNotFound || isForbidden {
					var msg string
					if isForbidden {
						msg = fmt.Sprintf("You are not a member of project %q.", argument)
					} else {
						msg = fmt.Sprintf("A project named %q does not exist on %q.", argument, clientCfg.Host)
					}

					projects, err := getProjects(o.Client)
					if err == nil {
						switch len(projects) {
						case 0:
							msg += "\nYou are not a member of any projects. You can request a project to be created with the 'new-project' command."
						case 1:
							msg += fmt.Sprintf("\nYou have one project on this server: %s", api.DisplayNameAndNameForProject(&projects[0]))
						default:
							msg += "\nYour projects are:"
							for _, project := range projects {
								msg += fmt.Sprintf("\n* %s", api.DisplayNameAndNameForProject(&project))
							}
						}
					}

					if hasMultipleServers(config) {
						msg += "\nTo see projects on another server, pass '--server=<server>'."
					}
					return errors.New(msg)
				}
				return err
			}
		}
		projectName := argument

		kubeconfig, err := cliconfig.CreateConfig(projectName, o.ClientConfig)
//.........这里部分代码省略.........

// RunProject contains all the necessary functionality for the OpenShift cli project command
func (o ProjectOptions) RunProject() error {
	config := o.Config
	clientCfg := o.ClientConfig
	out := o.Out

	// No argument provided, we will just print info
	if len(o.ProjectName) == 0 {
		currentContext := config.Contexts[config.CurrentContext]
		currentProject := currentContext.Namespace

		if len(currentProject) > 0 {
			if o.DisplayShort {
				fmt.Fprintln(out, currentProject)
				return nil
			}

			_, err := o.Client.Projects().Get(currentProject)
			if err != nil {
				if kapierrors.IsNotFound(err) {
					return fmt.Errorf("the project %q specified in your config does not exist.", currentProject)
				}
				if clientcmd.IsForbidden(err) {
					return fmt.Errorf("you do not have rights to view project %q.", currentProject)
				}
				return err
			}

			defaultContextName := cliconfig.GetContextNickname(currentContext.Namespace, currentContext.Cluster, currentContext.AuthInfo)

			// if they specified a project name and got a generated context, then only show the information they care about.  They won't recognize
			// a context name they didn't choose
			if config.CurrentContext == defaultContextName {
				fmt.Fprintf(out, "Using project %q on server %q.\n", currentProject, clientCfg.Host)

			} else {
				fmt.Fprintf(out, "Using project %q from context named %q on server %q.\n", currentProject, config.CurrentContext, clientCfg.Host)
			}

		} else {
			if o.DisplayShort {
				return fmt.Errorf("no project has been set")
			}
			fmt.Fprintf(out, "No project has been set. Pass a project name to make that the default.\n")
		}
		return nil
	}

	// We have an argument that can be either a context or project
	argument := o.ProjectName

	contextInUse := ""
	namespaceInUse := ""

	// Check if argument is an existing context, if so just set it as the context in use.
	// If not a context then we will try to handle it as a project.
	if context, contextExists := config.Contexts[argument]; !o.ProjectOnly && contextExists {
		contextInUse = argument
		namespaceInUse = context.Namespace

		config.CurrentContext = argument

	} else {
		if !o.SkipAccessValidation {
			_, err := o.Client.Projects().Get(argument)
			if err != nil {
				if isNotFound, isForbidden := kapierrors.IsNotFound(err), clientcmd.IsForbidden(err); isNotFound || isForbidden {
					var msg string
					if isForbidden {
						msg = fmt.Sprintf("You are not a member of project %q.", argument)
					} else {
						msg = fmt.Sprintf("A project named %q does not exist on %q.", argument, clientCfg.Host)
					}

					projects, err := getProjects(o.Client)
					if err == nil {
						switch len(projects) {
						case 0:
							msg += "\nYou are not a member of any projects. You can request a project to be created with the 'new-project' command."
						case 1:
							msg += fmt.Sprintf("\nYou have one project on this server: %s", api.DisplayNameAndNameForProject(&projects[0]))
						default:
							msg += "\nYour projects are:"
							for _, project := range projects {
								msg += fmt.Sprintf("\n* %s", api.DisplayNameAndNameForProject(&project))
							}
						}
					}

					if hasMultipleServers(config) {
						msg += "\nTo see projects on another server, pass '--server=<server>'."
					}
					return errors.New(msg)
				}
				return err
			}
		}
		projectName := argument

		kubeconfig, err := cliconfig.CreateConfig(projectName, o.ClientConfig)
//.........这里部分代码省略.........