Golang console.Println函數代碼示例

func mainConfigVersion(ctx *cli.Context) {
	if ctx.Args().First() == "help" {
		cli.ShowCommandHelpAndExit(ctx, "version", 1) // last argument is exit code
	}

	config, err := newConfig()
	fatalIf(err.Trace(), "Failed to initialize ‘quick’ configuration data structure.")

	configPath := mustGetMcConfigPath()
	err = config.Load(configPath)
	fatalIf(err.Trace(configPath), "Unable to load config path")

	// convert interface{} back to its original struct
	newConf := config.Data().(*configV5)
	type Version struct {
		Value string `json:"value"`
	}
	if globalJSONFlag {
		tB, e := json.Marshal(
			struct {
				Version Version `json:"version"`
			}{Version: Version{newConf.Version}},
		)
		fatalIf(probe.NewError(e), "Unable to construct version string.")
		console.Println(string(tB))
		return
	}
	console.Println(newConf.Version)
}

func mainVersion(ctx *cli.Context) {
	if ctx.Args().First() == "help" {
		cli.ShowCommandHelpAndExit(ctx, "version", 1) // last argument is exit code
	}

	setVersionPalette(ctx.GlobalString("colors"))

	if globalJSONFlag {
		tB, e := json.Marshal(
			struct {
				Version struct {
					Value  string `json:"value"`
					Format string `json:"format"`
				} `json:"version"`
			}{
				Version: struct {
					Value  string `json:"value"`
					Format string `json:"format"`
				}{
					Value:  mcVersion,
					Format: "RFC2616",
				},
			},
		)
		fatalIf(probe.NewError(e), "Unable to construct version string.")
		console.Println(string(tB))
		return
	}
	msg := console.Colorize("Version", fmt.Sprintf("Version: %s\n", mcVersion))
	msg += console.Colorize("Version", fmt.Sprintf("Release-Tag: %s", mcReleaseTag))
	console.Println(msg)
}

// printMsg prints message string or JSON structure depending on the type of output console.
func printMsg(msg message) {
	if !globalJSONFlag {
		console.Println(msg.String())
	} else {
		console.Println(msg.JSON())
	}
}

// PrintMsg prints message
func (qs *QuietStatus) PrintMsg(msg message) {
	if !globalJSON {
		console.Println(msg.String())
	} else {
		console.Println(msg.JSON())
	}
}

func mainVersion(ctx *cli.Context) {
	if ctx.Args().First() == "help" {
		cli.ShowCommandHelpAndExit(ctx, "version", 1) // last argument is exit code
	}
	t, _ := time.Parse(time.RFC3339Nano, Version)
	if t.IsZero() {
		console.Println("")
		return
	}
	type Version struct {
		Value  time.Time `json:"value"`
		Format string    `json:"format"`
	}
	if globalJSONFlag {
		tB, e := json.Marshal(
			struct {
				Version Version `json:"version"`
			}{Version: Version{t, "RFC3339Nano"}},
		)
		fatalIf(probe.NewError(e), "Unable to construct version string.")
		console.Println(string(tB))
		return
	}
	console.Println(t.Format(http.TimeFormat))
}

// Prints startup message for Object API acces, prints link to our SDK documentation.
func printObjectAPIMsg() {
	console.Println(colorBlue("\nObject API (Amazon S3 compatible):"))
	console.Println(colorBlue("   Go: ") + fmt.Sprintf(getFormatStr(len(goQuickStartGuide), 8), goQuickStartGuide))
	console.Println(colorBlue("   Java: ") + fmt.Sprintf(getFormatStr(len(javaQuickStartGuide), 6), javaQuickStartGuide))
	console.Println(colorBlue("   Python: ") + fmt.Sprintf(getFormatStr(len(pyQuickStartGuide), 4), pyQuickStartGuide))
	console.Println(colorBlue("   JavaScript: ") + jsQuickStartGuide)
}

func clearSession(sid string) {
	if sid == "all" {
		for _, sid := range getSessionIDs() {
			session, err := loadSessionV2(sid)
			fatalIf(err.Trace(sid), "Unable to load session ‘"+sid+"’.")

			fatalIf(session.Delete().Trace(sid), "Unable to load session ‘"+sid+"’.")
			console.Println(ClearSessionMessage{
				Status:    "success",
				SessionID: sid,
			})
		}
		return
	}

	if !isSession(sid) {
		fatalIf(errDummy().Trace(), "Session ‘"+sid+"’ not found.")
	}

	session, err := loadSessionV2(sid)
	fatalIf(err.Trace(sid), "Unable to load session ‘"+sid+"’.")

	if session != nil {
		fatalIf(session.Delete().Trace(sid), "Unable to load session ‘"+sid+"’.")
		console.Println(ClearSessionMessage{
			Status:    "success",
			SessionID: sid,
		})
	}
}

func mainVersion(ctx *cli.Context) {
	if len(ctx.Args()) != 0 {
		cli.ShowCommandHelpAndExit(ctx, "version", 1)
	}

	console.Println("Version: " + Version)
	console.Println("Release-Tag: " + ReleaseTag)
	console.Println("Commit-ID: " + CommitID)
}

func sessionExecute(bar barSend, s *sessionV1) {
	switch s.CommandType {
	case "cp":
		for cps := range doCopyCmdSession(bar, s) {
			if cps.Error != nil {
				console.Errors(ErrorMessage{
					Message: "Failed with",
					Error:   iodine.New(cps.Error, nil),
				})
			}
			if cps.Done {
				if err := saveSession(s); err != nil {
					console.Fatals(ErrorMessage{
						Message: "Failed with",
						Error:   iodine.New(err, nil),
					})
				}
				console.Println()
				console.Infos(InfoMessage{
					Message: "Session terminated. To resume session type ‘mc session resume " + s.SessionID + "’",
				})
				// this os.Exit is needed really to exit in-case of "os.Interrupt"
				os.Exit(0)
			}
		}
	case "sync":
		for ss := range doSyncCmdSession(bar, s) {
			if ss.Error != nil {
				console.Errors(ErrorMessage{
					Message: "Failed with",
					Error:   iodine.New(ss.Error, nil),
				})
			}
			if ss.Done {
				if err := saveSession(s); err != nil {
					console.Fatals(ErrorMessage{
						Message: "Failed with",
						Error:   iodine.New(err, nil),
					})
				}
				console.Println()
				console.Infos(InfoMessage{
					Message: "Session terminated. To resume session type ‘mc session resume " + s.SessionID + "’",
				})
				// this os.Exit is needed really to exit in-case of "os.Interrupt"
				os.Exit(0)
			}
		}
	}
}

// Prints startup message for command line access. Prints link to our documentation
// and custom platform specific message.
func printCLIAccessMsg(endPoint string) {
	// Get saved credentials.
	cred := serverConfig.GetCredential()

	// Configure 'mc', following block prints platform specific information for minio client.
	console.Println(colorBlue("\nCommand-line Access: ") + mcQuickStartGuide)
	if runtime.GOOS == "windows" {
		mcMessage := fmt.Sprintf("$ mc.exe config host add myminio %s %s %s", endPoint, cred.AccessKeyID, cred.SecretAccessKey)
		console.Println(fmt.Sprintf(getFormatStr(len(mcMessage), 3), mcMessage))
	} else {
		mcMessage := fmt.Sprintf("$ mc config host add myminio %s %s %s", endPoint, cred.AccessKeyID, cred.SecretAccessKey)
		console.Println(fmt.Sprintf(getFormatStr(len(mcMessage), 3), mcMessage))
	}
}

// fatalIf wrapper function which takes error and selectively prints stack frames if available on debug
func fatalIf(err *probe.Error, msg string) {
	if err == nil {
		return
	}
	if globalJSON {
		errorMsg := errorMessage{
			Message: msg,
			Type:    "fatal",
			Cause: causeMessage{
				Message: err.ToGoError().Error(),
				Error:   err.ToGoError(),
			},
			SysInfo: err.SysInfo,
		}
		if globalDebug {
			errorMsg.CallTrace = err.CallTrace
		}
		json, err := json.Marshal(struct {
			Status string       `json:"status"`
			Error  errorMessage `json:"error"`
		}{
			Status: "error",
			Error:  errorMsg,
		})
		if err != nil {
			console.Fatalln(probe.NewError(err))
		}
		console.Println(string(json))
		console.Fatalln()
	}
	if !globalDebug {
		console.Fatalln(fmt.Sprintf("%s %s", msg, err.ToGoError()))
	}
	console.Fatalln(fmt.Sprintf("%s %s", msg, err))
}

// removeAlias - remove alias
func removeAlias(alias string) {
	if alias == "" {
		fatalIf(errDummy().Trace(), "Alias or URL cannot be empty.")
	}
	conf := newConfigV2()
	config, err := quick.New(conf)
	fatalIf(err.Trace(conf.Version), "Failed to initialize ‘quick’ configuration data structure.")

	err = config.Load(mustGetMcConfigPath())
	fatalIf(err.Trace(), "Unable to load config path")
	if isAliasReserved(alias) {
		fatalIf(errDummy().Trace(), fmt.Sprintf("Cannot use a reserved name ‘%s’ as an alias. Following are reserved names: [help, private, readonly, public, authenticated].", alias))
	}
	if !isValidAliasName(alias) {
		fatalIf(errDummy().Trace(), fmt.Sprintf("Alias name ‘%s’ is invalid, valid examples are: mybucket, Area51, Grand-Nagus", alias))
	}
	// convert interface{} back to its original struct
	newConf := config.Data().(*configV2)

	if _, ok := newConf.Aliases[alias]; !ok {
		fatalIf(errDummy().Trace(), fmt.Sprintf("Alias ‘%s’ does not exist.", alias))
	}
	delete(newConf.Aliases, alias)

	newConfig, err := quick.New(newConf)
	fatalIf(err.Trace(conf.Version), "Failed to initialize ‘quick’ configuration data structure.")

	err = writeConfig(newConfig)
	fatalIf(err.Trace(alias), "Unable to save alias ‘"+alias+"’.")

	console.Println(AliasMessage{
		op:    "remove",
		Alias: alias,
	})
}

// Migrate session version '5' to version '6', all older sessions are
// in-fact removed and not migrated. All session files from '6' and
// above should be migrated - See: migrateSessionV6ToV7().
func migrateSessionV5ToV6() {
	for _, sid := range getSessionIDs() {
		sV6Header, err := loadSessionV6Header(sid)
		if err != nil {
			if os.IsNotExist(err.ToGoError()) {
				continue
			}
			fatalIf(err.Trace(sid), "Unable to load version ‘6’. Migration failed please report this issue at https://github.com/minio/mc/issues.")
		}

		sessionVersion, e := strconv.Atoi(sV6Header.Version)
		fatalIf(probe.NewError(e), "Unable to load version ‘6’. Migration failed please report this issue at https://github.com/minio/mc/issues.")
		if sessionVersion > 5 { // It is new format.
			continue
		}

		/*** Remove all session files older than v6 ***/

		sessionFile, err := getSessionFile(sid)
		fatalIf(err.Trace(sid), "Unable to get session file.")

		sessionDataFile, err := getSessionDataFile(sid)
		fatalIf(err.Trace(sid), "Unable to get session data file.")

		console.Println("Removing unsupported session file ‘" + sessionFile + "’ version ‘" + sV6Header.Version + "’.")
		if e := os.Remove(sessionFile); e != nil {
			fatalIf(probe.NewError(e), "Unable to remove version ‘"+sV6Header.Version+"’ session file ‘"+sessionFile+"’.")
		}
		if e := os.Remove(sessionDataFile); e != nil {
			fatalIf(probe.NewError(e), "Unable to remove version ‘"+sV6Header.Version+"’ session data file ‘"+sessionDataFile+"’.")
		}
	}
}

// Version '6' to '7' migrates config, removes previous fields related
// to backend types and server address. This change further simplifies
// the config for future additions.
func migrateV6ToV7() error {
	cv6, err := loadConfigV6()
	if err != nil {
		if os.IsNotExist(err) {
			return nil
		}
		return fmt.Errorf("Unable to load config version ‘6’. %v", err)
	}
	if cv6.Version != "6" {
		return nil
	}

	// Save only the new fields, ignore the rest.
	srvConfig := &serverConfigV7{}
	srvConfig.Version = "7"
	srvConfig.Credential = cv6.Credential
	srvConfig.Region = cv6.Region
	if srvConfig.Region == "" {
		// Region needs to be set for AWS Signature Version 4.
		srvConfig.Region = "us-east-1"
	}
	srvConfig.Logger.Console = cv6.Logger.Console
	srvConfig.Logger.File = cv6.Logger.File
	srvConfig.Logger.Syslog = cv6.Logger.Syslog
	srvConfig.Notify.AMQP = make(map[string]amqpNotify)
	srvConfig.Notify.ElasticSearch = make(map[string]elasticSearchNotify)
	srvConfig.Notify.Redis = make(map[string]redisNotify)
	if len(cv6.Notify.AMQP) == 0 {
		srvConfig.Notify.AMQP["1"] = amqpNotify{}
	} else {
		srvConfig.Notify.AMQP = cv6.Notify.AMQP
	}
	if len(cv6.Notify.ElasticSearch) == 0 {
		srvConfig.Notify.ElasticSearch["1"] = elasticSearchNotify{}
	} else {
		srvConfig.Notify.ElasticSearch = cv6.Notify.ElasticSearch
	}
	if len(cv6.Notify.Redis) == 0 {
		srvConfig.Notify.Redis["1"] = redisNotify{}
	} else {
		srvConfig.Notify.Redis = cv6.Notify.Redis
	}

	qc, err := quick.New(srvConfig)
	if err != nil {
		return fmt.Errorf("Unable to initialize the quick config. %v", err)
	}
	configFile, err := getConfigFile()
	if err != nil {
		return fmt.Errorf("Unable to get config file. %v", err)
	}

	err = qc.Save(configFile)
	if err != nil {
		return fmt.Errorf("Failed to migrate config from ‘"+cv6.Version+"’ to ‘"+srvConfig.Version+"’ failed. %v", err)
	}

	console.Println("Migration from version ‘" + cv6.Version + "’ to ‘" + srvConfig.Version + "’ completed successfully.")
	return nil
}

// mainDiff - is a handler for mc diff command
func mainDiff(ctx *cli.Context) {
	checkDiffSyntax(ctx)

	console.SetCustomTheme(map[string]*color.Color{
		"DiffMessage":     color.New(color.FgGreen, color.Bold),
		"DiffOnlyInFirst": color.New(color.FgRed, color.Bold),
		"DiffType":        color.New(color.FgYellow, color.Bold),
		"DiffSize":        color.New(color.FgMagenta, color.Bold),
	})

	config := mustGetMcConfig()
	firstArg := ctx.Args().First()
	secondArg := ctx.Args().Last()

	firstURL, err := getCanonicalizedURL(firstArg, config.Aliases)
	fatalIf(err.Trace(firstArg), "Unable to parse first argument ‘"+firstArg+"’.")

	secondURL, err := getCanonicalizedURL(secondArg, config.Aliases)
	fatalIf(err.Trace(secondArg), "Unable to parse second argument ‘"+secondArg+"’.")

	newFirstURL := stripRecursiveURL(firstURL)
	for diff := range doDiffCmd(newFirstURL, secondURL, isURLRecursive(firstURL)) {
		fatalIf(diff.Error.Trace(newFirstURL, secondURL), "Failed to diff ‘"+firstURL+"’ and ‘"+secondURL+"’.")
		console.Println(diff.String())
	}
}