Golang Logger.SetFlags方法代码示例

func (m *MultiLogger) AddLogger(l *log.Logger) {
	m.loggers = append(m.loggers, l)
	//Update the just added logger to be consistent with the style of the
	//rest of the loggers.
	l.SetFlags(m.loggers[0].Flags())
	l.SetPrefix(m.loggers[0].Prefix())
}

// CopyLoggerTo arranges for messages to be written to any log.Logger, see
// CopyStandardLogTo for details on behaviour and details
func CopyLoggerTo(name string, logger *stdLog.Logger) {
	sev, ok := severityByName(name)
	if !ok {
		panic(fmt.Sprintf("log.CopyLoggerTo(%q): unrecognized severity name", name))
	}
	// Set a log format that captures the user's file and line:
	//   d.go:23: message
	logger.SetFlags(stdLog.Lshortfile)
	logger.SetOutput(logBridge(sev))
}

// Create a logger using log.* directives in app.conf plus the current settings
// on the default logger.
func getLogger(name string) *log.Logger {
	var logger *log.Logger

	// Create a logger with the requested output. (default to stderr)
	output := Config.StringDefault("log."+name+".output", "stderr")
	var newlog revelLogs

	switch output {
	case "stdout":
		newlog = revelLogs{c: colors[name], w: os.Stdout}
		logger = newLogger(&newlog)
	case "stderr":
		newlog = revelLogs{c: colors[name], w: os.Stderr}
		logger = newLogger(&newlog)
	case "off":
		return newLogger(ioutil.Discard)
	default:
		if !filepath.IsAbs(output) {
			output = filepath.Join(BasePath, output)
		}

		logPath := filepath.Dir(output)
		if err := createDir(logPath); err != nil {
			log.Fatalln(err)
		}

		file, err := os.OpenFile(output, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
		if err != nil {
			log.Fatalln("Failed to open log file", output, ":", err)
		}
		logger = newLogger(file)
	}

	if strings.EqualFold(name, "request") {
		logger.SetFlags(0)
		return logger
	}

	// Set the prefix / flags.
	flags, found := Config.Int("log." + name + ".flags")
	if found {
		logger.SetFlags(flags)
	}

	prefix, found := Config.String("log." + name + ".prefix")
	if found {
		logger.SetPrefix(prefix)
	}

	return logger
}

// Create a logger using log.* directives in app.conf plus the current settings
// on the default logger.
func getLogger(name string) *log.Logger {
	var logger *log.Logger

	// Create a logger with the requested output. (default to stderr)
	output := Config.StringDefault("log."+name+".output", "stderr")

	switch output {
	case "stdout":
		logger = newLogger(os.Stdout)
	case "stderr":
		logger = newLogger(os.Stderr)
	default:
		if output == "off" {
			output = os.DevNull
		}

		dir_path := path.Dir(output)
		_, err := os.Stat(dir_path)
		if os.IsNotExist(err) {
			err = os.MkdirAll(dir_path, 0700)
			if err != nil {
				log.Fatalf("Failed to creating log directory", dir_path, ": ", err)
			}
		}

		file, err := os.OpenFile(output, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
		if err != nil {
			log.Fatalln("Failed to open log file", output, ":", err)
		}
		logger = newLogger(file)
	}

	// Set the prefix / flags.
	flags, found := Config.Int("log." + name + ".flags")
	if found {
		logger.SetFlags(flags)
	}

	prefix, found := Config.String("log." + name + ".prefix")
	if found {
		logger.SetPrefix(prefix)
	}

	return logger
}

// Create a logger using log.* directives in app.conf plus the current settings
// on the default logger.
func getLogger(name string) *log.Logger {
	var logger *log.Logger

	// Create a logger with the requested output. (default to stderr)
	output := Config.StringDefault("log."+name+".output", "stderr")
	var newlog revelLogs

	switch output {
	case "stdout":
		newlog = revelLogs{c: colors[name], w: os.Stdout}
		logger = newLogger(&newlog)
	case "stderr":
		newlog = revelLogs{c: colors[name], w: os.Stderr}
		logger = newLogger(&newlog)
	default:
		if output == "off" {
			output = os.DevNull
		}

		file, err := os.OpenFile(output, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
		if err != nil {
			log.Fatalln("Failed to open log file", output, ":", err)
		}
		logger = newLogger(file)
	}

	// Set the prefix / flags.
	flags, found := Config.Int("log." + name + ".flags")
	if found {
		logger.SetFlags(flags)
	}

	prefix, found := Config.String("log." + name + ".prefix")
	if found {
		logger.SetPrefix(prefix)
	}

	return logger
}

// Create a logger using log.* directives in app.conf plus the current settings
// on the default logger.
func getLogger(name string) *log.Logger {
	var logger *log.Logger

	// Create a logger with the requested output. (default to stderr)
	output, err := Config.String("log." + name + ".output")
	if err != nil {
		output = "stderr"
	}

	switch output {
	case "stdout":
		logger = newLogger(os.Stdout)
	case "stderr":
		logger = newLogger(os.Stderr)
	default:
		if output == "off" {
			output = os.DevNull
		}

		file, err := os.OpenFile(output, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
		if err != nil {
			log.Fatalln("Failed to open log file", output, ":", err)
		}
		logger = newLogger(file)
	}

	// Set the prefix / flags.
	flags, err := Config.Int("log." + name + ".flags")
	if err == nil {
		logger.SetFlags(flags)
	}

	prefix, err := Config.String("log." + name + ".prefix")
	if err == nil {
		logger.SetPrefix(prefix)
	}

	return logger
}

// Create a logger using log.* directives in app.conf plus the current settings
// on the default logger.
func getLogger(name string, original *log.Logger) *log.Logger {
	var logger *log.Logger

	// Create a logger with the requested output. (default to stderr)
	output := Config.StringDefault("log."+name+".output", "")

	switch output {
	case "":
		return original
	case "stdout":
		logger = newLogger(&marsLogs{c: colors[name], w: os.Stdout})
	case "stderr":
		logger = newLogger(&marsLogs{c: colors[name], w: os.Stderr})
	case "off":
		return DisabledLogger
	default:
		file, err := os.OpenFile(output, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
		if err != nil {
			log.Fatalln("Failed to open log file", output, ":", err)
		}
		logger = newLogger(file)
	}

	// Set the prefix / flags.
	flags, found := Config.Int("log." + name + ".flags")
	if found {
		logger.SetFlags(flags)
	}

	prefix, found := Config.String("log." + name + ".prefix")
	if found {
		logger.SetPrefix(prefix)
	}

	return logger
}