Example #1
0
// SetupLogging will initialize the logger backend and set the flags.
func SetupLogging() {

	lfmt := LogFormats[os.Getenv(envLoggingFmt)]
	if lfmt == "" {
		lfmt = LogFormats[defaultLogFormat]
	}

	backend := logging.NewLogBackend(os.Stderr, "", 0)
	logging.SetBackend(backend)
	logging.SetFormatter(logging.MustStringFormatter(lfmt))

	lvl := logging.ERROR

	if logenv := os.Getenv(envLogging); logenv != "" {
		var err error
		lvl, err = logging.LogLevel(logenv)
		if err != nil {
			fmt.Println("error setting log levels", err)
		}
	}

	SetAllLoggers(lvl)
}
Example #2
0
// Global writer group for logs to output to
var WriterGroup = NewMirrorWriter()

type Option func()

// Configure applies the provided options sequentially from left to right
func Configure(options ...Option) {
	for _, f := range options {
		f()
	}
}

// LdJSONFormatter Option formats the event log as line-delimited JSON
var LdJSONFormatter = func() {
	logging.SetFormatter(&PoliteJSONFormatter{})
}

// TextFormatter Option formats the event log as human-readable plain-text
var TextFormatter = func() {
	logging.SetFormatter(logging.DefaultFormatter)
}

func Output(w io.Writer) Option {
	return func() {
		backend := logging.NewLogBackend(w, "", 0)
		logging.SetBackend(backend)
		// TODO return previous Output option
	}
}