log

type CompositeHandler []Handler

type Config struct {
	Handler Handler
	Exit    ExitFunc
}

type DefaultHandler struct{}

type Entry struct {
	Message   string    `json:"message"`
	Timestamp time.Time `json:"timestamp"`
	Fields    Map       `json:"fields,omitempty"`
	Level     Level     `json:"level"`
}

type ExitFunc func(code int)

type Handler interface {
	Handle(e *Entry)
}

type Level uint8

type LevelHandler struct {
	Level   Level
	Handler Handler
}

type Logger interface {
	// WithField returns a new log entry with the supplied field.
	WithField(key string, value interface{}) Logger

	// WithFields returns a new log entry with the supplied fields appended
	WithFields(fields Map) Logger

	// WithError add a minimal stack trace to the log Entry
	WithError(err error) Logger

	// Debug logs a debug entry
	Debug(v ...interface{})

	// Debugf logs a debug entry with formatting
	Debugf(s string, v ...interface{})

	// Info logs a normal. information, entry
	Info(v ...interface{})

	// Infof logs a normal. information, entry with formatting
	Infof(s string, v ...interface{})

	// Notice logs a notice log entry
	Notice(v ...interface{})

	// Noticef logs a notice log entry with formatting
	Noticef(s string, v ...interface{})

	// Warn logs a warn log entry
	Warn(v ...interface{})

	// Warnf logs a warn log entry with formatting
	Warnf(s string, v ...interface{})

	// Panic logs a panic log entry
	Panic(v ...interface{})

	// Panicf logs a panic log entry with formatting
	Panicf(s string, v ...interface{})

	// Alert logs an alert log entry
	Alert(v ...interface{})

	// Alertf logs an alert log entry with formatting
	Alertf(s string, v ...interface{})

	// Fatal logs a fatal log entry
	Fatal(v ...interface{})

	// Fatalf logs a fatal log entry with formatting
	Fatalf(s string, v ...interface{})

	// Error logs an error log entry
	Error(v ...interface{})

	// Errorf logs an error log entry with formatting
	Errorf(s string, v ...interface{})

	// Fields returns the fields
	Fields() Map
}

type Map = map[string]interface{}