logger

type Context interface {
	GetLogPrefix() string
}

type ContextL interface {
	Context
	Debugf(f string, params ...interface{})
	Infof(f string, params ...interface{})
	Warnf(f string, params ...interface{})
	Errorf(f string, params ...interface{})

	// Methods accepting one-time subcontexts
	SDebugf(lc Context, f string, params ...interface{})
	SInfof(lc Context, f string, params ...interface{})
	SWarnf(lc Context, f string, params ...interface{})
	SErrorf(lc Context, f string, params ...interface{})

	GetLogger() L
	GetLogContext() Context
}

type ContextLImpl struct {
	Context
	L L
}

type L interface {
	Debugf(lc Context, f string, params ...interface{})
	Infof(lc Context, f string, params ...interface{})
	Warnf(lc Context, f string, params ...interface{})
	Errorf(lc Context, f string, params ...interface{})

	GetUnderlyingLogger() Underlying
}

type LoggerImpl struct {
	UL Underlying
}

type NilContextS struct{}

type SContext struct {
	S string
}

type SubContext struct {
	// contains filtered or unexported fields
}

type Underlying interface {
	Debugf(lp string, f string, params ...interface{})
	Infof(lp string, f string, params ...interface{})
	Warnf(lp string, f string, params ...interface{})
	Errorf(lp string, f string, params ...interface{})
}