logging

type Ctx log15.Ctx

type Logger interface {
	Let(ctx ...interface{}) Logger
	With(ctx context.Context) Logger
	At(names ...string) Logger
	Stack() Logger

	Debug(msg string, ctx ...interface{})
	Info(msg string, ctx ...interface{})
	Warn(msg string, ctx ...interface{})
	Error(msg string, ctx ...interface{})
	Crit(msg string, ctx ...interface{})
}

type LoggerBuilder interface {
	Let(args ...interface{}) LoggerBuilder
	With(ctx context.Context) LoggerBuilder
	At(names ...string) LoggerBuilder

	Build() Logger
}