logger

type Logger interface {
	FD() io.WriteCloser
	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{})
	New(ctx ...interface{}) Logger
}

type MockLogger struct {
	mock.Mock
}

type Options struct {
	LogToStdOut bool
	FilePath    string
}