carbon/app.go
func New(configFilename string) *App {
	app := &App{
		ConfigFilename: configFilename,
		Config:         NewConfig(),
		PromRegistry:   prometheus.NewPedanticRegistry(),
		exit:           make(chan bool),
	}

	return app
}
func New(configFilename string) *App {
	app := &App{
		ConfigFilename: configFilename,
		Config:         NewConfig(),
		PromRegistry:   prometheus.NewPedanticRegistry(),
		exit:           make(chan bool),
	}

	return app
}
// New App instance