service

type Config interface {
	// Get nested config section (sub-map), returns nil if section not found.
	Get(service string) Config

	// Unmarshal unmarshal config data into given struct.
	Unmarshal(out interface{}) error
}

type Container interface {
	// Register add new service to the container under given name.
	Register(name string, service Service)

	// Reconfigure configures all underlying services with given configuration.
	Init(cfg Config) error

	// Check if svc has been registered.
	Has(service string) bool

	// Get returns svc instance by it's name or nil if svc not found. Method returns current service status
	// as second value.
	Get(service string) (svc Service, status int)

	// Serve all configured services. Non blocking.
	Serve() error

	// Close all active services.
	Stop()
}

type Service interface {
	// Init must return configure service and return true if service hasStatus enabled. Must return error in case of
	// misconfiguration. Services must not be used without proper configuration pushed first.
	Init(cfg Config, c Container) (enabled bool, err error)

	// Serve serves.
	Serve() error

	// Stop stops the service.
	Stop()
}