transfer

type MemoryStateStore struct {
	State map[string]interface{}
}

type StateStore interface {
	// Get returns state associated by key
	Get(key string) (interface{}, error)
	// Put associates state with a key
	Put(key string, state interface{})
	// Sub returns a sub StateStore with key prefixed with the given parameter
	Sub(prefix string) StateStore
}

type StatefulComponent interface {
	StopAndSaveState(StateStore) error
	LoadState(StateStore) error
}

type StatefulInput interface {
	SaveState() (interface{}, error)
	LoadState(interface{}) error
}