core

type Action struct {
	// Type of the action
	Type ActionType
	// EntityID of the instance in action
	EntityID EntityID
	// EntityType of the instance in action
	EntityType string
	// Previous is the instance before the action
	Previous interface{}
	// Current is the instance after the action was done
	Current interface{}
}

type ActionType int

type EntityID string

type Event interface {
	Body() []byte
	Time() []byte
	EntityID() EntityID
	Type() string
}

type EventCodec interface {
	// Reduce applies generated events into state
	Reduce(e Event, datastore ds.Datastore, baseKey ds.Key) error
	// Create corresponding events to be dispatched
	Create(ops []Action) ([]Event, error)
}