stateroot

type Ledger interface {
	GetConfig() config.Blockchain
	GetDesignatedByRole(role noderoles.Role) (keys.PublicKeys, uint32, error)
	HeaderHeight() uint32
	SubscribeForBlocks(ch chan *block.Block)
	UnsubscribeFromBlocks(ch chan *block.Block)
}

type Message struct {
	Type    MessageType
	Payload io.Serializable
}

type MessageType byte

type RelayCallback = func(*payload.Extensible)

type Service interface {
	Name() string
	OnPayload(p *payload.Extensible) error
	AddSignature(height uint32, validatorIndex int32, sig []byte) error
	GetConfig() config.StateRoot
	// Start runs service instance in a separate goroutine.
	// The service only starts once, subsequent calls to Start are no-op.
	Start()
	// Shutdown stops the service. It can only be called once, subsequent calls
	// to Shutdown on the same instance are no-op. The instance that was stopped can
	// not be started again by calling Start (use a new instance if needed).
	Shutdown()
	// IsAuthorized returns whether state root service currently is authorized to sign
	// state roots. It returns true iff designated StateValidator node's account
	// provided to the state root service in decrypted state.
	IsAuthorized() bool
}

type Vote struct {
	ValidatorIndex int32
	Height         uint32
	Signature      []byte
}