events

type EventManager interface {
	NewPins() chan<- int64
	NewEvents() chan<- int64
	NewSubscriptions() chan<- *fftypes.UUID
	SubscriptionUpdates() chan<- *fftypes.UUID
	DeletedSubscriptions() chan<- *fftypes.UUID
	ChangeEvents() chan<- *fftypes.ChangeEvent
	DeleteDurableSubscription(ctx context.Context, subDef *fftypes.Subscription) (err error)
	CreateUpdateDurableSubscription(ctx context.Context, subDef *fftypes.Subscription, mustNew bool) (err error)
	Start() error
	WaitStop()

	// Bound blockchain callbacks
	OperationUpdate(plugin fftypes.Named, operationID *fftypes.UUID, txState blockchain.TransactionStatus, errorMessage string, opOutput fftypes.JSONObject) error
	BatchPinComplete(bi blockchain.Plugin, batch *blockchain.BatchPin, author string, protocolTxID string, additionalInfo fftypes.JSONObject) error

	// Bound dataexchange callbacks
	TransferResult(dx dataexchange.Plugin, trackingID string, status fftypes.OpStatus, info string, opOutput fftypes.JSONObject) error
	BLOBReceived(dx dataexchange.Plugin, peerID string, hash fftypes.Bytes32, payloadRef string) error
	MessageReceived(dx dataexchange.Plugin, peerID string, data []byte) error

	// Bound token callbacks
	TokensTransferred(tk tokens.Plugin, transfer *fftypes.TokenTransfer, protocolTxID string, additionalInfo fftypes.JSONObject) error

	// Internal events
	sysmessaging.SystemEvents
}