Type Alias Handler

pub type Handler = Option<Arc<UnboundedSender<Event>>>;

Handler handles state changes of transaction. Handler is called on transaction state change. Usage of e is valid only during call, user must copy needed fields explicitly.

Aliased Type

enum Handler {
    None,
    Some(Arc<UnboundedSender<Event>>),
}

Variants

None

No value.

Some(Arc<UnboundedSender<Event>>)

Some value of type T.