| Copyright | Alexander Krupenkin 2016-2018 |
|---|---|
| License | BSD3 |
| Maintainer | mail@akru.me |
| Stability | experimental |
| Portability | unportable |
| Safe Haskell | None |
| Language | Haskell2010 |
Network.Ethereum.Contract.Event
Description
Ethereum contract event support.
- data EventAction
- event :: DecodeEvent i ni e => Filter e -> (e -> ReaderT Change Web3 EventAction) -> Web3 (Async ())
- event' :: DecodeEvent i ni e => Filter e -> (e -> ReaderT Change Web3 EventAction) -> Web3 ()
- eventMany' :: DecodeEvent i ni e => Filter e -> Integer -> (e -> ReaderT Change Web3 EventAction) -> Web3 ()
Documentation
data EventAction Source #
Event callback control response
Constructors
| ContinueEvent | Continue to listen events |
| TerminateEvent | Terminate event listener |
Instances
event :: DecodeEvent i ni e => Filter e -> (e -> ReaderT Change Web3 EventAction) -> Web3 (Async ()) Source #
Run 'event\'' one block at a time.
event' :: DecodeEvent i ni e => Filter e -> (e -> ReaderT Change Web3 EventAction) -> Web3 () Source #
Same as event, but does not immediately spawn a new thread.
eventMany' :: DecodeEvent i ni e => Filter e -> Integer -> (e -> ReaderT Change Web3 EventAction) -> Web3 () Source #
'eventMany\'' take s a filter, a window size, and a handler.
It runs the handler over the results of eventLogs results using
reduceEventStream. If no TerminateEvent action is thrown and
the toBlock is not yet reached, it then transitions to polling.