23 lines
558 B
Haskell
23 lines
558 B
Haskell
module Affection.MessageBus where
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import Control.Concurrent.STM as STM
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import Data.IORef
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class Message msg where
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msgPayload :: msg -> Maybe a
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type Channel msg = TChan msg
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class Participant prt where
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partChannel :: (Message msg) => prt -> IORef (Channel msg)
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partConnectChannel :: (Message msg) => prt -> (Channel msg) -> IO ()
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partListen :: (Message msg) => prt -> IO msg
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partBroadcast :: (Message msg) => prt -> msg -> IO ()
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newBroadcastChannel :: IO (Channel msg)
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newBroadcastChannel = atomically $ newBroadcastTChan
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