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|
{-# LANGUAGE OverloadedStrings #-}
module Hsm.Core.Zmq
( withSocket
) where
import Effectful (Eff, IOE, (:>))
import Effectful.Log (Log, LogLevel(LogTrace))
import Effectful.Resource (Resource, allocate)
import Hsm.Core.Log (withLogIO)
import System.ZMQ4 qualified as Z
withSocket ::
(Z.SocketType t, IOE :> es, Log :> es, Resource :> es)
=> t
-> Eff es (Z.Socket t)
withSocket stype = withLogIO >>= bracket
where
bracket logIO = snd . snd <$> allocate acquire release
where
acquire =
logIO LogTrace "Acquiring ZMQ context" >> do
cont <- Z.context
sock <- Z.socket cont stype
return (cont, sock)
release (cont, sock) =
logIO LogTrace "Releasing ZMQ context" >> do
Z.close sock
Z.shutdown cont
|
