Replace AtomicMonadState with Ref

[Tomislav Grospić]

Overview

The purpose of custom definition AtomicMonadState is the same as built in Ref type available in cats effect library.

rchain/shared/src/main/scala/coop/rchain/shared/AtomicMonadState.scala

Lines 10 to 16 in 6e6860a

 class AtomicMonadState[F[_]: Sync, S](state: Atomic[S])(implicit val monad: Monad[F]) 
     extends MonadState[F, S] { 
   def get: F[S]                   = Sync[F].delay(state.get) 
   def set(s: S): F[Unit]          = Sync[F].delay(state.set(s)) 
   def inspect[A](f: S => A): F[A] = Sync[F].delay(f(state.get)) 
   def modify(f: S => S): F[Unit]  = Sync[F].delay(state.transform(f)) 
 } 

We can replace existing use with Ref and remove custom implementation.

• rchain/casper/src/test/scala/coop/rchain/casper/util/comm/TransportLayerTestImpl.scala

  Line 59 in 76f14c5

   new AtomicMonadState[F, NodeMessageQueues](AtomicAny(Map.empty)) 

• rchain/node/src/main/scala/coop/rchain/node/effects/package.scala

  Lines 83 to 84 in f7a1c80

   def rpConfState[F[_]: Monad: Sync](conf: RPConf): MonadState[F, RPConf] = 
     new AtomicMonadState[F, RPConf](AtomicAny(conf))