Pass accessList in extenal EVM calls

Author: dzajkowski

src/main/scala/io/iohk/ethereum/extvm/VMClient.scala

@@ -125,7 +125,6 @@ class VMClient(externalVmConfig: VmConfig.ExternalConfig, messageHandler: Messag
       Nil,
       resultMsg.gasRefund,
       if (resultMsg.error) Some(OutOfGas) else None,
-      // FIXME handle accessed addresses and storage in extVM
       accessedResultTuple._1,
       accessedResultTuple._2
     )

src/main/scala/io/iohk/ethereum/extvm/VMServer.scala

@@ -1,7 +1,6 @@
 package io.iohk.ethereum.extvm
 
 import java.nio.ByteOrder
-
 import akka.NotUsed
 import akka.actor.ActorSystem
 import akka.stream.OverflowStrategy
@@ -17,13 +16,12 @@ import scala.annotation.tailrec
 import scala.util.Failure
 import scala.util.Success
 import scala.util.Try
-
 import com.google.protobuf.{ByteString => GByteString}
 import com.typesafe.config.ConfigFactory
-
 import io.iohk.ethereum.domain.Address
 import io.iohk.ethereum.domain.BlockHeader
 import io.iohk.ethereum.extvm.Implicits._
+import io.iohk.ethereum.extvm.msg.{AccessListData, StorageEntry}
 import io.iohk.ethereum.utils._
 import io.iohk.ethereum.vm.BlockchainConfigForEvm
 import io.iohk.ethereum.vm.EvmConfig
@@ -106,6 +104,7 @@ class VMServer(messageHandler: MessageHandler) extends Logger {
     messageHandler.close()
   }
 
+  // scalastyle:off method.length
   private def constructContextFromMsg(contextMsg: msg.CallContext): ProgramContext[World, Storage] = {
     import ByteString.{empty => irrelevant} // used for irrelevant BlockHeader fields
 
@@ -136,6 +135,10 @@ class VMServer(messageHandler: MessageHandler) extends Logger {
     val recipientAddr: Option[Address] =
       Option(contextMsg.recipientAddr).filterNot(_.isEmpty).map(bytes => Address(bytes: ByteString))
 
+    val (warmAddresses: Set[Address], warmStorage: Set[(Address, BigInt)]) = contextMsg.extraData.accessList
+      .map(extractWarmAccessList)
+      .getOrElse((Set.empty[Address], Set.empty[(Address, BigInt)]))
+
     ProgramContext(
       callerAddr = contextMsg.callerAddr,
       originAddr = contextMsg.callerAddr,
@@ -152,11 +155,19 @@ class VMServer(messageHandler: MessageHandler) extends Logger {
       initialAddressesToDelete = Set(),
       evmConfig = vmConfig,
       originalWorld = world,
-      // TODO ETCM-1202 use access list from CallContext
-      warmAddresses = Set.empty,
-      warmStorage = Set.empty
+      warmAddresses = warmAddresses,
+      warmStorage = warmStorage
     )
   }
+  // scalastyle:on method.length
+
+  private def extractWarmAccessList(ald: AccessListData): (Set[Address], Set[(Address, BigInt)]) = {
+    val warmAddresses: Set[Address] = ald.addresses.toSet.map((bs: GByteString) => Address(bs: ByteString))
+    val warmStorage: Set[(Address, BigInt)] = ald.storageLocations.toSet.map { (se: StorageEntry) =>
+      (Address(se.address: ByteString), se.storageLocation: BigInt)
+    }
+    (warmAddresses, warmStorage)
+  }
 
   private def buildResultMsg(result: ProgramResult[World, Storage]): msg.CallResult = {