aristo: fork support via layers/txframes

hive_integration/nodocker/consensus/consensus_sim.nim

@@ -27,7 +27,7 @@ proc processChainData(cd: ChainData, taskPool: Taskpool): TestStatus =
       cd.params
     )
 
-  let c = newForkedChain(com, com.genesisHeader)
+  let c = ForkedChainRef.init(com)
 
   for bytes in cd.blocksRlp:
     # ignore return value here

hive_integration/nodocker/engine/node.nim

@@ -1,5 +1,5 @@
 # Nimbus
-# Copyright (c) 2024 Status Research & Development GmbH
+# Copyright (c) 2024-2025 Status Research & Development GmbH
 # Licensed under either of
 #  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
 #    http://www.apache.org/licenses/LICENSE-2.0)
@@ -42,8 +42,6 @@ proc processBlock(
   ## implementations (but can be savely removed, as well.)
   ## variant of `processBlock()` where the `header` argument is explicitely set.
   template header: Header = blk.header
-  var dbTx = vmState.com.db.ctx.txFrameBegin()
-  defer: dbTx.dispose()
 
   let com = vmState.com
   if com.daoForkSupport and
@@ -61,61 +59,55 @@ proc processBlock(
       vmState.ledger.addBalance(withdrawal.address, withdrawal.weiAmount)
 
   if header.ommersHash != EMPTY_UNCLE_HASH:
-    discard com.db.persistUncles(blk.uncles)
+    discard vmState.ledger.txFrame.persistUncles(blk.uncles)
 
   # EIP-3675: no reward for miner in POA/POS
-  if com.proofOfStake(header):
+  if com.proofOfStake(header, vmState.ledger.txFrame):
     vmState.calculateReward(header, blk.uncles)
 
   vmState.mutateLedger:
     let clearEmptyAccount = com.isSpuriousOrLater(header.number)
     db.persist(clearEmptyAccount)
 
-  dbTx.commit()
+  vmState.ledger.txFrame.commit()
 
   ok()
 
-proc getVmState(c: ChainRef, header: Header):
-                 Result[BaseVMState, void] =
-  let vmState = BaseVMState()
-  if not vmState.init(header, c.com, storeSlotHash = false):
-    debug "Cannot initialise VmState",
-      number = header.number
-    return err()
-
+proc getVmState(c: ChainRef, header: Header, txFrame: CoreDbTxRef):
+                 Result[BaseVMState, string] =
+  let
+    parent  = ?txFrame.getBlockHeader(header.parentHash)
+    vmState = BaseVMState()
+  vmState.init(parent, header, c.com, txFrame, storeSlotHash = false)
   return ok(vmState)
 
 # A stripped down version of persistBlocks without validation
 # intended to accepts invalid block
 proc setBlock*(c: ChainRef; blk: Block): Result[void, string] =
   template header: Header = blk.header
-  let dbTx = c.db.ctx.txFrameBegin()
-  defer: dbTx.dispose()
+  let txFrame = c.db.ctx.txFrameBegin(nil)
+  defer: txFrame.dispose()
 
   # Needed for figuring out whether KVT cleanup is due (see at the end)
   let
-    vmState = c.getVmState(header).valueOr:
-      return err("no vmstate")
+    vmState = ? c.getVmState(header, txFrame)
   ? vmState.processBlock(blk)
 
-  ? c.db.persistHeaderAndSetHead(header, c.com.startOfHistory)
+  ? txFrame.persistHeaderAndSetHead(header, c.com.startOfHistory)
 
-  c.db.persistTransactions(header.number, header.txRoot, blk.transactions)
-  c.db.persistReceipts(header.receiptsRoot, vmState.receipts)
+  txFrame.persistTransactions(header.number, header.txRoot, blk.transactions)
+  txFrame.persistReceipts(header.receiptsRoot, vmState.receipts)
 
   if blk.withdrawals.isSome:
-    c.db.persistWithdrawals(header.withdrawalsRoot.get, blk.withdrawals.get)
+    txFrame.persistWithdrawals(header.withdrawalsRoot.get, blk.withdrawals.get)
 
   # update currentBlock *after* we persist it
   # so the rpc return consistent result
   # between eth_blockNumber and eth_syncing
   c.com.syncCurrent = header.number
 
-  dbTx.commit()
+  txFrame.commit()
 
-  # The `c.db.persistent()` call is ignored by the legacy DB which
-  # automatically saves persistently when reaching the zero level transaction.
-  #
   # For the `Aristo` database, this code position is only reached if the
   # the parent state of the first block (as registered in `headers[0]`) was
   # the canonical state before updating. So this state will be saved with

hive_integration/nodocker/pyspec/test_env.nim

@@ -1,5 +1,5 @@
 # Nimbus
-# Copyright (c) 2023-2024 Status Research & Development GmbH
+# Copyright (c) 2023-2025 Status Research & Development GmbH
 # Licensed under either of
 #  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
 #    http://www.apache.org/licenses/LICENSE-2.0)
@@ -37,9 +37,9 @@ proc genesisHeader(node: JsonNode): Header =
 proc initializeDb(memDB: CoreDbRef, node: JsonNode): Hash32 =
   let
     genesisHeader = node.genesisHeader
-    ledger = LedgerRef.init(memDB)
+    ledger = LedgerRef.init(memDB.baseTxFrame())
 
-  memDB.persistHeaderAndSetHead(genesisHeader).expect("persistHeader no error")
+  ledger.txFrame.persistHeaderAndSetHead(genesisHeader).expect("persistHeader no error")
   setupLedger(node["pre"], ledger)
   ledger.persist()
   doAssert ledger.getStateRoot == genesisHeader.stateRoot

nimbus/beacon/api_handler/api_exchangeconf.nim

@@ -1,5 +1,5 @@
 # Nimbus
-# Copyright (c) 2023-2024 Status Research & Development GmbH
+# Copyright (c) 2023-2025 Status Research & Development GmbH
 # Licensed under either of
 #  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
 #  * MIT license ([LICENSE-MIT](LICENSE-MIT))
@@ -43,15 +43,15 @@ proc exchangeConf*(ben: BeaconEngineRef,
     terminalBlockHash   = conf.terminalBlockHash
 
   if terminalBlockHash != default(Hash32):
-    let headerHash = db.getBlockHash(terminalBlockNumber).valueOr:
+    let headerHash = db.baseTxFrame().getBlockHash(terminalBlockNumber).valueOr:
       raise newException(ValueError, "cannot get terminal block hash, number $1, msg: $2" %
         [$terminalBlockNumber, error])
 
     if terminalBlockHash != headerHash:
       raise newException(ValueError, "invalid terminal block hash, got $1 want $2" %
         [$terminalBlockHash, $headerHash])
 
-    let header = db.getBlockHeader(headerHash).valueOr:
+    let header = db.baseTxFrame().getBlockHeader(headerHash).valueOr:
       raise newException(ValueError, "cannot get terminal block header, hash $1, msg: $2" %
         [$terminalBlockHash, error])
 

nimbus/beacon/api_handler/api_forkchoice.nim

@@ -76,7 +76,7 @@ proc forkchoiceUpdated*(ben: BeaconEngineRef,
                              ForkchoiceUpdatedResponse =
   let
     com   = ben.com
-    db    = com.db
+    txFrame = ben.chain.latestTxFrame()
     chain = ben.chain
     blockHash = update.headBlockHash
 
@@ -125,8 +125,8 @@ proc forkchoiceUpdated*(ben: BeaconEngineRef,
     let blockNumber = header.number
     if header.difficulty > 0.u256 or blockNumber ==  0'u64:
       let
-        td  = db.getScore(blockHash)
-        ptd = db.getScore(header.parentHash)
+        td  = txFrame.getScore(blockHash)
+        ptd = txFrame.getScore(header.parentHash)
         ttd = com.ttd.get(high(UInt256))
 
       if td.isNone or (blockNumber > 0'u64 and ptd.isNone):
@@ -160,21 +160,22 @@ proc forkchoiceUpdated*(ben: BeaconEngineRef,
 
   # If the beacon client also advertised a finalized block, mark the local
   # chain final and completely in PoS mode.
+  let baseTxFrame = ben.chain.baseTxFrame
   let finalizedBlockHash = update.finalizedBlockHash
   if finalizedBlockHash != default(Hash32):
     if not ben.chain.isCanonical(finalizedBlockHash):
       warn "Final block not in canonical chain",
         hash=finalizedBlockHash.short
       raise invalidForkChoiceState("finalized block not canonical")
-    db.finalizedHeaderHash(finalizedBlockHash)
+    baseTxFrame.finalizedHeaderHash(finalizedBlockHash)
 
   let safeBlockHash = update.safeBlockHash
   if safeBlockHash != default(Hash32):
     if not ben.chain.isCanonical(safeBlockHash):
       warn "Safe block not in canonical chain",
         hash=safeBlockHash.short
       raise invalidForkChoiceState("safe head not canonical")
-    db.safeHeaderHash(safeBlockHash)
+    baseTxFrame.safeHeaderHash(safeBlockHash)
 
   chain.forkChoice(blockHash, finalizedBlockHash).isOkOr:
     return invalidFCU(error, chain, header)

nimbus/beacon/api_handler/api_newpayload.nim

@@ -137,7 +137,7 @@ proc newPayload*(ben: BeaconEngineRef,
 
   let
     com = ben.com
-    db  = com.db
+    txFrame = ben.chain.latestTxFrame()
     timestamp = ethTime payload.timestamp
     version = payload.version
     requestsHash = calcRequestsHash(executionRequests)
@@ -185,9 +185,9 @@ proc newPayload*(ben: BeaconEngineRef,
   let ttd = com.ttd.get(high(UInt256))
 
   if version == Version.V1:
-    let ptd  = db.getScore(header.parentHash).valueOr:
+    let ptd  = txFrame.getScore(header.parentHash).valueOr:
       0.u256
-    let gptd  = db.getScore(parent.parentHash)
+    let gptd  = txFrame.getScore(parent.parentHash)
     if ptd < ttd:
       warn "Ignoring pre-merge payload",
         number = header.number, hash = blockHash.short, ptd, ttd
@@ -216,7 +216,7 @@ proc newPayload*(ben: BeaconEngineRef,
     warn "State not available, ignoring new payload",
       hash   = blockHash,
       number = header.number
-    let blockHash = latestValidHash(db, parent, ttd)
+    let blockHash = latestValidHash(txFrame, parent, ttd)
     return acceptedStatus(blockHash)
 
   trace "Inserting block without sethead",
@@ -229,7 +229,7 @@ proc newPayload*(ben: BeaconEngineRef,
       parent = header.parentHash.short,
       error = vres.error()
     ben.setInvalidAncestor(header, blockHash)
-    let blockHash = latestValidHash(db, parent, ttd)
+    let blockHash = latestValidHash(txFrame, parent, ttd)
     return invalidStatus(blockHash, vres.error())
 
   ben.txPool.removeNewBlockTxs(blk, Opt.some(blockHash))

nimbus/beacon/api_handler/api_utils.nim

@@ -1,5 +1,5 @@
 # Nimbus
-# Copyright (c) 2022-2024 Status Research & Development GmbH
+# Copyright (c) 2022-2025 Status Research & Development GmbH
 # Licensed under either of
 #  * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
 #  * MIT license ([LICENSE-MIT](LICENSE-MIT))
@@ -172,12 +172,13 @@ proc tooLargeRequest*(msg: string): ref InvalidRequest =
     msg: msg
   )
 
-proc latestValidHash*(db: CoreDbRef,
+proc latestValidHash*(txFrame: CoreDbTxRef,
                       parent: Header,
                       ttd: DifficultyInt): Hash32 =
   if parent.isGenesis:
     return default(Hash32)
-  let ptd = db.getScore(parent.parentHash).valueOr(0.u256)
+  # TODO shouldn't this be in forkedchainref?
+  let ptd = txFrame.getScore(parent.parentHash).valueOr(0.u256)
   if ptd >= ttd:
     parent.blockHash
   else:
@@ -192,6 +193,6 @@ proc invalidFCU*(validationError: string,
     return invalidFCU(validationError)
 
   let blockHash =
-    latestValidHash(chain.db, parent, chain.com.ttd.get(high(UInt256)))
+    latestValidHash(chain.latestTxFrame, parent, chain.com.ttd.get(high(UInt256)))
 
   invalidFCU(validationError, blockHash)

nimbus/common/chain_config_hash.nim

@@ -66,11 +66,6 @@ func update[T: ref](ctx: var sha256, val: T) =
   for f in fields(val[]):
     ctx.update(f)
 
-func update(ctx: var sha256, list: openArray[Opt[BlobSchedule]]) =
-  mixin update
-  for val in list:
-    ctx.update(val)
-
 # ------------------------------------------------------------------------------
 # Public functions
 # ------------------------------------------------------------------------------

nimbus/common/common.nim

@@ -121,10 +121,10 @@ func daoCheck(conf: ChainConfig) =
     conf.daoForkBlock = conf.homesteadBlock
 
 proc initializeDb(com: CommonRef) =
-  let kvt = com.db.ctx.getKvt()
-  proc contains(kvt: CoreDbKvtRef; key: openArray[byte]): bool =
-    kvt.hasKeyRc(key).expect "valid bool"
-  if canonicalHeadHashKey().toOpenArray notin kvt:
+  let txFrame = com.db.baseTxFrame()
+  proc contains(txFrame: CoreDbTxRef; key: openArray[byte]): bool =
+    txFrame.hasKeyRc(key).expect "valid bool"
+  if canonicalHeadHashKey().toOpenArray notin txFrame:
     info "Writing genesis to DB",
       blockHash = com.genesisHeader.rlpHash,
       stateRoot = com.genesisHeader.stateRoot,
@@ -134,23 +134,23 @@ proc initializeDb(com: CommonRef) =
       nonce = com.genesisHeader.nonce
     doAssert(com.genesisHeader.number == 0.BlockNumber,
       "can't commit genesis block with number > 0")
-    com.db.persistHeaderAndSetHead(com.genesisHeader,
+    txFrame.persistHeaderAndSetHead(com.genesisHeader,
       startOfHistory=com.genesisHeader.parentHash).
       expect("can persist genesis header")
-    doAssert(canonicalHeadHashKey().toOpenArray in kvt)
+    doAssert(canonicalHeadHashKey().toOpenArray in txFrame)
 
   # The database must at least contain the base and head pointers - the base
   # is implicitly considered finalized
   let
-    baseNum = com.db.getSavedStateBlockNumber()
-    base = com.db.getBlockHeader(baseNum).valueOr:
+    baseNum = txFrame.getSavedStateBlockNumber()
+    base = txFrame.getBlockHeader(baseNum).valueOr:
       fatal "Cannot load base block header",
         baseNum, err = error
       quit 1
-    finalized = com.db.finalizedHeader().valueOr:
+    finalized = txFrame.finalizedHeader().valueOr:
       debug "No finalized block stored in database, reverting to base"
       base
-    head = com.db.getCanonicalHead().valueOr:
+    head = txFrame.getCanonicalHead().valueOr:
       fatal "Cannot load canonical block header",
         err = error
       quit 1
@@ -191,10 +191,12 @@ proc init(com         : CommonRef,
         time: Opt.some(genesis.timestamp)
       )
       fork = toHardFork(com.forkTransitionTable, forkDeterminer)
+      txFrame = db.baseTxFrame()
 
     # Must not overwrite the global state on the single state DB
-    com.genesisHeader = db.getBlockHeader(0.BlockNumber).valueOr:
-      toGenesisHeader(genesis, fork, com.db)
+
+    com.genesisHeader = txFrame.getBlockHeader(0.BlockNumber).valueOr:
+      toGenesisHeader(genesis, fork, txFrame)
 
     com.setForkId(com.genesisHeader)
 
@@ -203,13 +205,13 @@ proc init(com         : CommonRef,
 
   com.initializeDb()
 
-proc isBlockAfterTtd(com: CommonRef, header: Header): bool =
+proc isBlockAfterTtd(com: CommonRef, header: Header, txFrame: CoreDbTxRef): bool =
   if com.config.terminalTotalDifficulty.isNone:
     return false
 
   let
     ttd = com.config.terminalTotalDifficulty.get()
-    ptd = com.db.getScore(header.parentHash).valueOr:
+    ptd = txFrame.getScore(header.parentHash).valueOr:
       return false
     td  = ptd + header.difficulty
   ptd >= ttd and td >= ttd
@@ -321,15 +323,15 @@ func isCancunOrLater*(com: CommonRef, t: EthTime): bool =
 func isPragueOrLater*(com: CommonRef, t: EthTime): bool =
   com.config.pragueTime.isSome and t >= com.config.pragueTime.get
 
-proc proofOfStake*(com: CommonRef, header: Header): bool =
+proc proofOfStake*(com: CommonRef, header: Header, txFrame: CoreDbTxRef): bool =
   if com.config.posBlock.isSome:
     # see comments of posBlock in common/hardforks.nim
     header.number >= com.config.posBlock.get
   elif com.config.mergeNetsplitBlock.isSome:
     header.number >= com.config.mergeNetsplitBlock.get
   else:
     # This costly check is only executed from test suite
-    com.isBlockAfterTtd(header)
+    com.isBlockAfterTtd(header, txFrame)
 
 func depositContractAddress*(com: CommonRef): Address =
   com.config.depositContractAddress.get(default(Address))