193 lines
7.1 KiB
Nim
193 lines
7.1 KiB
Nim
# Nimbus
|
|
# Copyright (c) 2023 Status Research & Development GmbH
|
|
# Licensed under either of
|
|
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
|
|
# * MIT license ([LICENSE-MIT](LICENSE-MIT))
|
|
# at your option.
|
|
# This file may not be copied, modified, or distributed except according to
|
|
# those terms.
|
|
|
|
import
|
|
std/[typetraits],
|
|
eth/common,
|
|
stew/results,
|
|
../web3_eth_conv,
|
|
../beacon_engine,
|
|
../execution_types,
|
|
./api_utils,
|
|
chronicles
|
|
|
|
{.push gcsafe, raises:[CatchableError].}
|
|
|
|
template validateVersion(attrsOpt, com) =
|
|
if attrsOpt.isSome:
|
|
let
|
|
attr = attrsOpt.get
|
|
version = attr.version
|
|
timestamp = ethTime attr.timestamp
|
|
|
|
if com.isCancunOrLater(timestamp):
|
|
if version != Version.V3:
|
|
raise invalidParams("if timestamp is Cancun or later," &
|
|
" payloadAttributes must be PayloadAttributesV3")
|
|
elif com.isShanghaiOrLater(timestamp):
|
|
if version != Version.V2:
|
|
raise invalidParams("if timestamp is Shanghai or later," &
|
|
" payloadAttributes must be PayloadAttributesV2")
|
|
else:
|
|
if version != Version.V1:
|
|
raise invalidParams("if timestamp is earlier than Shanghai," &
|
|
" payloadAttributes must be PayloadAttributesV1")
|
|
|
|
proc forkchoiceUpdated*(ben: BeaconEngineRef,
|
|
update: ForkchoiceStateV1,
|
|
attrsOpt: Option[PayloadAttributes]):
|
|
ForkchoiceUpdatedResponse =
|
|
let
|
|
com = ben.com
|
|
db = com.db
|
|
chain = ben.chain
|
|
blockHash = ethHash update.headBlockHash
|
|
|
|
validateVersion(attrsOpt, com)
|
|
|
|
if blockHash == common.Hash256():
|
|
warn "Forkchoice requested update to zero hash"
|
|
return simpleFCU(PayloadExecutionStatus.invalid)
|
|
|
|
# Check whether we have the block yet in our database or not. If not, we'll
|
|
# need to either trigger a sync, or to reject this forkchoice update for a
|
|
# reason.
|
|
var header: common.BlockHeader
|
|
if not db.getBlockHeader(blockHash, header):
|
|
# If the head hash is unknown (was not given to us in a newPayload request),
|
|
# we cannot resolve the header, so not much to do. This could be extended in
|
|
# the future to resolve from the `eth` network, but it's an unexpected case
|
|
# that should be fixed, not papered over.
|
|
if not ben.get(blockHash, header):
|
|
warn "Forkchoice requested unknown head",
|
|
hash = blockHash
|
|
return simpleFCU(PayloadExecutionStatus.syncing)
|
|
|
|
# Header advertised via a past newPayload request. Start syncing to it.
|
|
# Before we do however, make sure any legacy sync in switched off so we
|
|
# don't accidentally have 2 cycles running.
|
|
if not ben.ttdReached():
|
|
ben.reachTTD()
|
|
# TODO: cancel downloader
|
|
|
|
info "Forkchoice requested sync to new head",
|
|
number = header.blockNumber,
|
|
hash = blockHash.short
|
|
|
|
# Update sync header (if any)
|
|
com.syncReqNewHead(header)
|
|
return simpleFCU(PayloadExecutionStatus.syncing)
|
|
|
|
# Block is known locally, just sanity check that the beacon client does not
|
|
# attempt to push us back to before the merge.
|
|
let blockNumber = header.blockNumber.truncate(uint64)
|
|
if header.difficulty > 0.u256 or blockNumber == 0'u64:
|
|
var
|
|
td, ptd: DifficultyInt
|
|
ttd = com.ttd.get(high(common.BlockNumber))
|
|
|
|
if not db.getTd(blockHash, td) or (blockNumber > 0'u64 and not db.getTd(header.parentHash, ptd)):
|
|
error "TDs unavailable for TTD check",
|
|
number = blockNumber,
|
|
hash = blockHash,
|
|
td = td,
|
|
parent = header.parentHash,
|
|
ptd = ptd
|
|
return simpleFCU(PayloadExecutionStatus.invalid, "TDs unavailable for TDD check")
|
|
|
|
if td < ttd or (blockNumber > 0'u64 and ptd > ttd):
|
|
error "Refusing beacon update to pre-merge",
|
|
number = blockNumber,
|
|
hash = blockHash,
|
|
diff = header.difficulty,
|
|
ptd = ptd,
|
|
ttd = ttd
|
|
|
|
return invalidFCU()
|
|
|
|
# If the head block is already in our canonical chain, the beacon client is
|
|
# probably resyncing. Ignore the update.
|
|
var canonHash: common.Hash256
|
|
if db.getBlockHash(header.blockNumber, canonHash) and canonHash == blockHash:
|
|
# TODO should this be possible?
|
|
# If we allow these types of reorgs, we will do lots and lots of reorgs during sync
|
|
debug "Reorg to previous block"
|
|
if chain.setCanonical(header) != ValidationResult.OK:
|
|
return invalidFCU(com, header)
|
|
elif chain.setCanonical(header) != ValidationResult.OK:
|
|
return invalidFCU(com, header)
|
|
|
|
# If the beacon client also advertised a finalized block, mark the local
|
|
# chain final and completely in PoS mode.
|
|
let finalizedBlockHash = ethHash update.finalizedBlockHash
|
|
if finalizedBlockHash != common.Hash256():
|
|
if not ben.posFinalized:
|
|
ben.finalizePoS()
|
|
|
|
# TODO: If the finalized block is not in our canonical tree, somethings wrong
|
|
var finalBlock: common.BlockHeader
|
|
if not db.getBlockHeader(finalizedBlockHash, finalBlock):
|
|
warn "Final block not available in database",
|
|
hash=finalizedBlockHash
|
|
raise invalidParams("finalized block header not available")
|
|
var finalHash: common.Hash256
|
|
if not db.getBlockHash(finalBlock.blockNumber, finalHash):
|
|
warn "Final block not in canonical chain",
|
|
number=finalBlock.blockNumber,
|
|
hash=finalizedBlockHash
|
|
raise invalidParams("finalized block hash not available")
|
|
if finalHash != finalizedBlockHash:
|
|
warn "Final block not in canonical chain",
|
|
number=finalBlock.blockNumber,
|
|
expect=finalizedBlockHash,
|
|
get=finalHash
|
|
raise invalidParams("finalilized block not canonical")
|
|
db.finalizedHeaderHash(finalizedBlockHash)
|
|
|
|
let safeBlockHash = ethHash update.safeBlockHash
|
|
if safeBlockHash != common.Hash256():
|
|
var safeBlock: common.BlockHeader
|
|
if not db.getBlockHeader(safeBlockHash, safeBlock):
|
|
warn "Safe block not available in database",
|
|
hash = safeBlockHash
|
|
raise invalidParams("safe head not available")
|
|
var safeHash: common.Hash256
|
|
if not db.getBlockHash(safeBlock.blockNumber, safeHash):
|
|
warn "Safe block hash not available in database",
|
|
hash = safeHash
|
|
raise invalidParams("safe block hash not available")
|
|
if safeHash != safeBlockHash:
|
|
warn "Safe block not in canonical chain",
|
|
blockNumber=safeBlock.blockNumber,
|
|
expect=safeBlockHash,
|
|
get=safeHash
|
|
raise invalidParams("safe head not canonical")
|
|
db.safeHeaderHash(safeBlockHash)
|
|
|
|
# If payload generation was requested, create a new block to be potentially
|
|
# sealed by the beacon client. The payload will be requested later, and we
|
|
# might replace it arbitrarilly many times in between.
|
|
if attrsOpt.isSome:
|
|
let attrs = attrsOpt.get()
|
|
let payload = ben.generatePayload(attrs).valueOr:
|
|
error "Failed to create sealing payload", err = error
|
|
raise invalidAttr(error)
|
|
|
|
let id = computePayloadId(blockHash, attrs)
|
|
ben.put(id, ben.blockValue, payload)
|
|
|
|
info "Created payload for sealing",
|
|
id = id.toHex,
|
|
hash = payload.blockHash.short,
|
|
number = payload.blockNumber
|
|
|
|
return validFCU(some(id), blockHash)
|
|
|
|
return validFCU(none(PayloadID), blockHash)
|