458 lines
14 KiB
Nim
458 lines
14 KiB
Nim
# Nimbus
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# Copyright (c) 2022-2024 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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# * MIT license ([LICENSE-MIT](LICENSE-MIT))
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# at your option.
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# This file may not be copied, modified, or distributed except according to
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# those terms.
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{.push raises: [].}
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import
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chronicles,
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eth/trie/trie_defs,
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../core/casper,
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../db/[core_db, ledger, storage_types],
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../utils/[utils, ec_recover],
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".."/[constants, errors],
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"."/[chain_config, evmforks, genesis, hardforks]
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export
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chain_config,
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core_db,
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constants,
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errors,
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evmforks,
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hardforks,
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genesis,
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utils
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type
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SyncProgress = object
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start : BlockNumber
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current: BlockNumber
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highest: BlockNumber
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SyncState* = enum
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Waiting
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Syncing
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Synced
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SyncReqNewHeadCB* = proc(header: Header) {.gcsafe, raises: [].}
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## Update head for syncing
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ReqBeaconSyncTargetCB* = proc(header: Header; finHash: Hash32) {.gcsafe, raises: [].}
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## Ditto (for beacon sync)
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NotifyBadBlockCB* = proc(invalid, origin: Header) {.gcsafe, raises: [].}
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## Notify engine-API of encountered bad block
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CommonRef* = ref object
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# all purpose storage
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db: CoreDbRef
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# block chain config
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config: ChainConfig
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# cache of genesis
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genesisHash: Hash32
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genesisHeader: Header
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# map block number and ttd and time to
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# HardFork
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forkTransitionTable: ForkTransitionTable
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# Eth wire protocol need this
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forkIdCalculator: ForkIdCalculator
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networkId: NetworkId
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# synchronizer need this
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syncProgress: SyncProgress
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syncState: SyncState
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syncReqNewHead: SyncReqNewHeadCB
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## Call back function for the sync processor. This function stages
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## the arguent header to a private aerea for subsequent processing.
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reqBeaconSyncTargetCB: ReqBeaconSyncTargetCB
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## Call back function for a sync processor that returns the canonical
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## header.
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notifyBadBlock: NotifyBadBlockCB
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## Allow synchronizer to inform engine-API of bad encountered during sync
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## progress
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startOfHistory: Hash32
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## This setting is needed for resuming blockwise syncying after
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## installing a snapshot pivot. The default value for this field is
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## `GENESIS_PARENT_HASH` to start at the very beginning.
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pos: CasperRef
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## Proof Of Stake descriptor
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pruneHistory: bool
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## Must not not set for a full node, might go away some time
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# ------------------------------------------------------------------------------
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# Forward declarations
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# ------------------------------------------------------------------------------
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proc proofOfStake*(com: CommonRef, header: Header): bool {.gcsafe.}
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# ------------------------------------------------------------------------------
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# Private helper functions
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# ------------------------------------------------------------------------------
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func setForkId(com: CommonRef, genesis: Header) =
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com.genesisHash = genesis.blockHash
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let genesisCRC = crc32(0, com.genesisHash.data)
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com.forkIdCalculator = initForkIdCalculator(
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com.forkTransitionTable,
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genesisCRC,
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genesis.timestamp.uint64)
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func daoCheck(conf: ChainConfig) =
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if not conf.daoForkSupport or conf.daoForkBlock.isNone:
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conf.daoForkBlock = conf.homesteadBlock
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if conf.daoForkSupport and conf.daoForkBlock.isNone:
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conf.daoForkBlock = conf.homesteadBlock
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proc initializeDb(com: CommonRef) =
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let kvt = com.db.ctx.getKvt()
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proc contains(kvt: CoreDbKvtRef; key: openArray[byte]): bool =
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kvt.hasKeyRc(key).expect "valid bool"
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if canonicalHeadHashKey().toOpenArray notin kvt:
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info "Writing genesis to DB"
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doAssert(com.genesisHeader.number == 0.BlockNumber,
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"can't commit genesis block with number > 0")
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doAssert(com.db.persistHeader(com.genesisHeader,
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com.proofOfStake(com.genesisHeader),
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startOfHistory=com.genesisHeader.parentHash),
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"can persist genesis header")
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doAssert(canonicalHeadHashKey().toOpenArray in kvt)
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# The database must at least contain the base and head pointers - the base
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# is implicitly considered finalized
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let
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baseNum = com.db.getSavedStateBlockNumber()
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base =
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try:
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com.db.getBlockHeader(baseNum)
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except BlockNotFound as exc:
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fatal "Cannot load base block header",
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baseNum, err = exc.msg
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quit 1
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finalized =
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try:
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com.db.finalizedHeader()
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except BlockNotFound:
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debug "No finalized block stored in database, reverting to base"
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base
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head =
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try:
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com.db.getCanonicalHead()
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except EVMError as exc:
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fatal "Cannot load canonical block header",
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err = exc.msg
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quit 1
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info "Database initialized",
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base = (base.blockHash, base.number),
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finalized = (finalized.blockHash, finalized.number),
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head = (head.blockHash, head.number)
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proc init(com : CommonRef,
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db : CoreDbRef,
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networkId : NetworkId,
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config : ChainConfig,
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genesis : Genesis,
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pruneHistory: bool,
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) =
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config.daoCheck()
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com.db = db
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com.config = config
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com.forkTransitionTable = config.toForkTransitionTable()
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com.networkId = networkId
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com.syncProgress= SyncProgress()
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com.syncState = Waiting
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com.pruneHistory= pruneHistory
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com.pos = CasperRef.new
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# com.forkIdCalculator and com.genesisHash are set
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# by setForkId
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if genesis.isNil.not:
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let
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forkDeterminer = ForkDeterminationInfo(
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number: 0.BlockNumber,
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td: Opt.some(0.u256),
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time: Opt.some(genesis.timestamp)
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)
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fork = toHardFork(com.forkTransitionTable, forkDeterminer)
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# Must not overwrite the global state on the single state DB
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if not db.getBlockHeader(0.BlockNumber, com.genesisHeader):
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com.genesisHeader = toGenesisHeader(genesis, fork, com.db)
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com.setForkId(com.genesisHeader)
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com.pos.timestamp = genesis.timestamp
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# By default, history begins at genesis.
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com.startOfHistory = GENESIS_PARENT_HASH
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com.initializeDb()
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proc isBlockAfterTtd(com: CommonRef, header: Header): bool =
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if com.config.terminalTotalDifficulty.isNone:
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return false
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let
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ttd = com.config.terminalTotalDifficulty.get()
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ptd = com.db.getScore(header.parentHash).valueOr:
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return false
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td = ptd + header.difficulty
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ptd >= ttd and td >= ttd
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# ------------------------------------------------------------------------------
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# Public constructors
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# ------------------------------------------------------------------------------
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proc new*(
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_: type CommonRef;
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db: CoreDbRef;
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networkId: NetworkId = MainNet;
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params = networkParams(MainNet);
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pruneHistory = false;
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): CommonRef =
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## If genesis data is present, the forkIds will be initialized
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## empty data base also initialized with genesis block
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new(result)
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result.init(
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db,
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networkId,
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params.config,
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params.genesis,
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pruneHistory)
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proc new*(
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_: type CommonRef;
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db: CoreDbRef;
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config: ChainConfig;
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networkId: NetworkId = MainNet;
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pruneHistory = false;
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): CommonRef =
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## There is no genesis data present
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## Mainly used for testing without genesis
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new(result)
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result.init(
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db,
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networkId,
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config,
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nil,
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pruneHistory)
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func clone*(com: CommonRef, db: CoreDbRef): CommonRef =
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## clone but replace the db
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## used in EVM tracer whose db is CaptureDB
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CommonRef(
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db : db,
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config : com.config,
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forkTransitionTable: com.forkTransitionTable,
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forkIdCalculator: com.forkIdCalculator,
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genesisHash : com.genesisHash,
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genesisHeader: com.genesisHeader,
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syncProgress : com.syncProgress,
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networkId : com.networkId,
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pos : com.pos,
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pruneHistory : com.pruneHistory)
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func clone*(com: CommonRef): CommonRef =
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com.clone(com.db)
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# ------------------------------------------------------------------------------
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# Public functions
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# ------------------------------------------------------------------------------
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func toHardFork*(
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com: CommonRef, forkDeterminer: ForkDeterminationInfo): HardFork =
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toHardFork(com.forkTransitionTable, forkDeterminer)
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func toEVMFork*(com: CommonRef, forkDeterminer: ForkDeterminationInfo): EVMFork =
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## similar to toFork, but produce EVMFork
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let fork = com.toHardFork(forkDeterminer)
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ToEVMFork[fork]
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func isSpuriousOrLater*(com: CommonRef, number: BlockNumber): bool =
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com.toHardFork(number.forkDeterminationInfo) >= Spurious
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func isByzantiumOrLater*(com: CommonRef, number: BlockNumber): bool =
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com.toHardFork(number.forkDeterminationInfo) >= Byzantium
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func isLondonOrLater*(com: CommonRef, number: BlockNumber): bool =
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# TODO: Fixme, use only London comparator
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com.toHardFork(number.forkDeterminationInfo) >= London
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func forkId*(com: CommonRef, head, time: uint64): ForkID {.gcsafe.} =
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## EIP 2364/2124
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com.forkIdCalculator.newID(head, time)
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func forkId*(com: CommonRef, head: BlockNumber, time: EthTime): ForkID {.gcsafe.} =
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## EIP 2364/2124
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com.forkIdCalculator.newID(head, time.uint64)
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func isEIP155*(com: CommonRef, number: BlockNumber): bool =
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com.config.eip155Block.isSome and number >= com.config.eip155Block.get
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func isShanghaiOrLater*(com: CommonRef, t: EthTime): bool =
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com.config.shanghaiTime.isSome and t >= com.config.shanghaiTime.get
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func isCancunOrLater*(com: CommonRef, t: EthTime): bool =
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com.config.cancunTime.isSome and t >= com.config.cancunTime.get
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func isPragueOrLater*(com: CommonRef, t: EthTime): bool =
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com.config.pragueTime.isSome and t >= com.config.pragueTime.get
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proc proofOfStake*(com: CommonRef, header: Header): bool =
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if com.config.posBlock.isSome:
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# see comments of posBlock in common/hardforks.nim
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header.number >= com.config.posBlock.get
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elif com.config.mergeForkBlock.isSome:
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header.number >= com.config.mergeForkBlock.get
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else:
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# This costly check is only executed from test suite
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com.isBlockAfterTtd(header)
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proc syncReqNewHead*(com: CommonRef; header: Header)
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{.gcsafe, raises: [].} =
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## Used by RPC updater
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if not com.syncReqNewHead.isNil:
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com.syncReqNewHead(header)
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proc reqBeaconSyncTargetCB*(com: CommonRef; header: Header; finHash: Hash32) =
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## Used by RPC updater
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if not com.reqBeaconSyncTargetCB.isNil:
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com.reqBeaconSyncTargetCB(header, finHash)
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proc notifyBadBlock*(com: CommonRef; invalid, origin: Header)
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{.gcsafe, raises: [].} =
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if not com.notifyBadBlock.isNil:
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com.notifyBadBlock(invalid, origin)
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# ------------------------------------------------------------------------------
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# Getters
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# ------------------------------------------------------------------------------
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func startOfHistory*(com: CommonRef): Hash32 =
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## Getter
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com.startOfHistory
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func pos*(com: CommonRef): CasperRef =
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## Getter
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com.pos
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func db*(com: CommonRef): CoreDbRef =
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com.db
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func eip150Block*(com: CommonRef): Opt[BlockNumber] =
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com.config.eip150Block
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func eip150Hash*(com: CommonRef): Hash32 =
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com.config.eip150Hash
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func daoForkBlock*(com: CommonRef): Opt[BlockNumber] =
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com.config.daoForkBlock
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func daoForkSupport*(com: CommonRef): bool =
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com.config.daoForkSupport
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func ttd*(com: CommonRef): Opt[DifficultyInt] =
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com.config.terminalTotalDifficulty
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func ttdPassed*(com: CommonRef): bool =
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com.config.terminalTotalDifficultyPassed.get(false)
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func pruneHistory*(com: CommonRef): bool =
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com.pruneHistory
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# always remember ChainId and NetworkId
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# are two distinct things that often got mixed
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# because some client do not make distinction
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# between them.
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# And popular networks such as MainNet
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# add more confusion to this
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# by not making a distinction in their value.
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func chainId*(com: CommonRef): ChainId =
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com.config.chainId
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func networkId*(com: CommonRef): NetworkId =
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com.networkId
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func genesisHash*(com: CommonRef): Hash32 =
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## Getter
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com.genesisHash
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func genesisHeader*(com: CommonRef): Header =
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## Getter
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com.genesisHeader
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func syncStart*(com: CommonRef): BlockNumber =
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com.syncProgress.start
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func syncCurrent*(com: CommonRef): BlockNumber =
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com.syncProgress.current
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func syncHighest*(com: CommonRef): BlockNumber =
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com.syncProgress.highest
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func syncState*(com: CommonRef): SyncState =
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com.syncState
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# ------------------------------------------------------------------------------
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# Setters
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# ------------------------------------------------------------------------------
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func `syncStart=`*(com: CommonRef, number: BlockNumber) =
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com.syncProgress.start = number
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func `syncCurrent=`*(com: CommonRef, number: BlockNumber) =
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com.syncProgress.current = number
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func `syncHighest=`*(com: CommonRef, number: BlockNumber) =
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com.syncProgress.highest = number
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func `syncState=`*(com: CommonRef, state: SyncState) =
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com.syncState = state
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func `startOfHistory=`*(com: CommonRef, val: Hash32) =
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## Setter
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com.startOfHistory = val
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func setTTD*(com: CommonRef, ttd: Opt[DifficultyInt]) =
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## useful for testing
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com.config.terminalTotalDifficulty = ttd
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# rebuild the MergeFork piece of the forkTransitionTable
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com.forkTransitionTable.mergeForkTransitionThreshold = com.config.mergeForkTransitionThreshold
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func `syncReqNewHead=`*(com: CommonRef; cb: SyncReqNewHeadCB) =
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## Activate or reset a call back handler for syncing.
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com.syncReqNewHead = cb
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func `reqBeaconSyncTarget=`*(com: CommonRef; cb: ReqBeaconSyncTargetCB) =
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## Activate or reset a call back handler for syncing.
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com.reqBeaconSyncTargetCB = cb
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func `notifyBadBlock=`*(com: CommonRef; cb: NotifyBadBlockCB) =
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## Activate or reset a call back handler for bad block notification.
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com.notifyBadBlock = cb
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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