nimbus-eth1/nimbus/p2p/chain.nim

66 lines
2.4 KiB
Nim

import ../db/[db_chain, state_db], eth/common, chronicles, ../vm_state, ../vm_types, ../transaction, ranges,
../vm/[computation, interpreter_dispatch, message], ../constants, stint, nimcrypto,
../vm_state_transactions, sugar, ../utils, eth/trie/db, ../tracer, ./executor
type
Chain* = ref object of AbstractChainDB
db: BaseChainDB
proc newChain*(db: BaseChainDB): Chain =
result.new
result.db = db
method genesisHash*(c: Chain): KeccakHash {.gcsafe.} =
c.db.getBlockHash(0.toBlockNumber)
method getBlockHeader*(c: Chain, b: HashOrNum, output: var BlockHeader): bool {.gcsafe.} =
case b.isHash
of true:
c.db.getBlockHeader(b.hash, output)
else:
c.db.getBlockHeader(b.number, output)
method getBestBlockHeader*(c: Chain): BlockHeader {.gcsafe.} =
c.db.getCanonicalHead()
method getSuccessorHeader*(c: Chain, h: BlockHeader, output: var BlockHeader): bool {.gcsafe.} =
let n = h.blockNumber + 1
c.db.getBlockHeader(n, output)
method getBlockBody*(c: Chain, blockHash: KeccakHash): BlockBodyRef =
result = nil
method persistBlocks*(c: Chain, headers: openarray[BlockHeader], bodies: openarray[BlockBody]): ValidationResult =
# Run the VM here
if headers.len != bodies.len:
debug "Number of headers not matching number of bodies"
return ValidationResult.Error
let transaction = c.db.db.beginTransaction()
defer: transaction.dispose()
trace "Persisting blocks", fromBlock = headers[0].blockNumber, toBlock = headers[^1].blockNumber
for i in 0 ..< headers.len:
let head = c.db.getCanonicalHead()
let vmState = newBaseVMState(head.stateRoot, headers[i], c.db)
let validationResult = processBlock(c.db, head, headers[i], bodies[i], vmState)
when not defined(release):
if validationResult == ValidationResult.Error:
dumpDebuggingMetaData(c.db, headers[i], bodies[i], vmState)
raise newException(Exception, "Validation error. Debugging metadata dumped.")
if validationResult != ValidationResult.OK:
result = validationResult
return
discard c.db.persistHeaderToDb(headers[i])
if c.db.getCanonicalHead().blockHash != headers[i].blockHash:
debug "Stored block header hash doesn't match declared hash"
return ValidationResult.Error
c.db.persistTransactions(headers[i].blockNumber, bodies[i].transactions)
c.db.persistReceipts(vmState.receipts)
transaction.commit()