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()