import std/tables, eth/[common, rlp], chronicles, eth/trie/[db, trie_defs], ./db/[db_chain, state_db], "."/[constants, chain_config, forks, p2p/gaslimit] {.push raises: [Defect].} # ------------------------------------------------------------------------------ # Public functions # ------------------------------------------------------------------------------ proc newStateDB*(db: TrieDatabaseRef, pruneTrie: bool): AccountStateDB = newAccountStateDB(db, emptyRlpHash, pruneTrie) proc toGenesisHeader*(db: BaseChainDB, sdb: AccountStateDB): BlockHeader {.raises: [Defect, RlpError].} = ## Initialise block chain DB accounts derived from the `genesis.alloc` table ## of the `db` descriptor argument. ## ## The function returns the `Genesis` block header. ## # For `eth/trie/db.newMemoryDB()`, the following initialisation is part of # the constructor function which is missing for the permanent constructor # function `eth/trie/db.trieDB()`. db.db.put(emptyRlpHash.data, emptyRlp) let g = db.genesis for address, account in g.alloc: sdb.setAccount(address, newAccount(account.nonce, account.balance)) sdb.setCode(address, account.code) # Kludge: # # With the pruning persistent version, the initial/trivial key-value # pair `(emptyRlpHash.data,emptyRlp)` will have been deleted after # adding a non-trivial key-value pair in one of the above functions. # This happens in the function/template # # eth/trie/db.del() called by # eth/trie/hexary.prune() invoked by # eth/trie/hexary.origWithNewValue() invoked by # eth/trie/hexary.mergeAt() called by # eth/trie/hexary.put() # # if the database contains the trivial key-value pair, only. # Unfortunately, the *trie* is now empty but the previous root hash # is re-used. This leads to an assert exception in any subsequent # invocation of `eth/trie/hexary.put()`. # # See also https://github.com/status-im/nim-eth/issues/9 where other, # probably related debilities are discussed. # # This kludge also fixes the initial crash described in # https://github.com/status-im/nimbus-eth1/issues/932. if not db.isNil and db.pruneTrie and 0 < account.storage.len: db.db.put(emptyRlpHash.data, emptyRlp) # <-- kludge for k, v in account.storage: sdb.setStorage(address, k, v) result = BlockHeader( nonce: g.nonce, timestamp: g.timestamp, extraData: g.extraData, gasLimit: g.gasLimit, difficulty: g.difficulty, mixDigest: g.mixHash, coinbase: g.coinbase, stateRoot: sdb.rootHash, parentHash: GENESIS_PARENT_HASH, txRoot: EMPTY_ROOT_HASH, receiptRoot: EMPTY_ROOT_HASH, ommersHash: EMPTY_UNCLE_HASH ) let fork = db.config.toFork(0.toBlockNumber) if g.baseFeePerGas.isSome: result.baseFee = g.baseFeePerGas.get() elif fork >= FkLondon: result.baseFee = EIP1559_INITIAL_BASE_FEE.u256 if g.gasLimit.isZero: result.gasLimit = GENESIS_GAS_LIMIT if g.difficulty.isZero and fork <= FkLondon: result.difficulty = GENESIS_DIFFICULTY proc toGenesisHeader*(params: NetworkParams): BlockHeader {.raises: [Defect, RlpError].} = ## Generate the genesis block header from the `params` argument value. let cdb = newBaseChainDB( db = newMemoryDB(), id = params.config.chainId.NetworkId, params = params, pruneTrie = true) let sdb = newStateDB(cdb.db, cdb.pruneTrie) cdb.toGenesisHeader(sdb) proc toGenesisHeader*(db: BaseChainDB): BlockHeader {.raises: [Defect, RlpError].} = ## Generate the genesis block header from the `genesis` and `config` ## fields of the argument `db` descriptor. NetworkParams( config: db.config, genesis: db.genesis).toGenesisHeader() proc initializeEmptyDb*(cdb: BaseChainDB) {.raises: [Defect, CatchableError].} = trace "Writing genesis to DB" let sdb = newStateDB(cdb.db, cdb.pruneTrie) let header = cdb.toGenesisHeader(sdb) doAssert(header.blockNumber.isZero, "can't commit genesis block with number > 0") # faster lookup of curent total difficulty discard cdb.persistHeaderToDb(header) # ------------------------------------------------------------------------------ # End # ------------------------------------------------------------------------------