nimbus-eth1/nimbus/p2p/executor.nim

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2018-12-04 11:42:55 +00:00
Feature/goerli replay clique poa (#743) * extract unused clique/mining support into separate file why: mining is currently unsupported by nimbus * Replay first 51840 transactions from Goerli block chain why: Currently Goerli is loaded but the block headers are not verified. Replaying allows real data PoA development. details: Simple stupid gzipped dump/undump layer for debugging based on the zlib module (no nim-faststream support.) This is a replay running against p2p/chain.persistBlocks() where the data were captured from. * prepare stubs for PoA engine * split executor source into sup-modules why: make room for updates, clique integration should go into executor/update_poastate.nim * Simplify p2p/executor.processBlock() function prototype why: vmState argument always wraps basicChainDB * split processBlock() into sub-functions why: isolate the part where it will support clique/poa * provided additional processTransaction() function prototype without _fork_ argument why: with the exception of some tests, the _fork_ argument is always derived from the other prototype argument _vmState_ details: similar situation with makeReceipt() * provide new processBlock() version explicitly supporting PoA details: The new processBlock() version supporting PoA is the general one also supporting non-PoA networks, it needs an additional _Clique_ descriptor function argument for PoA state (if any.) The old processBlock() function without the _Clique_ descriptor argument retorns an error on PoA networgs (e.g. Goerli.) * re-implemented Clique descriptor as _ref object_ why: gives more flexibility when moving around the descriptor object details: also cleaned up a bit the clique sources * comments for clarifying handling of Clique/PoA state descriptor
2021-07-06 13:14:45 +00:00
# Nimbus
# Copyright (c) 2018 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed except
# according to those terms.
import
./executor/[
executor_helpers,
process_block,
process_transaction]
export
executor_helpers.createBloom,
process_block,
process_transaction
#[
method executeTransaction(vmState: BaseVMState, transaction: Transaction): (Computation, BlockHeader) {.base.}=
# Execute the transaction in the vm
# TODO: introduced here: https://github.com/ethereum/py-evm/commit/21c57f2d56ab91bb62723c3f9ebe291d0b132dde
# Refactored/Removed here: https://github.com/ethereum/py-evm/commit/cc991bf
# Deleted here: https://github.com/ethereum/py-evm/commit/746defb6f8e83cee2c352a0ab8690e1281c4227c
raise newException(ValueError, "Must be implemented by subclasses")
method addTransaction*(vmState: BaseVMState, transaction: Transaction, c: Computation, b: Block): (Block, Table[string, string]) =
# Add a transaction to the given block and
# return `trieData` to store the transaction data in chaindb in VM layer
# Update the bloomFilter, transaction trie and receipt trie roots, bloom_filter,
# bloom, and usedGas of the block
# transaction: the executed transaction
# computation: the Computation object with executed result
# block: the Block which the transaction is added in
# var receipt = vmState.makeReceipt(transaction, computation)
# vmState.add_receipt(receipt)
# block.transactions.append(transaction)
# # Get trie roots and changed key-values.
# tx_root_hash, tx_kv_nodes = make_trie_root_and_nodes(block.transactions)
# receipt_root_hash, receipt_kv_nodes = make_trie_root_and_nodes(self.receipts)
# trie_data = merge(tx_kv_nodes, receipt_kv_nodes)
# block.bloom_filter |= receipt.bloom
# block.header.transaction_root = tx_root_hash
# block.header.receipt_root = receipt_root_hash
# block.header.bloom = int(block.bloom_filter)
# block.header.gas_used = receipt.gas_used
# return block, trie_data
result = (b, initTable[string, string]())
method applyTransaction*(
vmState: BaseVMState,
transaction: Transaction,
b: Block,
isStateless: bool): (Computation, Block, Table[string, string]) =
# Apply transaction to the given block
# transaction: the transaction need to be applied
# b: the block which the transaction applies on
# isStateless: if isStateless, call vmState.addTransaction to set block
if isStateless:
var ourBlock = b # deepcopy
vmState.blockHeader = b.header
var (computation, blockHeader) = vmState.executeTransaction(transaction)
ourBlock.header = blockHeader
var trieData: Table[string, string]
(ourBlock, trieData) = vmState.addTransaction(transaction, computation, ourBlock)
result = (computation, ourBlock, trieData)
else:
var (computation, blockHeader) = vmState.executeTransaction(transaction)
return (computation, nil, initTable[string, string]())
]#