def finalize_block(self, block: BlockAPI) -> BlockAPI:
block = super().finalize_block(block)
nonce, mix_hash = pow.mine_pow_nonce(block.number,
block.header.mining_hash,
block.header.difficulty)
return block.copy(
header=block.header.copy(nonce=nonce, mix_hash=mix_hash))
def finalize_block(self, block: BlockAPI) -> BlockAndMetaWitness:
if block.number > 0:
snapshot = self.state.snapshot()
try:
self._assign_block_rewards(block)
except EVMMissingData as exc:
self.state.revert(snapshot)
raise
else:
self.state.commit(snapshot)
# We need to call `persist` here since the state db batches
# all writes until we tell it to write to the underlying db
meta_witness = self.state.persist()
final_block = block.copy(header=block.header.copy(
state_root=self.state.state_root))
self.logger.debug(
"%s reads %d unique node hashes, %d addresses, %d bytecodes, and %d storage slots",
final_block,
len(meta_witness.hashes),
len(meta_witness.accounts_queried),
len(meta_witness.account_bytecodes_queried),
meta_witness.total_slots_queried,
)
return BlockAndMetaWitness(final_block, meta_witness)
def finalize_block(self, block: BlockAPI) -> BlockAndMetaWitness:
block_result = super().finalize_block(block)
block = block_result.block
nonce, mix_hash = pow.mine_pow_nonce(block.number,
block.header.mining_hash,
block.header.difficulty)
mined_block = block.copy(
header=block.header.copy(nonce=nonce, mix_hash=mix_hash))
return BlockAndMetaWitness(mined_block, block_result.meta_witness)
def finalize_block(self, block: BlockAPI) -> BlockAPI:
if block.number > 0:
snapshot = self.state.snapshot()
try:
self._assign_block_rewards(block)
except EVMMissingData as exc:
self.state.revert(snapshot)
raise
else:
self.state.commit(snapshot)
# We need to call `persist` here since the state db batches
# all writes until we tell it to write to the underlying db
self.state.persist()
return block.copy(header=block.header.copy(state_root=self.state.state_root))
def set_block_transactions(self, base_block: BlockAPI,
new_header: BlockHeaderAPI,
transactions: Sequence[SignedTransactionAPI],
receipts: Sequence[ReceiptAPI]) -> BlockAPI:
tx_root_hash, tx_kv_nodes = make_trie_root_and_nodes(transactions)
self.chaindb.persist_trie_data_dict(tx_kv_nodes)
receipt_root_hash, receipt_kv_nodes = make_trie_root_and_nodes(
receipts)
self.chaindb.persist_trie_data_dict(receipt_kv_nodes)
return base_block.copy(
transactions=transactions,
header=new_header.copy(
transaction_root=tx_root_hash,
receipt_root=receipt_root_hash,
),
)
def pack_block(self, block: BlockAPI, *args: Any, **kwargs: Any) -> BlockAPI:
if 'uncles' in kwargs:
uncles = kwargs.pop('uncles')
kwargs.setdefault('uncles_hash', keccak(rlp.encode(uncles)))
else:
uncles = block.uncles
provided_fields = set(kwargs.keys())
known_fields = set(BlockHeader._meta.field_names)
unknown_fields = provided_fields.difference(known_fields)
if unknown_fields:
raise AttributeError(
f"Unable to set the field(s) {', '.join(known_fields)} "
"on the `BlockHeader` class. "
f"Received the following unexpected fields: {', '.join(unknown_fields)}."
)
header = block.header.copy(**kwargs)
packed_block = block.copy(uncles=uncles, header=header)
return packed_block
def pack_block(self, block: BlockAPI, *args: Any,
**kwargs: Any) -> BlockAPI:
"""
Pack block for mining.
:param bytes coinbase: 20-byte public address to receive block reward
:param bytes uncles_hash: 32 bytes
:param bytes state_root: 32 bytes
:param bytes transaction_root: 32 bytes
:param bytes receipt_root: 32 bytes
:param int bloom:
:param int gas_used:
:param bytes extra_data: 32 bytes
:param bytes mix_hash: 32 bytes
:param bytes nonce: 8 bytes
"""
if 'uncles' in kwargs:
uncles = kwargs.pop('uncles')
kwargs.setdefault('uncles_hash', keccak(rlp.encode(uncles)))
else:
uncles = block.uncles
provided_fields = set(kwargs.keys())
known_fields = set(BlockHeader._meta.field_names)
unknown_fields = provided_fields.difference(known_fields)
if unknown_fields:
raise AttributeError(
"Unable to set the field(s) {0} on the `BlockHeader` class. "
"Received the following unexpected fields: {1}.".format(
", ".join(known_fields),
", ".join(unknown_fields),
))
header = block.header.copy(**kwargs)
packed_block = block.copy(uncles=uncles, header=header)
return packed_block