def dict_to_spoof_transaction(
chain: BaseAsyncChain, header: BlockHeader,
transaction_dict: Dict[str, Any]) -> SpoofTransaction:
"""
Convert dicts used in calls & gas estimates into a spoof transaction
"""
txn_dict = normalize_transaction_dict(transaction_dict)
sender = txn_dict.get('from', ZERO_ADDRESS)
if 'nonce' in txn_dict:
nonce = txn_dict['nonce']
else:
vm = chain.get_vm(header)
nonce = vm.state.account_db.get_nonce(sender)
gas_price = txn_dict.get('gasPrice', 0)
gas = txn_dict.get('gas', header.gas_limit)
unsigned = chain.get_vm_class(header).create_unsigned_transaction(
nonce=nonce,
gas_price=gas_price,
gas=gas,
to=txn_dict['to'],
value=txn_dict['value'],
data=txn_dict['data'],
)
return SpoofTransaction(unsigned, from_=sender)
async def account_db_at_block(chain: BaseAsyncChain,
at_block: Union[str, int],
read_only: bool = True) -> BaseAccountDB:
at_header = await get_header(chain, at_block)
vm = chain.get_vm(at_header)
return vm.state.account_db