def add_blockchain_accounts(
self,
blockchain: SupportedBlockchain,
account_data: List[BlockchainAccountData],
) -> BlockchainBalancesUpdate:
"""Adds new blockchain accounts
Adds the accounts to the blockchain instance and queries them to get the
updated balances. Also adds them in the DB
May raise:
- EthSyncError from modify_blockchain_account
- InputError if the given accounts list is empty.
- TagConstraintError if any of the given account data contain unknown tags.
- RemoteError if an external service such as Etherscan is queried and
there is a problem with its query.
"""
self.data.db.ensure_tags_exist(
given_data=account_data,
action='adding',
data_type='blockchain accounts',
)
address_type = blockchain.get_address_type()
updated_balances = self.chain_manager.add_blockchain_accounts(
blockchain=blockchain,
accounts=[address_type(entry.address) for entry in account_data],
)
self.data.db.add_blockchain_accounts(
blockchain=blockchain,
account_data=account_data,
)
return updated_balances
def add_blockchain_account(self, given_blockchain: str, given_account: str):
try:
blockchain = SupportedBlockchain(given_blockchain)
except ValueError:
msg = f'Tried to add blockchain account for unsupported blockchain {given_blockchain}'
return simple_result(False, msg)
account = cast(BlockchainAddress, given_account)
return self.rotkehlchen.add_blockchain_account(blockchain, account)
def remove_blockchain_account(self, given_blockchain: str,
given_account: str):
try:
blockchain = SupportedBlockchain(given_blockchain)
except ValueError:
msg = (
f'Tried to remove blockchain account for unsupported blockchain {given_blockchain}'
)
return simple_result(False, msg)
return self.rotkehlchen.remove_blockchain_account(
blockchain, given_account)
def _ens_lookup(
self,
web3: Optional[Web3],
name: str,
blockchain: SupportedBlockchain = SupportedBlockchain.ETHEREUM,
) -> Optional[Union[ChecksumEthAddress, HexStr]]:
"""Performs an ENS lookup and returns address if found else None
TODO: currently web3.py 5.15.0 does not support multichain ENS domains
(EIP-2304), therefore requesting a non-Ethereum address won't use the
web3 ens library and will require to extend the library resolver ABI.
An issue in their repo (#1839) reporting the lack of support has been
created. This function will require refactoring once they include
support for EIP-2304.
https://github.com/ethereum/web3.py/issues/1839
May raise:
- RemoteError if Etherscan is used and there is a problem querying it or
parsing its response
"""
normal_name = normalize_name(name)
resolver_addr = self._call_contract(
web3=web3,
contract_address=ENS_MAINNET_ADDR,
abi=ENS_ABI,
method_name='resolver',
arguments=[normal_name_to_hash(normal_name)],
)
if is_none_or_zero_address(resolver_addr):
return None
ens_resolver_abi = ENS_RESOLVER_ABI.copy()
arguments = [normal_name_to_hash(normal_name)]
if blockchain != SupportedBlockchain.ETHEREUM:
ens_resolver_abi.extend(ENS_RESOLVER_ABI_MULTICHAIN_ADDRESS)
arguments.append(blockchain.ens_coin_type())
address = self._call_contract(
web3=web3,
contract_address=to_checksum_address(resolver_addr),
abi=ens_resolver_abi,
method_name='addr',
arguments=arguments,
)
if is_none_or_zero_address(address):
return None
if blockchain != SupportedBlockchain.ETHEREUM:
return HexStr(address.hex())
return to_checksum_address(address)
