cic-stack/apps/cic-eth/cic_eth/eth/account.py
2021-07-21 17:34:51 +00:00

354 lines
12 KiB
Python

# standard imports
import logging
# external imports
import celery
from erc20_faucet import Faucet
from hexathon import (
strip_0x,
)
from chainlib.eth.constant import ZERO_ADDRESS
from chainlib.connection import RPCConnection
from chainlib.eth.sign import (
new_account,
sign_message,
)
from chainlib.eth.address import to_checksum_address
from chainlib.eth.tx import (
TxFormat,
unpack,
)
from chainlib.chain import ChainSpec
from chainlib.error import JSONRPCException
from eth_accounts_index.registry import AccountRegistry
from eth_accounts_index import AccountsIndex
from sarafu_faucet import MinterFaucet
from chainqueue.sql.tx import cache_tx_dict
# local import
from cic_eth_registry import CICRegistry
from cic_eth.eth.gas import (
create_check_gas_task,
)
#from cic_eth.eth.factory import TxFactory
from cic_eth.db.models.nonce import Nonce
from cic_eth.db.models.base import SessionBase
from cic_eth.db.models.role import AccountRole
from cic_eth.error import (
RoleMissingError,
SignerError,
)
from cic_eth.task import (
CriticalSQLAlchemyTask,
CriticalSQLAlchemyAndSignerTask,
BaseTask,
)
from cic_eth.eth.nonce import (
CustodialTaskNonceOracle,
)
from cic_eth.queue.tx import (
register_tx,
)
logg = logging.getLogger()
celery_app = celery.current_app
# TODO: Separate out nonce initialization task
@celery_app.task(bind=True, base=CriticalSQLAlchemyAndSignerTask)
def create(self, password, chain_spec_dict):
"""Creates and stores a new ethereum account in the keystore.
The password is passed on to the wallet backend, no encryption is performed in the task worker.
:param password: Password to encrypt private key with
:type password: str
:param chain_str: Chain spec string representation
:type chain_str: str
:returns: Ethereum address of newly created account
:rtype: str, 0x-hex
"""
chain_spec = ChainSpec.from_dict(chain_spec_dict)
a = None
conn = RPCConnection.connect(chain_spec, 'signer')
o = new_account()
try:
a = conn.do(o)
except ConnectionError as e:
raise SignerError(e)
except FileNotFoundError as e:
raise SignerError(e)
conn.disconnect()
# TODO: It seems infeasible that a can be None in any case, verify
if a == None:
raise SignerError('create account')
logg.debug('created account {}'.format(a))
# Initialize nonce provider record for account
session = self.create_session()
Nonce.init(a, session=session)
session.commit()
session.close()
return a
@celery_app.task(bind=True, throws=(RoleMissingError,), base=CriticalSQLAlchemyAndSignerTask)
def register(self, account_address, chain_spec_dict, writer_address=None):
"""Creates a transaction to add the given address to the accounts index.
:param account_address: Ethereum address to add
:type account_address: str, 0x-hex
:param chain_str: Chain spec string representation
:type chain_str: str
:param writer_address: Specify address in keystore to sign transaction. Overrides local accounts role setting.
:type writer_address: str, 0x-hex
:raises RoleMissingError: Writer address not set and writer role not found.
:returns: The account_address input param
:rtype: str, 0x-hex
"""
chain_spec = ChainSpec.from_dict(chain_spec_dict)
session = self.create_session()
if writer_address == None:
writer_address = AccountRole.get_address('ACCOUNT_REGISTRY_WRITER', session=session)
if writer_address == ZERO_ADDRESS:
session.close()
raise RoleMissingError('writer address for regsistering {}'.format(account_address))
logg.debug('adding account address {} to index; writer {}'.format(account_address, writer_address))
queue = self.request.delivery_info.get('routing_key')
# Retrieve account index address
rpc = RPCConnection.connect(chain_spec, 'default')
registry = CICRegistry(chain_spec, rpc)
call_address = AccountRole.get_address('DEFAULT', session=session)
if writer_address == ZERO_ADDRESS:
session.close()
raise RoleMissingError('call address for resgistering {}'.format(account_address))
account_registry_address = registry.by_name('AccountRegistry', sender_address=call_address)
# Generate and sign transaction
rpc_signer = RPCConnection.connect(chain_spec, 'signer')
nonce_oracle = CustodialTaskNonceOracle(writer_address, self.request.root_id, session=session) #, default_nonce)
gas_oracle = self.create_gas_oracle(rpc, AccountRegistry.gas)
account_registry = AccountsIndex(chain_spec, signer=rpc_signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
(tx_hash_hex, tx_signed_raw_hex) = account_registry.add(account_registry_address, writer_address, account_address, tx_format=TxFormat.RLP_SIGNED)
rpc_signer.disconnect()
# add transaction to queue
cache_task = 'cic_eth.eth.account.cache_account_data'
register_tx(tx_hash_hex, tx_signed_raw_hex, chain_spec, queue, cache_task=cache_task, session=session)
session.commit()
session.close()
gas_pair = gas_oracle.get_gas(tx_signed_raw_hex)
gas_budget = gas_pair[0] * gas_pair[1]
logg.debug('register user tx {} {} {}'.format(tx_hash_hex, queue, gas_budget))
rpc.disconnect()
s = create_check_gas_task(
[tx_signed_raw_hex],
chain_spec,
writer_address,
gas=gas_budget,
tx_hashes_hex=[tx_hash_hex],
queue=queue,
)
s.apply_async()
return account_address
@celery_app.task(bind=True, base=CriticalSQLAlchemyAndSignerTask)
def gift(self, account_address, chain_spec_dict):
"""Creates a transaction to invoke the faucet contract for the given address.
:param account_address: Ethereum address to give to
:type account_address: str, 0x-hex
:param chain_str: Chain spec string representation
:type chain_str: str
:returns: Raw signed transaction
:rtype: list with transaction as only element
"""
chain_spec = ChainSpec.from_dict(chain_spec_dict)
logg.debug('gift account address {} to index'.format(account_address))
queue = self.request.delivery_info.get('routing_key')
# Retrieve account index address
session = self.create_session()
rpc = RPCConnection.connect(chain_spec, 'default')
registry = CICRegistry(chain_spec, rpc)
faucet_address = registry.by_name('Faucet', sender_address=self.call_address)
# Generate and sign transaction
rpc_signer = RPCConnection.connect(chain_spec, 'signer')
nonce_oracle = CustodialTaskNonceOracle(account_address, self.request.root_id, session=session) #, default_nonce)
gas_oracle = self.create_gas_oracle(rpc, MinterFaucet.gas)
faucet = Faucet(chain_spec, signer=rpc_signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
(tx_hash_hex, tx_signed_raw_hex) = faucet.give_to(faucet_address, account_address, account_address, tx_format=TxFormat.RLP_SIGNED)
rpc_signer.disconnect()
# add transaction to queue
cache_task = 'cic_eth.eth.account.cache_gift_data'
register_tx(tx_hash_hex, tx_signed_raw_hex, chain_spec, queue, cache_task, session=session)
session.commit()
session.close()
gas_pair = gas_oracle.get_gas(tx_signed_raw_hex)
gas_budget = gas_pair[0] * gas_pair[1]
logg.debug('register user tx {} {} {}'.format(tx_hash_hex, queue, gas_budget))
rpc.disconnect()
s = create_check_gas_task(
[tx_signed_raw_hex],
chain_spec,
account_address,
gas_budget,
[tx_hash_hex],
queue=queue,
)
s.apply_async()
return [tx_signed_raw_hex]
@celery_app.task(bind=True)
def have(self, account, chain_spec_dict):
"""Check whether the given account exists in keystore
:param account: Account to check
:type account: str, 0x-hex
:param chain_str: Chain spec string representation
:type chain_str: str
:returns: Account, or None if not exists
:rtype: Varies
"""
chain_spec = ChainSpec.from_dict(chain_spec_dict)
o = sign_message(account, '0x2a')
conn = RPCConnection.connect(chain_spec, 'signer')
try:
conn.do(o)
except ConnectionError as e:
raise SignerError(e)
except FileNotFoundError as e:
raise SignerError(e)
except JSONRPCException as e:
logg.debug('cannot sign with {}: {}'.format(account, e))
conn.disconnect()
return None
conn.disconnect()
return account
@celery_app.task(bind=True, base=CriticalSQLAlchemyTask)
def set_role(self, tag, address, chain_spec_dict):
if not to_checksum_address(address):
raise ValueError('invalid checksum address {}'.format(address))
session = SessionBase.create_session()
role = AccountRole.set(tag, address, session=session)
session.add(role)
session.commit()
session.close()
return tag
@celery_app.task(bind=True, base=BaseTask)
def role(self, address, chain_spec_dict):
"""Return account role for address
:param account: Account to check
:type account: str, 0x-hex
:param chain_str: Chain spec string representation
:type chain_str: str
:returns: Account, or None if not exists
:rtype: Varies
"""
session = self.create_session()
role_tag = AccountRole.role_for(address, session=session)
session.close()
return role_tag
@celery_app.task(bind=True, base=CriticalSQLAlchemyTask)
def cache_gift_data(
self,
tx_hash_hex,
tx_signed_raw_hex,
chain_spec_dict,
):
"""Generates and commits transaction cache metadata for a Faucet.giveTo transaction
:param tx_hash_hex: Transaction hash
:type tx_hash_hex: str, 0x-hex
:param tx_signed_raw_hex: Raw signed transaction
:type tx_signed_raw_hex: str, 0x-hex
:param chain_str: Chain spec string representation
:type chain_str: str
:returns: Transaction hash and id of cache element in storage backend, respectively
:rtype: tuple
"""
chain_spec = ChainSpec.from_dict(chain_spec_dict)
tx_signed_raw_bytes = bytes.fromhex(strip_0x(tx_signed_raw_hex))
tx = unpack(tx_signed_raw_bytes, chain_spec)
tx_data = Faucet.parse_give_to_request(tx['data'])
session = self.create_session()
tx_dict = {
'hash': tx_hash_hex,
'from': tx['from'],
'to': tx['to'],
'source_token': ZERO_ADDRESS,
'destination_token': ZERO_ADDRESS,
'from_value': 0,
'to_value': 0,
}
(tx_dict, cache_id) = cache_tx_dict(tx_dict, session=session)
session.close()
return (tx_hash_hex, cache_id)
@celery_app.task(bind=True, base=CriticalSQLAlchemyTask)
def cache_account_data(
self,
tx_hash_hex,
tx_signed_raw_hex,
chain_spec_dict,
):
"""Generates and commits transaction cache metadata for an AccountsIndex.add transaction
:param tx_hash_hex: Transaction hash
:type tx_hash_hex: str, 0x-hex
:param tx_signed_raw_hex: Raw signed transaction
:type tx_signed_raw_hex: str, 0x-hex
:param chain_str: Chain spec string representation
:type chain_str: str
:returns: Transaction hash and id of cache element in storage backend, respectively
:rtype: tuple
"""
chain_spec = ChainSpec.from_dict(chain_spec_dict)
tx_signed_raw_bytes = bytes.fromhex(tx_signed_raw_hex[2:])
tx = unpack(tx_signed_raw_bytes, chain_spec)
tx_data = AccountsIndex.parse_add_request(tx['data'])
session = SessionBase.create_session()
tx_dict = {
'hash': tx_hash_hex,
'from': tx['from'],
'to': tx['to'],
'source_token': ZERO_ADDRESS,
'destination_token': ZERO_ADDRESS,
'from_value': 0,
'to_value': 0,
}
(tx_dict, cache_id) = cache_tx_dict(tx_dict, session=session)
session.close()
return (tx_hash_hex, cache_id)