cic-internal-integration/apps/cic-eth/cic_eth/admin/nonce.py

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# standard imports
import logging
# external imports
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import celery
from chainlib.chain import ChainSpec
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from chainlib.connection import RPCConnection
from chainlib.eth.tx import (
unpack,
TxFactory,
)
from chainlib.eth.gas import OverrideGasOracle
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from chainqueue.query import get_tx
from chainqueue.state import set_cancel
from chainqueue.db.models.otx import Otx
from chainqueue.db.models.tx import TxCache
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from hexathon import strip_0x
from potaahto.symbols import snake_and_camel
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# local imports
from cic_eth.db.models.base import SessionBase
from cic_eth.db.models.nonce import Nonce
from cic_eth.admin.ctrl import (
lock_send,
unlock_send,
lock_queue,
unlock_queue,
)
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from cic_eth.queue.tx import queue_create
from cic_eth.eth.gas import create_check_gas_task
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celery_app = celery.current_app
logg = logging.getLogger()
@celery_app.task(bind=True)
def shift_nonce(self, chain_str, tx_hash_orig_hex, delta=1):
"""Shift all transactions with nonces higher than the offset by the provided position delta.
Transactions who are replaced by transactions that move nonces will be marked as OVERRIDDEN.
:param chainstr: Chain specification string representation
:type chainstr: str
:param tx_hash_orig_hex: Transaction hash to resolve to sender and nonce to use as shift offset
:type tx_hash_orig_hex: str, 0x-hex
:param delta: Amount
"""
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chain_spec = ChainSpec.from_chain_str(chain_str)
rpc = RPCConnection.connect(chain_spec, 'default')
rpc_signer = RPCConnection.connect(chain_spec, 'signer')
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queue = None
try:
queue = self.request.delivery_info.get('routing_key')
except AttributeError:
pass
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session = SessionBase.create_session()
tx_brief = get_tx(chain_spec, tx_hash_orig_hex, session=session)
tx_raw = bytes.fromhex(strip_0x(tx_brief['signed_tx']))
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tx = unpack(tx_raw, chain_spec)
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nonce = tx_brief['nonce']
address = tx['from']
logg.debug('shifting nonce {} position(s) for address {}, offset {}'.format(delta, address, nonce))
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lock_queue(None, chain_spec.asdict(), address=address)
lock_send(None, chain_spec.asdict(), address=address)
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q = session.query(Otx)
q = q.join(TxCache)
q = q.filter(TxCache.sender==address)
q = q.filter(Otx.nonce>=nonce+delta)
q = q.order_by(Otx.nonce.asc())
otxs = q.all()
tx_hashes = []
txs = []
for otx in otxs:
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tx_raw = bytes.fromhex(strip_0x(otx.signed_tx))
tx_new = unpack(tx_raw, chain_spec)
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tx_new = snake_and_camel(tx_new)
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tx_previous_hash_hex = tx_new['hash']
tx_previous_nonce = tx_new['nonce']
del(tx_new['hash'])
del(tx_new['hash_unsigned'])
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tx_new['gas_price'] += 1
tx_new['gasPrice'] = tx_new['gas_price']
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tx_new['nonce'] -= delta
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logg.debug('tx_nex {}'.format(tx_new))
gas_oracle = OverrideGasOracle(limit=tx_new['gas'], price=tx_new['gas_price'] + 1) # TODO: it should be possible to merely set this price here and if missing in the existing struct then fill it in (chainlib.eth.tx)
c = TxFactory(chain_spec, signer=rpc_signer, gas_oracle=gas_oracle)
(tx_hash_hex, tx_signed_raw_hex) = c.build_raw(tx_new)
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logg.debug('tx {} -> {} nonce {} -> {}'.format(tx_previous_hash_hex, tx_hash_hex, tx_previous_nonce, tx_new['nonce']))
otx = Otx(
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tx_new['nonce'],
tx_hash_hex,
tx_signed_raw_hex,
)
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session.add(otx)
session.commit()
# TODO: cancel all first, then replace. Otherwise we risk two non-locked states for two different nonces.
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set_cancel(chain_spec, tx_previous_hash_hex, manual=True, session=session)
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TxCache.clone(tx_previous_hash_hex, tx_hash_hex, session=session)
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tx_hashes.append(tx_hash_hex)
txs.append(tx_signed_raw_hex)
session.close()
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s = create_check_gas_task(
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txs,
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chain_spec,
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tx_new['from'],
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gas=tx_new['gas'],
tx_hashes_hex=tx_hashes,
queue=queue,
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)
s_unlock_send = celery.signature(
'cic_eth.admin.ctrl.unlock_send',
[
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chain_spec.asdict(),
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tx_new['from'],
],
queue=queue,
)
s_unlock_direct = celery.signature(
'cic_eth.admin.ctrl.unlock_queue',
[
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chain_spec.asdict(),
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tx_new['from'],
],
queue=queue,
)
s_unlocks = celery.group(s_unlock_send, s_unlock_direct)
s.link(s_unlocks)
s.apply_async()