681 lines
22 KiB
Python
681 lines
22 KiB
Python
# standard imports
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import logging
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# third-party imports
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import celery
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import requests
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import web3
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from cic_registry import zero_address
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from cic_registry.chain import ChainSpec
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# local imports
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from .rpc import RpcClient
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from cic_eth.db import Otx, SessionBase
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from cic_eth.db.models.tx import TxCache
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from cic_eth.db.models.lock import Lock
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from cic_eth.db.enum import (
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LockEnum,
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StatusBits,
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)
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from cic_eth.error import PermanentTxError
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from cic_eth.error import TemporaryTxError
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from cic_eth.error import NotLocalTxError
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from cic_eth.queue.tx import create as queue_create
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from cic_eth.queue.tx import get_tx
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from cic_eth.queue.tx import get_nonce_tx
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from cic_eth.error import OutOfGasError
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from cic_eth.error import LockedError
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from cic_eth.eth.util import unpack_signed_raw_tx
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from cic_eth.eth.task import sign_and_register_tx, create_check_gas_and_send_task
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from cic_eth.eth.task import sign_tx
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from cic_eth.eth.nonce import NonceOracle
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from cic_eth.error import AlreadyFillingGasError
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from cic_eth.eth.util import tx_hex_string
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from cic_eth.admin.ctrl import lock_send
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celery_app = celery.current_app
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logg = logging.getLogger()
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MAX_NONCE_ATTEMPTS = 3
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# TODO this function is too long
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@celery_app.task(bind=True, throws=(OutOfGasError))
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def check_gas(self, tx_hashes, chain_str, txs=[], address=None, gas_required=None):
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"""Check the gas level of the sender address of a transaction.
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If the account balance is not sufficient for the required gas, gas refill is requested and OutOfGasError raiser.
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If account balance is sufficient, but level of gas before spend is below "safe" threshold, gas refill is requested, and execution continues normally.
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:param tx_hashes: Transaction hashes due to be submitted
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:type tx_hashes: list of str, 0x-hex
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:param chain_str: Chain spec string representation
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:type chain_str: str
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:param txs: Signed raw transaction data, corresponding to tx_hashes
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:type txs: list of str, 0x-hex
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:param address: Sender address
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:type address: str, 0x-hex
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:param gas_required: Gas limit * gas price for transaction, (optional, if not set will be retrived from transaction data)
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:type gas_required: int
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:return: Signed raw transaction data list
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:rtype: param txs, unchanged
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"""
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if len(txs) == 0:
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for i in range(len(tx_hashes)):
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o = get_tx(tx_hashes[i])
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txs.append(o['signed_tx'])
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logg.debug('ooooo {}'.format(o))
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if address == None:
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address = o['address']
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chain_spec = ChainSpec.from_chain_str(chain_str)
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queue = self.request.delivery_info['routing_key']
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#c = RpcClient(chain_spec, holder_address=address)
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c = RpcClient(chain_spec)
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# TODO: it should not be necessary to pass address explicitly, if not passed should be derived from the tx
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balance = c.w3.eth.getBalance(address)
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logg.debug('address {} has gas {} needs {}'.format(address, balance, gas_required))
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if gas_required > balance:
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s_refill_gas = celery.signature(
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'cic_eth.eth.tx.refill_gas',
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[
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address,
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chain_str,
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],
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queue=queue,
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)
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s_refill_gas.apply_async()
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wait_tasks = []
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for tx_hash in tx_hashes:
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s = celery.signature(
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'cic_eth.queue.tx.set_waitforgas',
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[
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tx_hash,
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],
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queue=queue,
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)
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wait_tasks.append(s)
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celery.group(wait_tasks)()
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raise OutOfGasError('need to fill gas, required {}, had {}'.format(gas_required, balance))
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safe_gas = c.safe_threshold_amount()
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if balance < safe_gas:
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s_refill_gas = celery.signature(
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'cic_eth.eth.tx.refill_gas',
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[
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address,
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chain_str,
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],
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queue=queue,
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)
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s_refill_gas.apply_async()
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logg.debug('requested refill from {} to {}'.format(c.gas_provider(), address))
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ready_tasks = []
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for tx_hash in tx_hashes:
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s = celery.signature(
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'cic_eth.queue.tx.set_ready',
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[
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tx_hash,
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],
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queue=queue,
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)
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ready_tasks.append(s)
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celery.group(ready_tasks)()
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return txs
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# TODO: chain chainable transactions that use hashes as inputs may be chained to this function to output signed txs instead.
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@celery_app.task(bind=True)
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def hashes_to_txs(self, tx_hashes):
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"""Return a list of raw signed transactions from the local transaction queue corresponding to a list of transaction hashes.
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:param tx_hashes: Transaction hashes
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:type tx_hashes: list of str, 0x-hex
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:raises ValueError: Empty input list
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:returns: Signed raw transactions
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:rtype: list of str, 0x-hex
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"""
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if len(tx_hashes) == 0:
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raise ValueError('no transaction to send')
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queue = self.request.delivery_info['routing_key']
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#otxs = ','.format("'{}'".format(tx_hash) for tx_hash in tx_hashes)
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session = SessionBase.create_session()
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q = session.query(Otx.signed_tx)
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q = q.filter(Otx.tx_hash.in_(tx_hashes))
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tx_tuples = q.all()
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session.close()
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def __head(x):
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return x[0]
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txs = []
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for f in map(__head, tx_tuples):
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txs.append(f)
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return txs
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# TODO: Move this and send to subfolder submodule
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class ParityNodeHandler:
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def __init__(self, chain_spec, queue):
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self.chain_spec = chain_spec
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self.chain_str = str(chain_spec)
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self.queue = queue
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def handle(self, exception, tx_hash_hex, tx_hex):
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meth = self.handle_default
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if isinstance(exception, (ValueError)):
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# s_debug = celery.signature(
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# 'cic_eth.admin.debug.out_tmp',
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# [tx_hash_hex, '{}: {}'.format(tx_hash_hex, exception)],
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# queue=queue,
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# )
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# s_debug.apply_async()
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earg = exception.args[0]
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if earg['code'] == -32010:
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logg.debug('skipping lock for code {}'.format(earg['code']))
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meth = self.handle_invalid_parameters
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elif earg['code'] == -32602:
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meth = self.handle_invalid_encoding
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else:
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meth = self.handle_invalid
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elif isinstance(exception, (requests.exceptions.ConnectionError)):
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meth = self.handle_connection
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(t, e_fn, message) = meth(tx_hash_hex, tx_hex)
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return (t, e_fn, '{} {}'.format(message, exception))
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def handle_connection(self, tx_hash_hex, tx_hex):
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s_set_sent = celery.signature(
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'cic_eth.queue.tx.set_sent_status',
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[
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tx_hash_hex,
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True,
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],
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queue=self.queue,
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)
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t = s_set_sent.apply_async()
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return (t, TemporaryTxError, 'Sendfail {}'.format(tx_hex_string(tx_hex, self.chain_spec.chain_id())))
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def handle_invalid_encoding(self, tx_hash_hex, tx_hex):
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tx_bytes = bytes.fromhex(tx_hex[2:])
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tx = unpack_signed_raw_tx(tx_bytes, self.chain_spec.chain_id())
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s_lock = celery.signature(
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'cic_eth.admin.ctrl.lock_send',
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[
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tx_hash_hex,
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self.chain_str,
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tx['from'],
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tx_hash_hex,
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],
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queue=self.queue,
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)
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s_set_reject = celery.signature(
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'cic_eth.queue.tx.set_rejected',
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[],
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queue=self.queue,
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)
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nonce_txs = get_nonce_tx(tx['nonce'], tx['from'], self.chain_spec.chain_id())
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attempts = len(nonce_txs)
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if attempts < MAX_NONCE_ATTEMPTS:
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logg.debug('nonce {} address {} retries {} < {}'.format(tx['nonce'], tx['from'], attempts, MAX_NONCE_ATTEMPTS))
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s_resend = celery.signature(
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'cic_eth.eth.tx.resend_with_higher_gas',
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[
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self.chain_str,
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None,
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1.01,
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],
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queue=self.queue,
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)
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s_unlock = celery.signature(
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'cic_eth.admin.ctrl.unlock_send',
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[
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self.chain_str,
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tx['from'],
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],
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queue=self.queue,
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)
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s_resend.link(s_unlock)
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s_set_reject.link(s_resend)
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s_lock.link(s_set_reject)
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t = s_lock.apply_async()
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return (t, PermanentTxError, 'Reject invalid encoding {}'.format(tx_hex_string(tx_hex, self.chain_spec.chain_id())))
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def handle_invalid_parameters(self, tx_hash_hex, tx_hex):
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s_sync = celery.signature(
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'cic_eth.eth.tx.sync_tx',
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[
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tx_hash_hex,
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self.chain_str,
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],
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queue=self.queue,
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)
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t = s_sync.apply_async()
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return (t, PermanentTxError, 'Reject invalid parameters {}'.format(tx_hex_string(tx_hex, self.chain_spec.chain_id())))
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def handle_invalid(self, tx_hash_hex, tx_hex):
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tx_bytes = bytes.fromhex(tx_hex[2:])
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tx = unpack_signed_raw_tx(tx_bytes, self.chain_spec.chain_id())
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s_lock = celery.signature(
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'cic_eth.admin.ctrl.lock_send',
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[
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tx_hash_hex,
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self.chain_str,
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tx['from'],
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tx_hash_hex,
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],
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queue=self.queue,
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)
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s_set_reject = celery.signature(
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'cic_eth.queue.tx.set_rejected',
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[],
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queue=self.queue,
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)
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s_lock.link(s_set_reject)
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t = s_lock.apply_async()
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return (t, PermanentTxError, 'Reject invalid {}'.format(tx_hex_string(tx_hex, self.chain_spec.chain_id())))
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def handle_default(self, tx_hash_hex, tx_hex):
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tx_bytes = bytes.fromhex(tx_hex[2:])
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tx = unpack_signed_raw_tx(tx_bytes, self.chain_spec.chain_id())
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s_lock = celery.signature(
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'cic_eth.admin.ctrl.lock_send',
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[
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tx_hash_hex,
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self.chain_str,
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tx['from'],
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tx_hash_hex,
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],
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queue=self.queue,
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)
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s_set_fubar = celery.signature(
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'cic_eth.queue.tx.set_fubar',
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[],
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queue=self.queue,
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)
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s_lock.link(s_set_fubar)
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t = s_lock.apply_async()
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return (t, PermanentTxError, 'Fubar {}'.format(tx_hex_string(tx_hex, self.chain_spec.chain_id())))
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@celery_app.task(bind=True)
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def send(self, txs, chain_str):
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"""Send transactions to the network.
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If more than one transaction is passed to the task, it will spawn a new send task with the remaining transaction(s) after the first in the list has been processed.
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Updates the outgoing transaction queue entry to SENT on successful send.
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If a temporary error occurs, the queue entry is set to SENDFAIL.
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If a permanent error occurs due to invalid transaction data, queue entry value is set to REJECTED.
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Any other permanent error that isn't explicitly handled will get value FUBAR.
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:param txs: Signed raw transaction data
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:type txs: list of str, 0x-hex
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:param chain_str: Chain spec, string representation
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:type chain_str: str
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:raises TemporaryTxError: If unable to connect to node
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:raises PermanentTxError: If EVM execution fails immediately due to tx input, or if tx contents are invalid.
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:return: transaction hash of sent transaction
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:rtype: str, 0x-hex
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"""
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if len(txs) == 0:
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raise ValueError('no transaction to send')
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chain_spec = ChainSpec.from_chain_str(chain_str)
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tx_hex = txs[0]
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logg.debug('send transaction {}'.format(tx_hex))
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tx_hash = web3.Web3.keccak(hexstr=tx_hex)
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tx_hash_hex = tx_hash.hex()
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queue = self.request.delivery_info.get('routing_key', None)
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c = RpcClient(chain_spec)
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r = None
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try:
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r = c.w3.eth.send_raw_transaction(tx_hex)
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except Exception as e:
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raiser = ParityNodeHandler(chain_spec, queue)
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(t, e, m) = raiser.handle(e, tx_hash_hex, tx_hex)
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raise e(m)
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s_set_sent = celery.signature(
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'cic_eth.queue.tx.set_sent_status',
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[
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tx_hash_hex,
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False
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],
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queue=queue,
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)
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s_set_sent.apply_async()
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tx_tail = txs[1:]
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if len(tx_tail) > 0:
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s = celery.signature(
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'cic_eth.eth.tx.send',
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[tx_tail],
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queue=queue,
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)
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s.apply_async()
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return r.hex()
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@celery_app.task(bind=True, throws=(AlreadyFillingGasError))
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def refill_gas(self, recipient_address, chain_str):
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"""Executes a native token transaction to fund the recipient's gas expenditures.
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:param recipient_address: Recipient in need of gas
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:type recipient_address: str, 0x-hex
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:param chain_str: Chain spec, string representation
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:type chain_str: str
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:raises AlreadyFillingGasError: A gas refill transaction for this address is already executing
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:returns: Transaction hash.
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:rtype: str, 0x-hex
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"""
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chain_spec = ChainSpec.from_chain_str(chain_str)
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session = SessionBase.create_session()
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status_filter = StatusBits.FINAL | StatusBits.NODE_ERROR | StatusBits.NETWORK_ERROR | StatusBits.UNKNOWN_ERROR
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q = session.query(Otx.tx_hash)
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q = q.join(TxCache)
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q = q.filter(Otx.status.op('&')(StatusBits.FINAL.value)==0)
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q = q.filter(TxCache.from_value!='0x00')
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q = q.filter(TxCache.recipient==recipient_address)
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c = q.count()
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session.close()
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if c > 0:
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raise AlreadyFillingGasError(recipient_address)
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queue = self.request.delivery_info['routing_key']
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c = RpcClient(chain_spec)
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clogg = celery_app.log.get_default_logger()
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logg.debug('refill gas from provider address {}'.format(c.gas_provider()))
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default_nonce = c.w3.eth.getTransactionCount(c.gas_provider(), 'pending')
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nonce_generator = NonceOracle(c.gas_provider(), default_nonce)
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nonce = nonce_generator.next()
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gas_price = c.gas_price()
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gas_limit = c.default_gas_limit
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refill_amount = c.refill_amount()
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logg.debug('tx send gas price {} nonce {}'.format(gas_price, nonce))
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# create and sign transaction
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tx_send_gas = {
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'from': c.gas_provider(),
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'to': recipient_address,
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'gas': gas_limit,
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'gasPrice': gas_price,
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'chainId': chain_spec.chain_id(),
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'nonce': nonce,
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'value': refill_amount,
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'data': '',
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}
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tx_send_gas_signed = c.w3.eth.sign_transaction(tx_send_gas)
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tx_hash = web3.Web3.keccak(hexstr=tx_send_gas_signed['raw'])
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tx_hash_hex = tx_hash.hex()
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# TODO: route this through sign_and_register_tx instead
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logg.debug('adding queue refill gas tx {}'.format(tx_hash_hex))
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queue_create(
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nonce,
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c.gas_provider(),
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tx_hash_hex,
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tx_send_gas_signed['raw'],
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chain_str,
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)
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s_tx_cache = celery.signature(
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'cic_eth.eth.tx.cache_gas_refill_data',
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[
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tx_hash_hex,
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tx_send_gas,
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],
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queue=queue,
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)
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s_status = celery.signature(
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'cic_eth.queue.tx.set_ready',
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[
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tx_hash_hex,
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],
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queue=queue,
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)
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celery.group(s_tx_cache, s_status)()
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return tx_send_gas_signed['raw']
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@celery_app.task(bind=True)
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def resend_with_higher_gas(self, txold_hash_hex, chain_str, gas=None, default_factor=1.1):
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"""Create a new transaction from an existing one with same nonce and higher gas price.
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:param txold_hash_hex: Transaction to re-create
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:type txold_hash_hex: str, 0x-hex
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:param chain_str: Chain spec, string representation
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:type chain_str: str
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:param gas: Explicitly use the specified gas amount
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:type gas: number
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:param default_factor: Default factor by which to increment the gas price by
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:type default_factor: float
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:raises NotLocalTxError: Transaction does not exist in the local queue
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:returns: Transaction hash
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:rtype: str, 0x-hex
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"""
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session = SessionBase.create_session()
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q = session.query(Otx)
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q = q.filter(Otx.tx_hash==txold_hash_hex)
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otx = q.first()
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session.close()
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if otx == None:
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raise NotLocalTxError(txold_hash_hex)
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chain_spec = ChainSpec.from_chain_str(chain_str)
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c = RpcClient(chain_spec)
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|
||
tx_signed_raw_bytes = bytes.fromhex(otx.signed_tx[2:])
|
||
tx = unpack_signed_raw_tx(tx_signed_raw_bytes, chain_spec.chain_id())
|
||
logg.debug('resend otx {} {}'.format(tx, otx.signed_tx))
|
||
|
||
queue = self.request.delivery_info['routing_key']
|
||
|
||
logg.debug('before {}'.format(tx))
|
||
if gas != None:
|
||
tx['gasPrice'] = gas
|
||
else:
|
||
gas_price = c.gas_price()
|
||
if tx['gasPrice'] > gas_price:
|
||
logg.info('Network gas price {} is lower than overdue tx gas price {}'.format(gas_price, tx['gasPrice']))
|
||
#tx['gasPrice'] = int(tx['gasPrice'] * default_factor)
|
||
tx['gasPrice'] += 1
|
||
else:
|
||
new_gas_price = int(tx['gasPrice'] * default_factor)
|
||
if gas_price > new_gas_price:
|
||
tx['gasPrice'] = gas_price
|
||
else:
|
||
tx['gasPrice'] = new_gas_price
|
||
|
||
(tx_hash_hex, tx_signed_raw_hex) = sign_tx(tx, chain_str)
|
||
queue_create(
|
||
tx['nonce'],
|
||
tx['from'],
|
||
tx_hash_hex,
|
||
tx_signed_raw_hex,
|
||
chain_str,
|
||
)
|
||
TxCache.clone(txold_hash_hex, tx_hash_hex)
|
||
|
||
s = create_check_gas_and_send_task(
|
||
[tx_signed_raw_hex],
|
||
chain_str,
|
||
tx['from'],
|
||
tx['gasPrice'] * tx['gas'],
|
||
[tx_hash_hex],
|
||
queue=queue,
|
||
)
|
||
s.apply_async()
|
||
|
||
return tx_hash_hex
|
||
|
||
|
||
@celery_app.task(bind=True, throws=(web3.exceptions.TransactionNotFound,))
|
||
def sync_tx(self, tx_hash_hex, chain_str):
|
||
|
||
queue = self.request.delivery_info['routing_key']
|
||
|
||
chain_spec = ChainSpec.from_chain_str(chain_str)
|
||
c = RpcClient(chain_spec)
|
||
|
||
tx = c.w3.eth.getTransaction(tx_hash_hex)
|
||
rcpt = None
|
||
try:
|
||
rcpt = c.w3.eth.getTransactionReceipt(tx_hash_hex)
|
||
except web3.exceptions.TransactionNotFound as e:
|
||
pass
|
||
|
||
if rcpt != None:
|
||
success = rcpt['status'] == 1
|
||
logg.debug('sync tx {} mined block {} success {}'.format(tx_hash_hex, rcpt['blockNumber'], success))
|
||
|
||
s = celery.signature(
|
||
'cic_eth.queue.tx.set_final_status',
|
||
[
|
||
tx_hash_hex,
|
||
rcpt['blockNumber'],
|
||
not success,
|
||
],
|
||
queue=queue,
|
||
)
|
||
else:
|
||
logg.debug('sync tx {} mempool'.format(tx_hash_hex))
|
||
|
||
s = celery.signature(
|
||
'cic_eth.queue.tx.set_sent_status',
|
||
[
|
||
tx_hash_hex,
|
||
],
|
||
queue=queue,
|
||
)
|
||
|
||
s.apply_async()
|
||
|
||
|
||
|
||
@celery_app.task(bind=True)
|
||
def resume_tx(self, txpending_hash_hex, chain_str):
|
||
"""Queue a suspended tranaction for (re)sending
|
||
|
||
:param txpending_hash_hex: Transaction hash
|
||
:type txpending_hash_hex: str, 0x-hex
|
||
:param chain_str: Chain spec, string representation
|
||
:type chain_str: str
|
||
:raises NotLocalTxError: Transaction does not exist in the local queue
|
||
:returns: Transaction hash
|
||
:rtype: str, 0x-hex
|
||
"""
|
||
|
||
chain_spec = ChainSpec.from_chain_str(chain_str)
|
||
|
||
session = SessionBase.create_session()
|
||
q = session.query(Otx.signed_tx)
|
||
q = q.filter(Otx.tx_hash==txpending_hash_hex)
|
||
r = q.first()
|
||
session.close()
|
||
if r == None:
|
||
raise NotLocalTxError(txpending_hash_hex)
|
||
|
||
tx_signed_raw_hex = r[0]
|
||
tx_signed_bytes = bytes.fromhex(tx_signed_raw_hex[2:])
|
||
tx = unpack_signed_raw_tx(tx_signed_bytes, chain_spec.chain_id())
|
||
|
||
queue = self.request.delivery_info['routing_key']
|
||
|
||
s = create_check_gas_and_send_task(
|
||
[tx_signed_raw_hex],
|
||
chain_str,
|
||
tx['from'],
|
||
tx['gasPrice'] * tx['gas'],
|
||
[txpending_hash_hex],
|
||
queue=queue,
|
||
)
|
||
s.apply_async()
|
||
return txpending_hash_hex
|
||
|
||
|
||
@celery_app.task()
|
||
def otx_cache_parse_tx(
|
||
tx_hash_hex,
|
||
tx_signed_raw_hex,
|
||
chain_str,
|
||
):
|
||
"""Generates and commits transaction cache metadata for a gas refill 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_chain_str(chain_str)
|
||
c = RpcClient(chain_spec)
|
||
tx_signed_raw_bytes = bytes.fromhex(tx_signed_raw_hex[2:])
|
||
tx = unpack_signed_raw_tx(tx_signed_raw_bytes, chain_spec.chain_id())
|
||
(txc, cache_id) = cache_gas_refill_data(tx_hash_hex, tx)
|
||
return txc
|
||
|
||
|
||
@celery_app.task()
|
||
def cache_gas_refill_data(
|
||
tx_hash_hex,
|
||
tx,
|
||
):
|
||
"""Helper function for otx_cache_parse_tx
|
||
|
||
:param tx_hash_hex: Transaction hash
|
||
:type tx_hash_hex: str, 0x-hex
|
||
:param tx: Signed raw transaction
|
||
:type tx: str, 0x-hex
|
||
:returns: Transaction hash and id of cache element in storage backend, respectively
|
||
:rtype: tuple
|
||
"""
|
||
tx_cache = TxCache(
|
||
tx_hash_hex,
|
||
tx['from'],
|
||
tx['to'],
|
||
zero_address,
|
||
zero_address,
|
||
tx['value'],
|
||
tx['value'],
|
||
)
|
||
|
||
session = SessionBase.create_session()
|
||
session.add(tx_cache)
|
||
session.commit()
|
||
cache_id = tx_cache.id
|
||
session.close()
|
||
return (tx_hash_hex, cache_id)
|