411 lines
16 KiB
Python
411 lines
16 KiB
Python
# standard imports
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import os
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import sys
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import logging
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import time
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import argparse
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import sys
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import re
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# third-party imports
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import confini
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import celery
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import rlp
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import web3
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from web3 import HTTPProvider, WebsocketProvider
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from cic_registry import CICRegistry
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from cic_registry.chain import ChainSpec
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from cic_registry import zero_address
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from cic_registry.chain import ChainRegistry
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from cic_registry.error import UnknownContractError
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from cic_bancor.bancor import BancorRegistryClient
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# local imports
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import cic_eth
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from cic_eth.eth import RpcClient
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from cic_eth.db import SessionBase
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from cic_eth.db import Otx
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from cic_eth.db import TxConvertTransfer
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from cic_eth.db.models.tx import TxCache
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from cic_eth.db.enum import StatusEnum
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from cic_eth.db import dsn_from_config
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from cic_eth.queue.tx import get_paused_txs
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from cic_eth.sync import Syncer
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from cic_eth.sync.error import LoopDone
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from cic_eth.db.error import UnknownConvertError
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from cic_eth.eth.util import unpack_signed_raw_tx
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from cic_eth.eth.task import create_check_gas_and_send_task
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from cic_eth.sync.backend import SyncerBackend
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from cic_eth.eth.token import unpack_transfer
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from cic_eth.eth.token import unpack_transferfrom
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from cic_eth.eth.account import unpack_gift
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logging.basicConfig(level=logging.WARNING)
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logg = logging.getLogger()
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logging.getLogger('websockets.protocol').setLevel(logging.CRITICAL)
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logging.getLogger('web3.RequestManager').setLevel(logging.CRITICAL)
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logging.getLogger('web3.providers.WebsocketProvider').setLevel(logging.CRITICAL)
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logging.getLogger('web3.providers.HTTPProvider').setLevel(logging.CRITICAL)
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config_dir = os.path.join('/usr/local/etc/cic-eth')
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argparser = argparse.ArgumentParser(description='daemon that monitors transactions in new blocks')
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argparser.add_argument('-c', type=str, default=config_dir, help='config root to use')
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argparser.add_argument('-i', '--chain-spec', type=str, dest='i', help='chain spec')
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argparser.add_argument('--abi-dir', dest='abi_dir', type=str, help='Directory containing bytecode and abi')
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argparser.add_argument('--env-prefix', default=os.environ.get('CONFINI_ENV_PREFIX'), dest='env_prefix', type=str, help='environment prefix for variables to overwrite configuration')
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argparser.add_argument('-q', type=str, default='cic-eth', help='celery queue to submit transaction tasks to')
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argparser.add_argument('-v', help='be verbose', action='store_true')
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argparser.add_argument('-vv', help='be more verbose', action='store_true')
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argparser.add_argument('mode', type=str, help='sync mode: (head|history)', default='head')
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args = argparser.parse_args(sys.argv[1:])
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if args.v == True:
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logging.getLogger().setLevel(logging.INFO)
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elif args.vv == True:
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logging.getLogger().setLevel(logging.DEBUG)
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config_dir = os.path.join(args.c)
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os.makedirs(config_dir, 0o777, True)
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config = confini.Config(config_dir, args.env_prefix)
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config.process()
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# override args
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args_override = {
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'ETH_ABI_DIR': getattr(args, 'abi_dir'),
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'CIC_CHAIN_SPEC': getattr(args, 'i'),
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}
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config.dict_override(args_override, 'cli flag')
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config.censor('PASSWORD', 'DATABASE')
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config.censor('PASSWORD', 'SSL')
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logg.debug('config loaded from {}:\n{}'.format(config_dir, config))
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app = celery.Celery(backend=config.get('CELERY_RESULT_URL'), broker=config.get('CELERY_BROKER_URL'))
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queue = args.q
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dsn = dsn_from_config(config)
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SessionBase.connect(dsn)
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# TODO: There is too much code in this file, split it up
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transfer_callbacks = []
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for cb in config.get('TASKS_TRANSFER_CALLBACKS', '').split(','):
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task_split = cb.split(':')
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task_queue = queue
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if len(task_split) > 1:
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task_queue = task_split[0]
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task_pair = (task_split[1], task_queue)
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transfer_callbacks.append(task_pair)
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# TODO: move to contract registry
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__convert_log_hash = '0x7154b38b5dd31bb3122436a96d4e09aba5b323ae1fd580025fab55074334c095' # keccak256(Conversion(address,address,address,uint256,uint256,address)
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__account_registry_add_log_hash = '0x5ed3bdd47b9af629827a8d129aa39c870b10c03f0153fe9ddb8e84b665061acd' # keccak256(AccountAdded(address,uint256))
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__transfer_method_signature = '0xa9059cbb' # keccak256(transfer(address,uint256))
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__transferfrom_method_signature = '0x23b872dd' # keccak256(transferFrom(address,address,uint256))
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__giveto_method_signature = '0x63e4bff4' # keccak256(giveTo(address))
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# TODO: move to bancor package
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def parse_convert_log(w3, entry):
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data = entry.data[2:]
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from_amount = int(data[:64], 16)
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to_amount = int(data[64:128], 16)
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holder_address_hex_raw = '0x' + data[-40:]
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holder_address_hex = w3.toChecksumAddress(holder_address_hex_raw)
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o = {
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'from_amount': from_amount,
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'to_amount': to_amount,
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'holder_address': holder_address_hex
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}
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logg.debug('parsed convert log {}'.format(o))
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return o
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def registration_filter(w3, tx, rcpt, chain_spec):
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registered_address = None
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for l in rcpt['logs']:
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event_topic_hex = l['topics'][0].hex()
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if event_topic_hex == __account_registry_add_log_hash:
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address_bytes = l.topics[1][32-20:]
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address = web3.Web3.toChecksumAddress(address_bytes.hex())
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logg.debug('request token gift to {}'.format(address))
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s = celery.signature(
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'cic_eth.eth.account.gift',
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[
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address,
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str(chain_spec),
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],
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queue=queue,
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)
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s.apply_async()
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def convert_filter(w3, tx, rcpt, chain_spec):
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destination_token_address = None
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recipient_address = None
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amount = 0
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for l in rcpt['logs']:
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event_topic_hex = l['topics'][0].hex()
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if event_topic_hex == __convert_log_hash:
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tx_hash_hex = tx['hash'].hex()
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try:
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convert_transfer = TxConvertTransfer.get(tx_hash_hex)
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except UnknownConvertError:
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logg.warning('skipping unknown convert tx {}'.format(tx_hash_hex))
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continue
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if convert_transfer.transfer_tx_hash != None:
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logg.warning('convert tx {} cache record already has transfer hash {}, skipping'.format(tx_hash_hex, convert_transfer.transfer_hash))
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continue
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recipient_address = convert_transfer.recipient_address
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logg.debug('found convert event {} recipient'.format(tx_hash_hex, recipient_address))
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r = parse_convert_log(l)
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destination_token_address = l['topics'][3][-20:]
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if destination_token_address == zero_address or destination_token_address == None:
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return None
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destination_token_address_hex = destination_token_address.hex()
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s = celery.signature(
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'cic_eth.eth.bancor.transfer_converted',
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[
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[{
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'address': w3.toChecksumAddress(destination_token_address_hex),
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}],
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r['holder_address'],
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recipient_address,
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r['to_amount'],
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tx_hash_hex,
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str(chain_spec),
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],
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queue=queue,
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)
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logg.info('sending tx signature {}'.format(s))
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t = s.apply_async()
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logg.debug('submitted transfer after convert task uuid {} {}'.format(t, t.successful()))
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return t
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def tx_filter(w3, tx, rcpt, chain_spec):
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tx_hash_hex = tx.hash.hex()
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otx = Otx.load(tx_hash_hex)
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if otx == None:
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logg.debug('tx {} not found locally, skipping'.format(tx_hash_hex))
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return None
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logg.info('otx found {}'.format(otx.tx_hash))
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s = celery.signature(
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'cic_eth.queue.tx.set_final_status',
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[
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tx_hash_hex,
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rcpt.blockNumber,
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rcpt.status == 0,
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],
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queue=queue,
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)
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t = s.apply_async()
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return t
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# TODO: replace with registry call instead
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def get_token_symbol(w3, address):
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#token = CICRegistry.get_address(CICRegistry.chain_spec, tx['to'])
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logg.warning('token verification missing')
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c = w3.eth.contract(abi=CICRegistry.abi('ERC20'), address=address)
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return c.functions.symbol().call()
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# TODO: replace with registry call instead
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def get_token_decimals(w3, address):
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#token = CICRegistry.get_address(CICRegistry.chain_spec, tx['to'])
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logg.warning('token verification missing')
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c = w3.eth.contract(abi=CICRegistry.abi('ERC20'), address=address)
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return c.functions.decimals().call()
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def callbacks_filter(w3, tx, rcpt, chain_spec):
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transfer_data = None
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if len(tx.input) < 10:
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logg.debug('callbacks filter data length not sufficient for method signature in tx {}, skipping'.format(tx['hash']))
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return
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logg.debug('checking callbacks filter input {}'.format(tx.input[:10]))
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transfer_type = 'transfer'
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method_signature = tx.input[:10]
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if method_signature == __transfer_method_signature:
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transfer_data = unpack_transfer(tx.input)
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transfer_data['from'] = tx['from']
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transfer_data['token_address'] = tx['to']
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elif method_signature == __transferfrom_method_signature:
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transfer_type = 'transferfrom'
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transfer_data = unpack_transferfrom(tx.input)
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transfer_data['token_address'] = tx['to']
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elif method_signature == __giveto_method_signature:
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transfer_type = 'tokengift'
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transfer_data = unpack_gift(tx.input)
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for l in rcpt.logs:
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if l.topics[0].hex() == '0x45c201a59ac545000ead84f30b2db67da23353aa1d58ac522c48505412143ffa':
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transfer_data['amount'] = web3.Web3.toInt(hexstr=l.data)
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token_address_bytes = l.topics[2][32-20:]
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transfer_data['token_address'] = web3.Web3.toChecksumAddress(token_address_bytes.hex())
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transfer_data['from'] = rcpt.to
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if transfer_data != None:
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for tc in transfer_callbacks:
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token_symbol = None
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try:
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logg.debug('checking token {}'.format(transfer_data['token_address']))
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token_symbol = get_token_symbol(w3, transfer_data['token_address'])
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token_decimals = get_token_decimals(w3, transfer_data['token_address'])
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logg.debug('calling transfer callback {}:{} for tx {}'.format(tc[1], tc[0], tx['hash']))
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except UnknownContractError:
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logg.debug('callback filter {}:{} skipping "transfer" method on unknown contract {} tx {}'.format(tc[1], tc[0], transfer_data['to'], tx.hash.hex()))
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continue
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result = {
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'hash': tx.hash.hex(),
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'sender': transfer_data['from'],
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'recipient': transfer_data['to'],
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'source_value': transfer_data['amount'],
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'destination_value': transfer_data['amount'],
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'source_token': transfer_data['token_address'],
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'destination_token': transfer_data['token_address'],
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'source_token_symbol': token_symbol,
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'destination_token_symbol': token_symbol,
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'source_token_decimals': token_decimals,
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'destination_token_decimals': token_decimals,
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'chain': str(chain_spec),
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}
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s = celery.signature(
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tc[0],
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[
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result,
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transfer_type,
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int(rcpt.status == 0),
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],
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queue=tc[1],
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)
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s.apply_async()
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class GasFilter:
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def __init__(self, gas_provider):
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self.gas_provider = gas_provider
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def filter(self, w3, tx, rcpt, chain_str):
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tx_hash_hex = tx.hash.hex()
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if tx['value'] > 0:
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logg.debug('gas refill tx {}'.format(tx_hash_hex))
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session = SessionBase.create_session()
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q = session.query(TxCache.recipient)
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q = q.join(Otx)
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q = q.filter(Otx.tx_hash==tx_hash_hex)
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r = q.first()
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session.close()
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if r == None:
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logg.warning('unsolicited gas refill tx {}'.format(tx_hash_hex))
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return
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chain_spec = ChainSpec.from_chain_str(chain_str)
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txs = get_paused_txs(StatusEnum.WAITFORGAS, r[0], chain_spec.chain_id())
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if len(txs) > 0:
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logg.info('resuming gas-in-waiting txs for {}: {}'.format(r[0], txs.keys()))
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s = create_check_gas_and_send_task(
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list(txs.values()),
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str(chain_str),
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r[0],
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0,
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tx_hashes_hex=list(txs.keys()),
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queue=queue,
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)
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s.apply_async()
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re_websocket = re.compile('^wss?://')
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re_http = re.compile('^https?://')
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blockchain_provider = config.get('ETH_PROVIDER')
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if re.match(re_websocket, blockchain_provider) != None:
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blockchain_provider = WebsocketProvider(blockchain_provider)
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elif re.match(re_http, blockchain_provider) != None:
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blockchain_provider = HTTPProvider(blockchain_provider)
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else:
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raise ValueError('unknown provider url {}'.format(blockchain_provider))
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def web3_constructor():
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w3 = web3.Web3(blockchain_provider)
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return (blockchain_provider, w3)
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RpcClient.set_constructor(web3_constructor)
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def main():
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chain_spec = ChainSpec.from_chain_str(config.get('CIC_CHAIN_SPEC'))
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c = RpcClient(chain_spec)
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CICRegistry.init(c.w3, config.get('CIC_REGISTRY_ADDRESS'), chain_spec)
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CICRegistry.add_path(config.get('ETH_ABI_DIR'))
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chain_registry = ChainRegistry(chain_spec)
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CICRegistry.add_chain_registry(chain_registry)
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if config.get('ETH_ACCOUNT_ACCOUNTS_INDEX_WRITER') != None:
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CICRegistry.add_role(chain_spec, config.get('ETH_ACCOUNT_ACCOUNTS_INDEX_WRITER'), 'AccountRegistry', True)
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syncers = []
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block_offset = c.w3.eth.blockNumber
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chain = str(chain_spec)
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if SyncerBackend.first(chain):
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from cic_eth.sync.history import HistorySyncer
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backend = SyncerBackend.initial(chain, block_offset)
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syncer = HistorySyncer(backend)
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syncers.append(syncer)
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if args.mode == 'head':
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from cic_eth.sync.head import HeadSyncer
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block_sync = SyncerBackend.live(chain, block_offset+1)
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syncers.append(HeadSyncer(block_sync))
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elif args.mode == 'history':
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from cic_eth.sync.history import HistorySyncer
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backends = SyncerBackend.resume(chain, block_offset+1)
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for backend in backends:
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syncers.append(HistorySyncer(backend))
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if len(syncers) == 0:
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logg.info('found no unsynced history. terminating')
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sys.exit(0)
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else:
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sys.stderr.write("unknown mode '{}'\n".format(args.mode))
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sys.exit(1)
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# bancor_registry_contract = CICRegistry.get_contract(chain_spec, 'BancorRegistry', interface='Registry')
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# bancor_chain_registry = CICRegistry.get_chain_registry(chain_spec)
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# bancor_registry = BancorRegistryClient(c.w3, bancor_chain_registry, config.get('ETH_ABI_DIR'))
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# bancor_registry.load()
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i = 0
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for syncer in syncers:
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logg.debug('running syncer index {}'.format(i))
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gas_filter = GasFilter(c.gas_provider()).filter
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syncer.filter.append(gas_filter)
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syncer.filter.append(registration_filter)
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syncer.filter.append(callbacks_filter)
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# TODO: the two following filter functions break the filter loop if return uuid. Pro: less code executed. Con: Possibly unintuitive flow break
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syncer.filter.append(tx_filter)
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syncer.filter.append(convert_filter)
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try:
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syncer.loop(int(config.get('SYNCER_LOOP_INTERVAL')))
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except LoopDone as e:
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sys.stderr.write("sync '{}' done at block {}\n".format(args.mode, e))
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i += 1
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sys.exit(0)
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if __name__ == '__main__':
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main()
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