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cic-internal-integration/apps/cic-cache/cic_cache/runnable/tracker.py

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Add database commit of erc20 transfers
2021-04-01 09:30:41 +02:00
# standard imports
import sys
import os
import argparse
import logging
import time
import enum
import re
# third-party imports
import confini
from cic_registry import CICRegistry
from cic_registry.chain import (
ChainRegistry,
ChainSpec,
)
#from cic_registry.bancor import BancorRegistryClient
from cic_registry.token import Token
from cic_registry.error import (
UnknownContractError,
UnknownDeclarationError,
)
from cic_registry.declaration import to_token_declaration
from web3.exceptions import BlockNotFound, TransactionNotFound
from websockets.exceptions import ConnectionClosedError
from requests.exceptions import ConnectionError
import web3
from web3 import HTTPProvider, WebsocketProvider
# local imports
from cic_cache import db
from cic_cache.db.models.base import SessionBase
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()
logging.getLogger('websockets.protocol').setLevel(logging.CRITICAL)
logging.getLogger('urllib3').setLevel(logging.CRITICAL)
logging.getLogger('web3.RequestManager').setLevel(logging.CRITICAL)
logging.getLogger('web3.providers.WebsocketProvider').setLevel(logging.CRITICAL)
logging.getLogger('web3.providers.HTTPProvider').setLevel(logging.CRITICAL)
log_topics = {
'transfer': '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef',
'convert': '0x7154b38b5dd31bb3122436a96d4e09aba5b323ae1fd580025fab55074334c095',
'accountregistry_add': '0a3b0a4f4c6e53dce3dbcad5614cb2ba3a0fa7326d03c5d64b4fa2d565492737',
}
config_dir = os.path.join('/usr/local/etc/cic-cache')
argparser = argparse.ArgumentParser(description='daemon that monitors transactions in new blocks')
argparser.add_argument('-c', type=str, default=config_dir, help='config root to use')
argparser.add_argument('-i', '--chain-spec', type=str, dest='i', help='chain spec')
argparser.add_argument('--trust-address', default=[], type=str, dest='trust_address', action='append', help='Set address as trust')
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')
argparser.add_argument('--abi-dir', dest='abi_dir', type=str, help='Directory containing bytecode and abi')
argparser.add_argument('-v', help='be verbose', action='store_true')
argparser.add_argument('-vv', help='be more verbose', action='store_true')
args = argparser.parse_args(sys.argv[1:])
config_dir = os.path.join(args.c)
os.makedirs(config_dir, 0o777, True)
if args.v == True:
logging.getLogger().setLevel(logging.INFO)
elif args.vv == True:
logging.getLogger().setLevel(logging.DEBUG)
config = confini.Config(config_dir, args.env_prefix)
config.process()
args_override = {
'ETH_ABI_DIR': getattr(args, 'abi_dir'),
'CIC_TRUST_ADDRESS': ",".join(getattr(args, 'trust_address', [])),
}
config.dict_override(args_override, 'cli flag')
config.censor('PASSWORD', 'DATABASE')
config.censor('PASSWORD', 'SSL')
logg.debug('config loaded from {}:\n{}'.format(config_dir, config))
# connect to database
dsn = db.dsn_from_config(config)
SessionBase.connect(dsn)
re_websocket = re.compile('^wss?://')
re_http = re.compile('^https?://')
blockchain_provider = config.get('ETH_PROVIDER')
if re.match(re_websocket, blockchain_provider) != None:
blockchain_provider = WebsocketProvider(blockchain_provider)
elif re.match(re_http, blockchain_provider) != None:
blockchain_provider = HTTPProvider(blockchain_provider)
else:
raise ValueError('unknown provider url {}'.format(blockchain_provider))
def web3_constructor():
w3 = web3.Web3(blockchain_provider)
return (blockchain_provider, w3)
class RunStateEnum(enum.IntEnum):
INIT = 0
RUN = 1
TERMINATE = 9
def rubberstamp(src):
return True
class Tracker:
def __init__(self, chain_spec, trusts=[]):
self.block_height = 0
self.tx_height = 0
self.state = RunStateEnum.INIT
self.declarator_cache = {}
self.convert_enabled = False
self.trusts = trusts
self.chain_spec = chain_spec
self.declarator = CICRegistry.get_contract(chain_spec, 'AddressDeclarator', 'Declarator')
def __process_tx(self, w3, session, t, r, l, b):
token_value = int(l.data, 16)
token_sender = l.topics[1][-20:].hex()
token_recipient = l.topics[2][-20:].hex()
#ts = ContractRegistry.get_address(t.address)
ts = CICRegistry.get_address(self.chain_spec, t.address())
logg.info('add token transfer {} value {} from {} to {}'.format(
ts.symbol(),
token_value,
token_sender,
token_recipient,
)
)
db.add_transaction(
session,
r.transactionHash.hex(),
r.blockNumber,
r.transactionIndex,
w3.toChecksumAddress(token_sender),
w3.toChecksumAddress(token_recipient),
t.address(),
t.address(),
token_value,
token_value,
r.status == 1,
b.timestamp,
)
session.flush()
# TODO: simplify/ split up and/or comment, function is too long
def __process_convert(self, w3, session, t, r, l, b):
logg.warning('conversions are deactivated')
return
# token_source = l.topics[2][-20:].hex()
# token_source = w3.toChecksumAddress(token_source)
# token_destination = l.topics[3][-20:].hex()
# token_destination = w3.toChecksumAddress(token_destination)
# data_noox = l.data[2:]
# d = data_noox[:64]
# token_from_value = int(d, 16)
# d = data_noox[64:128]
# token_to_value = int(d, 16)
# token_trader = '0x' + data_noox[192-40:]
#
# #ts = ContractRegistry.get_address(token_source)
# ts = CICRegistry.get_address(CICRegistry.bancor_chain_spec, t.address())
# #if ts == None:
# # ts = ContractRegistry.reserves[token_source]
# td = ContractRegistry.get_address(token_destination)
# #if td == None:
# # td = ContractRegistry.reserves[token_source]
# logg.info('add token convert {} -> {} value {} -> {} trader {}'.format(
# ts.symbol(),
# td.symbol(),
# token_from_value,
# token_to_value,
# token_trader,
# )
# )
#
# db.add_transaction(
# session,
# r.transactionHash.hex(),
# r.blockNumber,
# r.transactionIndex,
# w3.toChecksumAddress(token_trader),
# w3.toChecksumAddress(token_trader),
# token_source,
# token_destination,
# r.status == 1,
# b.timestamp,
# )
# session.flush()
def check_token(self, address):
t = None
try:
t = CICRegistry.get_address(CICRegistry.default_chain_spec, address)
return t
except UnknownContractError:
logg.debug('contract {} not in registry'.format(address))
# If nothing was returned, we look up the token in the declarator
for trust in self.trusts:
logg.debug('look up declaration for contract {} with trust {}'.format(address, trust))
fn = self.declarator.function('declaration')
# TODO: cache trust in LRUcache
declaration_array = fn(trust, address).call()
try:
declaration = to_token_declaration(trust, address, declaration_array, [rubberstamp])
logg.debug('found declaration for token {} from trust address {}'.format(address, trust))
except UnknownDeclarationError:
continue
try:
c = w3.eth.contract(abi=CICRegistry.abi('ERC20'), address=address)
t = CICRegistry.add_token(self.chain_spec, c)
break
except ValueError:
logg.error('declaration for {} validates as token, but location is not ERC20 compatible'.format(address))
return t
# TODO use input data instead of logs
def process(self, w3, session, block):
#self.refresh_registry(w3)
tx_count = w3.eth.getBlockTransactionCount(block.hash)
b = w3.eth.getBlock(block.hash)
for i in range(self.tx_height, tx_count):
tx = w3.eth.getTransactionByBlock(block.hash, i)
if tx.to == None:
logg.debug('block {} tx {} is contract creation tx, skipping'.format(block.number, i))
continue
if len(w3.eth.getCode(tx.to)) == 0:
logg.debug('block {} tx {} not a contract tx, skipping'.format(block.number, i))
continue
t = self.check_token(tx.to)
if t != None and isinstance(t, Token):
r = w3.eth.getTransactionReceipt(tx.hash)
for l in r.logs:
logg.debug('block {} tx {} {} token log {} {}'.format(block.number, i, tx.hash.hex(), l.logIndex, l.topics[0].hex()))
if l.topics[0].hex() == log_topics['transfer']:
self.__process_tx(w3, session, t, r, l, b)
# TODO: cache contracts in LRUcache
elif self.convert_enabled and tx.to == CICRegistry.get_contract(CICRegistry.default_chain_spec, 'Converter').address:
r = w3.eth.getTransactionReceipt(tx.hash)
for l in r.logs:
logg.info('block {} tx {} {} bancornetwork log {} {}'.format(block.number, i, tx.hash.hex(), l.logIndex, l.topics[0].hex()))
if l.topics[0].hex() == log_topics['convert']:
self.__process_convert(w3, session, t, r, l, b)
session.execute("UPDATE tx_sync SET tx = '{}'".format(tx.hash.hex()))
session.commit()
self.tx_height += 1
def __get_next_retry(self, backoff=False):
return 1
def loop(self):
logg.info('starting at block {} tx index {}'.format(self.block_height, self.tx_height))
self.state = RunStateEnum.RUN
while self.state == RunStateEnum.RUN:
(provider, w3) = web3_constructor()
session = SessionBase.create_session()
try:
block = w3.eth.getBlock(self.block_height)
self.process(w3, session, block)
self.block_height += 1
self.tx_height = 0
except BlockNotFound as e:
logg.debug('no block {} yet, zZzZ...'.format(self.block_height))
time.sleep(self.__get_next_retry())
except ConnectionClosedError as e:
logg.info('connection gone, retrying')
time.sleep(self.__get_next_retry(True))
except OSError as e:
logg.error('cannot connect {}'.format(e))
time.sleep(self.__get_next_retry(True))
except Exception as e:
session.close()
raise(e)
session.close()
def load(self, w3):
session = SessionBase.create_session()
r = session.execute('SELECT tx FROM tx_sync').first()
if r != None:
if r[0] == '0x{0:0{1}X}'.format(0, 64):
logg.debug('last tx was zero-address, starting from scratch')
return
t = w3.eth.getTransaction(r[0])
self.block_height = t.blockNumber
self.tx_height = t.transactionIndex+1
c = w3.eth.getBlockTransactionCount(t.blockHash.hex())
logg.debug('last tx processed {} index {} (max index {})'.format(t.blockNumber, t.transactionIndex, c-1))
if c == self.tx_height:
self.block_height += 1
self.tx_height = 0
session.close()
(provider, w3) = web3_constructor()
trust = config.get('CIC_TRUST_ADDRESS', "").split(",")
chain_spec = args.i
try:
w3.eth.chainId
except Exception as e:
logg.exception(e)
sys.stderr.write('cannot connect to evm node\n')
sys.exit(1)
def main():
chain_spec = ChainSpec.from_chain_str(config.get('CIC_CHAIN_SPEC'))
CICRegistry.init(w3, config.get('CIC_REGISTRY_ADDRESS'), chain_spec)
CICRegistry.add_path(config.get('ETH_ABI_DIR'))
chain_registry = ChainRegistry(chain_spec)
CICRegistry.add_chain_registry(chain_registry)
t = Tracker(chain_spec, trust)
t.load(w3)
t.loop()
if __name__ == '__main__':
main()
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