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