471 lines
22 KiB
Python
471 lines
22 KiB
Python
import asyncio
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import logging
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from typing import List, Optional
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from sqlalchemy import orm
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from web3 import Web3
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from mev_inspect.fees import fetch_base_fee_per_gas
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from mev_inspect.schemas.blocks import Block
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from mev_inspect.schemas.liquidations import Liquidation
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from mev_inspect.schemas.receipts import Receipt
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from mev_inspect.schemas.swaps import Swap
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from mev_inspect.schemas.traces import Trace, TraceType
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logger = logging.getLogger(__name__)
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async def get_latest_block_number(w3) -> int:
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return await w3.eth.get_block_number()
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async def _get_logs_for_topics(w3, after_block, before_block, topics):
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return await w3.eth.get_logs(
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{
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"fromBlock": hex(after_block),
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"toBlock": hex(before_block),
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"topics": topics,
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}
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)
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def twos_complement(hexstr, bits):
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value = int(hexstr, 16)
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if value & (1 << (bits - 1)):
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value -= 1 << bits
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return value
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def get_swap_v2(data):
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data = data[2:]
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# print(data)
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return (
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int(data[0:64], base=16),
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int(data[64:128], base=16),
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int(data[128:192], base=16),
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int(data[192:256], base=16),
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)
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def get_swap_v3(data):
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data = data[2:]
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# print(data)
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return (
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twos_complement(data[0:64], 256),
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twos_complement(data[64:128], 256),
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int(data[152:192], base=16),
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int(data[224:256], base=16),
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twos_complement(data[314:320], 24),
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)
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def get_swap_synapse(data):
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data = data[2:]
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# print(data)
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return (
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int(data[0:64], base=16),
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int(data[64:128], base=16),
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data[128:192],
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data[192:256],
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)
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def get_liquidation(data):
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data = data[2:]
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# print(data)
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return (
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int(data[0:64], base=16),
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int(data[64:128], base=16),
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"0x" + data[128 + 24 : 168 + 24],
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)
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univ2abi = """
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[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount0","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1","type":"uint256"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"Burn","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount0","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1","type":"uint256"}],"name":"Mint","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount0In","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1In","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount0Out","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"amount1Out","type":"uint256"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"Swap","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint112","name":"reserve0","type":"uint112"},{"indexed":false,"internalType":"uint112","name":"reserve1","type":"uint112"}],"name":"Sync","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MINIMUM_LIQUIDITY","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PERMIT_TYPEHASH","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"burn","outputs":[{"internalType":"uint256","name":"amount0","type":"uint256"},{"internalType":"uint256","name":"amount1","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"factory","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getReserves","outputs":[{"internalType":"uint112","name":"_reserve0","type":"uint112"},{"internalType":"uint112","name":"_reserve1","type":"uint112"},{"internalType":"uint32","name":"_blockTimestampLast","type":"uint32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_token0","type":"address"},{"internalType":"address","name":"_token1","type":"address"}],"name":"initialize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"kLast","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"mint","outputs":[{"internalType":"uint256","name":"liquidity","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"price0CumulativeLast","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"price1CumulativeLast","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"}],"name":"skim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount0Out","type":"uint256"},{"internalType":"uint256","name":"amount1Out","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"swap","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"sync","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token0","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token1","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]
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"""
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def parse_topic(log, index):
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return log["topics"][index].hex()
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def parse_blockNumber(log):
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return log["blockNumber"]
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def parse_transactionHash(log):
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return log["transactionHash"].hex()
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def parse_address(log):
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return log["address"].lower()
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def parse_logIndex(log):
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return log["logIndex"]
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def parse_data(log):
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return log["data"]
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def parse_token(w3, token):
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return "0x" + w3.toHex(token)[26:]
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async def classify_logs(logs, reserves, w3):
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cswaps = []
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cliquidations = []
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new_reserves = []
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topic_swap_v2 = "0xd78ad95fa46c994b6551d0da85fc275fe613ce37657fb8d5e3d130840159d822"
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topic_swap_v3 = "0xc42079f94a6350d7e6235f29174924f928cc2ac818eb64fed8004e115fbcca67"
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topic_swap_synapse = (
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"0xc6c1e0630dbe9130cc068028486c0d118ddcea348550819defd5cb8c257f8a38"
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)
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topic_liquidation = (
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"0xe413a321e8681d831f4dbccbca790d2952b56f977908e45be37335533e005286"
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)
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for log in logs:
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if parse_topic(log, 0) == topic_swap_v2:
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block = parse_blockNumber(log)
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transaction_hash = parse_transactionHash(log)
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pool_address = parse_address(log)
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if pool_address in reserves:
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token0, token1 = reserves[pool_address]
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else:
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addr = Web3.toChecksumAddress(pool_address)
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token0, token1 = await asyncio.gather(
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w3.eth.call({"to": addr, "data": "0x0dfe1681"}),
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w3.eth.call({"to": addr, "data": "0xd21220a7"}),
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)
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token0 = parse_token(w3, token0)
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token1 = parse_token(w3, token1)
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reserves[pool_address] = (token0, token1)
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new_reserves.append(
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{"pool_address": pool_address, "token0": token0, "token1": token1}
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)
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am0in, am1in, am0out, am1out = get_swap_v2(parse_data(log))
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swap = Swap(
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abi_name="uniswap_v2",
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transaction_hash=transaction_hash,
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block_number=block,
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trace_address=[parse_logIndex(log)],
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contract_address=pool_address,
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from_address="0x" + parse_topic(log, 1)[26:],
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to_address="0x" + parse_topic(log, 2)[26:],
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token_in_address=token0 if am0in != 0 else token1, # TODO
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token_in_amount=am0in if am0in != 0 else am1in,
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token_out_address=token1 if am1out != 0 else token0, # TODO
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token_out_amount=am0out if am0out != 0 else am1out,
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protocol=None,
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error=None,
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)
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cswaps.append(swap)
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elif parse_topic(log, 0) == topic_swap_v3:
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block = parse_blockNumber(log)
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transaction_hash = parse_transactionHash(log)
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pool_address = parse_address(log)
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if pool_address in reserves:
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token0, token1 = reserves[pool_address]
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else:
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addr = Web3.toChecksumAddress(pool_address)
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token0, token1 = await asyncio.gather(
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w3.eth.call({"to": addr, "data": "0x0dfe1681"}),
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w3.eth.call({"to": addr, "data": "0xd21220a7"}),
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)
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token0 = parse_token(w3, token0)
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token1 = parse_token(w3, token1)
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reserves[pool_address] = (token0, token1)
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new_reserves.append(
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{"pool_address": pool_address, "token0": token0, "token1": token1}
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)
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am0, am1, _, _, _ = get_swap_v3(parse_data(log))
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swap = Swap(
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abi_name="uniswap_v3",
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transaction_hash=transaction_hash,
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block_number=block,
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trace_address=[parse_logIndex(log)],
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contract_address=pool_address,
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from_address="0x" + parse_topic(log, 1)[26:],
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to_address="0x" + parse_topic(log, 2)[26:],
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token_in_address=token0 if am0 > 0 else token1, # TODO
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token_in_amount=am0 if am0 > 0 else am1,
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token_out_address=token1 if am1 < 0 else token0, # TODO
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token_out_amount=-am1 if am1 < 0 else -am0,
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protocol=None,
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error=None,
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)
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cswaps.append(swap)
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elif parse_topic(log, 0) == topic_swap_synapse:
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block = parse_blockNumber(log)
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transaction_hash = parse_transactionHash(log)
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pool_address = parse_address(log)
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sold, bought, soldId, boughtId = get_swap_synapse(parse_data(log))
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if pool_address in reserves:
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pass # TODO
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else:
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addr = Web3.toChecksumAddress(pool_address)
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soldToken, boughtToken = await asyncio.gather(
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w3.eth.call({"to": addr, "data": "0x82b86600" + soldId}),
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w3.eth.call({"to": addr, "data": "0x82b86600" + boughtId}),
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)
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soldToken = parse_token(w3, soldToken)
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boughtToken = parse_token(w3, boughtToken)
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# reserves[pool_address] = (token0, token1)
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# new_reserves.append(
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# {
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# "pool_address": pool_address,
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# "token0": token0,
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# "token1": token1
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# }
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# )
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swap = Swap(
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abi_name="synapse",
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transaction_hash=transaction_hash,
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block_number=block,
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trace_address=[parse_logIndex(log)],
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contract_address=pool_address,
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from_address="0x" + parse_topic(log, 1)[26:],
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to_address="0x" + parse_topic(log, 1)[26:],
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token_in_address=soldToken,
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token_in_amount=sold,
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token_out_address=boughtToken,
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token_out_amount=bought,
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protocol=None,
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error=None,
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)
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cswaps.append(swap)
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elif parse_topic(log, 0) == topic_liquidation:
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block = str(parse_blockNumber(log))
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am_debt, am_recv, addr_usr = get_liquidation(parse_data(log))
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liquidation = Liquidation(
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liquidated_user="0x" + parse_topic(log, 3)[26:],
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liquidator_user=addr_usr,
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debt_token_address="0x" + parse_topic(log, 2)[26:],
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debt_purchase_amount=am_debt,
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received_amount=am_recv,
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received_token_address="0x" + parse_topic(log, 1)[26:],
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protocol=None,
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transaction_hash=parse_transactionHash(log),
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trace_address=[parse_logIndex(log)],
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block_number=block,
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error=None,
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)
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cliquidations.append(liquidation)
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return cswaps, cliquidations, new_reserves
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async def get_classified_traces_from_events(w3, after_block, before_block, reserves):
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start = after_block
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stride = 2000
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topic_swap_v2 = "0xd78ad95fa46c994b6551d0da85fc275fe613ce37657fb8d5e3d130840159d822"
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topic_swap_v3 = "0xc42079f94a6350d7e6235f29174924f928cc2ac818eb64fed8004e115fbcca67"
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topic_swap_synapse = (
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"0xc6c1e0630dbe9130cc068028486c0d118ddcea348550819defd5cb8c257f8a38"
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)
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topic_liquidation = (
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"0xe413a321e8681d831f4dbccbca790d2952b56f977908e45be37335533e005286"
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)
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while start < before_block:
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begin = start
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end = start + stride if (start + stride) < before_block else before_block
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end -= 1
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start += stride
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logger.info("fetching from node... {} {}".format(begin, end))
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all_logs = await _get_logs_for_topics(
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w3,
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begin,
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end,
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[[topic_swap_v2, topic_swap_v3, topic_swap_synapse, topic_liquidation]],
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)
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yield await classify_logs(all_logs, reserves, w3)
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async def create_from_block_number(
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w3: Web3,
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block_number: int,
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trace_db_session: Optional[orm.Session],
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) -> Block:
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block_timestamp, receipts, traces, base_fee_per_gas = await asyncio.gather(
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_find_or_fetch_block_timestamp(w3, block_number, trace_db_session),
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_find_or_fetch_block_receipts(w3, block_number, trace_db_session),
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_find_or_fetch_block_traces(w3, block_number, trace_db_session),
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_find_or_fetch_base_fee_per_gas(w3, block_number, trace_db_session),
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)
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miner_address = _get_miner_address_from_traces(traces)
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return Block(
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block_number=block_number,
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block_timestamp=block_timestamp,
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miner=miner_address,
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base_fee_per_gas=base_fee_per_gas,
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traces=traces,
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receipts=receipts,
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)
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async def _find_or_fetch_block_timestamp(
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w3,
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block_number: int,
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trace_db_session: Optional[orm.Session],
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) -> int:
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if trace_db_session is not None:
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existing_block_timestamp = _find_block_timestamp(trace_db_session, block_number)
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if existing_block_timestamp is not None:
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return existing_block_timestamp
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return await _fetch_block_timestamp(w3, block_number)
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async def _find_or_fetch_block_receipts(
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w3,
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block_number: int,
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trace_db_session: Optional[orm.Session],
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) -> List[Receipt]:
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if trace_db_session is not None:
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existing_block_receipts = _find_block_receipts(trace_db_session, block_number)
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if existing_block_receipts is not None:
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return existing_block_receipts
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return await _fetch_block_receipts(w3, block_number)
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async def _find_or_fetch_block_traces(
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w3,
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block_number: int,
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trace_db_session: Optional[orm.Session],
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) -> List[Trace]:
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if trace_db_session is not None:
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existing_block_traces = _find_block_traces(trace_db_session, block_number)
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if existing_block_traces is not None:
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return existing_block_traces
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return await _fetch_block_traces(w3, block_number)
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async def _find_or_fetch_base_fee_per_gas(
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w3,
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block_number: int,
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trace_db_session: Optional[orm.Session],
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) -> int:
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if trace_db_session is not None:
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existing_base_fee_per_gas = _find_base_fee_per_gas(
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trace_db_session, block_number
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)
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if existing_base_fee_per_gas is not None:
|
|
return existing_base_fee_per_gas
|
|
|
|
return await fetch_base_fee_per_gas(w3, block_number)
|
|
|
|
|
|
async def _fetch_block_timestamp(w3, block_number: int) -> int:
|
|
block_json = await w3.eth.get_block(block_number)
|
|
return block_json["timestamp"]
|
|
|
|
|
|
async def _fetch_block_receipts(w3, block_number: int) -> List[Receipt]:
|
|
receipts_json = await w3.eth.get_block_receipts(block_number)
|
|
return [Receipt(**receipt) for receipt in receipts_json]
|
|
|
|
|
|
async def _fetch_block_traces(w3, block_number: int) -> List[Trace]:
|
|
traces_json = await w3.eth.trace_block(block_number)
|
|
return [Trace(**trace_json) for trace_json in traces_json]
|
|
|
|
|
|
def _find_block_timestamp(
|
|
trace_db_session: orm.Session,
|
|
block_number: int,
|
|
) -> Optional[int]:
|
|
result = trace_db_session.execute(
|
|
"SELECT block_timestamp FROM block_timestamps WHERE block_number = :block_number",
|
|
params={"block_number": block_number},
|
|
).one_or_none()
|
|
|
|
if result is None:
|
|
return None
|
|
else:
|
|
(block_timestamp,) = result
|
|
return block_timestamp
|
|
|
|
|
|
def _find_block_traces(
|
|
trace_db_session: orm.Session,
|
|
block_number: int,
|
|
) -> Optional[List[Trace]]:
|
|
result = trace_db_session.execute(
|
|
"SELECT raw_traces FROM block_traces WHERE block_number = :block_number",
|
|
params={"block_number": block_number},
|
|
).one_or_none()
|
|
|
|
if result is None:
|
|
return None
|
|
else:
|
|
(traces_json,) = result
|
|
return [Trace(**trace_json) for trace_json in traces_json]
|
|
|
|
|
|
def _find_block_receipts(
|
|
trace_db_session: orm.Session,
|
|
block_number: int,
|
|
) -> Optional[List[Receipt]]:
|
|
result = trace_db_session.execute(
|
|
"SELECT raw_receipts FROM block_receipts WHERE block_number = :block_number",
|
|
params={"block_number": block_number},
|
|
).one_or_none()
|
|
|
|
if result is None:
|
|
return None
|
|
else:
|
|
(receipts_json,) = result
|
|
return [Receipt(**receipt) for receipt in receipts_json]
|
|
|
|
|
|
def _find_base_fee_per_gas(
|
|
trace_db_session: orm.Session,
|
|
block_number: int,
|
|
) -> Optional[int]:
|
|
result = trace_db_session.execute(
|
|
"SELECT base_fee_in_wei FROM base_fee WHERE block_number = :block_number",
|
|
params={"block_number": block_number},
|
|
).one_or_none()
|
|
|
|
if result is None:
|
|
return None
|
|
else:
|
|
(base_fee,) = result
|
|
return base_fee
|
|
|
|
|
|
def _get_miner_address_from_traces(traces: List[Trace]) -> Optional[str]:
|
|
for trace in traces:
|
|
if trace.type == TraceType.reward:
|
|
return trace.action["author"]
|
|
|
|
return None
|
|
|
|
|
|
def get_transaction_hashes(calls: List[Trace]) -> List[str]:
|
|
result = []
|
|
|
|
for call in calls:
|
|
if call.type != TraceType.reward:
|
|
if (
|
|
call.transaction_hash is not None
|
|
and call.transaction_hash not in result
|
|
):
|
|
result.append(call.transaction_hash)
|
|
|
|
return result
|