290 lines
16 KiB
Python
290 lines
16 KiB
Python
import asyncio
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import logging
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import time
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from typing import List, Optional, Tuple, Dict
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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.receipts import Receipt
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from mev_inspect.schemas.traces import Trace, TraceType
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from mev_inspect.schemas.swaps import Swap
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from mev_inspect.utils import hex_to_int
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logger = logging.getLogger(__name__)
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async def get_latest_block_number(base_provider) -> int:
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latest_block = await base_provider.make_request(
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"eth_getBlockByNumber",
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["latest", False],
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)
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return hex_to_int(latest_block["result"]["number"])
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async def _get_logs_for_topics(base_provider, after_block, before_block, topics):
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print("getting log traces")
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start = time.time()
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logs = await base_provider.make_request("eth_getLogs",
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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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print("getting log traces done ", time.time() - start, len(logs))
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return logs['result']
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def _logs_by_tx(logs):
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logs_by_tx = dict()
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for log in logs:
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transaction_hash = log['transactionHash']
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if transaction_hash in logs_by_tx.keys():
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logs_by_tx[transaction_hash].append(log)
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else:
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logs_by_tx[transaction_hash] = [log]
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return logs_by_tx
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def get_amounts(data):
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data = data[2:]
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# print(data)
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return int(data[0:64], base=16), int(data[64:128], base=16), int(data[128:192], base=16), int(data[192:256], base=16)
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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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async def classify_logs(logs, reserves, w3):
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cswaps = []
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topic_swap = "0xd78ad95fa46c994b6551d0da85fc275fe613ce37657fb8d5e3d130840159d822"
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for log in logs:
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if log['topics'][0] == topic_swap:
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# print(log)
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block = int(log['blockNumber'], 16)
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transaction_hash = log['transactionHash']
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pool_address = log['address']
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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 = await w3.eth.call({'to': addr, 'data': '0x0dfe1681'})
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token1 = await w3.eth.call({'to': addr, 'data': '0xd21220a7'})
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token0 = w3.toHex(token0)
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token1 = w3.toHex(token1)
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reserves[pool_address] = (token0, token1)
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am0in, am1in, am0out, am1out = get_amounts(log['data'])
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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=[int(log['logIndex'], 16)],
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contract_address=pool_address,
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from_address="0x"+log['topics'][1][26:],
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to_address="0x"+log['topics'][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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return cswaps
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async def get_classified_traces_from_events(w3: Web3, after_block: int, before_block: int):
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base_provider = w3.provider
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start = after_block
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stride = 300
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reserves: Dict[str, Tuple[str, str]] = dict()
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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-1
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start += stride
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print("fetching from node...", begin, end, flush=True)
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swaplogs = await _get_logs_for_topics(base_provider, begin, end, ["0xd78ad95fa46c994b6551d0da85fc275fe613ce37657fb8d5e3d130840159d822"])
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logs_by_tx = _logs_by_tx(swaplogs)
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for tx in logs_by_tx.keys():
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yield await classify_logs(logs_by_tx[tx], 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:
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return existing_base_fee_per_gas
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return await fetch_base_fee_per_gas(w3, block_number)
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async def _fetch_block_timestamp(w3, block_number: int) -> int:
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block_json = await w3.eth.get_block(block_number)
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return block_json["timestamp"]
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async def _fetch_block_receipts(w3, block_number: int) -> List[Receipt]:
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receipts_json = await w3.eth.get_block_receipts(block_number)
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return [Receipt(**receipt) for receipt in receipts_json]
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async def _fetch_block_traces(w3, block_number: int) -> List[Trace]:
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traces_json = await w3.eth.trace_block(block_number)
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return [Trace(**trace_json) for trace_json in traces_json]
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def _find_block_timestamp(
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trace_db_session: orm.Session,
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block_number: int,
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) -> Optional[int]:
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result = trace_db_session.execute(
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"SELECT block_timestamp FROM block_timestamps WHERE block_number = :block_number",
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params={"block_number": block_number},
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).one_or_none()
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if result is None:
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return None
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else:
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(block_timestamp,) = result
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return block_timestamp
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def _find_block_traces(
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trace_db_session: orm.Session,
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block_number: int,
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) -> Optional[List[Trace]]:
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result = trace_db_session.execute(
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"SELECT raw_traces FROM block_traces WHERE block_number = :block_number",
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params={"block_number": block_number},
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).one_or_none()
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if result is None:
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return None
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else:
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(traces_json,) = result
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return [Trace(**trace_json) for trace_json in traces_json]
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def _find_block_receipts(
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trace_db_session: orm.Session,
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block_number: int,
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) -> Optional[List[Receipt]]:
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result = trace_db_session.execute(
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"SELECT raw_receipts FROM block_receipts WHERE block_number = :block_number",
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params={"block_number": block_number},
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).one_or_none()
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if result is None:
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return None
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else:
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(receipts_json,) = result
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return [Receipt(**receipt) for receipt in receipts_json]
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def _find_base_fee_per_gas(
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trace_db_session: orm.Session,
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block_number: int,
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) -> Optional[int]:
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result = trace_db_session.execute(
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"SELECT base_fee_in_wei FROM base_fee WHERE block_number = :block_number",
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params={"block_number": block_number},
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).one_or_none()
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if result is None:
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return None
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else:
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(base_fee,) = result
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return base_fee
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def _get_miner_address_from_traces(traces: List[Trace]) -> Optional[str]:
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for trace in traces:
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if trace.type == TraceType.reward:
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return trace.action["author"]
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return None
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def get_transaction_hashes(calls: List[Trace]) -> List[str]:
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result = []
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for call in calls:
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if call.type != TraceType.reward:
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if (
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call.transaction_hash is not None
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and call.transaction_hash not in result
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):
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result.append(call.transaction_hash)
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return result
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