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main.py
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main.py
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# coding=utf-8
"""
This is the main file for configuring the bot and running the fastlane bot.
(c) Copyright Bprotocol foundation 2023.
Licensed under MIT
"""
from fastlane_bot.events.event_gatherer import EventGatherer
from fastlane_bot.exceptions import ReadOnlyException, FlashloanUnavailableException
from fastlane_bot.events.version_utils import check_version_requirements
from fastlane_bot.pool_finder import PoolFinder
from fastlane_bot.tools.cpc import T
check_version_requirements(required_version="6.11.0", package_name="web3")
import os, sys
import time
from traceback import format_exc
import pandas as pd
from dotenv import load_dotenv
from web3 import Web3, HTTPProvider
from fastlane_bot import __version__ as bot_version
from fastlane_bot.events.async_backdate_utils import (
async_handle_initial_iteration,
)
from fastlane_bot.events.async_event_update_utils import (
async_update_pools_from_contracts,
)
from fastlane_bot.events.managers.manager import Manager
from fastlane_bot.events.multicall_utils import multicall_every_iteration
from fastlane_bot.events.utils import (
add_initial_pool_data,
get_static_data,
handle_exchanges,
handle_target_tokens,
handle_flashloan_tokens,
get_config,
get_loglevel,
update_pools_from_events,
process_new_events,
write_pool_data_to_disk,
init_bot,
get_cached_events,
handle_subsequent_iterations,
handle_duplicates,
get_latest_events,
get_start_block,
set_network_to_mainnet_if_replay,
set_network_to_tenderly_if_replay,
get_current_block,
handle_tenderly_event_exchanges,
handle_static_pools_update,
read_csv_file,
handle_tokens_csv,
check_and_approve_tokens,
)
from fastlane_bot.utils import find_latest_timestamped_folder
from run_blockchain_terraformer import terraform_blockchain
import argparse
load_dotenv()
def process_arguments(args):
"""
Process and transform command line arguments.
:param args: Namespace object containing command line arguments.
:return: Processed arguments.
"""
def is_true(x):
return x.lower() == "true"
def int_or_none(x):
return int(x) if x else None
# Define the transformations for each argument
transformations = {
"backdate_pools": is_true,
"n_jobs": int,
"polling_interval": int,
"alchemy_max_block_fetch": int,
"reorg_delay": int,
"use_cached_events": is_true,
"run_data_validator": is_true,
"randomizer": int,
"limit_bancor3_flashloan_tokens": is_true,
"timeout": int_or_none,
"replay_from_block": int_or_none,
"increment_time": int,
"increment_blocks": int,
"pool_data_update_frequency": int,
"self_fund": is_true,
"read_only": is_true,
"is_args_test": is_true,
"pool_finder_period": int,
}
# Apply the transformations
for arg, transform in transformations.items():
if hasattr(args, arg):
setattr(args, arg, transform(getattr(args, arg)))
return args
def main(args: argparse.Namespace) -> None:
"""
Main function for running the fastlane bot.
Args:
args: Command line arguments. See the argparse.ArgumentParser in the __main__ block for details.
"""
args = process_arguments(args)
if args.replay_from_block or args.tenderly_fork_id:
if args.replay_from_block:
assert args.replay_from_block > 0, "The block number to replay from must be greater than 0."
args.polling_interval = 0
args.reorg_delay = 0
args.use_cached_events = False
# Set config
loglevel = get_loglevel(args.loglevel)
# Initialize the config object
cfg = get_config(
args.default_min_profit_gas_token,
args.limit_bancor3_flashloan_tokens,
loglevel,
args.logging_path,
args.blockchain,
args.flashloan_tokens,
args.tenderly_fork_id,
args.self_fund,
args.rpc_url,
)
if not cfg.SELF_FUND and cfg.network.IS_NO_FLASHLOAN_AVAILABLE:
raise FlashloanUnavailableException(f"Network: {cfg.NETWORK} does not support flashloans. "
f"This network requires the use of your own funds by setting the configuration self_fund to True."
f"Read the description of self_fund in the README before proceeding.")
base_path = os.path.normpath(
f"fastlane_bot/data/blockchain_data/{args.blockchain}/"
)
tokens_filepath = os.path.join(base_path, "tokens.csv")
if not os.path.exists(tokens_filepath) and not args.read_only:
df = pd.DataFrame(columns=["address", "decimals"])
df.to_csv(tokens_filepath)
elif not os.path.exists(tokens_filepath) and args.read_only:
raise ReadOnlyException(tokens_filepath)
tokens = read_csv_file(tokens_filepath)
cfg.logger.info(f"tokens: {len(tokens)}, {tokens['address'].tolist()[0]}")
# Format the flashloan tokens
args.flashloan_tokens = handle_flashloan_tokens(cfg, args.flashloan_tokens, tokens)
if args.self_fund:
check_and_approve_tokens(cfg=cfg, tokens=args.flashloan_tokens)
# Search the logging directory for the latest timestamped folder
args.logging_path = find_latest_timestamped_folder(args.logging_path)
# Format the target tokens
args.target_tokens = handle_target_tokens(cfg, args.flashloan_tokens, args.target_tokens)
# Format the exchanges
exchanges = handle_exchanges(cfg, args.exchanges)
# Format the tenderly event exchanges
tenderly_event_exchanges = handle_tenderly_event_exchanges(
cfg, args.tenderly_event_exchanges, args.tenderly_fork_id
)
# Get the current python version used
python_version = sys.version
python_info = sys.version_info
import platform
os_system = platform.system()
# Log the run configuration
logging_header = f"""
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Starting fastlane bot with the following configuration:
bot_version: {bot_version}
os_system: {os_system}
python_version: {python_version}
python_info: {python_info}
logging_path: {args.logging_path}
arb_mode: {args.arb_mode}
blockchain: {args.blockchain}
default_min_profit_gas_token: {args.default_min_profit_gas_token}
exchanges: {exchanges}
flashloan_tokens: {args.flashloan_tokens}
target_tokens: {args.target_tokens}
use_specific_exchange_for_target_tokens: {args.use_specific_exchange_for_target_tokens}
loglevel: {loglevel}
backdate_pools: {args.backdate_pools}
alchemy_max_block_fetch: {args.alchemy_max_block_fetch}
static_pool_data_filename: {args.static_pool_data_filename}
cache_latest_only: {args.cache_latest_only}
n_jobs: {args.n_jobs}
polling_interval: {args.polling_interval}
reorg_delay: {args.reorg_delay}
use_cached_events: {args.use_cached_events}
run_data_validator: {args.run_data_validator}
randomizer: {args.randomizer}
limit_bancor3_flashloan_tokens: {args.limit_bancor3_flashloan_tokens}
timeout: {args.timeout}
replay_from_block: {args.replay_from_block}
tenderly_fork_id: {args.tenderly_fork_id}
tenderly_event_exchanges: {tenderly_event_exchanges}
increment_time: {args.increment_time}
increment_blocks: {args.increment_blocks}
pool_data_update_frequency: {args.pool_data_update_frequency}
prefix_path: {args.prefix_path}
self_fund: {args.self_fund}
read_only: {args.read_only}
pool_finder_period: {args.pool_finder_period}
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Copy and paste the above configuration when reporting a bug. Please also include the error message and stack trace below:
<INSERT ERROR MESSAGE AND STACK TRACE HERE>
Please direct all questions/reporting to the Fastlane Telegram channel: https://t.me/BancorDevelopers
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
cfg.logging_header = logging_header
cfg.logger.info(logging_header)
if args.is_args_test:
return
# Get the static pool data, tokens and uniswap v2 event mappings
(
static_pool_data,
tokens,
uniswap_v2_event_mappings,
uniswap_v3_event_mappings,
solidly_v2_event_mappings,
) = get_static_data(
cfg, exchanges, args.blockchain, args.static_pool_data_filename, args.read_only
)
# Break if timeout is hit to test the bot flags
if args.timeout == 1:
cfg.logger.info("Timeout to test the bot flags")
return
if args.tenderly_fork_id:
w3_tenderly = Web3(
HTTPProvider(f"https://rpc.tenderly.co/fork/{args.tenderly_fork_id}")
)
else:
w3_tenderly = None
# Initialize data fetch manager
mgr = Manager(
web3=cfg.w3,
w3_async=cfg.w3_async,
cfg=cfg,
pool_data=static_pool_data.to_dict(orient="records"),
SUPPORTED_EXCHANGES=exchanges,
alchemy_max_block_fetch=args.alchemy_max_block_fetch,
uniswap_v2_event_mappings=uniswap_v2_event_mappings,
uniswap_v3_event_mappings=uniswap_v3_event_mappings,
solidly_v2_event_mappings=solidly_v2_event_mappings,
tokens=tokens.to_dict(orient="records"),
replay_from_block=args.replay_from_block,
target_tokens=args.target_tokens,
tenderly_fork_id=args.tenderly_fork_id,
tenderly_event_exchanges=tenderly_event_exchanges,
w3_tenderly=w3_tenderly,
forked_exchanges=cfg.UNI_V2_FORKS + cfg.UNI_V3_FORKS + cfg.SOLIDLY_V2_FORKS,
blockchain=args.blockchain,
prefix_path=args.prefix_path,
read_only=args.read_only,
)
# Add initial pool data to the manager
add_initial_pool_data(cfg, mgr, args.n_jobs)
# Run the main loop
run(mgr, args)
def run(mgr, args, tenderly_uri=None) -> None:
loop_idx = last_block = last_block_queried = total_iteration_time = 0
start_timeout = time.time()
mainnet_uri = mgr.cfg.w3.provider.endpoint_uri
handle_static_pools_update(mgr)
event_gatherer = EventGatherer(
config=mgr.cfg,
w3=mgr.w3_async,
exchanges=mgr.exchanges,
)
pool_finder = PoolFinder(
carbon_forks=mgr.cfg.network.CARBON_V1_FORKS,
uni_v3_forks=mgr.cfg.network.UNI_V3_FORKS,
flashloan_tokens=args.flashloan_tokens,
exchanges=mgr.exchanges,
web3=mgr.web3,
multicall_address=mgr.cfg.network.MULTICALL_CONTRACT_ADDRESS
)
while True:
try:
# ensure 'last_updated_block' is in pool_data for all pools
for pool in mgr.pool_data:
if "last_updated_block" not in pool:
pool["last_updated_block"] = last_block_queried
# Get current block number, then adjust to the block number reorg_delay blocks ago to avoid reorgs
start_block, replay_from_block = get_start_block(
args.alchemy_max_block_fetch,
last_block,
mgr,
args.reorg_delay,
args.replay_from_block,
)
# Get all events from the last block to the current block
current_block = get_current_block(
last_block,
mgr,
args.reorg_delay,
replay_from_block,
args.tenderly_fork_id,
)
# Log the current start, end and last block
mgr.cfg.logger.info(
f"Fetching events from {start_block} to {current_block}... {last_block}"
)
# Set the network connection to Mainnet if replaying from a block
set_network_to_mainnet_if_replay(
last_block,
loop_idx,
mainnet_uri,
mgr,
replay_from_block,
args.use_cached_events,
)
# Get the events
latest_events = (
get_cached_events(mgr, args.logging_path)
if args.use_cached_events
else get_latest_events(
current_block,
mgr,
args.n_jobs,
start_block,
args.cache_latest_only,
args.logging_path,
event_gatherer
)
)
iteration_start_time = time.time()
# Update the pools from the latest events
update_pools_from_events(args.n_jobs, mgr, latest_events)
# Update new pool events from contracts
if len(mgr.pools_to_add_from_contracts) > 0:
mgr.cfg.logger.info(
f"Adding {len(mgr.pools_to_add_from_contracts)} new pools from contracts, "
f"{len(mgr.pool_data)} total pools currently exist. Current block: {current_block}."
)
async_update_pools_from_contracts(mgr, current_block=current_block)
mgr.pools_to_add_from_contracts = []
# Increment the loop index
loop_idx += 1
# Set the network connection to Tenderly if replaying from a block
tenderly_uri, forked_from_block = set_network_to_tenderly_if_replay(
last_block=last_block,
loop_idx=loop_idx,
mgr=mgr,
replay_from_block=replay_from_block,
tenderly_uri=tenderly_uri,
use_cached_events=args.use_cached_events,
tenderly_fork_id=args.tenderly_fork_id,
)
# Handle the initial iteration (backdate pools, update pools from contracts, etc.)
async_handle_initial_iteration(
backdate_pools=args.backdate_pools,
current_block=current_block,
last_block=last_block,
mgr=mgr,
start_block=start_block,
)
# Run multicall every iteration
multicall_every_iteration(current_block=current_block, mgr=mgr)
# Update the last block number
last_block = current_block
if not mgr.read_only:
# Write the pool data to disk
write_pool_data_to_disk(
cache_latest_only=args.cache_latest_only,
logging_path=args.logging_path,
mgr=mgr,
current_block=current_block,
)
# Handle/remove duplicates in the pool data
handle_duplicates(mgr)
# Re-initialize the bot
bot = init_bot(mgr)
if args.use_specific_exchange_for_target_tokens is not None:
target_tokens = bot.get_tokens_in_exchange(
exchange_name=args.use_specific_exchange_for_target_tokens
)
mgr.cfg.logger.info(
f"[main] Using only tokens in: {args.use_specific_exchange_for_target_tokens}, found {len(target_tokens)} tokens"
)
if not mgr.read_only:
handle_tokens_csv(mgr, mgr.prefix_path)
# Handle subsequent iterations
handle_subsequent_iterations(
arb_mode=args.arb_mode,
bot=bot,
flashloan_tokens=args.flashloan_tokens,
randomizer=args.randomizer,
run_data_validator=args.run_data_validator,
target_tokens=args.target_tokens,
loop_idx=loop_idx,
logging_path=args.logging_path,
replay_from_block=replay_from_block,
tenderly_uri=tenderly_uri,
mgr=mgr,
forked_from_block=forked_from_block,
)
# Sleep for the polling interval
if not replay_from_block and args.polling_interval > 0:
mgr.cfg.logger.info(
f"[main] Sleeping for polling_interval={args.polling_interval} seconds..."
)
time.sleep(args.polling_interval)
# Check if timeout has been hit, and if so, break the loop for tests
if args.timeout is not None and time.time() - start_timeout > args.timeout:
mgr.cfg.logger.info("[main] Timeout hit... stopping bot")
break
# Delete all Tenderly forks except the most recent one
if replay_from_block and not args.tenderly_fork_id:
break
if loop_idx == 1:
mgr.cfg.logger.info(
"""
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Finished first iteration of data sync. Now starting main loop arbitrage search.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
"""
)
if args.tenderly_fork_id:
w3 = Web3(HTTPProvider(tenderly_uri))
# Increase time and blocks
params = [w3.to_hex(args.increment_time)] # number of seconds
w3.provider.make_request(method="evm_increaseTime", params=params)
params = [w3.to_hex(args.increment_blocks)] # number of blocks
w3.provider.make_request(method="evm_increaseBlocks", params=params)
if (
loop_idx % args.pool_data_update_frequency == 0
and args.pool_data_update_frequency != -1
):
mgr.cfg.logger.info(
f"[main] Terraforming {args.blockchain}. Standby for oxygen levels."
)
sblock = (
(current_block - (current_block - last_block_queried))
if loop_idx > 1
else None
)
(
exchange_df,
uniswap_v2_event_mappings,
uniswap_v3_event_mappings,
solidly_v2_event_mappings,
) = terraform_blockchain(
network_name=args.blockchain,
web3=mgr.web3,
start_block=sblock,
)
mgr.uniswap_v2_event_mappings = dict(
uniswap_v2_event_mappings[["address", "exchange"]].values
)
mgr.uniswap_v3_event_mappings = dict(
uniswap_v3_event_mappings[["address", "exchange"]].values
)
mgr.solidly_v2_event_mappings = dict(
solidly_v2_event_mappings[["address", "exchange"]].values
)
if args.pool_finder_period > 0 and (loop_idx - 1) % args.pool_finder_period == 0:
mgr.cfg.logger.info(f"Searching for unsupported Carbon pairs.")
uni_v2, uni_v3, solidly_v2 = pool_finder.get_pools_for_unsupported_pairs(mgr.cfg, mgr.pool_data, arb_mode=args.arb_mode)
process_new_events(uni_v2, mgr.uniswap_v2_event_mappings, f"fastlane_bot/data/blockchain_data/{args.blockchain}/uniswap_v2_event_mappings.csv", args.read_only)
process_new_events(uni_v3, mgr.uniswap_v3_event_mappings, f"fastlane_bot/data/blockchain_data/{args.blockchain}/uniswap_v3_event_mappings.csv", args.read_only)
process_new_events(solidly_v2, mgr.solidly_v2_event_mappings, f"fastlane_bot/data/blockchain_data/{args.blockchain}/solidly_v2_event_mappings.csv", args.read_only)
handle_static_pools_update(mgr)
mgr.cfg.logger.info(f"Number of pools added: {len(uni_v2) + len(uni_v3) + len(solidly_v2)}")
last_block_queried = current_block
total_iteration_time += time.time() - iteration_start_time
mgr.cfg.logger.info(
f"\n\n********************************************\n"
f"Average Total iteration time for loop {loop_idx}: {total_iteration_time / loop_idx}\n"
f"bot_version: {bot_version}\n"
f"\n********************************************\n\n"
)
except Exception:
mgr.cfg.logger.error(f"Error in main loop: {format_exc()}")
mgr.cfg.logger.error(
f"Please report this error to the Fastlane Telegram channel if it persists."
f"{mgr.cfg.logging_header}"
)
time.sleep(args.polling_interval)
if args.timeout is not None and time.time() - start_timeout > args.timeout:
mgr.cfg.logger.info("Timeout hit... stopping bot")
mgr.cfg.logger.info("[main] Timeout hit... stopping bot")
break
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument(
"--cache_latest_only",
default='True',
help="Set to True for production. Set to False for testing / debugging",
)
parser.add_argument(
"--backdate_pools",
default='False',
help="Set to False for faster testing / debugging",
)
parser.add_argument(
"--static_pool_data_filename",
default="static_pool_data",
help="Filename of the static pool data.",
)
parser.add_argument(
"--arb_mode",
default="multi_pairwise_all",
help="See arb_mode in bot.py",
choices=[
"single",
"multi",
"triangle",
"multi_triangle",
"b3_two_hop",
"multi_pairwise_pol",
"multi_pairwise_all"
],
)
parser.add_argument(
"--flashloan_tokens",
default=f"{T.LINK},{T.NATIVE_ETH},{T.BNT},{T.WBTC},{T.DAI},{T.USDC},{T.USDT},{T.WETH}",
help="The --flashloan_tokens flag refers to those token denominations which the bot can take "
"a flash loan in.",
)
parser.add_argument(
"--n_jobs", default=-1, help="Number of parallel jobs to run"
)
parser.add_argument(
"--exchanges",
default="carbon_v1,bancor_v3,bancor_v2,bancor_pol,uniswap_v3,uniswap_v2,sushiswap_v2,balancer,pancakeswap_v2,pancakeswap_v3",
help="Comma separated external exchanges.",
)
parser.add_argument(
"--polling_interval",
default=1,
help="Polling interval in seconds",
)
parser.add_argument(
"--alchemy_max_block_fetch",
default=2000,
help="Max number of blocks to fetch from alchemy",
)
parser.add_argument(
"--reorg_delay",
default=0,
help="Number of blocks delayed to avoid reorgs",
)
parser.add_argument(
"--logging_path", default="", help="The logging path."
)
parser.add_argument(
"--loglevel",
default="INFO",
choices=["DEBUG", "INFO", "WARNING", "ERROR"],
help="The logging level.",
)
parser.add_argument(
"--use_cached_events",
default='False',
help="Set to True for debugging / testing. Set to False for production.",
)
parser.add_argument(
"--run_data_validator",
default='False',
help="Set to True for debugging / testing. Set to False for production.",
)
parser.add_argument(
"--randomizer",
default="3",
help="Set to the number of arb opportunities to pick from.",
)
parser.add_argument(
"--limit_bancor3_flashloan_tokens",
default='True',
help="Only applies if arb_mode is `bancor_v3` or `b3_two_hop`.",
)
parser.add_argument(
"--default_min_profit_gas_token",
default="0.01",
help="Set to the default minimum profit in gas token.",
)
parser.add_argument(
"--timeout",
default=None,
help="Set to the timeout in seconds. Set to None for no timeout.",
)
parser.add_argument(
"--target_tokens",
default=None,
help="A comma-separated string of tokens to target.",
)
parser.add_argument(
"--replay_from_block",
default=None,
help="Set to a block number to replay from that block.",
)
parser.add_argument(
"--tenderly_fork_id",
default=None,
help="Set to a Tenderly fork id.",
)
parser.add_argument(
"--tenderly_event_exchanges",
default="pancakeswap_v2,pancakeswap_v3",
help="A comma-separated string of exchanges to include for the Tenderly event fetcher.",
)
parser.add_argument(
"--increment_time",
default=1,
help="If tenderly_fork_id is set, this is the number of seconds to increment the fork time by for each iteration.",
)
parser.add_argument(
"--increment_blocks",
default=1,
help="If tenderly_fork_id is set, this is the number of blocks to increment the block number "
"by for each iteration.",
)
parser.add_argument(
"--blockchain",
default="ethereum",
help="A blockchain from the list. Blockchains not in this list do not have a deployed Fast Lane contract and are not supported.",
choices=["ethereum", "coinbase_base", "fantom", "mantle", "linea", "sei"],
)
parser.add_argument(
"--pool_data_update_frequency",
default=-1,
help="How frequently pool data should be updated, in main loop iterations.",
)
parser.add_argument(
"--use_specific_exchange_for_target_tokens",
default=None,
help="If an exchange is specified, this will limit the scope of tokens to the tokens found on the exchange",
)
parser.add_argument(
"--prefix_path",
default="",
help="Prefixes the path to the write folders (used for deployment)",
)
parser.add_argument(
"--self_fund",
default='False',
help="If True, the bot will attempt to submit arbitrage transactions using funds in your "
"wallet when possible.",
)
parser.add_argument(
"--read_only",
default='True',
help="If True, the bot will skip all operations which write to disk. Use this flag if you're "
"running the bot in an environment with restricted write permissions.",
)
parser.add_argument(
"--is_args_test",
default='False',
help="The logging path.",
)
parser.add_argument(
"--rpc_url",
default=None,
help="Custom RPC URL. If not set, the bot will use the default Alchemy RPC URL for the blockchain (if available).",
)
parser.add_argument(
"--pool_finder_period",
default=100,
help="Searches for pools that can service Carbon strategies that do not have viable routes.",
)
# Process the arguments
args = parser.parse_args()
main(args)