""" Freqtrade is the main module of this bot. It contains the class Freqtrade() """ import copy import json import logging import time import traceback from datetime import datetime from typing import Dict, List, Optional, Any, Callable import arrow import requests from cachetools import cached, TTLCache from freqtrade import ( DependencyException, OperationalException, exchange, persistence, __version__, NotEnoughFundsExeption) from freqtrade.analyze import Analyze from freqtrade import constants from freqtrade.fiat_convert import CryptoToFiatConverter from freqtrade.persistence import Trade from freqtrade.rpc.rpc_manager import RPCManager from freqtrade.state import State logger = logging.getLogger(__name__) class FreqtradeBot(object): """ Freqtrade is the main class of the bot. This is from here the bot start its logic. """ def __init__(self, config: Dict[str, Any], db_url: Optional[str] = None): """ Init all variables and object the bot need to work :param config: configuration dict, you can use the Configuration.get_config() method to get the config dict. :param db_url: database connector string for sqlalchemy (Optional) """ logger.info( 'Starting freqtrade %s', __version__, ) # Init bot states self.state = State.STOPPED # Init objects self.config = config self.analyze = None self.fiat_converter = None self.rpc = None self.persistence = None self.exchange = None self._init_modules(db_url=db_url) def _init_modules(self, db_url: Optional[str] = None) -> None: """ Initializes all modules and updates the config :param db_url: database connector string for sqlalchemy (Optional) :return: None """ # Initialize all modules self.analyze = Analyze(self.config) self.fiat_converter = CryptoToFiatConverter() self.rpc = RPCManager(self) persistence.init(self.config, db_url) exchange.init(self.config) # Set initial application state initial_state = self.config.get('initial_state') if initial_state: self.state = State[initial_state.upper()] else: self.state = State.STOPPED def clean(self) -> bool: """ Cleanup the application state und finish all pending tasks :return: None """ self.rpc.send_msg('*Status:* `Stopping trader...`') logger.info('Stopping trader and cleaning up modules...') self.state = State.STOPPED self.rpc.cleanup() persistence.cleanup() return True def worker(self, old_state: None) -> State: """ Trading routine that must be run at each loop :param old_state: the previous service state from the previous call :return: current service state """ # Log state transition state = self.state if state != old_state: self.rpc.send_msg('*Status:* `{}`'.format(state.name.lower())) logger.info('Changing state to: %s', state.name) if state == State.STOPPED: time.sleep(1) elif state == State.RUNNING: min_secs = self.config.get('internals', {}).get( 'process_throttle_secs', constants.PROCESS_THROTTLE_SECS ) nb_assets = self.config.get('dynamic_whitelist', None) self._throttle(func=self._process, min_secs=min_secs, nb_assets=nb_assets) return state def _throttle(self, func: Callable[..., Any], min_secs: float, *args, **kwargs) -> Any: """ Throttles the given callable that it takes at least `min_secs` to finish execution. :param func: Any callable :param min_secs: minimum execution time in seconds :return: Any """ start = time.time() result = func(*args, **kwargs) end = time.time() duration = max(min_secs - (end - start), 0.0) logger.debug('Throttling %s for %.2f seconds', func.__name__, duration) time.sleep(duration) return result def _process(self, nb_assets: Optional[int] = 0) -> bool: """ Queries the persistence layer for open trades and handles them, otherwise a new trade is created. :param: nb_assets: the maximum number of pairs to be traded at the same time :return: True if one or more trades has been created or closed, False otherwise """ state_changed = False try: # Refresh whitelist based on wallet maintenance sanitized_list = self._refresh_whitelist( self._gen_pair_whitelist( self.config['stake_currency'] ) if nb_assets else self.config['exchange']['pair_whitelist'] ) # Keep only the subsets of pairs wanted (up to nb_assets) final_list = sanitized_list[:nb_assets] if nb_assets else sanitized_list self.config['exchange']['pair_whitelist'] = final_list # Query trades from persistence layer trades = Trade.query.filter(Trade.is_open.is_(True)).all() # First process current opened trades for trade in trades: state_changed |= self.process_maybe_execute_sell(trade) # Then looking for buy opportunities if len(trades) < self.config['max_open_trades']: try: state_changed = self.process_maybe_execute_buy() except NotEnoughFundsExeption: logger.warning('insufficient funds to execute this buy order, ignoring it!') state_changed = False if 'unfilledtimeout' in self.config: # Check and handle any timed out open orders self.check_handle_timedout(self.config['unfilledtimeout']) Trade.session.flush() except (requests.exceptions.RequestException, json.JSONDecodeError) as error: logger.warning('%s, retrying in 30 seconds...', error) time.sleep(constants.RETRY_TIMEOUT) except OperationalException: self.rpc.send_msg( '*Status:* OperationalException:\n```\n{traceback}```{hint}' .format( traceback=traceback.format_exc(), hint='Issue `/start` if you think it is safe to restart.' ) ) logger.exception('OperationalException. Stopping trader ...') self.state = State.STOPPED return state_changed @cached(TTLCache(maxsize=1, ttl=1800)) def _gen_pair_whitelist(self, base_currency: str, key: str = 'BaseVolume') -> List[str]: """ Updates the whitelist with with a dynamically generated list :param base_currency: base currency as str :param key: sort key (defaults to 'BaseVolume') :return: List of pairs """ summaries = sorted( (s for s in exchange.get_market_summaries() if s['MarketName'].startswith(base_currency)), key=lambda s: s.get(key) or 0.0, reverse=True ) return [s['MarketName'].replace('-', '_') for s in summaries] def _refresh_whitelist(self, whitelist: List[str]) -> List[str]: """ Check wallet health and remove pair from whitelist if necessary :param whitelist: the sorted list (based on BaseVolume) of pairs the user might want to trade :return: the list of pairs the user wants to trade without the one unavailable or black_listed """ sanitized_whitelist = whitelist health = exchange.get_wallet_health() known_pairs = set() for status in health: pair = '{}_{}'.format(self.config['stake_currency'], status['Currency']) # pair is not int the generated dynamic market, or in the blacklist ... ignore it if pair not in whitelist or pair in self.config['exchange'].get('pair_blacklist', []): continue # else the pair is valid known_pairs.add(pair) # Market is not active if not status['IsActive']: sanitized_whitelist.remove(pair) logger.info( 'Ignoring %s from whitelist (reason: %s).', pair, status.get('Notice') or 'wallet is not active' ) # We need to remove pairs that are unknown final_list = [x for x in sanitized_whitelist if x in known_pairs] return final_list def get_target_bid(self, ticker: Dict[str, float]) -> float: """ Calculates bid target between current ask price and last price :param ticker: Ticker to use for getting Ask and Last Price :return: float: Price """ if ticker['ask'] < ticker['last']: return ticker['ask'] balance = self.config['bid_strategy']['ask_last_balance'] return ticker['ask'] + balance * (ticker['last'] - ticker['ask']) def create_trade(self) -> bool: """ Checks the implemented trading indicator(s) for a randomly picked pair, if one pair triggers the buy_signal a new trade record gets created :param stake_amount: amount of btc to spend :param interval: Ticker interval used for Analyze :return: True if a trade object has been created and persisted, False otherwise """ stake_amount = self.config['stake_amount'] interval = self.analyze.get_ticker_interval() logger.info( 'Checking buy signals to create a new trade with stake_amount: %f ...', stake_amount ) whitelist = copy.deepcopy(self.config['exchange']['pair_whitelist']) # Check if stake_amount is fulfilled if exchange.get_balance(self.config['stake_currency']) < stake_amount: raise DependencyException( 'stake amount is not fulfilled (currency={})'.format(self.config['stake_currency']) ) # Remove currently opened and latest pairs from whitelist for trade in Trade.query.filter(Trade.is_open.is_(True)).all(): if trade.pair in whitelist: whitelist.remove(trade.pair) logger.debug('Ignoring %s in pair whitelist', trade.pair) if not whitelist: raise DependencyException('No currency pairs in whitelist') # Pick pair based on StochRSI buy signals for _pair in whitelist: (buy, sell) = self.analyze.get_signal(_pair, interval) if buy and not sell: pair = _pair break else: return False # Calculate amount buy_limit = self.get_target_bid(exchange.get_ticker(pair)) amount = stake_amount / buy_limit order_id = exchange.buy(pair, buy_limit, amount) stake_amount_fiat = self.fiat_converter.convert_amount( stake_amount, self.config['stake_currency'], self.config['fiat_display_currency'] ) # Create trade entity and return self.rpc.send_msg( '*{}:* Buying [{}]({}) with limit `{:.8f} ({:.6f} {}, {:.3f} {})` ' .format( exchange.get_name().upper(), pair.replace('_', '/'), exchange.get_pair_detail_url(pair), buy_limit, stake_amount, self.config['stake_currency'], stake_amount_fiat, self.config['fiat_display_currency'] ) ) # Fee is applied twice because we make a LIMIT_BUY and LIMIT_SELL trade = Trade( pair=pair, stake_amount=stake_amount, amount=amount, fee=exchange.get_fee(), open_rate=buy_limit, open_date=datetime.utcnow(), exchange=exchange.get_name().upper(), open_order_id=order_id ) Trade.session.add(trade) Trade.session.flush() return True def process_maybe_execute_buy(self) -> bool: """ Tries to execute a buy trade in a safe way :return: True if executed """ try: # Create entity and execute trade if self.create_trade(): return True logger.info('Found no buy signals for whitelisted currencies. Trying again..') return False except DependencyException as exception: logger.warning('Unable to create trade: %s', exception) return False def process_maybe_execute_sell(self, trade: Trade) -> bool: """ Tries to execute a sell trade :return: True if executed """ # Get order details for actual price per unit if trade.open_order_id: # Update trade with order values logger.info('Found open order for %s', trade) trade.update(exchange.get_order(trade.open_order_id)) if trade.is_open and trade.open_order_id is None: # Check if we can sell our current pair return self.handle_trade(trade) return False def handle_trade(self, trade: Trade) -> bool: """ Sells the current pair if the threshold is reached and updates the trade record. :return: True if trade has been sold, False otherwise """ if not trade.is_open: raise ValueError('attempt to handle closed trade: {}'.format(trade)) logger.debug('Handling %s ...', trade) current_rate = exchange.get_ticker(trade.pair)['bid'] (buy, sell) = (False, False) if self.config.get('experimental', {}).get('use_sell_signal'): (buy, sell) = self.analyze.get_signal(trade.pair, self.analyze.get_ticker_interval()) if self.analyze.should_sell(trade, current_rate, datetime.utcnow(), buy, sell): self.execute_sell(trade, current_rate) return True logger.info('Found no sell signals for whitelisted currencies. Trying again..') return False def check_handle_timedout(self, timeoutvalue: int) -> None: """ Check if any orders are timed out and cancel if neccessary :param timeoutvalue: Number of minutes until order is considered timed out :return: None """ timeoutthreashold = arrow.utcnow().shift(minutes=-timeoutvalue).datetime for trade in Trade.query.filter(Trade.open_order_id.isnot(None)).all(): try: order = exchange.get_order(trade.open_order_id) except requests.exceptions.RequestException: logger.info( 'Cannot query order for %s due to %s', trade, traceback.format_exc()) continue ordertime = arrow.get(order['opened']) # Check if trade is still actually open if int(order['remaining']) == 0: continue if order['type'] == "LIMIT_BUY" and ordertime < timeoutthreashold: self.handle_timedout_limit_buy(trade, order) elif order['type'] == "LIMIT_SELL" and ordertime < timeoutthreashold: self.handle_timedout_limit_sell(trade, order) # FIX: 20180110, why is cancel.order unconditionally here, whereas # it is conditionally called in the # handle_timedout_limit_sell()? def handle_timedout_limit_buy(self, trade: Trade, order: Dict) -> bool: """Buy timeout - cancel order :return: True if order was fully cancelled """ exchange.cancel_order(trade.open_order_id) if order['remaining'] == order['amount']: # if trade is not partially completed, just delete the trade Trade.session.delete(trade) # FIX? do we really need to flush, caller of # check_handle_timedout will flush afterwards Trade.session.flush() logger.info('Buy order timeout for %s.', trade) self.rpc.send_msg('*Timeout:* Unfilled buy order for {} cancelled'.format( trade.pair.replace('_', '/'))) return True # if trade is partially complete, edit the stake details for the trade # and close the order trade.amount = order['amount'] - order['remaining'] trade.stake_amount = trade.amount * trade.open_rate trade.open_order_id = None logger.info('Partial buy order timeout for %s.', trade) self.rpc.send_msg('*Timeout:* Remaining buy order for {} cancelled'.format( trade.pair.replace('_', '/'))) return False # FIX: 20180110, should cancel_order() be cond. or unconditionally called? def handle_timedout_limit_sell(self, trade: Trade, order: Dict) -> bool: """ Sell timeout - cancel order and update trade :return: True if order was fully cancelled """ if order['remaining'] == order['amount']: # if trade is not partially completed, just cancel the trade exchange.cancel_order(trade.open_order_id) trade.close_rate = None trade.close_profit = None trade.close_date = None trade.is_open = True trade.open_order_id = None self.rpc.send_msg('*Timeout:* Unfilled sell order for {} cancelled'.format( trade.pair.replace('_', '/'))) logger.info('Sell order timeout for %s.', trade) return True # TODO: figure out how to handle partially complete sell orders return False def execute_sell(self, trade: Trade, limit: float) -> None: """ Executes a limit sell for the given trade and limit :param trade: Trade instance :param limit: limit rate for the sell order :return: None """ # Execute sell and update trade record # check if we have these funds first try: order_id = exchange.sell(str(trade.pair), limit, trade.amount) trade.open_order_id = order_id fmt_exp_profit = round(trade.calc_profit_percent(rate=limit) * 100, 2) profit_trade = trade.calc_profit(rate=limit) current_rate = exchange.get_ticker(trade.pair, False)['bid'] profit = trade.calc_profit_percent(current_rate) message = "*{exchange}:* Selling\n" \ "*Current Pair:* [{pair}]({pair_url})\n" \ "*Limit:* `{limit}`\n" \ "*Amount:* `{amount}`\n" \ "*Open Rate:* `{open_rate:.8f}`\n" \ "*Current Rate:* `{current_rate:.8f}`\n" \ "*Profit:* `{profit:.2f}%`" \ "".format( exchange=trade.exchange, pair=trade.pair, pair_url=exchange.get_pair_detail_url(trade.pair), limit=limit, open_rate=trade.open_rate, current_rate=current_rate, amount=round(trade.amount, 8), profit=round(profit * 100, 2), ) # For regular case, when the configuration exists if 'stake_currency' in self.config and 'fiat_display_currency' in self.config: fiat_converter = CryptoToFiatConverter() profit_fiat = fiat_converter.convert_amount( profit_trade, self.config['stake_currency'], self.config['fiat_display_currency'] ) message += '` ({gain}: {profit_percent:.2f}%, {profit_coin:.8f} {coin}`' \ '` / {profit_fiat:.3f} {fiat})`' \ ''.format( gain="profit" if fmt_exp_profit > 0 else "loss", profit_percent=fmt_exp_profit, profit_coin=profit_trade, coin=self.config['stake_currency'], profit_fiat=profit_fiat, fiat=self.config['fiat_display_currency'], ) # Because telegram._forcesell does not have the configuration # Ignore the FIAT value and does not show the stake_currency as well else: message += '` ({gain}: {profit_percent:.2f}%, {profit_coin:.8f})`'.format( gain="profit" if fmt_exp_profit > 0 else "loss", profit_percent=fmt_exp_profit, profit_coin=profit_trade ) # Send the message self.rpc.send_msg(message) Trade.session.flush() except NotEnoughFundsExeption: logger.warning('Sell order failed, due to not having enough funds for %s.', trade)