""" This module contains the configuration class """ import json import logging import sys from argparse import Namespace from typing import Any, Callable, Dict, Optional from freqtrade import OperationalException, constants from freqtrade.configuration.check_exchange import check_exchange from freqtrade.configuration.create_datadir import create_datadir from freqtrade.configuration.json_schema import validate_config_schema from freqtrade.loggers import setup_logging from freqtrade.misc import deep_merge_dicts from freqtrade.state import RunMode logger = logging.getLogger(__name__) class Configuration(object): """ Class to read and init the bot configuration Reuse this class for the bot, backtesting, hyperopt and every script that required configuration """ def __init__(self, args: Namespace, runmode: RunMode = None) -> None: self.args = args self.config: Optional[Dict[str, Any]] = None self.runmode = runmode def get_config(self) -> Dict[str, Any]: """ Return the config. Use this method to get the bot config :return: Dict: Bot config """ if self.config is None: self.config = self.load_config() return self.config def _load_config_files(self) -> Dict[str, Any]: """ Iterate through the config files passed in the args, loading all of them and merging their contents. """ config: Dict[str, Any] = {} # We expect here a list of config filenames for path in self.args.config: logger.info('Using config: %s ...', path) # Merge config options, overwriting old values config = deep_merge_dicts(self._load_config_file(path), config) return config def _load_config_file(self, path: str) -> Dict[str, Any]: """ Loads a config file from the given path :param path: path as str :return: configuration as dictionary """ try: # Read config from stdin if requested in the options with open(path) if path != '-' else sys.stdin as file: config = json.load(file) except FileNotFoundError: raise OperationalException( f'Config file "{path}" not found!' ' Please create a config file or check whether it exists.') return config def _normalize_config(self, config: Dict[str, Any]) -> None: """ Make config more canonical -- i.e. for example add missing parts that we expect to be normally in it... """ if 'internals' not in config: config['internals'] = {} def load_config(self) -> Dict[str, Any]: """ Extract information for sys.argv and load the bot configuration :return: Configuration dictionary """ # Load all configs config: Dict[str, Any] = self._load_config_files() # Make resulting config more canonical self._normalize_config(config) logger.info('Validating configuration ...') validate_config_schema(config) self._validate_config_consistency(config) self._process_common_options(config) self._process_optimize_options(config) self._process_plot_options(config) self._process_runmode(config) return config def _process_logging_options(self, config: Dict[str, Any]) -> None: """ Extract information for sys.argv and load logging configuration: the -v/--verbose, --logfile options """ # Log level if 'verbosity' in self.args and self.args.verbosity: config.update({'verbosity': self.args.verbosity}) else: config.update({'verbosity': 0}) if 'logfile' in self.args and self.args.logfile: config.update({'logfile': self.args.logfile}) setup_logging(config) def _process_strategy_options(self, config: Dict[str, Any]) -> None: # Set strategy if not specified in config and or if it's non default if self.args.strategy != constants.DEFAULT_STRATEGY or not config.get('strategy'): config.update({'strategy': self.args.strategy}) if self.args.strategy_path: config.update({'strategy_path': self.args.strategy_path}) def _process_common_options(self, config: Dict[str, Any]) -> None: self._process_logging_options(config) self._process_strategy_options(config) # Add dynamic_whitelist if found if 'dynamic_whitelist' in self.args and self.args.dynamic_whitelist: # Update to volumePairList (the previous default) config['pairlist'] = {'method': 'VolumePairList', 'config': {'number_assets': self.args.dynamic_whitelist} } logger.warning( 'Parameter --dynamic-whitelist has been deprecated, ' 'and will be completely replaced by the whitelist dict in the future. ' 'For now: using dynamically generated whitelist based on VolumePairList. ' '(not applicable with Backtesting and Hyperopt)' ) if ('db_url' in self.args and self.args.db_url and self.args.db_url != constants.DEFAULT_DB_PROD_URL): config.update({'db_url': self.args.db_url}) logger.info('Parameter --db-url detected ...') if config.get('dry_run', False): logger.info('Dry run is enabled') if config.get('db_url') in [None, constants.DEFAULT_DB_PROD_URL]: # Default to in-memory db for dry_run if not specified config['db_url'] = constants.DEFAULT_DB_DRYRUN_URL else: if not config.get('db_url', None): config['db_url'] = constants.DEFAULT_DB_PROD_URL logger.info('Dry run is disabled') logger.info(f'Using DB: "{config["db_url"]}"') if config.get('forcebuy_enable', False): logger.warning('`forcebuy` RPC message enabled.') # Setting max_open_trades to infinite if -1 if config.get('max_open_trades') == -1: config['max_open_trades'] = float('inf') # Support for sd_notify if 'sd_notify' in self.args and self.args.sd_notify: config['internals'].update({'sd_notify': True}) # Check if the exchange set by the user is supported check_exchange(config) def _process_datadir_options(self, config: Dict[str, Any]) -> None: """ Extract information for sys.argv and load datadir configuration: the --datadir option """ if 'datadir' in self.args and self.args.datadir: config.update({'datadir': create_datadir(config, self.args.datadir)}) else: config.update({'datadir': create_datadir(config, None)}) logger.info('Using data directory: %s ...', config.get('datadir')) def _process_optimize_options(self, config: Dict[str, Any]) -> None: # This will override the strategy configuration self._args_to_config(config, argname='ticker_interval', logstring='Parameter -i/--ticker-interval detected ... ' 'Using ticker_interval: {} ...') self._args_to_config(config, argname='live', logstring='Parameter -l/--live detected ...') self._args_to_config(config, argname='position_stacking', logstring='Parameter --enable-position-stacking detected ...') if 'use_max_market_positions' in self.args and not self.args.use_max_market_positions: config.update({'use_max_market_positions': False}) logger.info('Parameter --disable-max-market-positions detected ...') logger.info('max_open_trades set to unlimited ...') elif 'max_open_trades' in self.args and self.args.max_open_trades: config.update({'max_open_trades': self.args.max_open_trades}) logger.info('Parameter --max_open_trades detected, ' 'overriding max_open_trades to: %s ...', config.get('max_open_trades')) else: logger.info('Using max_open_trades: %s ...', config.get('max_open_trades')) self._args_to_config(config, argname='stake_amount', logstring='Parameter --stake_amount detected, ' 'overriding stake_amount to: {} ...') self._args_to_config(config, argname='timerange', logstring='Parameter --timerange detected: {} ...') self._process_datadir_options(config) self._args_to_config(config, argname='refresh_pairs', logstring='Parameter -r/--refresh-pairs-cached detected ...') self._args_to_config(config, argname='strategy_list', logstring='Using strategy list of {} Strategies', logfun=len) self._args_to_config(config, argname='ticker_interval', logstring='Overriding ticker interval with Command line argument') self._args_to_config(config, argname='export', logstring='Parameter --export detected: {} ...') self._args_to_config(config, argname='exportfilename', logstring='Storing backtest results to {} ...') # Edge section: if 'stoploss_range' in self.args and self.args.stoploss_range: txt_range = eval(self.args.stoploss_range) config['edge'].update({'stoploss_range_min': txt_range[0]}) config['edge'].update({'stoploss_range_max': txt_range[1]}) config['edge'].update({'stoploss_range_step': txt_range[2]}) logger.info('Parameter --stoplosses detected: %s ...', self.args.stoploss_range) # Hyperopt section self._args_to_config(config, argname='hyperopt', logstring='Using Hyperopt file {}') self._args_to_config(config, argname='epochs', logstring='Parameter --epochs detected ... ' 'Will run Hyperopt with for {} epochs ...' ) self._args_to_config(config, argname='spaces', logstring='Parameter -s/--spaces detected: {}') self._args_to_config(config, argname='print_all', logstring='Parameter --print-all detected ...') self._args_to_config(config, argname='hyperopt_jobs', logstring='Parameter -j/--job-workers detected: {}') self._args_to_config(config, argname='hyperopt_random_state', logstring='Parameter --random-state detected: {}') self._args_to_config(config, argname='hyperopt_min_trades', logstring='Parameter --min-trades detected: {}') self._args_to_config(config, argname='hyperopt_continue', logstring='Hyperopt continue: {}') self._args_to_config(config, argname='hyperopt_loss', logstring='Using loss function: {}') def _process_plot_options(self, config: Dict[str, Any]) -> None: self._args_to_config(config, argname='pairs', logstring='Using pairs {}') self._args_to_config(config, argname='indicators1', logstring='Using indicators1: {}') self._args_to_config(config, argname='indicators2', logstring='Using indicators2: {}') self._args_to_config(config, argname='plot_limit', logstring='Limiting plot to: {}') self._args_to_config(config, argname='trade_source', logstring='Using trades from: {}') def _process_runmode(self, config: Dict[str, Any]) -> None: if not self.runmode: # Handle real mode, infer dry/live from config self.runmode = RunMode.DRY_RUN if config.get('dry_run', True) else RunMode.LIVE logger.info("Runmode set to {self.runmode}.") config.update({'runmode': self.runmode}) def _validate_config_consistency(self, conf: Dict[str, Any]) -> None: """ Validate the configuration consistency :param conf: Config in JSON format :return: Returns None if everything is ok, otherwise throw an OperationalException """ # validating trailing stoploss self._validate_trailing_stoploss(conf) def _validate_trailing_stoploss(self, conf: Dict[str, Any]) -> None: # Skip if trailing stoploss is not activated if not conf.get('trailing_stop', False): return tsl_positive = float(conf.get('trailing_stop_positive', 0)) tsl_offset = float(conf.get('trailing_stop_positive_offset', 0)) tsl_only_offset = conf.get('trailing_only_offset_is_reached', False) if tsl_only_offset: if tsl_positive == 0.0: raise OperationalException( f'The config trailing_only_offset_is_reached needs ' 'trailing_stop_positive_offset to be more than 0 in your config.') if tsl_positive > 0 and 0 < tsl_offset <= tsl_positive: raise OperationalException( f'The config trailing_stop_positive_offset needs ' 'to be greater than trailing_stop_positive_offset in your config.') def _args_to_config(self, config: Dict[str, Any], argname: str, logstring: str, logfun: Optional[Callable] = None) -> None: """ :param config: Configuration dictionary :param argname: Argumentname in self.args - will be copied to config dict. :param logstring: Logging String :param logfun: logfun is applied to the configuration entry before passing that entry to the log string using .format(). sample: logfun=len (prints the length of the found configuration instead of the content) """ if argname in self.args and getattr(self.args, argname): config.update({argname: getattr(self.args, argname)}) if logfun: logger.info(logstring.format(logfun(config[argname]))) else: logger.info(logstring.format(config[argname]))