import argparse import enum import json import logging import time import os import re from typing import Any, Callable, Dict, List from jsonschema import Draft4Validator, validate from jsonschema.exceptions import ValidationError, best_match from wrapt import synchronized from freqtrade import __version__ logger = logging.getLogger(__name__) def file_dump_json(filename, data): with open(filename, 'w') as fp: json.dump(data, fp) class State(enum.Enum): RUNNING = 0 STOPPED = 1 # Current application state _STATE = State.STOPPED @synchronized def update_state(state: State) -> None: """ Updates the application state :param state: new state :return: None """ global _STATE _STATE = state @synchronized def get_state() -> State: """ Gets the current application state :return: """ return _STATE def load_config(path: str) -> Dict: """ Loads a config file from the given path :param path: path as str :return: configuration as dictionary """ with open(path) as file: conf = json.load(file) if 'internals' not in conf: conf['internals'] = {} logger.info('Validating configuration ...') try: validate(conf, CONF_SCHEMA) return conf except ValidationError as exception: logger.fatal('Invalid configuration. See config.json.example. Reason: %s', exception) raise ValidationError( best_match(Draft4Validator(CONF_SCHEMA).iter_errors(conf)).message ) def throttle(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 common_args_parser(description: str): """ Parses given common arguments and returns them as a parsed object. """ parser = argparse.ArgumentParser( description=description ) parser.add_argument( '-v', '--verbose', help='be verbose', action='store_const', dest='loglevel', const=logging.DEBUG, default=logging.INFO, ) parser.add_argument( '--version', action='version', version='%(prog)s {}'.format(__version__), ) parser.add_argument( '-c', '--config', help='specify configuration file (default: config.json)', dest='config', default='config.json', type=str, metavar='PATH', ) parser.add_argument( '--datadir', help='path to backtest data (default freqdata/tests/testdata)', dest='datadir', default=os.path.join('freqtrade', 'tests', 'testdata'), type=str, metavar='PATH', ) return parser def parse_args(args: List[str], description: str): """ Parses given arguments and returns an argparse Namespace instance. Returns None if a sub command has been selected and executed. """ parser = common_args_parser(description) parser.add_argument( '--dry-run-db', help='Force dry run to use a local DB "tradesv3.dry_run.sqlite" \ instead of memory DB. Work only if dry_run is enabled.', action='store_true', dest='dry_run_db', ) parser.add_argument( '--dynamic-whitelist', help='dynamically generate and update whitelist \ based on 24h BaseVolume (Default 20 currencies)', # noqa dest='dynamic_whitelist', const=20, type=int, metavar='INT', nargs='?', ) build_subcommands(parser) return parser.parse_args(args) def backtesting_options(parser: argparse.ArgumentParser) -> None: parser.add_argument( '-l', '--live', action='store_true', dest='live', help='using live data', ) parser.add_argument( '-i', '--ticker-interval', help='specify ticker interval in minutes (default: 5)', dest='ticker_interval', default=5, type=int, metavar='INT', ) parser.add_argument( '--realistic-simulation', help='uses max_open_trades from config to simulate real world limitations', action='store_true', dest='realistic_simulation', ) parser.add_argument( '-r', '--refresh-pairs-cached', help='refresh the pairs files in tests/testdata with the latest data from Bittrex. \ Use it if you want to run your backtesting with up-to-date data.', action='store_true', dest='refresh_pairs', ) parser.add_argument( '--timerange', help='Specify what timerange of data to use.', default=None, type=str, dest='timerange', ) def hyperopt_options(parser: argparse.ArgumentParser) -> None: parser.add_argument( '-e', '--epochs', help='specify number of epochs (default: 100)', dest='epochs', default=100, type=int, metavar='INT', ) parser.add_argument( '--use-mongodb', help='parallelize evaluations with mongodb (requires mongod in PATH)', dest='mongodb', action='store_true', ) parser.add_argument( '-i', '--ticker-interval', help='specify ticker interval in minutes (default: 5)', dest='ticker_interval', default=5, type=int, metavar='INT', ) parser.add_argument( '--timerange', help='Specify what timerange of data to use.', default=None, type=str, dest='timerange', ) def parse_timerange(text): if text is None: return None syntax = [('^-(\d{8})$', (None, 'date')), ('^(\d{8})-$', ('date', None)), ('^(\d{8})-(\d{8})$', ('date', 'date')), ('^(-\d+)$', (None, 'line')), ('^(\d+)-$', ('line', None)), ('^(\d+)-(\d+)$', ('index', 'index'))] for rex, stype in syntax: # Apply the regular expression to text m = re.match(rex, text) if m: # Regex has matched rvals = m.groups() n = 0 start = None stop = None if stype[0]: start = rvals[n] if stype[0] != 'date': start = int(start) n += 1 if stype[1]: stop = rvals[n] if stype[1] != 'date': stop = int(stop) return (stype, start, stop) raise Exception('Incorrect syntax for timerange "%s"' % text) def build_subcommands(parser: argparse.ArgumentParser) -> None: """ Builds and attaches all subcommands """ from freqtrade.optimize import backtesting, hyperopt subparsers = parser.add_subparsers(dest='subparser') # Add backtesting subcommand backtesting_cmd = subparsers.add_parser('backtesting', help='backtesting module') backtesting_cmd.set_defaults(func=backtesting.start) backtesting_options(backtesting_cmd) # Add hyperopt subcommand hyperopt_cmd = subparsers.add_parser('hyperopt', help='hyperopt module') hyperopt_cmd.set_defaults(func=hyperopt.start) hyperopt_options(hyperopt_cmd) # Required json-schema for user specified config CONF_SCHEMA = { 'type': 'object', 'properties': { 'max_open_trades': {'type': 'integer', 'minimum': 1}, 'stake_currency': {'type': 'string', 'enum': ['BTC', 'ETH', 'USDT']}, 'stake_amount': {'type': 'number', 'minimum': 0.0005}, 'fiat_display_currency': {'type': 'string', 'enum': ['AUD', 'BRL', 'CAD', 'CHF', 'CLP', 'CNY', 'CZK', 'DKK', 'EUR', 'GBP', 'HKD', 'HUF', 'IDR', 'ILS', 'INR', 'JPY', 'KRW', 'MXN', 'MYR', 'NOK', 'NZD', 'PHP', 'PKR', 'PLN', 'RUB', 'SEK', 'SGD', 'THB', 'TRY', 'TWD', 'ZAR', 'USD']}, 'dry_run': {'type': 'boolean'}, 'minimal_roi': { 'type': 'object', 'patternProperties': { '^[0-9.]+$': {'type': 'number'} }, 'minProperties': 1 }, 'stoploss': {'type': 'number', 'maximum': 0, 'exclusiveMaximum': True}, 'unfilledtimeout': {'type': 'integer', 'minimum': 0}, 'bid_strategy': { 'type': 'object', 'properties': { 'ask_last_balance': { 'type': 'number', 'minimum': 0, 'maximum': 1, 'exclusiveMaximum': False }, }, 'required': ['ask_last_balance'] }, 'exchange': {'$ref': '#/definitions/exchange'}, 'experimental': { 'type': 'object', 'properties': { 'use_sell_signal': {'type': 'boolean'}, 'sell_profit_only': {'type': 'boolean'} } }, 'telegram': { 'type': 'object', 'properties': { 'enabled': {'type': 'boolean'}, 'token': {'type': 'string'}, 'chat_id': {'type': 'string'}, }, 'required': ['enabled', 'token', 'chat_id'] }, 'initial_state': {'type': 'string', 'enum': ['running', 'stopped']}, 'internals': { 'type': 'object', 'properties': { 'process_throttle_secs': {'type': 'number'} } } }, 'definitions': { 'exchange': { 'type': 'object', 'properties': { 'name': {'type': 'string'}, 'key': {'type': 'string'}, 'secret': {'type': 'string'}, 'pair_whitelist': { 'type': 'array', 'items': { 'type': 'string', 'pattern': '^[0-9A-Z]+_[0-9A-Z]+$' }, 'uniqueItems': True }, 'pair_blacklist': { 'type': 'array', 'items': { 'type': 'string', 'pattern': '^[0-9A-Z]+_[0-9A-Z]+$' }, 'uniqueItems': True } }, 'required': ['name', 'key', 'secret', 'pair_whitelist'] } }, 'anyOf': [ {'required': ['exchange']} ], 'required': [ 'max_open_trades', 'stake_currency', 'stake_amount', 'fiat_display_currency', 'dry_run', 'minimal_roi', 'bid_strategy', 'telegram' ] }