66 lines
2.9 KiB
Python
66 lines
2.9 KiB
Python
import logging
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from freqtrade.constants import Config
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from freqtrade.enums import RunMode
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from freqtrade.exceptions import OperationalException
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from freqtrade.exchange import available_exchanges, is_exchange_known_ccxt, validate_exchange
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from freqtrade.exchange.common import MAP_EXCHANGE_CHILDCLASS, SUPPORTED_EXCHANGES
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logger = logging.getLogger(__name__)
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def check_exchange(config: Config, check_for_bad: bool = True) -> bool:
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"""
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Check if the exchange name in the config file is supported by Freqtrade
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:param check_for_bad: if True, check the exchange against the list of known 'bad'
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exchanges
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:return: False if exchange is 'bad', i.e. is known to work with the bot with
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critical issues or does not work at all, crashes, etc. True otherwise.
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raises an exception if the exchange if not supported by ccxt
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and thus is not known for the Freqtrade at all.
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"""
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if (config['runmode'] in [RunMode.PLOT, RunMode.UTIL_NO_EXCHANGE, RunMode.OTHER]
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and not config.get('exchange', {}).get('name')):
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# Skip checking exchange in plot mode, since it requires no exchange
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return True
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logger.info("Checking exchange...")
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exchange = config.get('exchange', {}).get('name', '').lower()
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if not exchange:
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raise OperationalException(
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f'This command requires a configured exchange. You should either use '
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f'`--exchange <exchange_name>` or specify a configuration file via `--config`.\n'
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f'The following exchanges are available for Freqtrade: '
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f'{", ".join(available_exchanges())}'
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)
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if not is_exchange_known_ccxt(exchange):
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raise OperationalException(
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f'Exchange "{exchange}" is not known to the ccxt library '
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f'and therefore not available for the bot.\n'
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f'The following exchanges are available for Freqtrade: '
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f'{", ".join(available_exchanges())}'
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)
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valid, reason = validate_exchange(exchange)
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if not valid:
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if check_for_bad:
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raise OperationalException(f'Exchange "{exchange}" will not work with Freqtrade. '
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f'Reason: {reason}')
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else:
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logger.warning(f'Exchange "{exchange}" will not work with Freqtrade. Reason: {reason}')
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if MAP_EXCHANGE_CHILDCLASS.get(exchange, exchange) in SUPPORTED_EXCHANGES:
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logger.info(f'Exchange "{exchange}" is officially supported '
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f'by the Freqtrade development team.')
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else:
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logger.warning(f'Exchange "{exchange}" is known to the the ccxt library, '
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f'available for the bot, but not officially supported '
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f'by the Freqtrade development team. '
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f'It may work flawlessly (please report back) or have serious issues. '
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f'Use it at your own discretion.')
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return True
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