hroff-1902
7 years ago
parent
7763b4cf5b
commit
1bdffcc73b
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from freqtrade.configuration.arguments import Arguments, TimeRange # noqa: F401
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from freqtrade.configuration.arguments import ( # noqa: F401
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ARGS_DOWNLOADER,
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ARGS_PLOT_DATAFRAME,
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ARGS_PLOT_PROFIT)
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from freqtrade.configuration.configuration import Configuration # noqa: F401
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import logging
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from typing import Any, Dict
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from freqtrade import OperationalException
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from freqtrade.exchange import (is_exchange_bad, is_exchange_available,
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is_exchange_officially_supported, available_exchanges)
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logger = logging.getLogger(__name__)
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def check_exchange(config: Dict[str, Any], 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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logger.info("Checking exchange...")
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exchange = config.get('exchange', {}).get('name').lower()
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if not is_exchange_available(exchange):
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raise OperationalException(
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f'Exchange "{exchange}" is not supported by ccxt '
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f'and therefore not available for the bot.\n'
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f'The following exchanges are supported by ccxt: '
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f'{", ".join(available_exchanges())}'
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)
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if check_for_bad and is_exchange_bad(exchange):
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logger.warning(f'Exchange "{exchange}" is known to not work with the bot yet. '
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f'Use it only for development and testing purposes.')
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return False
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if is_exchange_officially_supported(exchange):
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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 supported by ccxt '
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f'and therefore 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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@ -0,0 +1,53 @@
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import logging
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from typing import Any, Dict
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from jsonschema import Draft4Validator, validators
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from jsonschema.exceptions import ValidationError, best_match
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from freqtrade import constants
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logger = logging.getLogger(__name__)
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def _extend_validator(validator_class):
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"""
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Extended validator for the Freqtrade configuration JSON Schema.
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Currently it only handles defaults for subschemas.
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"""
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validate_properties = validator_class.VALIDATORS['properties']
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def set_defaults(validator, properties, instance, schema):
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for prop, subschema in properties.items():
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if 'default' in subschema:
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instance.setdefault(prop, subschema['default'])
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for error in validate_properties(
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validator, properties, instance, schema,
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):
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yield error
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return validators.extend(
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validator_class, {'properties': set_defaults}
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)
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FreqtradeValidator = _extend_validator(Draft4Validator)
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def validate_config_schema(conf: Dict[str, Any]) -> Dict[str, Any]:
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"""
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Validate the configuration follow the Config Schema
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:param conf: Config in JSON format
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:return: Returns the config if valid, otherwise throw an exception
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"""
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try:
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FreqtradeValidator(constants.CONF_SCHEMA).validate(conf)
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return conf
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except ValidationError as e:
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logger.critical(
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f"Invalid configuration. See config.json.example. Reason: {e}"
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)
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raise ValidationError(
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best_match(Draft4Validator(constants.CONF_SCHEMA).iter_errors(conf)).message
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)
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