use jsonschema instead of custom type validations

This commit is contained in:
gcarq 2017-09-02 01:10:21 +02:00
parent 6f05648087
commit e3eaad07b1
2 changed files with 64 additions and 83 deletions

View File

@ -11,4 +11,5 @@ matplotlib==2.0.2
PYQT5==5.9
scikit-learn==0.19.0
scipy==0.19.1
stockstats==0.2.0
stockstats==0.2.0
jsonschema==2.6.0

144
utils.py
View File

@ -1,102 +1,82 @@
import json
import logging
from typing import List
from jsonschema import validate
from wrapt import synchronized
from bittrex.bittrex import Bittrex
logger = logging.getLogger(__name__)
_cur_conf = None
# Required json-schema for user specified config
_conf_schema = {
'type': 'object',
'properties': {
'max_open_trades': {'type': 'integer'},
'stake_currency': {'type': 'string'},
'stake_amount': {'type': 'number'},
'dry_run': {'type': 'boolean'},
'minimal_roi': {
'type': 'object',
'patternProperties': {
'^[0-9.]+$': {'type': 'number'}
},
'minProperties': 1
},
'poloniex': {'$ref': '#/definitions/exchange'},
'bittrex': {'$ref': '#/definitions/exchange'},
'telegram': {
'type': 'object',
'properties': {
'enabled': {'type': 'boolean'},
'token': {'type': 'string'},
'chat_id': {'type': 'string'},
},
'required': ['enabled', 'token', 'chat_id']
}
},
'definitions': {
'exchange': {
'type': 'object',
'properties': {
'enabled': {'type': 'boolean'},
'key': {'type': 'string'},
'secret': {'type': 'string'},
'pair_whitelist': {
'type': 'array',
'items': {'type': 'string'},
'uniqueItems': True
}
},
'required': ['enabled', 'key', 'secret', 'pair_whitelist']
}
},
'anyOf': [
{'required': ['poloniex']},
{'required': ['bittrex']}
],
'required': [
'max_open_trades',
'stake_currency',
'stake_amount',
'dry_run',
'minimal_roi',
'telegram'
]
}
@synchronized
def get_conf(filename: str='config.json') -> dict:
"""
Loads the config into memory and returns the instance of it
Loads the config into memory validates it
and returns the singleton instance
:return: dict
"""
global _cur_conf
if not _cur_conf:
with open(filename) as file:
_cur_conf = json.load(file)
validate_conf(_cur_conf)
validate(_cur_conf, _conf_schema)
return _cur_conf
def validate_conf(conf: dict) -> None:
"""
Validates if the minimal possible config is provided
:param conf: config as dict
:return: None, raises ValueError if something is wrong
"""
if not isinstance(conf.get('max_open_trades'), int):
raise ValueError('max_open_trades must be a int')
if not isinstance(conf.get('stake_currency'), str):
raise ValueError('stake_currency must be a str')
if not isinstance(conf.get('stake_amount'), float):
raise ValueError('stake_amount must be a float')
if not isinstance(conf.get('dry_run'), bool):
raise ValueError('dry_run must be a boolean')
if not isinstance(conf.get('minimal_roi'), dict):
raise ValueError('minimal_roi must be a dict')
for index, (minutes, threshold) in enumerate(conf.get('minimal_roi').items()):
if not isinstance(minutes, str):
raise ValueError('minimal_roi[{}].key must be a string'.format(index))
if not isinstance(threshold, float):
raise ValueError('minimal_roi[{}].value must be a float'.format(index))
if conf.get('telegram'):
telegram = conf.get('telegram')
if not isinstance(telegram.get('token'), str):
raise ValueError('telegram.token must be a string')
if not isinstance(telegram.get('chat_id'), str):
raise ValueError('telegram.chat_id must be a string')
if conf.get('poloniex'):
poloniex = conf.get('poloniex')
if not isinstance(poloniex.get('key'), str):
raise ValueError('poloniex.key must be a string')
if not isinstance(poloniex.get('secret'), str):
raise ValueError('poloniex.secret must be a string')
if not isinstance(poloniex.get('pair_whitelist'), list):
raise ValueError('poloniex.pair_whitelist must be a list')
if poloniex.get('enabled', False):
raise ValueError('poloniex is currently not implemented')
#if not poloniex.get('pair_whitelist'):
# raise ValueError('poloniex.pair_whitelist must contain some pairs')
if conf.get('bittrex'):
bittrex = conf.get('bittrex')
if not isinstance(bittrex.get('key'), str):
raise ValueError('bittrex.key must be a string')
if not isinstance(bittrex.get('secret'), str):
raise ValueError('bittrex.secret must be a string')
if not isinstance(bittrex.get('pair_whitelist'), list):
raise ValueError('bittrex.pair_whitelist must be a list')
if bittrex.get('enabled', False):
if not bittrex.get('pair_whitelist'):
raise ValueError('bittrex.pair_whitelist must contain some pairs')
validate_bittrex_pairs(bittrex.get('pair_whitelist'))
if conf.get('poloniex', {}).get('enabled', False) \
and conf.get('bittrex', {}).get('enabled', False):
raise ValueError('Cannot use poloniex and bittrex at the same time')
logger.info('Config is valid ...')
def validate_bittrex_pairs(pairs: List[str]) -> None:
"""
Validates if all given pairs exist on bittrex
:param pairs: list of str
:return: None
"""
data = Bittrex(None, None).get_markets()
if not data['success']:
raise RuntimeError('BITTREX: {}'.format(data['message']))
available_markets = [market['MarketName'].replace('-', '_')for market in data['result']]
for pair in pairs:
if pair not in available_markets:
raise ValueError('Invalid pair: {}'.format(pair))