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retry api calls few times before returning OperationalException

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This commit is contained in:
Samuel Husso 2018-02-10 18:00:24 +02:00
parent 2763076ab6
commit 4617a336e0
1 changed files with 23 additions and 2 deletions
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25
freqtrade/exchange/__init__.py
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@ -18,10 +18,29 @@ logger = logging.getLogger(__name__)
# Current selected exchange # Current selected exchange
_API: Exchange = None _API: Exchange = None
_CONF: dict = {} _CONF: dict = {}
API_RETRY_COUNT = 4
# Holds all open sell orders for dry_run # Holds all open sell orders for dry_run
_DRY_RUN_OPEN_ORDERS: Dict[str, Any] = {} _DRY_RUN_OPEN_ORDERS: Dict[str, Any] = {}
def retrier(f):
def wrapper(*args, **kwargs):
count = kwargs.pop('count', API_RETRY_COUNT)
try:
return f(*args, **kwargs)
# TODO dont be a gotta-catch-them-all pokemon collector
except Exception as ex:
logger.warn('%s returned exception: "%s"', f, ex)
if count > 0:
count -= 1
kwargs.update({'count': count})
logger.warn('retrying %s still for %s times', f, count)
return wrapper(*args, **kwargs)
else:
raise OperationalException('Giving up retrying: %s', f)
return wrapper
def init(config: dict) -> None: def init(config: dict) -> None:
""" """
@ -142,12 +161,14 @@ def get_balances():
return _API.fetch_balance() return _API.fetch_balance()
@cached(TTLCache(maxsize=100, ttl=30)) # @cached(TTLCache(maxsize=100, ttl=30))
@retrier
def get_ticker(pair: str, refresh: Optional[bool] = True) -> dict: def get_ticker(pair: str, refresh: Optional[bool] = True) -> dict:
return _API.fetch_ticker(pair) return _API.fetch_ticker(pair)
@cached(TTLCache(maxsize=100, ttl=30)) # @cached(TTLCache(maxsize=100, ttl=30))
@retrier
def get_ticker_history(pair: str, tick_interval) -> List[Dict]: def get_ticker_history(pair: str, tick_interval) -> List[Dict]:
# TODO: tickers need to be in format 1m,5m # TODO: tickers need to be in format 1m,5m
# fetch_ohlcv returns an [[datetime,o,h,l,c,v]] # fetch_ohlcv returns an [[datetime,o,h,l,c,v]]