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simplify refresh_tickers

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This commit is contained in:
Matthias 2018-12-29 13:07:22 +01:00
parent 646e98da55
commit 06ec106079
1 changed files with 7 additions and 11 deletions
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18
freqtrade/exchange/__init__.py
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@ -530,30 +530,26 @@ class Exchange(object):
logger.info("downloaded %s with length %s.", pair, len(data))
return data
def refresh_tickers(self, pair_list: List[str], ticker_interval: str) -> None:
def refresh_tickers(self, pair_list: List[str], ticker_interval: str) -> List[Tuple[str, List]]:
"""
Refresh tickers asyncronously and set `_klines` of this object with the result
Refresh ohlcv asyncronously and set `_klines` with the result
"""
logger.debug("Refreshing klines for %d pairs", len(pair_list))
asyncio.get_event_loop().run_until_complete(
self.async_get_candles_history(pair_list, ticker_interval))
async def async_get_candles_history(self, pairs: List[str],
tick_interval: str) -> List[Tuple[str, List]]:
"""Download ohlcv history for pair-list asyncronously """
# Calculating ticker interval in second
interval_in_sec = constants.TICKER_INTERVAL_MINUTES[tick_interval] * 60
interval_in_sec = constants.TICKER_INTERVAL_MINUTES[ticker_interval] * 60
input_coroutines = []
# Gather corotines to run
for pair in pairs:
for pair in pair_list:
if not (self._pairs_last_refresh_time.get(pair, 0) + interval_in_sec >=
arrow.utcnow().timestamp and pair in self._klines):
input_coroutines.append(self._async_get_candle_history(pair, tick_interval))
input_coroutines.append(self._async_get_candle_history(pair, ticker_interval))
else:
logger.debug("Using cached klines data for %s ...", pair)
tickers = await asyncio.gather(*input_coroutines, return_exceptions=True)
tickers = asyncio.get_event_loop().run_until_complete(
asyncio.gather(*input_coroutines, return_exceptions=True))
# handle caching
for res in tickers: