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Add prepend option to download-data

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This commit is contained in:
Matthias
2022-04-30 17:24:57 +02:00
parent 11d447cd5a
commit f6a7e6b785
7 changed files with 49 additions and 14 deletions
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23
freqtrade/data/history/history_utils.py
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@@ -172,7 +172,6 @@ def _load_cached_data_for_updating(
end = data.iloc[0]['date']
else:
start = data.iloc[-1]['date']
start_ms = int(start.timestamp() * 1000) if start else None
end_ms = int(end.timestamp() * 1000) if end else None
return data, start_ms, end_ms
@@ -188,6 +187,7 @@ def _download_pair_history(pair: str, *,
timerange: Optional[TimeRange] = None,
candle_type: CandleType,
erase: bool = False,
prepend: bool = False,
) -> bool:
"""
Download latest candles from the exchange for the pair and timeframe passed in parameters
@@ -195,8 +195,6 @@ def _download_pair_history(pair: str, *,
exists in a cache. If timerange starts earlier than the data in the cache,
the full data will be redownloaded
Based on @Rybolov work: https://github.com/rybolov/freqtrade-data
:param pair: pair to download
:param timeframe: Timeframe (e.g "5m")
:param timerange: range of time to download
@@ -211,17 +209,17 @@ def _download_pair_history(pair: str, *,
if data_handler.ohlcv_purge(pair, timeframe, candle_type=candle_type):
logger.info(f'Deleting existing data for pair {pair}, {timeframe}, {candle_type}.')
logger.info(
f'Download history data for pair: "{pair}" ({process}), timeframe: {timeframe}, '
f'candle type: {candle_type} and store in {datadir}.'
)
data, since_ms, until_ms = _load_cached_data_for_updating(
pair, timeframe, timerange,
data_handler=data_handler,
candle_type=candle_type,
prepend=False)
# TODO: Prepend should come from a param
prepend=prepend)
logger.info(f'Download history data for "{pair}" ({process}), timeframe: {timeframe}, '
f'candle type: {candle_type} and store in {datadir}.'
f'From {format_ms_time(since_ms) if since_ms else "start"} to '
f'{format_ms_time(until_ms) if until_ms else "now"}'
)
logger.debug("Current Start: %s",
f"{data.iloc[0]['date']:%Y-%m-%d %H:%M:%S}" if not data.empty else 'None')
@@ -269,6 +267,7 @@ def refresh_backtest_ohlcv_data(exchange: Exchange, pairs: List[str], timeframes
timerange: Optional[TimeRange] = None,
new_pairs_days: int = 30, erase: bool = False,
data_format: str = None,
prepend: bool = False,
) -> List[str]:
"""
Refresh stored ohlcv data for backtesting and hyperopt operations.
@@ -292,7 +291,7 @@ def refresh_backtest_ohlcv_data(exchange: Exchange, pairs: List[str], timeframes
timerange=timerange, data_handler=data_handler,
timeframe=str(timeframe), new_pairs_days=new_pairs_days,
candle_type=candle_type,
erase=erase)
erase=erase, prepend=prepend)
if trading_mode == 'futures':
# Predefined candletype (and timeframe) depending on exchange
# Downloads what is necessary to backtest based on futures data.
@@ -306,7 +305,7 @@ def refresh_backtest_ohlcv_data(exchange: Exchange, pairs: List[str], timeframes
timerange=timerange, data_handler=data_handler,
timeframe=str(tf_mark), new_pairs_days=new_pairs_days,
candle_type=funding_candle_type,
erase=erase)
erase=erase, prepend=prepend)
return pairs_not_available