stable/freqtrade/rpc/rpc.py
2019-03-24 16:28:14 +01:00

474 lines
17 KiB
Python

"""
This module contains class to define a RPC communications
"""
import logging
from abc import abstractmethod
from datetime import timedelta, datetime, date
from decimal import Decimal
from enum import Enum
from typing import Dict, Any, List, Optional
import arrow
import sqlalchemy as sql
from numpy import mean, nan_to_num, NAN
from pandas import DataFrame
from freqtrade import TemporaryError, DependencyException
from freqtrade.misc import shorten_date
from freqtrade.persistence import Trade
from freqtrade.rpc.fiat_convert import CryptoToFiatConverter
from freqtrade.state import State
from freqtrade.strategy.interface import SellType
logger = logging.getLogger(__name__)
class RPCMessageType(Enum):
STATUS_NOTIFICATION = 'status'
WARNING_NOTIFICATION = 'warning'
CUSTOM_NOTIFICATION = 'custom'
BUY_NOTIFICATION = 'buy'
SELL_NOTIFICATION = 'sell'
def __repr__(self):
return self.value
class RPCException(Exception):
"""
Should be raised with a rpc-formatted message in an _rpc_* method
if the required state is wrong, i.e.:
raise RPCException('*Status:* `no active trade`')
"""
def __init__(self, message: str) -> None:
super().__init__(self)
self.message = message
def __str__(self):
return self.message
class RPC(object):
"""
RPC class can be used to have extra feature, like bot data, and access to DB data
"""
# Bind _fiat_converter if needed in each RPC handler
_fiat_converter: Optional[CryptoToFiatConverter] = None
def __init__(self, freqtrade) -> None:
"""
Initializes all enabled rpc modules
:param freqtrade: Instance of a freqtrade bot
:return: None
"""
self._freqtrade = freqtrade
@property
def name(self) -> str:
""" Returns the lowercase name of the implementation """
return self.__class__.__name__.lower()
@abstractmethod
def cleanup(self) -> None:
""" Cleanup pending module resources """
@abstractmethod
def send_msg(self, msg: Dict[str, str]) -> None:
""" Sends a message to all registered rpc modules """
def _rpc_trade_status(self) -> List[Dict[str, Any]]:
"""
Below follows the RPC backend it is prefixed with rpc_ to raise awareness that it is
a remotely exposed function
"""
# Fetch open trade
trades = Trade.get_open_trades()
if not trades:
raise RPCException('no active trade')
else:
results = []
for trade in trades:
order = None
if trade.open_order_id:
order = self._freqtrade.exchange.get_order(trade.open_order_id, trade.pair)
# calculate profit and send message to user
try:
current_rate = self._freqtrade.get_sell_rate(trade.pair, False)
except DependencyException:
current_rate = NAN
current_profit = trade.calc_profit_percent(current_rate)
fmt_close_profit = (f'{round(trade.close_profit * 100, 2):.2f}%'
if trade.close_profit else None)
results.append(dict(
trade_id=trade.id,
pair=trade.pair,
date=arrow.get(trade.open_date),
open_rate=trade.open_rate,
close_rate=trade.close_rate,
current_rate=current_rate,
amount=round(trade.amount, 8),
close_profit=fmt_close_profit,
current_profit=round(current_profit * 100, 2),
open_order='({} {} rem={:.8f})'.format(
order['type'], order['side'], order['remaining']
) if order else None,
))
return results
def _rpc_status_table(self) -> DataFrame:
trades = Trade.get_open_trades()
if not trades:
raise RPCException('no active order')
else:
trades_list = []
for trade in trades:
# calculate profit and send message to user
try:
current_rate = self._freqtrade.get_sell_rate(trade.pair, False)
except DependencyException:
current_rate = NAN
trade_perc = (100 * trade.calc_profit_percent(current_rate))
trades_list.append([
trade.id,
trade.pair,
shorten_date(arrow.get(trade.open_date).humanize(only_distance=True)),
f'{trade_perc:.2f}%'
])
columns = ['ID', 'Pair', 'Since', 'Profit']
df_statuses = DataFrame.from_records(trades_list, columns=columns)
df_statuses = df_statuses.set_index(columns[0])
return df_statuses
def _rpc_daily_profit(
self, timescale: int,
stake_currency: str, fiat_display_currency: str) -> List[List[Any]]:
today = datetime.utcnow().date()
profit_days: Dict[date, Dict] = {}
if not (isinstance(timescale, int) and timescale > 0):
raise RPCException('timescale must be an integer greater than 0')
for day in range(0, timescale):
profitday = today - timedelta(days=day)
trades = Trade.query \
.filter(Trade.is_open.is_(False)) \
.filter(Trade.close_date >= profitday)\
.filter(Trade.close_date < (profitday + timedelta(days=1)))\
.order_by(Trade.close_date)\
.all()
curdayprofit = sum(trade.calc_profit() for trade in trades)
profit_days[profitday] = {
'amount': f'{curdayprofit:.8f}',
'trades': len(trades)
}
return [
[
key,
'{value:.8f} {symbol}'.format(
value=float(value['amount']),
symbol=stake_currency
),
'{value:.3f} {symbol}'.format(
value=self._fiat_converter.convert_amount(
value['amount'],
stake_currency,
fiat_display_currency
) if self._fiat_converter else 0,
symbol=fiat_display_currency
),
'{value} trade{s}'.format(
value=value['trades'],
s='' if value['trades'] < 2 else 's'
),
]
for key, value in profit_days.items()
]
def _rpc_trade_statistics(
self, stake_currency: str, fiat_display_currency: str) -> Dict[str, Any]:
""" Returns cumulative profit statistics """
trades = Trade.query.order_by(Trade.id).all()
profit_all_coin = []
profit_all_percent = []
profit_closed_coin = []
profit_closed_percent = []
durations = []
for trade in trades:
current_rate: float = 0.0
if not trade.open_rate:
continue
if trade.close_date:
durations.append((trade.close_date - trade.open_date).total_seconds())
if not trade.is_open:
profit_percent = trade.calc_profit_percent()
profit_closed_coin.append(trade.calc_profit())
profit_closed_percent.append(profit_percent)
else:
# Get current rate
try:
current_rate = self._freqtrade.get_sell_rate(trade.pair, False)
except DependencyException:
current_rate = NAN
profit_percent = trade.calc_profit_percent(rate=current_rate)
profit_all_coin.append(
trade.calc_profit(rate=Decimal(trade.close_rate or current_rate))
)
profit_all_percent.append(profit_percent)
best_pair = Trade.session.query(
Trade.pair, sql.func.sum(Trade.close_profit).label('profit_sum')
).filter(Trade.is_open.is_(False)) \
.group_by(Trade.pair) \
.order_by(sql.text('profit_sum DESC')).first()
if not best_pair:
raise RPCException('no closed trade')
bp_pair, bp_rate = best_pair
# Prepare data to display
profit_closed_coin_sum = round(sum(profit_closed_coin), 8)
profit_closed_percent = round(nan_to_num(mean(profit_closed_percent)) * 100, 2)
profit_closed_fiat = self._fiat_converter.convert_amount(
profit_closed_coin_sum,
stake_currency,
fiat_display_currency
) if self._fiat_converter else 0
profit_all_coin_sum = round(sum(profit_all_coin), 8)
profit_all_percent = round(nan_to_num(mean(profit_all_percent)) * 100, 2)
profit_all_fiat = self._fiat_converter.convert_amount(
profit_all_coin_sum,
stake_currency,
fiat_display_currency
) if self._fiat_converter else 0
num = float(len(durations) or 1)
return {
'profit_closed_coin': profit_closed_coin_sum,
'profit_closed_percent': profit_closed_percent,
'profit_closed_fiat': profit_closed_fiat,
'profit_all_coin': profit_all_coin_sum,
'profit_all_percent': profit_all_percent,
'profit_all_fiat': profit_all_fiat,
'trade_count': len(trades),
'first_trade_date': arrow.get(trades[0].open_date).humanize(),
'latest_trade_date': arrow.get(trades[-1].open_date).humanize(),
'avg_duration': str(timedelta(seconds=sum(durations) / num)).split('.')[0],
'best_pair': bp_pair,
'best_rate': round(bp_rate * 100, 2),
}
def _rpc_balance(self, fiat_display_currency: str) -> Dict:
""" Returns current account balance per crypto """
output = []
total = 0.0
for coin, balance in self._freqtrade.exchange.get_balances().items():
if not balance['total']:
continue
if coin == 'BTC':
rate = 1.0
else:
try:
if coin == 'USDT':
rate = 1.0 / self._freqtrade.get_sell_rate('BTC/USDT', False)
else:
rate = self._freqtrade.get_sell_rate(coin + '/BTC', False)
except (TemporaryError, DependencyException):
continue
est_btc: float = rate * balance['total']
total = total + est_btc
output.append({
'currency': coin,
'available': balance['free'],
'balance': balance['total'],
'pending': balance['used'],
'est_btc': est_btc,
})
if total == 0.0:
raise RPCException('all balances are zero')
symbol = fiat_display_currency
value = self._fiat_converter.convert_amount(total, 'BTC',
symbol) if self._fiat_converter else 0
return {
'currencies': output,
'total': total,
'symbol': symbol,
'value': value,
}
def _rpc_start(self) -> Dict[str, str]:
""" Handler for start """
if self._freqtrade.state == State.RUNNING:
return {'status': 'already running'}
self._freqtrade.state = State.RUNNING
return {'status': 'starting trader ...'}
def _rpc_stop(self) -> Dict[str, str]:
""" Handler for stop """
if self._freqtrade.state == State.RUNNING:
self._freqtrade.state = State.STOPPED
return {'status': 'stopping trader ...'}
return {'status': 'already stopped'}
def _rpc_reload_conf(self) -> Dict[str, str]:
""" Handler for reload_conf. """
self._freqtrade.state = State.RELOAD_CONF
return {'status': 'reloading config ...'}
def _rpc_stopbuy(self) -> Dict[str, str]:
"""
Handler to stop buying, but handle open trades gracefully.
"""
if self._freqtrade.state == State.RUNNING:
# Set 'max_open_trades' to 0
self._freqtrade.config['max_open_trades'] = 0
return {'status': 'No more buy will occur from now. Run /reload_conf to reset.'}
def _rpc_forcesell(self, trade_id) -> None:
"""
Handler for forcesell <id>.
Sells the given trade at current price
"""
def _exec_forcesell(trade: Trade) -> None:
# Check if there is there is an open order
if trade.open_order_id:
order = self._freqtrade.exchange.get_order(trade.open_order_id, trade.pair)
# Cancel open LIMIT_BUY orders and close trade
if order and order['status'] == 'open' \
and order['type'] == 'limit' \
and order['side'] == 'buy':
self._freqtrade.exchange.cancel_order(trade.open_order_id, trade.pair)
trade.close(order.get('price') or trade.open_rate)
# Do the best effort, if we don't know 'filled' amount, don't try selling
if order['filled'] is None:
return
trade.amount = order['filled']
# Ignore trades with an attached LIMIT_SELL order
if order and order['status'] == 'open' \
and order['type'] == 'limit' \
and order['side'] == 'sell':
return
# Get current rate and execute sell
current_rate = self._freqtrade.get_sell_rate(trade.pair, False)
self._freqtrade.execute_sell(trade, current_rate, SellType.FORCE_SELL)
# ---- EOF def _exec_forcesell ----
if self._freqtrade.state != State.RUNNING:
raise RPCException('trader is not running')
if trade_id == 'all':
# Execute sell for all open orders
for trade in Trade.get_open_trades():
_exec_forcesell(trade)
Trade.session.flush()
return
# Query for trade
trade = Trade.query.filter(
sql.and_(
Trade.id == trade_id,
Trade.is_open.is_(True)
)
).first()
if not trade:
logger.warning('forcesell: Invalid argument received')
raise RPCException('invalid argument')
_exec_forcesell(trade)
Trade.session.flush()
def _rpc_forcebuy(self, pair: str, price: Optional[float]) -> Optional[Trade]:
"""
Handler for forcebuy <asset> <price>
Buys a pair trade at the given or current price
"""
if not self._freqtrade.config.get('forcebuy_enable', False):
raise RPCException('Forcebuy not enabled.')
if self._freqtrade.state != State.RUNNING:
raise RPCException('trader is not running')
# Check pair is in stake currency
stake_currency = self._freqtrade.config.get('stake_currency')
if not pair.endswith(stake_currency):
raise RPCException(
f'Wrong pair selected. Please pairs with stake {stake_currency} pairs only')
# check if valid pair
# check if pair already has an open pair
trade = Trade.query.filter(Trade.is_open.is_(True)).filter(Trade.pair.is_(pair)).first()
if trade:
raise RPCException(f'position for {pair} already open - id: {trade.id}')
# gen stake amount
stakeamount = self._freqtrade._get_trade_stake_amount(pair)
# execute buy
if self._freqtrade.execute_buy(pair, stakeamount, price):
trade = Trade.query.filter(Trade.is_open.is_(True)).filter(Trade.pair.is_(pair)).first()
return trade
else:
return None
def _rpc_performance(self) -> List[Dict]:
"""
Handler for performance.
Shows a performance statistic from finished trades
"""
pair_rates = Trade.session.query(Trade.pair,
sql.func.sum(Trade.close_profit).label('profit_sum'),
sql.func.count(Trade.pair).label('count')) \
.filter(Trade.is_open.is_(False)) \
.group_by(Trade.pair) \
.order_by(sql.text('profit_sum DESC')) \
.all()
return [
{'pair': pair, 'profit': round(rate * 100, 2), 'count': count}
for pair, rate, count in pair_rates
]
def _rpc_count(self) -> List[Trade]:
""" Returns the number of trades running """
if self._freqtrade.state != State.RUNNING:
raise RPCException('trader is not running')
return Trade.get_open_trades()
def _rpc_whitelist(self) -> Dict:
""" Returns the currently active whitelist"""
res = {'method': self._freqtrade.pairlists.name,
'length': len(self._freqtrade.active_pair_whitelist),
'whitelist': self._freqtrade.active_pair_whitelist
}
return res
def _rpc_blacklist(self, add: List[str]) -> Dict:
""" Returns the currently active blacklist"""
if add:
self._freqtrade.pairlists.blacklist.extend(add)
res = {'method': self._freqtrade.pairlists.name,
'length': len(self._freqtrade.pairlists.blacklist),
'blacklist': self._freqtrade.pairlists.blacklist
}
return res