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freqtrade
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Fix application state and add new optional config attribute: "initial_state"

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* Move State handling to misc, to avoid circular imports
* Add optional config attribute "initial_state"
pull/18/head
gcarq 9 years ago
parent 996beae770
commit a4b2f4e4b9
6 changed files with 118 additions and 107 deletions
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6
README.md
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@ -40,10 +40,14 @@ See the example below:
For example value `-0.10` will cause immediate sell if the
profit dips below -10% for a given trade. This parameter is optional.
`initial_state` is an optional field that defines the initial application state.
Possible values are `running` or `stopped`. (default=`running`)
If the value is `stopped` the bot has to be started with `/start` first.
The other values should be self-explanatory,
if not feel free to raise a github issue.
##### Prerequisites
#### Prerequisites
* python3.6
* sqlite
* [TA-lib](https://github.com/mrjbq7/ta-lib#dependencies) binaries

3
config.json.example
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@ -35,5 +35,6 @@
"enabled": true,
"token": "token",
"chat_id": "chat_id"
}
},
"initial_state": "running"
}

159
main.py
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@ -1,5 +1,4 @@
#!/usr/bin/env python
import enum
import json
import logging
import time
@ -8,13 +7,12 @@ from datetime import datetime
from typing import Optional
from jsonschema import validate
from wrapt import synchronized
import exchange
import persistence
from persistence import Trade
from analyze import get_buy_signal
from misc import CONF_SCHEMA
from misc import CONF_SCHEMA, get_state, State, update_state
from rpc import telegram
logging.basicConfig(level=logging.DEBUG,
@ -26,38 +24,8 @@ __copyright__ = "gcarq 2017"
__license__ = "GPLv3"
__version__ = "0.8.0"
class State(enum.Enum):
RUNNING = 0
PAUSED = 1
TERMINATE = 2
_CONF = {}
# Current application state
_STATE = State.RUNNING
@synchronized
def update_state(state: State) -> None:
"""
Updates the application state
:param state: new state
:return: None
"""
global _STATE
_STATE = state
@synchronized
def get_state() -> State:
"""
Gets the current application state
:return:
"""
return _STATE
def _process() -> None:
"""
@ -65,44 +33,43 @@ def _process() -> None:
otherwise a new trade is created.
:return: None
"""
# Query trades from persistence layer
trades = Trade.query.filter(Trade.is_open.is_(True)).all()
if len(trades) < _CONF['max_open_trades']:
try:
# Create entity and execute trade
trade = create_trade(float(_CONF['stake_amount']), exchange.EXCHANGE)
if trade:
Trade.session.add(trade)
try:
# Query trades from persistence layer
trades = Trade.query.filter(Trade.is_open.is_(True)).all()
if len(trades) < _CONF['max_open_trades']:
try:
# Create entity and execute trade
trade = create_trade(float(_CONF['stake_amount']), exchange.EXCHANGE)
if trade:
Trade.session.add(trade)
else:
logging.info('Got no buy signal...')
except ValueError:
logger.exception('Unable to create trade')
for trade in trades:
if close_trade_if_fulfilled(trade):
logger.info(
'No open orders found and trade is fulfilled. Marking %s as closed ...',
trade
)
Trade.session.flush()
for trade in filter(lambda t: t.is_open, trades):
# Check if there is already an open order for this trade
orders = exchange.get_open_orders(trade.pair)
orders = [o for o in orders if o['id'] == trade.open_order_id]
if orders:
logger.info('There is an open order for: %s', orders[0])
else:
logging.info('Got no buy signal...')
except ValueError:
logger.exception('Unable to create trade')
for trade in trades:
if close_trade_if_fulfilled(trade):
logger.info(
'No open orders found and trade is fulfilled. Marking %s as closed ...',
trade
)
for trade in filter(lambda t: t.is_open, trades):
# Check if there is already an open order for this trade
orders = exchange.get_open_orders(trade.pair)
orders = [o for o in orders if o['id'] == trade.open_order_id]
if orders:
msg = 'There is an open order for {}: Order(total={}, remaining={}, type={}, id={})' \
.format(
trade,
round(orders[0]['amount'], 8),
round(orders[0]['remaining'], 8),
orders[0]['type'],
orders[0]['id'])
logger.info(msg)
else:
# Update state
trade.open_order_id = None
# Check if we can sell our current pair
handle_trade(trade)
# Update state
trade.open_order_id = None
# Check if we can sell our current pair
handle_trade(trade)
Trade.session.flush()
except (ConnectionError, json.JSONDecodeError) as error:
msg = 'Got {} in _process()'.format(error.__class__.__name__)
logger.exception(msg)
def close_trade_if_fulfilled(trade: Trade) -> bool:
@ -247,35 +214,43 @@ def init(config: dict, db_url: Optional[str] = None) -> None:
persistence.init(config, db_url)
exchange.init(config)
# Set initial application state
initial_state = config.get('initial_state')
if initial_state:
update_state(State[initial_state.upper()])
else:
update_state(State.STOPPED)
def app(config: dict) -> None:
def app(config: dict) -> None:
"""
Main function which handles the application state
:param config: config as dict
:return: None
"""
logger.info('Starting freqtrade %s', __version__)
init(config)
try:
telegram.send_msg('*Status:* `trader started`')
logger.info('Trader started')
old_state = get_state()
logger.info('Initial State: %s', old_state)
telegram.send_msg('*Status:* `{}`'.format(old_state.name.lower()))
while True:
state = get_state()
if state == State.TERMINATE:
return
elif state == State.PAUSED:
new_state = get_state()
# Log state transition
if new_state != old_state:
telegram.send_msg('*Status:* `{}`'.format(new_state.name.lower()))
logging.info('Changing state to: %s', new_state.name)
if new_state == State.STOPPED:
time.sleep(1)
elif state == State.RUNNING:
try:
_process()
Trade.session.flush()
except (ConnectionError, json.JSONDecodeError, ValueError) as error:
msg = 'Got {} during _process()'.format(error.__class__.__name__)
logger.exception(msg)
finally:
time.sleep(25)
except (RuntimeError, json.JSONDecodeError):
telegram.send_msg(
'*Status:* Got RuntimeError: ```\n{}\n```'.format(traceback.format_exc())
)
logger.exception('RuntimeError. Stopping trader ...')
elif new_state == State.RUNNING:
_process()
# We need to sleep here because otherwise we would run into bittrex rate limit
time.sleep(25)
old_state = new_state
except RuntimeError:
telegram.send_msg('*Status:* Got RuntimeError: ```\n{}\n```'.format(traceback.format_exc()))
logger.exception('RuntimeError. Trader stopped!')
finally:
telegram.send_msg('*Status:* `Trader has stopped`')

36
misc.py
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@ -1,3 +1,36 @@
import enum
from wrapt import synchronized
class State(enum.Enum):
RUNNING = 0
STOPPED = 1
# Current application state
_STATE = State.STOPPED
@synchronized
def update_state(state: State) -> None:
"""
Updates the application state
:param state: new state
:return: None
"""
global _STATE
_STATE = state
@synchronized
def get_state() -> State:
"""
Gets the current application state
:return:
"""
return _STATE
# Required json-schema for user specified config
CONF_SCHEMA = {
@ -25,7 +58,8 @@ CONF_SCHEMA = {
'chat_id': {'type': 'string'},
},
'required': ['enabled', 'token', 'chat_id']
}
},
'initial_state': {'type': 'string', 'enum': ['running', 'stopped']},
},
'definitions': {
'exchange': {

8
rpc/telegram.py
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@ -8,6 +8,7 @@ from telegram.error import NetworkError
from telegram.ext import CommandHandler, Updater
from telegram import ParseMode, Bot, Update
from misc import get_state, State, update_state
from persistence import Trade
import exchange
@ -89,7 +90,6 @@ def _status(bot: Bot, update: Update) -> None:
"""
# Fetch open trade
trades = Trade.query.filter(Trade.is_open.is_(True)).all()
from main import get_state, State
if get_state() != State.RUNNING:
send_msg('*Status:* `trader is not running`', bot=bot)
elif not trades:
@ -200,7 +200,6 @@ def _start(bot: Bot, update: Update) -> None:
:param update: message update
:return: None
"""
from main import get_state, State, update_state
if get_state() == State.RUNNING:
send_msg('*Status:* `already running`', bot=bot)
else:
@ -216,10 +215,9 @@ def _stop(bot: Bot, update: Update) -> None:
:param update: message update
:return: None
"""
from main import get_state, State, update_state
if get_state() == State.RUNNING:
send_msg('`Stopping trader ...`', bot=bot)
update_state(State.PAUSED)
update_state(State.STOPPED)
else:
send_msg('*Status:* `already stopped`', bot=bot)
@ -233,7 +231,6 @@ def _forcesell(bot: Bot, update: Update) -> None:
:param update: message update
:return: None
"""
from main import get_state, State
if get_state() != State.RUNNING:
send_msg('`trader is not running`', bot=bot)
return
@ -281,7 +278,6 @@ def _performance(bot: Bot, update: Update) -> None:
:param update: message update
:return: None
"""
from main import get_state, State
if get_state() != State.RUNNING:
send_msg('`trader is not running`', bot=bot)
return

13
test/test_telegram.py
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@ -6,8 +6,8 @@ from jsonschema import validate
from telegram import Bot, Update, Message, Chat
import exchange
from main import init, create_trade, update_state, State, get_state
from misc import CONF_SCHEMA
from main import init, create_trade
from misc import CONF_SCHEMA, update_state, State, get_state
from persistence import Trade
from rpc.telegram import _status, _profit, _forcesell, _performance, _start, _stop
@ -46,7 +46,8 @@ class TestTelegram(unittest.TestCase):
"enabled": True,
"token": "token",
"chat_id": "0"
}
},
"initial_state": "running"
}
def test_1_status_handle(self):
@ -165,8 +166,8 @@ class TestTelegram(unittest.TestCase):
with patch.multiple('main.telegram', _CONF=self.conf, init=MagicMock(), send_msg=msg_mock):
init(self.conf, 'sqlite://')
update_state(State.PAUSED)
self.assertEqual(get_state(), State.PAUSED)
update_state(State.STOPPED)
self.assertEqual(get_state(), State.STOPPED)
_start(bot=MagicBot(), update=self.update)
self.assertEqual(get_state(), State.RUNNING)
self.assertEqual(msg_mock.call_count, 0)
@ -180,7 +181,7 @@ class TestTelegram(unittest.TestCase):
update_state(State.RUNNING)
self.assertEqual(get_state(), State.RUNNING)
_stop(bot=MagicBot(), update=self.update)
self.assertEqual(get_state(), State.PAUSED)
self.assertEqual(get_state(), State.STOPPED)
self.assertEqual(msg_mock.call_count, 1)
self.assertIn('Stopping trader', msg_mock.call_args_list[0][0][0])

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