def run():
"""
Runs migrations per each table and adds new fields in case they have not been added yet.
Accepted action types: add, drop, rename, modify_type, allow_null, deny_null
If actions type is 'rename', you must add new field with 'old_name' key.
To make column to not nullable, you must clean all null value of columns.
"""
print('Running database migrations...')
database.open_connection()
# create migrator
migrator = PostgresqlMigrator(database.db)
# run migrations
_candle(migrator)
_completed_trade(migrator)
_daily_balance(migrator)
_log(migrator)
_order(migrator)
_orderbook(migrator)
_ticker(migrator)
_trade(migrator)
# create initial tables
from jesse.models import Candle, CompletedTrade, Log, Order, Option
database.db.create_tables([Candle, CompletedTrade, Log, Order])
database.close_connection()
def get_config(client_config: dict, has_live=False) -> dict:
from jesse.services.db import database
database.open_connection()
from jesse.models.Option import Option
try:
o = Option.get(Option.type == 'config')
# merge it with client's config (because it could include new keys added),
# update it in the database, and then return it
data = jh.merge_dicts(client_config, json.loads(o.json))
# make sure the list of BACKTEST exchanges is up to date
from jesse.modes.import_candles_mode.drivers import drivers
for k in list(data['backtest']['exchanges'].keys()):
if k not in drivers:
del data['backtest']['exchanges'][k]
# make sure the list of LIVE exchanges is up to date
if has_live:
from jesse_live.info import SUPPORTED_EXCHANGES_NAMES
live_exchanges = list(sorted(SUPPORTED_EXCHANGES_NAMES))
for k in list(data['live']['exchanges'].keys()):
if k not in live_exchanges:
del data['live']['exchanges'][k]
# fix the settlement_currency of exchanges
for k, e in data['live']['exchanges'].items():
e['settlement_currency'] = jh.get_settlement_currency_from_exchange(
e['name'])
for k, e in data['backtest']['exchanges'].items():
e['settlement_currency'] = jh.get_settlement_currency_from_exchange(
e['name'])
o.updated_at = jh.now()
o.save()
except peewee.DoesNotExist:
# if not found, that means it's the first time. Store in the DB and
# then return what was sent from the client side without changing it
o = Option({
'id': jh.generate_unique_id(),
'updated_at': jh.now(),
'type': 'config',
'json': json.dumps(client_config)
})
o.save(force_insert=True)
data = client_config
database.close_connection()
return {'data': data}
def get_candles(exchange: str, symbol: str, timeframe: str):
from jesse.services.db import database
database.open_connection()
from jesse.services.candle import generate_candle_from_one_minutes
from jesse.models.utils import fetch_candles_from_db
symbol = symbol.upper()
num_candles = 210
one_min_count = jh.timeframe_to_one_minutes(timeframe)
finish_date = jh.now(force_fresh=True)
start_date = finish_date - (num_candles * one_min_count * 60_000)
# fetch 1m candles from database
candles = np.array(
fetch_candles_from_db(exchange, symbol, start_date, finish_date))
# if there are no candles in the database, return []
if candles.size == 0:
database.close_connection()
return []
# leave out first candles until the timestamp of the first candle is the beginning of the timeframe
timeframe_duration = one_min_count * 60_000
while candles[0][0] % timeframe_duration != 0:
candles = candles[1:]
# generate bigger candles from 1m candles
if timeframe != '1m':
generated_candles = []
for i in range(len(candles)):
if (i + 1) % one_min_count == 0:
bigger_candle = generate_candle_from_one_minutes(
timeframe, candles[(i - (one_min_count - 1)):(i + 1)],
True)
generated_candles.append(bigger_candle)
candles = generated_candles
database.close_connection()
return [{
'time': int(c[0] / 1000),
'open': c[1],
'close': c[2],
'high': c[3],
'low': c[4],
'volume': c[5],
} for c in candles]
def update_config(client_config: dict):
from jesse.services.db import database
database.open_connection()
from jesse.models.Option import Option
# at this point there must already be one option record for "config" existing, so:
o = Option.get(Option.type == 'config')
o.json = json.dumps(client_config)
o.updated_at = jh.now()
o.save()
database.close_connection()
import numpy as np
import peewee
import jesse.helpers as jh
from jesse.config import config
from jesse.services.db import database
if database.is_closed():
database.open_connection()
class CompletedTrade(peewee.Model):
"""A trade is made when a position is opened AND closed."""
id = peewee.UUIDField(primary_key=True)
strategy_name = peewee.CharField()
symbol = peewee.CharField()
exchange = peewee.CharField()
type = peewee.CharField()
timeframe = peewee.CharField()
entry_price = peewee.FloatField(default=np.nan)
exit_price = peewee.FloatField(default=np.nan)
take_profit_at = peewee.FloatField(default=np.nan)
stop_loss_at = peewee.FloatField(default=np.nan)
qty = peewee.FloatField(default=np.nan)
opened_at = peewee.BigIntegerField()
closed_at = peewee.BigIntegerField()
entry_candle_timestamp = peewee.BigIntegerField()
exit_candle_timestamp = peewee.BigIntegerField()
leverage = peewee.IntegerField()
def run(exchange: str,
symbol: str,
start_date_str: str,
skip_confirmation: bool = False,
mode: str = 'candles') -> None:
config['app']['trading_mode'] = mode
# first, create and set session_id
store.app.set_session_id()
register_custom_exception_handler()
# close database connection
from jesse.services.db import database
database.open_connection()
# at every second, we check to see if it's time to execute stuff
status_checker = Timeloop()
@status_checker.job(interval=timedelta(seconds=1))
def handle_time():
if process_status() != 'started':
raise exceptions.Termination
status_checker.start()
try:
start_timestamp = jh.arrow_to_timestamp(
arrow.get(start_date_str, 'YYYY-MM-DD'))
except:
raise ValueError(
'start_date must be a string representing a date before today. ex: 2020-01-17'
)
# more start_date validations
today = arrow.utcnow().floor('day').int_timestamp * 1000
if start_timestamp == today:
raise ValueError(
"Today's date is not accepted. start_date must be a string a representing date BEFORE today."
)
elif start_timestamp > today:
raise ValueError(
"Future's date is not accepted. start_date must be a string a representing date BEFORE today."
)
# We just call this to throw a exception in case of a symbol without dash
jh.quote_asset(symbol)
click.clear()
symbol = symbol.upper()
until_date = arrow.utcnow().floor('day')
start_date = arrow.get(start_timestamp / 1000)
days_count = jh.date_diff_in_days(start_date, until_date)
candles_count = days_count * 1440
try:
driver: CandleExchange = drivers[exchange]()
except KeyError:
raise ValueError(f'{exchange} is not a supported exchange')
except TypeError:
raise FileNotFoundError('You are missing the "plugins.py" file')
loop_length = int(candles_count / driver.count) + 1
# ask for confirmation
if not skip_confirmation:
click.confirm(
f'Importing {days_count} days candles from "{exchange}" for "{symbol}". Duplicates will be skipped. All good?',
abort=True,
default=True)
progressbar = Progressbar(loop_length)
for i in range(candles_count):
temp_start_timestamp = start_date.int_timestamp * 1000
temp_end_timestamp = temp_start_timestamp + (driver.count - 1) * 60000
# to make sure it won't try to import candles from the future! LOL
if temp_start_timestamp > jh.now_to_timestamp():
break
# prevent duplicates calls to boost performance
count = Candle.select().where(
Candle.timestamp.between(temp_start_timestamp, temp_end_timestamp),
Candle.symbol == symbol, Candle.exchange == exchange).count()
already_exists = count == driver.count
if not already_exists:
# it's today's candles if temp_end_timestamp < now
if temp_end_timestamp > jh.now_to_timestamp():
temp_end_timestamp = arrow.utcnow().floor(
'minute').int_timestamp * 1000 - 60000
# fetch from market
candles = driver.fetch(symbol, temp_start_timestamp)
# check if candles have been returned and check those returned start with the right timestamp.
# Sometimes exchanges just return the earliest possible candles if the start date doesn't exist.
if not len(candles) or arrow.get(
candles[0]['timestamp'] / 1000) > start_date:
click.clear()
first_existing_timestamp = driver.get_starting_time(symbol)
# if driver can't provide accurate get_starting_time()
if first_existing_timestamp is None:
raise CandleNotFoundInExchange(
f'No candles exists in the market for this day: {jh.timestamp_to_time(temp_start_timestamp)[:10]} \n'
'Try another start_date')
# handle when there's missing candles during the period
if temp_start_timestamp > first_existing_timestamp:
# see if there are candles for the same date for the backup exchange,
# if so, get those, if not, download from that exchange.
if driver.backup_exchange is not None:
candles = _get_candles_from_backup_exchange(
exchange, driver.backup_exchange, symbol,
temp_start_timestamp, temp_end_timestamp)
else:
temp_start_time = jh.timestamp_to_time(
temp_start_timestamp)[:10]
temp_existing_time = jh.timestamp_to_time(
first_existing_timestamp)[:10]
sync_publish(
'alert', {
'message':
f'No candle exists in the market for {temp_start_time}. So '
f'Jesse started importing since the first existing date which is {temp_existing_time}',
'type':
'success'
})
run(exchange, symbol,
jh.timestamp_to_time(first_existing_timestamp)[:10],
True)
return
# fill absent candles (if there's any)
candles = _fill_absent_candles(candles, temp_start_timestamp,
temp_end_timestamp)
# store in the database
if skip_confirmation:
store_candles(candles)
else:
threading.Thread(target=store_candles, args=[candles]).start()
# add as much as driver's count to the temp_start_time
start_date = start_date.shift(minutes=driver.count)
progressbar.update()
sync_publish(
'progressbar', {
'current':
progressbar.current,
'estimated_remaining_seconds':
progressbar.estimated_remaining_seconds
})
# sleep so that the exchange won't get angry at us
if not already_exists:
time.sleep(driver.sleep_time)
# stop the status_checker time loop
status_checker.stop()
sync_publish(
'alert', {
'message':
f'Successfully imported candles since {jh.timestamp_to_date(start_timestamp)} until today ({days_count} days). ',
'type': 'success'
})
# if it is to skip, then it's being called from another process hence we should leave the database be
if not skip_confirmation:
# close database connection
from jesse.services.db import database
database.close_connection()
