def __init__(self):
self.arbiter = None
self.arbiter_process = None
self.arbiter_stop_flag = Value('b', False)
self.config = Configuration()
self.start_time = 0
self.lock = Lock()
def __init__(self, currency, config):
self.name = self.__class__.__name__
self.currency = currency
self.depth_updated = 0
self.config = config or Configuration()
self.update_rate = self.config.default_market_update_rate
self.depth = None
def start(self, config: dict):
"""Start the arbiter worker process"""
with self.lock:
if self.arbiter and not self.arbiter_stop_flag.value:
msg = 'Failed to start. Arbiter process already running.'
raise ServiceException(msg)
if self.arbiter_process and self.arbiter_process.is_alive():
LOG.info('Arbiter process is still alive. Terminating...')
self.arbiter_process.terminate()
self.arbiter_stop_flag = Value('b', False)
self.config = Configuration().update(config)
self.arbiter = Arbiter(self.config)
self.arbiter_process = Process(target=self._loop,
args=(self.arbiter,
self.arbiter_stop_flag))
self.arbiter_process.daemon = True
self.arbiter_process.start()
self.start_time = time.time()
LOG.info('Arbiter process was started')
return True
def __init__(self, config=None):
"""USD is used as pivot"""
self.__dict__ = self.__shared_state
self.rates = {
"USD": 1,
"EUR": 0.77,
"CNY": 6.15,
"SEK": 6.6,
}
self.config = config or Configuration()
self.last_update = 0
self.update_delay = self.config.fiat_update_delay
self.bank_fee = self.config.bank_fee
class ArbiterService(object):
"""Represents the service of arbiter process management"""
def __init__(self):
self.arbiter = None
self.arbiter_process = None
self.arbiter_stop_flag = Value('b', False)
self.config = Configuration()
self.start_time = 0
self.lock = Lock()
@staticmethod
def _loop(arbiter, is_stop):
"""Arbiter worker process main loop"""
while not is_stop.value:
try:
arbiter.depths = arbiter.update_depths()
arbiter.tickers()
arbiter.tick()
time.sleep(arbiter.config.refresh_rate)
except Exception:
LOG.exception('Update iteration failed')
is_stop.value = True
LOG.info('Exit from arbiter loop')
def status(self):
"""Return status of the arbiter's worker process"""
with self.lock:
started = False
if self.arbiter and not self.arbiter_stop_flag.value:
started = True
started = started and self.arbiter_process.is_alive()
return {
'is_started': started,
'last_start_time': self.start_time,
'current_parameters': self.config.as_dict()
}
def start(self, config: dict):
"""Start the arbiter worker process"""
with self.lock:
if self.arbiter and not self.arbiter_stop_flag.value:
msg = 'Failed to start. Arbiter process already running.'
raise ServiceException(msg)
if self.arbiter_process and self.arbiter_process.is_alive():
LOG.info('Arbiter process is still alive. Terminating...')
self.arbiter_process.terminate()
self.arbiter_stop_flag = Value('b', False)
self.config = Configuration().update(config)
self.arbiter = Arbiter(self.config)
self.arbiter_process = Process(target=self._loop,
args=(self.arbiter,
self.arbiter_stop_flag))
self.arbiter_process.daemon = True
self.arbiter_process.start()
self.start_time = time.time()
LOG.info('Arbiter process was started')
return True
def stop(self):
"""Stop the arbiter worker process"""
with self.lock:
is_stopped = True
if self.arbiter:
self.arbiter_stop_flag.value = True
if self.arbiter_process.is_alive():
self.arbiter_process.terminate()
is_stopped = not self.arbiter_process.is_alive()
if is_stopped:
LOG.info('Arbiter process was stopped')
return is_stopped
import logging
import time
from arbitrage.arbiter import Arbiter
from arbitrage.config import Configuration
log_format = '%(asctime)s - %(name)s - %(levelname)s - %(message)s'
logging.basicConfig(format=log_format, level=logging.DEBUG)
config = Configuration()
arbiter = Arbiter(config)
def update(arbiter):
arbiter.depths = arbiter.update_depths()
arbiter.tickers()
arbiter.tick()
return (arbiter)
while 1:
try:
arbiter = update(arbiter)
except:
pass
time.sleep(config.refresh_rate)
def setUp(self):
self.arbiter = arbiter.Arbiter(Configuration(), [], [])