forked from s4w3d0ff/python-poloniex
/
coach.py
56 lines (50 loc) · 2.07 KB
/
coach.py
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# coach.py
# Copyright (C) 2016 https://github.com/s4w3d0ff
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import collections
import logging
import time
class Coach(object):
"""
Coaches the api wrapper, makes sure it doesn't get all hyped up on Mt.Dew
Poloniex default call limit is 6 calls per 1 sec.
"""
def __init__(self, timeFrame=1.0, callLimit=3):
"""
timeFrame = float time in secs [default = 1.0]
callLimit = int max amount of calls per 'timeFrame' [default = 6]
"""
self.timeFrame = timeFrame
self.timeBook = collections.deque(list(), callLimit)
@property
def timeOverTimeframe(self):
elapsed = self.timeBook[-1] - self.timeBook[0]
logging.debug("Timebook=%s, Elapsed over time frame = %f",
self.timeBook, elapsed)
return elapsed
def maybeSleep(self):
if len(self.timeBook) == 1:
logging.debug("First API call. No need to sleep.")
return
requiredElapsed = self.timeOverTimeframe - self.timeFrame
if requiredElapsed < 0:
requiredElapsed *= -1
logging.debug("Need to sleep %f seconds", requiredElapsed)
time.sleep(requiredElapsed)
def wait(self):
""" Makes sure our api calls don't go past the api call limit """
self.timeBook.append(time.time())
self.maybeSleep()