def is_cache_available(self, cache_file_path):
if not cache_file_path.isfile():
logger.debug("cache not found: {}".format(cache_file_path))
return False
try:
dtr = DateTimeRange(datetime.fromtimestamp(cache_file_path.mtime),
datetime.now())
except OSError:
return False
if not dtr.is_valid_timerange():
return False
cache_elapsed = CacheTime(dtr.get_timedelta_second())
cache_msg = "path={path}, lifetime={lifetime:.1f}h, elapsed={elapsed:.1f}h".format(
path=cache_file_path,
lifetime=self.__cache_lifetime.hour,
elapsed=cache_elapsed.hour)
if cache_elapsed < self.__cache_lifetime:
logger.debug("cache available: {}".format(cache_msg))
return True
logger.debug("cache expired: {}".format(cache_msg))
return False
def parseIbHours(ibHours, tz):
if not isinstance(ibHours, str):
fatal.errorAndExit('trading hours is a string')
openHours = []
# '20200427:0930-20200427:1600;20200428:0930-20200428:1600'
ranges = ibHours.split(';')
m = re.compile('.*:CLOSED')
for range_ in ranges:
if range_ == '':
continue
if m.match(range_): # skip closed days
continue
ts = range_.split('-')
if len(ts) != 2:
fatal.errorAndExit(
'only two timestamps per range: {} {}'.format(ts, ibHours))
start = tz.localize(datetime.strptime(
ts[0], '%Y%m%d:%H%M')).astimezone(pytz.utc)
end = tz.localize(datetime.strptime(ts[1], '%Y%m%d:%H%M')).astimezone(
pytz.utc)
r = DateTimeRange(start, end)
if not r.is_valid_timerange():
fatal.errorAndExit('should get a valid timerange')
openHours.append(r)
logging.debug('openHours: %s', openHours)
return openHours
