def is_cache(self, gid, option):
#check last requested timestamp
#get last request timestamp and filter
requested_str = self.rc.hget(S1.cache_key(gid),
S1.cache_requested_key())
last_filter = self.rc.hget(S1.cache_key(gid), S1.cache_filter_key())
#save last request time and filter
self.rc.hset(S1.cache_key(gid), S1.cache_requested_key(), time.time())
self.rc.hset(S1.cache_key(gid), S1.cache_filter_key(), option)
if requested_str:
if (not last_filter or option == last_filter) and time.time(
) - float(requested_str) < config.DEFAULT_FORCE_MISS_TIMEOUT:
self.logger.warning('Force-request detected [{0}]'.format(gid))
else:
# cache hit
return True
else:
self.logger.warning('New user detected [{0}]'.format(gid))
# cache miss
return False
def check_orphan(self, gid, at_time):
""" returns true if gid is orphaned """
#get last requested timestamp
requested_str = self.rc.hget(S1.cache_key(gid),
S1.cache_requested_key())
if not requested_str:
return False
# compare to orphaned timeout
if at_time - float(requested_str) < config.DEFAULT_ORPHANED_TIMEOUT:
return False
return True
def reset_cache(self, gid):
self.set_poll_stamp(gid, 0)
self.rc.hset(S1.cache_key(gid), S1.cache_requested_key(), time.time())