def increment(self, key, participant_identifier, count=1):
if count == 0:
return
cache_key = COUNTER_CACHE_KEY % key
freq_cache_key = COUNTER_FREQ_CACHE_KEY % key
new_value = Count.next( cache_key, participant_identifier, count)
if new_value > count:
Count.next( freq_cache_key, new_value - count, -1 )
Count.next( freq_cache_key, new_value, 1)
def clear(self, key, participant_identifier):
try:
# Remove the direct entry
cache_key = COUNTER_CACHE_KEY % key
freq = Count.get(cache_key, participant_identifier)
Count.deletefield(cache_key, participant_identifier)
# Remove from the histogram
freq_cache_key = COUNTER_FREQ_CACHE_KEY % key
Count.next(freq_cache_key, freq, -1)
except:
# Handle Redis failures gracefully
pass
