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faster update_statistics

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j 2013-10-22 17:50:35 +00:00
parent 82fa80a4f9
commit 2644edb971
1 changed files with 8 additions and 5 deletions
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13
pandora/user/tasks.py
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@ -2,6 +2,7 @@
# vi:si:et:sw=4:sts=4:ts=4 # vi:si:et:sw=4:sts=4:ts=4
import json import json
from datetime import timedelta from datetime import timedelta
from itertools import izip_longest
from celery.task import task, periodic_task from celery.task import task, periodic_task
@ -14,14 +15,16 @@ def cronjob(**kwargs):
update_statistics() update_statistics()
def update_statistics(): def update_statistics():
def chunker(iterable, chunksize, filler):
return izip_longest(*[iter(iterable)]*chunksize, fillvalue=filler)
stats = Statistics() stats = Statistics()
ids = [i['session_key'] for i in models.SessionData.objects.all().values('session_key')] ids = [i['session_key'] for i in models.SessionData.objects.all().values('session_key')]
for id in ids:
try: for chunk in chunker(ids, 100, None):
u = models.SessionData.objects.get(pk=id) chunk = filter(None, chunk)
for u in models.SessionData.objects.filter(pk__in=chunk):
stats.add(u.json()) stats.add(u.json())
except:
pass
Settings.set('statistics', stats) Settings.set('statistics', stats)
@task(ignore_results=True, queue='default') @task(ignore_results=True, queue='default')