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Lock event during automatic waiting list assignment

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This commit is contained in:
Raphael Michel
2017-10-24 12:47:08 +02:00
parent cb6f6247fd
commit 03dd0e530e
1 changed files with 26 additions and 25 deletions
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51
src/pretix/base/services/waitinglist.py
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@@ -28,33 +28,34 @@ def assign_automatically(event_id: int, user_id: int=None, subevent_id: int=None
sent = 0
for wle in qs:
if (wle.item, wle.variation) in gone:
continue
quotas = (wle.variation.quotas.filter(subevent=wle.subevent)
if wle.variation
else wle.item.quotas.filter(subevent=wle.subevent))
availability = (
wle.variation.check_quotas(count_waitinglist=False, _cache=quota_cache, subevent=wle.subevent)
if wle.variation
else wle.item.check_quotas(count_waitinglist=False, _cache=quota_cache, subevent=wle.subevent)
)
if availability[1] > 0:
try:
wle.send_voucher(quota_cache, user=user)
sent += 1
except WaitingListException: # noqa
with event.lock():
for wle in qs:
if (wle.item, wle.variation) in gone:
continue
# Reduce affected quotas in cache
for q in quotas:
quota_cache[q.pk] = (
quota_cache[q.pk][0] if quota_cache[q.pk][0] > 1 else 0,
quota_cache[q.pk][1] - 1
)
else:
gone.add((wle.item, wle.variation))
quotas = (wle.variation.quotas.filter(subevent=wle.subevent)
if wle.variation
else wle.item.quotas.filter(subevent=wle.subevent))
availability = (
wle.variation.check_quotas(count_waitinglist=False, _cache=quota_cache, subevent=wle.subevent)
if wle.variation
else wle.item.check_quotas(count_waitinglist=False, _cache=quota_cache, subevent=wle.subevent)
)
if availability[1] > 0:
try:
wle.send_voucher(quota_cache, user=user)
sent += 1
except WaitingListException: # noqa
continue
# Reduce affected quotas in cache
for q in quotas:
quota_cache[q.pk] = (
quota_cache[q.pk][0] if quota_cache[q.pk][0] > 1 else 0,
quota_cache[q.pk][1] - 1
)
else:
gone.add((wle.item, wle.variation))
return sent