def update_friends(start_key=None):
while (True):
try:
rec_friends = RecipeFriends.all()
if start_key:
rec_friends.filter('__key__ >', start_key)
rec_friends.order('__key__')
rec_friends = rec_friends.fetch(20)
if not rec_friends:
break
else:
start_key = None
for rec_friend in rec_friends:
rec_friend.friends = get_cached_friends(rec_friend.parent_key().parent().name()).keys()
rec_friend.put()
start_key = rec_friend.key()
except (DeadlineExceededError, Timeout), e:
deferred_lib.defer(update_friends, start_key)
except (CapabilityDisabledError), e:
break # End if there is no more time...
