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dump_pointers: Use timestamps, not IDs, for transmitting the pointer. 

(imported from commit 9b51b9edc5b0bdfb2305c12a123d554811ec9e06)
This commit is contained in:
Tim Abbott 2012-12-13 11:15:06 -05:00
parent bda420a0f9
commit e330be7fc1
1 changed files with 14 additions and 3 deletions
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17
zephyr/management/commands/dump_pointers.py
View File

@ -1,17 +1,28 @@
from optparse import make_option
from django.core.management.base import BaseCommand
from zephyr.models import Realm, UserProfile
from zephyr.models import Realm, UserProfile, Message
from zephyr.lib.time import datetime_to_timestamp, timestamp_to_datetime
import simplejson
def dump():
pointers = []
for u in UserProfile.objects.select_related("user__email").all():
pointers.append((u.user.email, u.pointer))
pointer = u.pointer
if pointer != -1:
pub_date = Message.objects.get(id=pointer).pub_date
pointers.append((u.user.email, datetime_to_timestamp(pub_date)))
else:
pointers.append((u.user.email, -1))
file("dumped-pointers", "w").write(simplejson.dumps(pointers) + "\n")
def restore(change):
for (email, pointer) in simplejson.loads(file("dumped-pointers").read()):
for (email, timestamp) in simplejson.loads(file("dumped-pointers").read()):
u = UserProfile.objects.get(user__email__iexact=email)
if timestamp == -1:
pointer = -1
else:
pointer = Message.objects.filter(
pub_date__gte=timestamp_to_datetime(timestamp)).order_by("id")[0].id
print "%s: pointer %s => %s" % (email, u.pointer, pointer)
if change:
u.pointer = pointer