zulip/zephyr/management/commands/dump_pointers.py

51 lines
1.8 KiB
Python
Executable File

from __future__ import absolute_import
from optparse import make_option
from django.core.management.base import BaseCommand
from zephyr.models import Realm, UserProfile, Message, UserMessage, \
get_user_profile_by_email
from zephyr.lib.timestamp import datetime_to_timestamp, timestamp_to_datetime
import simplejson
def dump():
pointers = []
for u in UserProfile.objects.all():
pointer = u.pointer
if pointer != -1:
pub_date = Message.objects.get(id=pointer).pub_date
pointers.append((u.email, datetime_to_timestamp(pub_date)))
else:
pointers.append((u.email, -1))
file("dumped-pointers", "w").write(simplejson.dumps(pointers) + "\n")
def restore(change):
for (email, timestamp) in simplejson.loads(file("dumped-pointers").read()):
try:
u = get_user_profile_by_email(email)
except UserProfile.DoesNotExist:
print "Skipping...", email
continue
if timestamp == -1:
pointer = -1
else:
try:
pointer = UserMessage.objects.filter(user_profile=u,
message__pub_date__gte=timestamp_to_datetime(timestamp)).order_by("message")[0].message_id
except IndexError:
print "Alert...", email, timestamp
continue
if change:
u.pointer = pointer
u.save()
class Command(BaseCommand):
option_list = BaseCommand.option_list + (
make_option('--restore', default=False, action='store_true'),
make_option('--dry-run', '-n', default=False, action='store_true'),)
def handle(self, *args, **options):
if options["restore"]:
restore(change=not options['dry_run'])
else:
dump()