sg101: gpp/core/management/commands/max

Fix the max users online statistic as per ticket #90.

comparison

equal deleted inserted replaced

-:a3b47d0f4df1
+:dcc929973bba
+"""
+max_users is a custom manage.py command.
+It is intended to be called from a cron job to calculate the maximum
+number of users online statistic.
+"""
+import datetime
+from django.core.management.base import NoArgsCommand
+from core.models import UserLastVisit, AnonLastVisit, Statistic
+class Command(NoArgsCommand):
+help = "Run periodically to compute the max users online statistic."
+def handle_noargs(self, **options):
+now = datetime.datetime.now()
+cut_off = now - datetime.timedelta(minutes=15)
+users = UserLastVisit.objects.filter(last_visit__gte=cut_off).count()
+guests = AnonLastVisit.objects.filter(last_visit__gte=cut_off).count()
+updated = False
+try:
+stat = Statistic.objects.get(pk=1)
+except Statistic.DoesNotExist:
+stat = Statistic(max_users=users,
+max_users_date=now,
+max_anon_users=guests,
+max_anon_users_date=now)
+updated=True
+else:
+if users > stat.max_users:
+stat.max_users = users
+stat.max_users_date = now
+updated=True
+if guests > stat.max_anon_users:
+stat.max_anon_users = guests
+stat.max_anon_users_date = now
+updated=True
+if updated:
+stat.save()

Mercurial > public > sg101