feat: Add in batching and a delay to backpopulate user tours

This should help memory usage when running the job

lms/djangoapps/user_tours/management/commands/backpopulate_user_tours.py

@@ -1,5 +1,7 @@
 """ Management command to backpopulate User Tours. """
 
+import time
+
 from django.contrib.auth import get_user_model
 from django.core.management.base import BaseCommand
 
@@ -16,6 +18,10 @@ class Command(BaseCommand):
     """
     help = 'Creates or updates a row in the UserTour table for all users in the platform.'
 
+    def add_arguments(self, parser):
+        parser.add_argument('--batch-delay', type=float, default=1.0, help='Time delay in each iteration')
+        parser.add_argument('--batch-size', type=int, default=10000, help='Batch size')
+
     def handle(self, *args, **options):
         """
         Backpopulates UserTour objects for all existing users who don't already have a UserTour.
@@ -23,18 +29,22 @@ class Command(BaseCommand):
         If the user has any prior enrollments, we will treat them as an existing user,
         otherwise they will receive a new user treatment.
         """
-        for user in User.objects.filter(tour__isnull=True):
-            if CourseEnrollment.objects.filter(user=user).exists():
-                course_home_tour_status = UserTour.CourseHomeChoices.EXISTING_USER_TOUR
-                show_courseware_tour = False
-            else:
-                course_home_tour_status = UserTour.CourseHomeChoices.NEW_USER_TOUR
-                show_courseware_tour = True
+        batch_delay = options['batch_delay']
+        batch_size = options['batch_size']
+        while User.objects.filter(tour__isnull=True).exists():
+            time.sleep(batch_delay)
+            for user in User.objects.filter(tour__isnull=True)[:batch_size]:
+                if CourseEnrollment.objects.filter(user=user).exists():
+                    course_home_tour_status = UserTour.CourseHomeChoices.EXISTING_USER_TOUR
+                    show_courseware_tour = False
+                else:
+                    course_home_tour_status = UserTour.CourseHomeChoices.NEW_USER_TOUR
+                    show_courseware_tour = True
 
-            UserTour.objects.update_or_create(
-                user=user,
-                defaults={
-                    'course_home_tour_status': course_home_tour_status,
-                    'show_courseware_tour': show_courseware_tour,
-                },
-            )
+                UserTour.objects.update_or_create(
+                    user=user,
+                    defaults={
+                        'course_home_tour_status': course_home_tour_status,
+                        'show_courseware_tour': show_courseware_tour,
+                    },
+                )