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	This will make django automatically remove them when we run squashmigrations. There are still some RunSQL statements which we will have to take care of manually.
		
			
				
	
	
		
			66 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			66 lines
		
	
	
		
			2.6 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
from django.db import migrations, models
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from django.db.backends.postgresql.schema import DatabaseSchemaEditor
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from django.db.migrations.state import StateApps
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from django.db.models import Max
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from django.utils.timezone import now as timezone_now
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def backfill_subscription_log_events(apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
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    migration_time = timezone_now()
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    RealmAuditLog = apps.get_model('zerver', 'RealmAuditLog')
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    Subscription = apps.get_model('zerver', 'Subscription')
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    Message = apps.get_model('zerver', 'Message')
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    objects_to_create = []
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    subs_query = Subscription.objects.select_related(
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        "user_profile", "user_profile__realm", "recipient").filter(recipient__type=2)
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    for sub in subs_query:
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        entry = RealmAuditLog(
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            realm=sub.user_profile.realm,
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            modified_user=sub.user_profile,
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            modified_stream_id=sub.recipient.type_id,
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            event_last_message_id=0,
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            event_type='subscription_created',
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            event_time=migration_time,
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            backfilled=True)
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        objects_to_create.append(entry)
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    RealmAuditLog.objects.bulk_create(objects_to_create)
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    objects_to_create = []
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    event_last_message_id = Message.objects.aggregate(Max('id'))['id__max']
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    migration_time_for_deactivation = timezone_now()
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    for sub in subs_query.filter(active=False):
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        entry = RealmAuditLog(
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            realm=sub.user_profile.realm,
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            modified_user=sub.user_profile,
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            modified_stream_id=sub.recipient.type_id,
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            event_last_message_id=event_last_message_id,
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            event_type='subscription_deactivated',
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            event_time=migration_time_for_deactivation,
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            backfilled=True)
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        objects_to_create.append(entry)
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    RealmAuditLog.objects.bulk_create(objects_to_create)
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    objects_to_create = []
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def reverse_code(apps: StateApps, schema_editor: DatabaseSchemaEditor) -> None:
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    RealmAuditLog = apps.get_model('zerver', 'RealmAuditLog')
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    RealmAuditLog.objects.filter(event_type='subscription_created').delete()
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    RealmAuditLog.objects.filter(event_type='subscription_deactivated').delete()
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class Migration(migrations.Migration):
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    dependencies = [
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        ('zerver', '0092_create_scheduledemail'),
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    ]
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    operations = [
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        migrations.AddField(
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            model_name='realmauditlog',
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            name='event_last_message_id',
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            field=models.IntegerField(null=True),
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        ),
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        migrations.RunPython(backfill_subscription_log_events,
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                             reverse_code=reverse_code, elidable=True),
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    ]
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