mirror of
https://github.com/retspen/webvirtcloud
synced 2026-11-09 19:56:48 +00:00
94 lines
3.6 KiB
Python
94 lines
3.6 KiB
Python
# Generated by Django 4.2.30 on 2026-09-27 10:57
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from django.db import migrations, models
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def deduplicate_instances(apps, schema_editor):
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Instance = apps.get_model('instances', 'Instance')
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UserInstance = apps.get_model('accounts', 'UserInstance')
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from django.db.models import Count, Q
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import uuid as uuid_mod
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# Assign distinct UUIDs to legacy/corrupt records with null, empty, or whitespace UUIDs
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# so they are not treated as duplicates or collapsed together
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empty_uuid_instances = Instance.objects.filter(
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Q(uuid__isnull=True) | Q(uuid="") | Q(uuid__regex=r"^\s*$")
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)
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for inst in empty_uuid_instances:
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inst.uuid = str(uuid_mod.uuid4())
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inst.save(update_fields=['uuid'])
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duplicates = (
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Instance.objects.exclude(uuid__isnull=True).exclude(uuid="")
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.values('compute_id', 'uuid')
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.annotate(count=Count('id'))
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.filter(count__gt=1)
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)
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for item in duplicates:
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instances = list(Instance.objects.filter(
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compute_id=item['compute_id'],
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uuid=item['uuid']
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).order_by('-id'))
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primary = instances[0]
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# Preserve is_template and non-default drbd across duplicate rows
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merged_is_template = any(getattr(inst, 'is_template', False) for inst in instances)
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non_default_drbd = next((inst.drbd for inst in instances if inst.drbd and inst.drbd != 'None'), None)
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updated = False
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if primary.is_template != merged_is_template:
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primary.is_template = merged_is_template
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updated = True
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if non_default_drbd and primary.drbd != non_default_drbd:
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primary.drbd = non_default_drbd
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updated = True
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if updated:
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primary.save()
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for dup in instances[1:]:
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# Reassign or merge UserInstance relationships
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for ui in UserInstance.objects.filter(instance=dup):
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existing = UserInstance.objects.filter(instance=primary, user=ui.user).first()
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if not existing:
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ui.instance = primary
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ui.save()
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else:
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# Merge permissions with logical OR so no stronger permission is lost
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updated = False
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if ui.is_change and not existing.is_change:
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existing.is_change = True
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updated = True
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if ui.is_delete and not existing.is_delete:
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existing.is_delete = True
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updated = True
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if ui.is_vnc and not existing.is_vnc:
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existing.is_vnc = True
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updated = True
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if updated:
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existing.save()
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ui.delete()
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dup.delete()
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class Migration(migrations.Migration):
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dependencies = [
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('instances', '0011_createinstance_migrateinstance'),
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('accounts', '0001_initial'),
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]
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operations = [
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migrations.RunPython(deduplicate_instances, migrations.RunPython.noop),
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migrations.AlterField(
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model_name='flavor',
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name='id',
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field=models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID'),
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),
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migrations.AlterField(
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model_name='instance',
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name='id',
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field=models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID'),
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),
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migrations.AddConstraint(
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model_name='instance',
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constraint=models.UniqueConstraint(fields=('compute', 'uuid'), name='unique_compute_uuid'),
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),
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]
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