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* stub in poetry for pipenv * re-add tester image * add pre-commit / formatting * fix ghactions * revert test data whitespace, exclude tests/data * revert ws * decruft, rm tox/pipenv * install dev packages for base image * add lgtm config to force to py3
115 lines
3.6 KiB
Python
115 lines
3.6 KiB
Python
# Generated by Django 1.11.23 on 2019-12-10 12:55
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from django.db import migrations
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from django.db.models import Count
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from django.db.utils import IntegrityError
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def forwards_func(apps, schema_editor):
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"""
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since `local_asn` will no longer be included as part of the
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unique key for netfac we need to remove any potential dupes
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that may exist because of that
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We do this by setting the related network to be the network that
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matches the local_asn value
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"""
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NetworkFacility = apps.get_model("peeringdb_server", "NetworkFacility")
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Network = apps.get_model("peeringdb_server", "Network")
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removed_dupe = 0
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asn_missing = 0
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migrated = 0
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print("\nmigrating netfacs")
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for netfac in NetworkFacility.handleref.all():
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if netfac.local_asn != netfac.network.asn:
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# local_asn differs from related network asn
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# next check if the network facility we are about
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# to migrate already exists, if it does, skip it
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qset = NetworkFacility.handleref.filter(
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network__asn=netfac.local_asn,
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facility_id=netfac.facility_id,
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local_asn=netfac.local_asn,
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)
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if qset.exists():
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notes = "Removed duplicate netfac for AS{} @ fac{}".format(
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netfac.local_asn, netfac.facility_id
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)
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netfac.notes = notes
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netfac.status = "deleted"
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netfac.local_asn = None
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netfac.save()
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removed_dupe += 1
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continue
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net = Network.handleref.filter(asn=netfac.local_asn).first()
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if net and netfac.status == "ok":
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# set network object from local_asn
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if net.status != netfac.status:
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# network status doesnt match netfac status
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# we update netfac status to match as that is the least
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# destructive behaviour while allowing us to still
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# resolve the unique constraint conflict
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netfac.status = net.status
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print(
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"AS{}: netfac{} at facility {} has been moved to network AS{}, however status"
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" between the two was mismatching and has been corrected, "
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"but should be reviewed".format(
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netfac.network.asn, netfac.facility.id, netfac.id, net.asn
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)
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)
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netfac.network = net
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netfac.save()
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migrated += 1
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else:
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# could not find network with asn matching local_asn
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# in this case we should drop the netfac and log it
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notes = "AS{}: Could not correct non-existant local_asn AS{} @ fac{} ".format(
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netfac.network.asn, netfac.local_asn, netfac.facility.id
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)
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if netfac.status == "ok":
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print(notes)
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asn_missing += 1
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continue
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print(f"Changed related network for {migrated} netfacs")
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print(
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"Deleted {} netfacs for being dupes after removal of local_asn".format(
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removed_dupe
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)
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)
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print(
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"Found {} netfacs where network matching local_asn did not exist".format(
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asn_missing
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)
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)
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class Migration(migrations.Migration):
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dependencies = [
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("peeringdb_server", "0022_ixlan_remove_auto_increment"),
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]
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operations = [
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migrations.RunPython(forwards_func, migrations.RunPython.noop),
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]
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