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Prevent duplicating instance links

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In receptor address post-save method:
- Fixed detecting if address was missing
a link from control nodes
- Use InstanceLink create_or_update to prevent
adding duplicate InstanceLink source and target
peers

In instance serializer create_or_update,
delete receptor addresses first before doing
instance create or update. This ensures that we don't
trigger unnecessary post-save methods that might
attempt to manipulate receptor addresses that
will just be removed later.

Signed-off-by: Seth Foster <fosterbseth@gmail.com>
This commit is contained in:
Seth Foster
2024-01-31 00:15:48 -05:00
committed by Seth Foster
parent b558397b67
commit 083c05f12a
2 changed files with 21 additions and 15 deletions
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27
awx/api/serializers.py
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@@ -5598,27 +5598,32 @@ class InstanceSerializer(BaseSerializer):
def create_or_update(self, validated_data, obj=None, create=True):
# create a managed receptor address if listener port is defined
kwargs = dict()
if 'listener_port' in validated_data:
kwargs['port'] = validated_data.pop('listener_port')
if 'peers_from_control_nodes' in validated_data:
kwargs['peers_from_control_nodes'] = validated_data.pop('peers_from_control_nodes')
port = validated_data.pop('listener_port', -1)
peers_from_control_nodes = validated_data.pop('peers_from_control_nodes', -1)
# delete the receptor address if the port is explicitly set to None
if obj and port == None:
obj.receptor_addresses.filter(address=obj.hostname).delete()
if create:
instance = super(InstanceSerializer, self).create(validated_data)
else:
instance = super(InstanceSerializer, self).update(obj, validated_data)
instance.refresh_from_db() # instance canonical address lookup is deferred, so needs to be reloaded
# delete the receptor address if the port is expolisitly set to None
if 'port' in kwargs and not kwargs['port']:
instance.receptor_addresses.filter(address=instance.hostname).delete()
# only create or update if port is defined in validated_data or already exists in the
# canonical address
# this prevents creating a receptor address if peers_from_control_nodes is in
# validated_data but a port is not set
elif kwargs and ('port' in kwargs or instance.canonical_address_port):
kwargs['canonical'] = True
instance.receptor_addresses.update_or_create(address=instance.hostname, defaults=kwargs)
if (port != None and port != -1) or instance.canonical_address_port:
kwargs = {}
if port != -1:
kwargs['port'] = port
if peers_from_control_nodes != -1:
kwargs['peers_from_control_nodes'] = peers_from_control_nodes
if kwargs:
kwargs['canonical'] = True
instance.receptor_addresses.update_or_create(address=instance.hostname, defaults=kwargs)
return instance