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defensive code for getting instance added, also simplified nested if

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statements, rewrote some comments add a logger warning that the instance is being grabbed by the hostname and not the UUID
This commit is contained in:
Rebeccah
2021-09-17 15:39:43 -04:00
parent 55f2125a51
commit a9f4011a45
1 changed files with 10 additions and 9 deletions
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19
awx/main/managers.py
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@@ -129,24 +129,25 @@ class InstanceManager(models.Manager):
other_inst.save(update_fields=['ip_address'])
logger.warning("IP address {0} conflict detected, ip address unset for host {1}.".format(ip_address, other_hostname))
# get the instance based on the hostname
instance = self.filter(hostname=hostname)
# Check or update the existing uuid
if uuid is not None and uuid != UUID_DEFAULT:
if self.filter(uuid=uuid).exists():
instance = self.filter(uuid=uuid)
# Return existing instance that matches hostname or UUID (default to UUID)
if uuid is not None and uuid != UUID_DEFAULT and self.filter(uuid=uuid).exists():
instance = self.filter(uuid=uuid)
else:
# if instance was not retrieved by uuid and hostname was, use the hostname
instance = self.filter(hostname=hostname)
# Return existing instance
if instance.exists():
instance = instance.get()
instance = instance.first() # in the unusual occasion that there is more than one, only get one
update_fields = []
# if instance was retrieved by uuid and hostname has changed, update hostname
if instance.hostname != hostname:
logger.warning("passed in hostname {0} is different from the original hostname {1}, updating to {0}".format(hostname, instance.hostname))
instance.hostname = hostname
update_fields.append('hostname')
# if any other fields are to be updated
if instance.ip_address != ip_address:
instance.ip_address = ip_address
update_fields.append('ip_address')
if instance.node_type != node_type:
instance.node_type = node_type
update_fields.append('node_type')