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66 lines
2.8 KiB
Python
66 lines
2.8 KiB
Python
# Copyright (c) 2014 Ansible, Inc.
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# All Rights Reserved
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from django.conf import settings
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from django.core.management.base import BaseCommand, CommandError
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from awx.main.management.commands._base_instance import BaseCommandInstance
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instance_str = BaseCommandInstance.instance_str
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from awx.main.models import Instance
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class Command(BaseCommandInstance):
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"""Internal tower command.
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Regsiter this instance with the database for HA tracking.
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This command is idempotent.
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This command will error out in the following conditions:
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* Attempting to register a secondary machine with no primary machines.
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* Attempting to register a primary instance when a different primary
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instance exists.
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* Attempting to re-register an instance with changed values.
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"""
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def __init__(self):
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super(Command, self).__init__()
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self.include_options_roles()
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self.include_option_hostname_set()
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def handle(self, *args, **options):
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super(Command, self).handle(*args, **options)
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uuid = self.get_UUID()
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# Is there an existing record for this machine? If so, retrieve that record and look for issues.
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try:
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instance = Instance.objects.get(uuid=uuid)
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if instance.hostname != self.get_option_hostname():
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raise CommandError('Instance already registered with a different hostname %s.' % instance_str(instance))
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print("Instance already registered %s" % instance_str(instance))
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except Instance.DoesNotExist:
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# Get a status on primary machines (excluding this one, regardless of its status).
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other_instances = Instance.objects.exclude(uuid=uuid)
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primaries = other_instances.filter(primary=True).count()
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# If this instance is being set to primary and a *different* primary machine alreadyexists, error out.
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if self.is_option_primary() and primaries:
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raise CommandError('Another instance is already registered as primary.')
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# Lastly, if there are no primary machines at all, then don't allow this to be registered as a secondary machine.
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if self.is_option_secondary() and not primaries:
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raise CommandError('Unable to register a secondary machine until another primary machine has been registered.')
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# Okay, we've checked for appropriate errata; perform the registration.
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instance = Instance(uuid=uuid, primary=self.is_option_primary(), hostname=self.get_option_hostname())
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instance.save()
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# If this is a primary instance, update projects.
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if instance.primary:
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self.update_projects(instance)
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# Done!
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print('Successfully registered instance %s.' % instance_str(instance))
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