mirror of
https://github.com/ZwareBear/awx.git
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76 lines
3.0 KiB
Python
76 lines
3.0 KiB
Python
# Copyright (c) 2015 Ansible, Inc.
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# All Rights Reserved.
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import sys
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from datetime import timedelta
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from django.db import models
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from django.utils.timezone import now
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from django.db.models import Sum
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from django.conf import settings
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from awx.main.utils.filters import DynamicFilter
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class HostManager(models.Manager):
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"""Custom manager class for Hosts model."""
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def active_count(self):
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"""Return count of active, unique hosts for licensing."""
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try:
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return self.order_by('name').distinct('name').count()
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except NotImplementedError: # For unit tests only, SQLite doesn't support distinct('name')
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return len(set(self.values_list('name', flat=True)))
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def get_queryset(self):
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"""When the parent instance of the host query set has a `kind` of dynamic and a `host_filter`
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set. Use the `host_filter` to generate the queryset for the hosts.
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"""
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qs = super(HostManager, self).get_queryset()
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if hasattr(self, 'instance') and self.instance is not None:
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if hasattr(self.instance, 'kind') and self.instance.kind == 'dynamic':
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if hasattr(self.instance, 'host_filter') and self.instance.host_filter is not None:
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q = DynamicFilter.query_from_string(self.instance.host_filter)
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# If we are using host_filters, disable the core_filters, this allows
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# us to access all of the available Host entries, not just the ones associated
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# with a specific FK/relation.
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#
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# If we don't disable this, a filter of {'inventory': self.instance} gets automatically
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# injected by the related object mapper.
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self.core_filters = {}
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return qs.filter(q)
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return qs
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class InstanceManager(models.Manager):
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"""A custom manager class for the Instance model.
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Provides "table-level" methods including getting the currently active
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instance or role.
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"""
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def me(self):
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"""Return the currently active instance."""
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# If we are running unit tests, return a stub record.
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if settings.IS_TESTING(sys.argv):
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return self.model(id=1,
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hostname='localhost',
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uuid='00000000-0000-0000-0000-000000000000')
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node = self.filter(hostname=settings.CLUSTER_HOST_ID)
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if node.exists():
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return node[0]
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raise RuntimeError("No instance found with the current cluster host id")
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def active_count(self):
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"""Return count of active Tower nodes for licensing."""
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return self.all().count()
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def total_capacity(self):
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sumval = self.filter(modified__gte=now() - timedelta(seconds=settings.AWX_ACTIVE_NODE_TIME)) \
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.aggregate(total_capacity=Sum('capacity'))['total_capacity']
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return max(50, sumval)
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def my_role(self):
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# NOTE: TODO: Likely to repurpose this once standalone ramparts are a thing
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return "tower"
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