83 lines
2.8 KiB
Python
83 lines
2.8 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License
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from nova.api.openstack import extensions
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from nova.api.openstack import wsgi
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from nova.api.openstack import xmlutil
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from nova import quota
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QUOTAS = quota.QUOTAS
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XMLNS = "http://docs.openstack.org/compute/ext/used_limits/api/v1.1"
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ALIAS = "os-used-limits"
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authorize = extensions.soft_extension_authorizer('compute', 'used_limits')
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class UsedLimitsTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('limits', selector='limits')
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root.set('{%s}usedLimits' % XMLNS, '%s:usedLimits' % ALIAS)
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return xmlutil.SlaveTemplate(root, 1, nsmap={ALIAS: XMLNS})
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class UsedLimitsController(wsgi.Controller):
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@staticmethod
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def _reserved(req):
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try:
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return int(req.GET['reserved'])
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except (ValueError, KeyError):
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return False
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@wsgi.extends
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def index(self, req, resp_obj):
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resp_obj.attach(xml=UsedLimitsTemplate())
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context = req.environ['nova.context']
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quotas = QUOTAS.get_project_quotas(context, context.project_id,
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usages=True)
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quota_map = {
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'totalRAMUsed': 'ram',
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'totalCoresUsed': 'cores',
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'totalInstancesUsed': 'instances',
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'totalFloatingIpsUsed': 'floating_ips',
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'totalSecurityGroupsUsed': 'security_groups',
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}
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used_limits = {}
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for display_name, quota in quota_map.iteritems():
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if quota in quotas:
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reserved = (quotas[quota]['reserved']
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if self._reserved(req) else 0)
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used_limits[display_name] = quotas[quota]['in_use'] + reserved
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resp_obj.obj['limits']['absolute'].update(used_limits)
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class Used_limits(extensions.ExtensionDescriptor):
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"""Provide data on limited resources that are being used."""
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name = "UsedLimits"
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alias = ALIAS
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namespace = XMLNS
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updated = "2012-07-13T00:00:00+00:00"
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def get_controller_extensions(self):
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controller = UsedLimitsController()
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limits_ext = extensions.ControllerExtension(self, 'limits',
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controller=controller)
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return [limits_ext]
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