Spencer Yu
ff8a2b2b35
1.As mentioned in [1], we should avoid using six.iteritems to achieve iterators. We can use dict.items instead, as it will return iterators in PY3 as well. And dict.items/keys will more readable. 2.In py2, the performance about list should be negligible, see the link [2]. [1] https://wiki.openstack.org/wiki/Python3 [2] http://lists.openstack.org/pipermail/openstack-dev/2015-June/066391.html The patch list: API. Partial-Implements: blueprint replace-iteritems-with-items Change-Id: I63dceea8a83c1193af737d5615c32a42a9594a53
100 lines
3.3 KiB
Python
100 lines
3.3 KiB
Python
# 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 api_version_request
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from nova.api.openstack.api_version_request \
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import MIN_WITHOUT_PROXY_API_SUPPORT_VERSION
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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.policies import used_limits as ul_policies
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from nova import quota
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QUOTAS = quota.QUOTAS
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ALIAS = "os-used-limits"
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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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@extensions.expected_errors(())
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def index(self, req, resp_obj):
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context = req.environ['nova.context']
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project_id = self._project_id(context, req)
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quotas = QUOTAS.get_project_quotas(context, project_id, usages=True)
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if api_version_request.is_supported(
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req, min_version=MIN_WITHOUT_PROXY_API_SUPPORT_VERSION):
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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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'totalServerGroupsUsed': 'server_groups',
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}
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else:
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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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'totalServerGroupsUsed': 'server_groups',
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}
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used_limits = {}
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for display_name, key in quota_map.items():
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if key in quotas:
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reserved = (quotas[key]['reserved']
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if self._reserved(req) else 0)
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used_limits[display_name] = quotas[key]['in_use'] + reserved
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resp_obj.obj['limits']['absolute'].update(used_limits)
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def _project_id(self, context, req):
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if 'tenant_id' in req.GET:
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tenant_id = req.GET.get('tenant_id')
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target = {
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'project_id': tenant_id,
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'user_id': context.user_id
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}
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context.can(ul_policies.BASE_POLICY_NAME, target)
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return tenant_id
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return context.project_id
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class UsedLimits(extensions.V21APIExtensionBase):
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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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version = 1
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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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def get_resources(self):
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return []
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