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#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from nova.api.openstack import common
from nova.api.openstack import wsgi
from nova.compute import api as compute
from nova.policies import server_topology as st_policies
class ServerTopologyController(wsgi.Controller):
def __init__(self, *args, **kwargs):
super(ServerTopologyController, self).__init__(*args, **kwargs)
self.compute_api = compute.API()
@wsgi.Controller.api_version("2.78")
@wsgi.expected_errors(404)
def index(self, req, server_id):
context = req.environ["nova.context"]
instance = common.get_instance(self.compute_api, context, server_id,
expected_attrs=['numa_topology',
'vcpu_model'])
context.can(st_policies.BASE_POLICY_NAME % 'index',
target={'project_id': instance.project_id})
host_policy = (st_policies.BASE_POLICY_NAME % 'host:index')
show_host_info = context.can(host_policy, fatal=False)
return self._get_numa_topology(context, instance, show_host_info)
def _get_numa_topology(self, context, instance, show_host_info):
if instance.numa_topology is None:
return {
'nodes': [],
'pagesize_kb': None
}
topo = {}
cells = []
pagesize_kb = None
for cell_ in instance.numa_topology.cells:
cell = {}
cell['vcpu_set'] = cell_.total_cpus
cell['siblings'] = cell_.siblings
cell['memory_mb'] = cell_.memory
if show_host_info:
cell['host_node'] = cell_.id
if cell_.cpu_pinning is None:
cell['cpu_pinning'] = {}
else:
cell['cpu_pinning'] = cell_.cpu_pinning
if cell_.pagesize:
pagesize_kb = cell_.pagesize
cells.append(cell)
topo['nodes'] = cells
topo['pagesize_kb'] = pagesize_kb
return topo
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