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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 Cloudbase Solutions Srl
# All Rights Reserved.
#
# 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.
"""
Management class for host operations.
"""
import os
import platform
from oslo.config import cfg
from nova.openstack.common import jsonutils
from nova.openstack.common import log as logging
from nova.virt.hyperv import constants
from nova.virt.hyperv import hostutils
from nova.virt.hyperv import pathutils
CONF = cfg.CONF
CONF.import_opt('my_ip', 'nova.netconf')
LOG = logging.getLogger(__name__)
class HostOps(object):
def __init__(self):
self._stats = None
self._hostutils = hostutils.HostUtils()
self._pathutils = pathutils.PathUtils()
def _get_cpu_info(self):
"""Get the CPU information.
:returns: A dictionary containing the main properties
of the central processor in the hypervisor.
"""
cpu_info = dict()
processors = self._hostutils.get_cpus_info()
w32_arch_dict = constants.WMI_WIN32_PROCESSOR_ARCHITECTURE
cpu_info['arch'] = w32_arch_dict.get(processors[0]['Architecture'],
'Unknown')
cpu_info['model'] = processors[0]['Name']
cpu_info['vendor'] = processors[0]['Manufacturer']
topology = dict()
topology['sockets'] = len(processors)
topology['cores'] = processors[0]['NumberOfCores']
topology['threads'] = (processors[0]['NumberOfLogicalProcessors'] /
processors[0]['NumberOfCores'])
cpu_info['topology'] = topology
features = list()
for fkey, fname in constants.PROCESSOR_FEATURE.items():
if self._hostutils.is_cpu_feature_present(fkey):
features.append(fname)
cpu_info['features'] = features
return cpu_info
def _get_memory_info(self):
(total_mem_kb, free_mem_kb) = self._hostutils.get_memory_info()
total_mem_mb = total_mem_kb / 1024
free_mem_mb = free_mem_kb / 1024
return (total_mem_mb, free_mem_mb, total_mem_mb - free_mem_mb)
def _get_local_hdd_info_gb(self):
drive = os.path.splitdrive(self._pathutils.get_instances_dir())[0]
(size, free_space) = self._hostutils.get_volume_info(drive)
total_gb = size / (1024 ** 3)
free_gb = free_space / (1024 ** 3)
used_gb = total_gb - free_gb
return (total_gb, free_gb, used_gb)
def _get_hypervisor_version(self):
"""Get hypervisor version.
:returns: hypervisor version (ex. 12003)
"""
version = self._hostutils.get_windows_version().replace('.', '')
LOG.debug(_('Windows version: %s ') % version)
return version
def get_available_resource(self):
"""Retrieve resource info.
This method is called when nova-compute launches, and
as part of a periodic task.
:returns: dictionary describing resources
"""
LOG.debug(_('get_available_resource called'))
(total_mem_mb,
free_mem_mb,
used_mem_mb) = self._get_memory_info()
(total_hdd_gb,
free_hdd_gb,
used_hdd_gb) = self._get_local_hdd_info_gb()
cpu_info = self._get_cpu_info()
cpu_topology = cpu_info['topology']
vcpus = (cpu_topology['sockets'] *
cpu_topology['cores'] *
cpu_topology['threads'])
dic = {'vcpus': vcpus,
'memory_mb': total_mem_mb,
'memory_mb_used': used_mem_mb,
'local_gb': total_hdd_gb,
'local_gb_used': used_hdd_gb,
'hypervisor_type': "hyperv",
'hypervisor_version': self._get_hypervisor_version(),
'hypervisor_hostname': platform.node(),
'vcpus_used': 0,
'cpu_info': jsonutils.dumps(cpu_info)}
return dic
def _update_stats(self):
LOG.debug(_("Updating host stats"))
(total_mem_mb, free_mem_mb, used_mem_mb) = self._get_memory_info()
(total_hdd_gb,
free_hdd_gb,
used_hdd_gb) = self._get_local_hdd_info_gb()
data = {}
data["disk_total"] = total_hdd_gb
data["disk_used"] = used_hdd_gb
data["disk_available"] = free_hdd_gb
data["host_memory_total"] = total_mem_mb
data["host_memory_overhead"] = used_mem_mb
data["host_memory_free"] = free_mem_mb
data["host_memory_free_computed"] = free_mem_mb
data["supported_instances"] = [('i686', 'hyperv', 'hvm'),
('x86_64', 'hyperv', 'hvm')]
data["hypervisor_hostname"] = platform.node()
self._stats = data
def get_host_stats(self, refresh=False):
"""Return the current state of the host.
If 'refresh' is True, run the update first.
"""
LOG.debug(_("get_host_stats called"))
if refresh or not self._stats:
self._update_stats()
return self._stats
def host_power_action(self, host, action):
"""Reboots, shuts down or powers up the host."""
pass
def get_host_ip_addr(self):
host_ip = CONF.my_ip
if not host_ip:
# Return the first available address
host_ip = self._hostutils.get_local_ips()[0]
LOG.debug(_("Host IP address is: %s"), host_ip)
return host_ip
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