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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
# Copyright (c) 2012 VMware, Inc.
#
# 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-related functions (start, reboot, etc).
"""
from nova import exception
from nova.openstack.common.gettextutils import _
from nova.openstack.common import log as logging
from nova.openstack.common import units
from nova import utils
from nova.virt.vmwareapi import vim_util
from nova.virt.vmwareapi import vm_util
LOG = logging.getLogger(__name__)
class Host(object):
"""
Implements host related operations.
"""
def __init__(self, session):
self._session = session
def host_power_action(self, host, action):
"""Reboots or shuts down the host."""
host_mor = vm_util.get_host_ref(self._session)
LOG.debug(_("%(action)s %(host)s"), {'action': action, 'host': host})
if action == "reboot":
host_task = self._session._call_method(
self._session._get_vim(),
"RebootHost_Task", host_mor,
force=False)
elif action == "shutdown":
host_task = self._session._call_method(
self._session._get_vim(),
"ShutdownHost_Task", host_mor,
force=False)
elif action == "startup":
host_task = self._session._call_method(
self._session._get_vim(),
"PowerUpHostFromStandBy_Task", host_mor,
timeoutSec=60)
self._session._wait_for_task(host, host_task)
def host_maintenance_mode(self, host, mode):
"""Start/Stop host maintenance window. On start, it triggers
guest VMs evacuation.
"""
host_mor = vm_util.get_host_ref(self._session)
LOG.debug(_("Set maintenance mod on %(host)s to %(mode)s"),
{'host': host, 'mode': mode})
if mode:
host_task = self._session._call_method(
self._session._get_vim(),
"EnterMaintenanceMode_Task",
host_mor, timeout=0,
evacuatePoweredOffVms=True)
else:
host_task = self._session._call_method(
self._session._get_vim(),
"ExitMaintenanceMode_Task",
host_mor, timeout=0)
self._session._wait_for_task(host, host_task)
def set_host_enabled(self, _host, enabled):
"""Sets the specified host's ability to accept new instances."""
pass
class HostState(object):
"""Manages information about the ESX host this compute
node is running on.
"""
def __init__(self, session, host_name):
super(HostState, self).__init__()
self._session = session
self._host_name = host_name
self._stats = {}
self.update_status()
def get_host_stats(self, refresh=False):
"""Return the current state of the host. If 'refresh' is
True, run the update first.
"""
if refresh or not self._stats:
self.update_status()
return self._stats
def update_status(self):
"""Update the current state of the host.
"""
host_mor = vm_util.get_host_ref(self._session)
summary = self._session._call_method(vim_util,
"get_dynamic_property",
host_mor,
"HostSystem",
"summary")
if summary is None:
return
try:
ds = vm_util.get_datastore_ref_and_name(self._session)
except exception.DatastoreNotFound:
ds = (None, None, 0, 0)
data = {}
data["vcpus"] = summary.hardware.numCpuThreads
data["cpu_info"] = \
{"vendor": summary.hardware.vendor,
"model": summary.hardware.cpuModel,
"topology": {"cores": summary.hardware.numCpuCores,
"sockets": summary.hardware.numCpuPkgs,
"threads": summary.hardware.numCpuThreads}
}
data["disk_total"] = ds[2] / units.Gi
data["disk_available"] = ds[3] / units.Gi
data["disk_used"] = data["disk_total"] - data["disk_available"]
data["host_memory_total"] = summary.hardware.memorySize / units.Mi
data["host_memory_free"] = data["host_memory_total"] - \
summary.quickStats.overallMemoryUsage
data["hypervisor_type"] = summary.config.product.name
data["hypervisor_version"] = utils.convert_version_to_int(
str(summary.config.product.version))
data["hypervisor_hostname"] = self._host_name
data["supported_instances"] = [('i686', 'vmware', 'hvm'),
('x86_64', 'vmware', 'hvm')]
self._stats = data
return data
class VCState(object):
"""Manages information about the VC host this compute
node is running on.
"""
def __init__(self, session, host_name, cluster):
super(VCState, self).__init__()
self._session = session
self._host_name = host_name
self._cluster = cluster
self._stats = {}
self.update_status()
def get_host_stats(self, refresh=False):
"""Return the current state of the host. If 'refresh' is
True, run the update first.
"""
if refresh or not self._stats:
self.update_status()
return self._stats
def update_status(self):
"""Update the current state of the cluster."""
# Get the datastore in the cluster
try:
ds = vm_util.get_datastore_ref_and_name(self._session,
self._cluster)
except exception.DatastoreNotFound:
ds = (None, None, 0, 0)
# Get cpu, memory stats from the cluster
stats = vm_util.get_stats_from_cluster(self._session, self._cluster)
about_info = self._session._call_method(vim_util, "get_about_info")
data = {}
data["vcpus"] = stats['cpu']['vcpus']
data["cpu_info"] = {"vendor": stats['cpu']['vendor'],
"model": stats['cpu']['model'],
"topology": {"cores": stats['cpu']['cores'],
"threads": stats['cpu']['vcpus']}}
data["disk_total"] = ds[2] / units.Gi
data["disk_available"] = ds[3] / units.Gi
data["disk_used"] = data["disk_total"] - data["disk_available"]
data["host_memory_total"] = stats['mem']['total']
data["host_memory_free"] = stats['mem']['free']
data["hypervisor_type"] = about_info.name
data["hypervisor_version"] = utils.convert_version_to_int(
str(about_info.version))
data["hypervisor_hostname"] = self._host_name
data["supported_instances"] = [('i686', 'vmware', 'hvm'),
('x86_64', 'vmware', 'hvm')]
self._stats = data
return data
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