2778b9fe4f
Blueprint: hyper-v-wmi-v2 The Hyper-V APIs are mainly based on WMI. The original 2008 Hyper-V release introduced the "root\virtualization" namespace which got superseded in Hyper-V Server / Windows Server 2012 by the "root\virtualization\v2" namespace (referred as V2 in the sources). The original namespace has been dropped in the upcoming Hyper-V 2012 R2 (currently available in preview), which means that the Grizzly code will not be compatible with it as is. The Hyper-V driver is structured with a clear decoupling between OS interaction classes (so called *utils modules and classes) and the agent's logic. This allows us to provide an implementation of the V2 API without impacting the rest of the agent's code, based on a factory module added to instantiate the proper version of the *utils classes: the original "V1" ones for versions of the OS predating 2012 and the newer "V2" ones starting from Hyper-V 2012 (Windows kernel version 6.2). Change-Id: I380d8c65715242d8a5b94b5061ebe4f30e6c2090
162 lines
6.7 KiB
Python
162 lines
6.7 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2013 Cloudbase Solutions SRL
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# All Rights Reserved.
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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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# @author: Alessandro Pilotti, Cloudbase Solutions Srl
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# @author: Claudiu Belu, Cloudbase Solutions Srl
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from neutron.plugins.hyperv.agent import utils
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class HyperVUtilsV2(utils.HyperVUtils):
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_EXTERNAL_PORT = 'Msvm_ExternalEthernetPort'
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_ETHERNET_SWITCH_PORT = 'Msvm_EthernetSwitchPort'
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_PORT_ALLOC_SET_DATA = 'Msvm_EthernetPortAllocationSettingData'
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_PORT_VLAN_SET_DATA = 'Msvm_EthernetSwitchPortVlanSettingData'
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_LAN_ENDPOINT = 'Msvm_LANEndpoint'
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_STATE_DISABLED = 3
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_OPERATION_MODE_ACCESS = 1
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_wmi_namespace = '//./root/virtualization/v2'
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def __init__(self):
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super(HyperVUtilsV2, self).__init__()
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def connect_vnic_to_vswitch(self, vswitch_name, switch_port_name):
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vnic = self._get_vnic_settings(switch_port_name)
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vswitch = self._get_vswitch(vswitch_name)
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port, found = self._get_switch_port_allocation(switch_port_name, True)
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port.HostResource = [vswitch.path_()]
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port.Parent = vnic.path_()
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if not found:
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vm = self._get_vm_from_res_setting_data(vnic)
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self._add_virt_resource(vm, port)
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else:
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self._modify_virt_resource(port)
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def _modify_virt_resource(self, res_setting_data):
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vs_man_svc = self._conn.Msvm_VirtualSystemManagementService()[0]
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(job_path, out_set_data, ret_val) = vs_man_svc.ModifyResourceSettings(
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ResourceSettings=[res_setting_data.GetText_(1)])
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self._check_job_status(ret_val, job_path)
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def _add_virt_resource(self, vm, res_setting_data):
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vs_man_svc = self._conn.Msvm_VirtualSystemManagementService()[0]
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(job_path, out_set_data, ret_val) = vs_man_svc.AddResourceSettings(
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vm.path_(), [res_setting_data.GetText_(1)])
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self._check_job_status(ret_val, job_path)
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def _remove_virt_resource(self, res_setting_data):
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vs_man_svc = self._conn.Msvm_VirtualSystemManagementService()[0]
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(job, ret_val) = vs_man_svc.RemoveResourceSettings(
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ResourceSettings=[res_setting_data.path_()])
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self._check_job_status(ret_val, job)
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def disconnect_switch_port(
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self, vswitch_name, switch_port_name, delete_port):
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"""Disconnects the switch port."""
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sw_port, found = self._get_switch_port_allocation(switch_port_name)
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if not sw_port:
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# Port not found. It happens when the VM was already deleted.
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return
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if delete_port:
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self._remove_virt_resource(sw_port)
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else:
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sw_port.EnabledState = self._STATE_DISABLED
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self._modify_virt_resource(sw_port)
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def _get_vswitch(self, vswitch_name):
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vswitch = self._conn.Msvm_VirtualEthernetSwitch(
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ElementName=vswitch_name)
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if not len(vswitch):
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raise utils.HyperVException(msg=_('VSwitch not found: %s') %
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vswitch_name)
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return vswitch[0]
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def _get_vswitch_external_port(self, vswitch):
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vswitch_ports = vswitch.associators(
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wmi_result_class=self._ETHERNET_SWITCH_PORT)
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for vswitch_port in vswitch_ports:
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lan_endpoints = vswitch_port.associators(
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wmi_result_class=self._LAN_ENDPOINT)
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if len(lan_endpoints):
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lan_endpoints = lan_endpoints[0].associators(
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wmi_result_class=self._LAN_ENDPOINT)
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if len(lan_endpoints):
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ext_port = lan_endpoints[0].associators(
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wmi_result_class=self._EXTERNAL_PORT)
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if ext_port:
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return vswitch_port
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def set_vswitch_port_vlan_id(self, vlan_id, switch_port_name):
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port_alloc, found = self._get_switch_port_allocation(switch_port_name)
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if not found:
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raise utils.HyperVException(
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msg=_('Port Alloc not found: %s') % switch_port_name)
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vs_man_svc = self._conn.Msvm_VirtualSystemManagementService()[0]
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vlan_settings = self._get_vlan_setting_data_from_port_alloc(port_alloc)
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if vlan_settings:
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# Removing the feature because it cannot be modified
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# due to a wmi exception.
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(job_path, ret_val) = vs_man_svc.RemoveFeatureSettings(
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FeatureSettings=[vlan_settings.path_()])
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self._check_job_status(ret_val, job_path)
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(vlan_settings, found) = self._get_vlan_setting_data(switch_port_name)
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vlan_settings.AccessVlanId = vlan_id
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vlan_settings.OperationMode = self._OPERATION_MODE_ACCESS
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(job_path, out, ret_val) = vs_man_svc.AddFeatureSettings(
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port_alloc.path_(), [vlan_settings.GetText_(1)])
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self._check_job_status(ret_val, job_path)
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def _get_vlan_setting_data_from_port_alloc(self, port_alloc):
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return self._get_first_item(port_alloc.associators(
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wmi_result_class=self._PORT_VLAN_SET_DATA))
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def _get_vlan_setting_data(self, switch_port_name, create=True):
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return self._get_setting_data(
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self._PORT_VLAN_SET_DATA,
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switch_port_name, create)
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def _get_switch_port_allocation(self, switch_port_name, create=False):
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return self._get_setting_data(
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self._PORT_ALLOC_SET_DATA,
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switch_port_name, create)
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def _get_setting_data(self, class_name, element_name, create=True):
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element_name = element_name.replace("'", '"')
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q = self._conn.query("SELECT * FROM %(class_name)s WHERE "
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"ElementName = '%(element_name)s'" %
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{"class_name": class_name,
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"element_name": element_name})
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data = self._get_first_item(q)
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found = data is not None
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if not data and create:
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data = self._get_default_setting_data(class_name)
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data.ElementName = element_name
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return data, found
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def _get_default_setting_data(self, class_name):
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return self._conn.query("SELECT * FROM %s WHERE InstanceID "
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"LIKE '%%\\Default'" % class_name)[0]
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def _get_first_item(self, obj):
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if obj:
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return obj[0]
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