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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright (C) 2013 Red Hat, 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.
"""
Policy based configuration of libvirt objects
This module provides helper APIs for populating the config.py
classes based on common operational needs / policies
"""
def set_vif_guest_frontend_config(conf, mac, model, driver):
"""Populate a LibvirtConfigGuestInterface instance
with guest frontend details.
"""
conf.mac_addr = mac
if model is not None:
conf.model = model
if driver is not None:
conf.driver_name = driver
def set_vif_host_backend_bridge_config(conf, brname, tapname=None):
"""Populate a LibvirtConfigGuestInterface instance
with host backend details for a software bridge.
"""
conf.net_type = "bridge"
conf.source_dev = brname
if tapname:
conf.target_dev = tapname
conf.script = ""
def set_vif_host_backend_ethernet_config(conf, tapname):
"""Populate a LibvirtConfigGuestInterface instance
with host backend details for an externally configured
host device.
NB use of this configuration is discouraged by
libvirt project and will mark domains as 'tainted'.
"""
conf.net_type = "ethernet"
conf.target_dev = tapname
conf.script = ""
def set_vif_host_backend_ovs_config(conf, brname, interfaceid, tapname=None):
"""Populate a LibvirtConfigGuestInterface instance
with host backend details for an OpenVSwitch bridge.
"""
conf.net_type = "bridge"
conf.source_dev = brname
conf.vporttype = "openvswitch"
conf.add_vport_param("interfaceid", interfaceid)
if tapname:
conf.target_dev = tapname
conf.script = ""
def set_vif_host_backend_802qbg_config(conf, devname, managerid,
typeid, typeidversion,
instanceid, tapname=None):
"""Populate a LibvirtConfigGuestInterface instance
with host backend details for an 802.1qbg device.
"""
conf.net_type = "direct"
conf.source_dev = devname
conf.source_mode = "vepa"
conf.vporttype = "802.1Qbg"
conf.add_vport_param("managerid", managerid)
conf.add_vport_param("typeid", typeid)
conf.add_vport_param("typeidversion", typeidversion)
conf.add_vport_param("instanceid", instanceid)
if tapname:
conf.target_dev = tapname
def set_vif_host_backend_802qbh_config(conf, devname, profileid,
tapname=None):
"""Populate a LibvirtConfigGuestInterface instance
with host backend details for an 802.1qbh device.
"""
conf.net_type = "direct"
conf.source_dev = devname
conf.source_mode = "vepa"
conf.vporttype = "802.1Qbh"
conf.add_vport_param("profileid", profileid)
if tapname:
conf.target_dev = tapname
def set_vif_host_backend_direct_config(conf, devname):
"""Populate a LibvirtConfigGuestInterface instance
with direct Interface.
"""
conf.net_type = "direct"
conf.source_mode = "passthrough"
conf.source_dev = devname
conf.model = "virtio"
def set_vif_bandwidth_config(conf, inst_type):
"""Config vif inbound/outbound bandwidth limit. parameters are
set in instance_type_extra_specs table, key is in the format
quota:vif_inbound_average.
"""
bandwidth_items = ['vif_inbound_average', 'vif_inbound_peak',
'vif_inbound_burst', 'vif_outbound_average', 'vif_outbound_peak',
'vif_outbound_burst']
for key, value in inst_type.get('extra_specs', {}).iteritems():
scope = key.split(':')
if len(scope) > 1 and scope[0] == 'quota':
if scope[1] in bandwidth_items:
setattr(conf, scope[1], value)
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