111 lines
3.6 KiB
Python
111 lines
3.6 KiB
Python
# Copyright 2015 Huawei Technologies India Pvt Ltd, Inc.
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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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import abc
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import sys
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from neutron_lib import constants
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from oslo_versionedobjects import base as obj_base
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from oslo_versionedobjects import fields as obj_fields
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import six
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from neutron.common import utils
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from neutron.db import api as db_api
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from neutron.db.qos import models as qos_db_model
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from neutron.objects import base
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from neutron.objects import common_types
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from neutron.services.qos import qos_consts
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DSCP_MARK = 'dscp_mark'
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def get_rules(context, qos_policy_id):
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all_rules = []
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with db_api.autonested_transaction(context.session):
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for rule_type in qos_consts.VALID_RULE_TYPES:
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rule_cls_name = 'Qos%sRule' % utils.camelize(rule_type)
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rule_cls = getattr(sys.modules[__name__], rule_cls_name)
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rules = rule_cls.get_objects(context, qos_policy_id=qos_policy_id)
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all_rules.extend(rules)
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return all_rules
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@six.add_metaclass(abc.ABCMeta)
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class QosRule(base.NeutronDbObject):
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# Version 1.0: Initial version, only BandwidthLimitRule
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# 1.1: Added DscpMarkingRule
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#
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#NOTE(mangelajo): versions need to be handled from the top QosRule object
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# because it's the only reference QosPolicy can make
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# to them via obj_relationships version map
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VERSION = '1.1'
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fields = {
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'id': obj_fields.UUIDField(),
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'qos_policy_id': obj_fields.UUIDField()
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}
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fields_no_update = ['id', 'qos_policy_id']
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# should be redefined in subclasses
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rule_type = None
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def to_dict(self):
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dict_ = super(QosRule, self).to_dict()
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dict_['type'] = self.rule_type
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return dict_
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def should_apply_to_port(self, port):
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"""Check whether a rule can be applied to a specific port.
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This function has the logic to decide whether a rule should
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be applied to a port or not, depending on the source of the
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policy (network, or port). Eventually rules could override
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this method, or we could make it abstract to allow different
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rule behaviour.
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"""
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is_network_rule = self.qos_policy_id != port[qos_consts.QOS_POLICY_ID]
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is_network_device_port = any(port['device_owner'].startswith(prefix)
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for prefix
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in constants.DEVICE_OWNER_PREFIXES)
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return not (is_network_rule and is_network_device_port)
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@obj_base.VersionedObjectRegistry.register
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class QosBandwidthLimitRule(QosRule):
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db_model = qos_db_model.QosBandwidthLimitRule
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fields = {
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'max_kbps': obj_fields.IntegerField(nullable=True),
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'max_burst_kbps': obj_fields.IntegerField(nullable=True)
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}
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rule_type = qos_consts.RULE_TYPE_BANDWIDTH_LIMIT
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@obj_base.VersionedObjectRegistry.register
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class QosDscpMarkingRule(QosRule):
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db_model = qos_db_model.QosDscpMarkingRule
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fields = {
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DSCP_MARK: common_types.DscpMarkField(),
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}
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rule_type = qos_consts.RULE_TYPE_DSCP_MARK
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