openstack/neutron
Code Issues Proposed changes

Merge "Make the MTU attribute not nullable"

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This commit is contained in:
Zuul 2019-10-29 23:18:59 +00:00 committed by Gerrit Code Review
commit 843b5ffd9a
11 changed files with 138 additions and 27 deletions
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33
neutron/cmd/upgrade_checks/checks.py
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@ -22,6 +22,7 @@ from oslo_upgradecheck import upgradecheck
from neutron._i18n import _
from neutron.cmd.upgrade_checks import base
from neutron.db.models import agent as agent_model
from neutron.db import models_v2
def get_l3_agents():
@ -33,6 +34,13 @@ def get_l3_agents():
return query.all()
def get_networks():
ctx = context.get_admin_context()
query = model_query.get_collection_query(ctx,
models_v2.Network)
return query.all()
class CoreChecks(base.BaseChecks):
def get_checks(self):
@ -123,3 +131,28 @@ class CoreChecks(base.BaseChecks):
return upgradecheck.Result(
upgradecheck.Code.SUCCESS,
_("L3 agents can use multiple networks as external gateways."))
@staticmethod
def network_mtu_check(checker):
if not cfg.CONF.database.connection:
return upgradecheck.Result(
upgradecheck.Code.WARNING,
_("Database connection string is not set. Check of 'mtu' in "
"networks can't be done"))
networks_with_empty_mtu_attr = []
for network in get_networks():
mtu = network.get('mtu', None)
if not mtu:
networks_with_empty_mtu_attr.append(network.get("id"))
if networks_with_empty_mtu_attr:
networks_list = ", ".join(networks_with_empty_mtu_attr)
return upgradecheck.Result(
upgradecheck.Code.WARNING,
_("The 'mtu' attribute of networks %s are not set "
"This attribute can't be null now.") % networks_list)
else:
return upgradecheck.Result(
upgradecheck.Code.SUCCESS,
_("The 'mtu' attribute of all networks are set."))

2
neutron/db/db_base_plugin_v2.py
View File

@ -404,7 +404,7 @@ class NeutronDbPluginV2(db_base_plugin_common.DbBasePluginCommon,
args = {'tenant_id': n['tenant_id'],
'id': n.get('id') or uuidutils.generate_uuid(),
'name': n['name'],
'mtu': n.get('mtu'),
'mtu': n.get('mtu', constants.DEFAULT_NETWORK_MTU),
'admin_state_up': n['admin_state_up'],
'status': n.get('status', constants.NET_STATUS_ACTIVE),
'description': n.get('description')}

2
neutron/db/migration/alembic_migrations/versions/EXPAND_HEAD
View File

@ -1 +1 @@
c3e9d13c4367
86274d77933e

55
neutron/db/migration/alembic_migrations/versions/ussuri/expand/86274d77933e_change_mtu_to_not_null.py Normal file
View File

@ -0,0 +1,55 @@
# Copyright 2019 OpenStack Foundation
#
# 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.
#
from alembic import op
from neutron_lib import constants
import sqlalchemy as sa
"""change_mtu_to_not_null
Revision ID: 86274d77933e
Revises: c3e9d13c4367
Create Date: 2019-08-30 15:52:30.015146
"""
# revision identifiers, used by Alembic.
revision = '86274d77933e'
down_revision = 'c3e9d13c4367'
networks = sa.Table(
'networks', sa.MetaData(),
sa.Column('id', sa.String(length=36), nullable=False),
sa.Column('mtu', sa.Integer(), nullable=True))
def upgrade_existing_records():
session = sa.orm.Session(bind=op.get_bind())
with session.begin(subtransactions=True):
for row in session.query(networks):
if row[1] is None:
session.execute(networks.update().values(
mtu=constants.DEFAULT_NETWORK_MTU).where(
networks.c.id == row[0]))
session.commit()
def upgrade():
upgrade_existing_records()
op.alter_column('networks', 'mtu', nullable=False,
server_default=str(constants.DEFAULT_NETWORK_MTU),
existing_type=sa.INTEGER())

6
neutron/db/models_v2.py
View File

@ -268,9 +268,9 @@ class Network(standard_attr.HasStandardAttributes, model_base.BASEV2,
lazy='subquery',
cascade='all, delete, delete-orphan')
availability_zone_hints = sa.Column(sa.String(255))
# TODO(ihrachys) provide data migration path to fill in mtus for existing
# networks in Queens when all controllers run Pike+ code
mtu = sa.Column(sa.Integer, nullable=True)
mtu = sa.Column(sa.Integer, nullable=False,
default=constants.DEFAULT_NETWORK_MTU,
server_default=str(constants.DEFAULT_NETWORK_MTU))
dhcp_agents = orm.relationship(
'Agent', lazy='subquery', viewonly=True,
secondary=ndab_model.NetworkDhcpAgentBinding.__table__)

15
neutron/objects/network.py
View File

@ -14,7 +14,9 @@
from neutron_lib.api.definitions import availability_zone as az_def
from neutron_lib.api.validators import availability_zone as az_validator
from neutron_lib import constants
from oslo_utils import versionutils
from oslo_versionedobjects import exception
from oslo_versionedobjects import fields as obj_fields
import sqlalchemy as sa
@ -214,7 +216,8 @@ class ExternalNetwork(base.NeutronDbObject):
@base.NeutronObjectRegistry.register
class Network(rbac_db.NeutronRbacObject):
# Version 1.0: Initial version
VERSION = '1.0'
# Version 1.1: Changed 'mtu' to be not nullable
VERSION = '1.1'
rbac_db_cls = NetworkRBAC
db_model = models_v2.Network
@ -231,7 +234,7 @@ class Network(rbac_db.NeutronRbacObject):
nullable=True),
'shared': obj_fields.BooleanField(default=False),
'mtu': obj_fields.IntegerField(nullable=True),
'mtu': obj_fields.IntegerField(default=constants.DEFAULT_NETWORK_MTU),
# TODO(ihrachys): consider exposing availability zones
@ -344,6 +347,14 @@ class Network(rbac_db.NeutronRbacObject):
# TODO(ihrachys): provide actual implementation
return set()
def obj_make_compatible(self, primitive, target_version):
_target_version = versionutils.convert_version_to_tuple(target_version)
if _target_version >= (1, 1):
if primitive['mtu'] is None:
# mtu will not be nullable after
raise exception.IncompatibleObjectVersion(
objver=target_version, objname=self.__class__.__name__)
@base.NeutronObjectRegistry.register
class SegmentHostMapping(base.NeutronDbObject):

17
neutron/plugins/ml2/plugin.py
View File

@ -1144,12 +1144,6 @@ class Ml2Plugin(db_base_plugin_v2.NeutronDbPluginV2,
with db_api.CONTEXT_WRITER.using(context):
net_db = self._get_network(context, id)
# NOTE(ihrachys) pre Pike networks may have null mtus; update them
# in database if needed
# TODO(ihrachys) remove in Queens+ when mtu is not nullable
if net_db.mtu is None:
net_db.mtu = self._get_network_mtu(net_db, validate=False)
net_data = self._make_network_dict(net_db, context=context)
self.type_manager.extend_network_dict_provider(context, net_data)
@ -1164,13 +1158,8 @@ class Ml2Plugin(db_base_plugin_v2.NeutronDbPluginV2,
nets_db = super(Ml2Plugin, self)._get_networks(
context, filters, None, sorts, limit, marker, page_reverse)
# NOTE(ihrachys) pre Pike networks may have null mtus; update them
# in database if needed
# TODO(ihrachys) remove in Queens+ when mtu is not nullable
net_data = []
for net in nets_db:
if net.mtu is None:
net.mtu = self._get_network_mtu(net, validate=False)
net_data.append(self._make_network_dict(net, context=context))
self.type_manager.extend_networks_dict_provider(context, net_data)
@ -1241,12 +1230,6 @@ class Ml2Plugin(db_base_plugin_v2.NeutronDbPluginV2,
result, net_db, ipam_sub = self._create_subnet_precommit(
context, subnet)
# NOTE(ihrachys) pre Pike networks may have null mtus; update them
# in database if needed
# TODO(ihrachys) remove in Queens+ when mtu is not nullable
if net_db['mtu'] is None:
net_db['mtu'] = self._get_network_mtu(net_db, validate=False)
self.extension_manager.process_create_subnet(
context, subnet[subnet_def.RESOURCE_NAME], result)
network = self._make_network_dict(net_db, context=context)

22
neutron/tests/unit/cmd/upgrade_checks/test_checks.py
View File

@ -106,3 +106,25 @@ class TestChecks(base.BaseTestCase):
self.assertIn('Host B', result.details)
self.assertNotIn('Host A', result.details)
self.assertNotIn('Host C', result.details)
def test_network_mtu_check_good(self):
networks = [
{'id': 'net-uuid-a', 'mtu': 1500},
{'id': 'net-uuid-b', 'mtu': 1450}
]
with mock.patch.object(checks, "get_networks", return_value=networks):
result = checks.CoreChecks.network_mtu_check(
mock.Mock())
self.assertEqual(Code.SUCCESS, result.code)
def test_network_mtu_check_bad(self):
networks = [
{'id': 'net-uuid-a', 'mtu': None},
{'id': 'net-uuid-b', 'mtu': 1500},
]
with mock.patch.object(checks, "get_networks", return_value=networks):
result = checks.CoreChecks.network_mtu_check(
mock.Mock())
self.assertEqual(Code.WARNING, result.code)
self.assertIn('net-uuid-a', result.details)
self.assertNotIn('net-uuid-b', result.details)

6
neutron/tests/unit/db/test_db_base_plugin_v2.py
View File

@ -6503,7 +6503,8 @@ class DbModelMixin(object):
with db_api.CONTEXT_WRITER.using(ctx):
network = models_v2.Network(name="net_net", status="OK",
admin_state_up=True,
project_id='fake_project')
project_id='fake_project',
mtu=1500)
ctx.session.add(network)
with db_api.autonested_transaction(ctx.session):
sg = sg_models.SecurityGroup(name='sg', description='sg')
@ -6516,7 +6517,8 @@ class DbModelMixin(object):
project_id=network.project_id,
target_tenant='*').create()
net2 = models_v2.Network(name="net_net2", status="OK",
admin_state_up=True)
admin_state_up=True,
mtu=1500)
ctx.session.add(net2)
pl = db_base_plugin_common.DbBasePluginCommon()
self.assertTrue(pl._make_network_dict(network, context=ctx)['shared'])

2
neutron/tests/unit/objects/test_objects.py
View File

@ -57,7 +57,7 @@ object_data = {
'MeteringLabel': '1.0-cc4b620a3425222447cbe459f62de533',
'MeteringLabelRule': '1.0-b5c5717e7bab8d1af1623156012a5842',
'Log': '1.0-6391351c0f34ed34375a19202f361d24',
'Network': '1.0-f2f6308f79731a767b92b26b0f4f3849',
'Network': '1.1-c3e9ecc0618ee934181d91b143a48901',
'NetworkDhcpAgentBinding': '1.1-d9443c88809ffa4c45a0a5a48134b54a',
'NetworkDNSDomain': '1.0-420db7910294608534c1e2e30d6d8319',
'NetworkPortSecurity': '1.0-b30802391a87945ee9c07582b4ff95e3',

5
releasenotes/notes/make-mtu-not-nullable-2b2765bc85379545.yaml Normal file
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@ -0,0 +1,5 @@
---
upgrade:
- |
The network ``mtu`` attribute is set to be non-nullable. If the ``mtu`` is
empty(create before Pike version), it is set to the default value of 1500.