Make request_spec.spec MediumText
request_spec.instance_group.members is a list of instance UUIDs. It can get so long that it overflows its TEXT column. This patch changes request_spec.spec to MEDIUMTEXT. NOTE(artom): Conflicts in nova/tests/functional/db/api/test_migrations.py because of backport migration renumbering. Also the uuids module isn't in newton so a hard-coded uuid is used. NOTE(mriedem): Since this is a backport, this contains a release note not found in the original change on master. Change-Id: I6bf0fa19b72887803e77b66698587c2108c9372a Closes-bug: 1738094 (cherry picked from commit40d7433908
) (cherry picked from commit1cfcc40643
) (cherry picked from commit4f0ff43c79
)
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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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from sqlalchemy import MetaData
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from sqlalchemy import Table
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from nova.db.sqlalchemy import api_models
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def upgrade(migrate_engine):
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meta = MetaData()
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meta.bind = migrate_engine
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request_specs = Table('request_specs', meta, autoload=True)
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if request_specs.c.spec.type != api_models.MediumText():
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request_specs.c.spec.alter(type=api_models.MediumText())
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@ -167,7 +167,7 @@ class RequestSpec(API_BASE):
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id = Column(Integer, primary_key=True)
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instance_uuid = Column(String(36), nullable=False)
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spec = Column(Text, nullable=False)
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spec = Column(MediumText(), nullable=False)
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class Flavors(API_BASE):
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@ -36,6 +36,7 @@ import mock
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from oslo_db.sqlalchemy import test_base
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from oslo_db.sqlalchemy import test_migrations
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from oslo_db.sqlalchemy import utils as db_utils
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from oslo_serialization import jsonutils
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import sqlalchemy
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from sqlalchemy.engine import reflection
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@ -480,6 +481,36 @@ class NovaAPIMigrationsWalk(test_migrations.WalkVersionsMixin):
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self.assertEqual('{"uuid": "foo", "name": "bar"}',
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fake_build_req.instance)
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def _pre_upgrade_022(self, engine):
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request_specs = db_utils.get_table(engine, 'request_specs')
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# The spec value is a serialized json blob.
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spec = jsonutils.dumps(
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{"instance_group": {"id": 42,
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"members": ["uuid1",
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"uuid2",
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"uuid3"]}})
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fake_request_spec = {
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'id': 42, 'spec': spec,
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'instance_uuid': 'c65539ad-b7f5-43d8-934a-018d42424da8'}
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request_specs.insert().execute(fake_request_spec)
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def _check_022(self, engine, data):
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request_specs = db_utils.get_table(engine, 'request_specs')
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if engine.name == 'mysql':
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self.assertIsInstance(request_specs.c.spec.type,
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sqlalchemy.dialects.mysql.MEDIUMTEXT)
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expected_spec = {"instance_group": {"id": 42,
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"members": ["uuid1",
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"uuid2",
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"uuid3"]}}
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from_db_request_spec = request_specs.select(
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request_specs.c.id == 42).execute().first()
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self.assertEqual('c65539ad-b7f5-43d8-934a-018d42424da8',
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from_db_request_spec['instance_uuid'])
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db_spec = jsonutils.loads(from_db_request_spec['spec'])
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self.assertDictEqual(expected_spec, db_spec)
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class TestNovaAPIMigrationsWalkSQLite(NovaAPIMigrationsWalk,
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test_base.DbTestCase,
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@ -0,0 +1,11 @@
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---
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upgrade:
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- |
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This release contains a schema migration for the ``nova_api`` database
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in order to address bug 1738094:
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https://bugs.launchpad.net/nova/+bug/1738094
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The migration is optional and can be postponed if you have not been
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affected by the bug. The bug manifests itself through "Data too long for
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column 'spec'" database errors.
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