b75a28c178
This patch removes the Neutron capability of creating database tables from sqlalchemy models for all those model classes for which a table is not found in the database schema. Migrations should be the official and only solution for creating and managing the Neutron db schema. This patch also adapts unit tests in order to ensure test schemas are still correctly created. DocImpact Update deployment documentation accordingly. Closes-Bug: #1207402 Change-Id: Ie4ee5507888ecad5f6dc32ce7a029c43014687a2 Co-Authored-By: Henry Gessau <gessau@cisco.com>
125 lines
5.0 KiB
Python
125 lines
5.0 KiB
Python
# Copyright 2014 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import mock
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from neutron.common import constants
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from neutron.common import topics
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from neutron import context
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from neutron.db import agents_db
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from neutron.db import agentschedulers_db
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from neutron.db import models_v2
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from neutron.openstack.common import timeutils
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from neutron.scheduler import dhcp_agent_scheduler
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from neutron.tests.unit import testlib_api
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class DhcpSchedulerTestCase(testlib_api.SqlTestCase):
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def setUp(self):
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super(DhcpSchedulerTestCase, self).setUp()
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self.ctx = context.get_admin_context()
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self.network_id = 'foo_network_id'
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self._save_networks([self.network_id])
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def _get_agents(self, hosts):
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return [
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agents_db.Agent(
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binary='neutron-dhcp-agent',
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host=host,
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topic=topics.DHCP_AGENT,
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configurations="",
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agent_type=constants.AGENT_TYPE_DHCP,
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created_at=timeutils.utcnow(),
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started_at=timeutils.utcnow(),
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heartbeat_timestamp=timeutils.utcnow())
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for host in hosts
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]
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def _save_agents(self, agents):
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for agent in agents:
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with self.ctx.session.begin(subtransactions=True):
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self.ctx.session.add(agent)
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def _save_networks(self, networks):
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for network_id in networks:
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with self.ctx.session.begin(subtransactions=True):
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self.ctx.session.add(models_v2.Network(id=network_id))
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def _test_schedule_bind_network(self, agents, network_id):
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scheduler = dhcp_agent_scheduler.ChanceScheduler()
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scheduler._schedule_bind_network(self.ctx, agents, network_id)
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results = (
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self.ctx.session.query(agentschedulers_db.NetworkDhcpAgentBinding).
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filter_by(network_id=network_id).all())
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self.assertEqual(len(agents), len(results))
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for result in results:
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self.assertEqual(network_id, result.network_id)
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def test_schedule_bind_network_single_agent(self):
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agents = self._get_agents(['host-a'])
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self._save_agents(agents)
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self._test_schedule_bind_network(agents, self.network_id)
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def test_schedule_bind_network_multi_agents(self):
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agents = self._get_agents(['host-a', 'host-b'])
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self._save_agents(agents)
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self._test_schedule_bind_network(agents, self.network_id)
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def test_schedule_bind_network_multi_agent_fail_one(self):
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agents = self._get_agents(['host-a'])
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self._save_agents(agents)
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self._test_schedule_bind_network(agents, self.network_id)
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with mock.patch.object(dhcp_agent_scheduler.LOG, 'info') as fake_log:
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self._test_schedule_bind_network(agents, self.network_id)
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self.assertEqual(1, fake_log.call_count)
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def test_auto_schedule_networks_no_networks(self):
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plugin = mock.MagicMock()
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plugin.get_networks.return_value = []
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scheduler = dhcp_agent_scheduler.ChanceScheduler()
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self.assertFalse(scheduler.auto_schedule_networks(plugin,
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self.ctx, "host-a"))
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def test_auto_schedule_networks(self):
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plugin = mock.MagicMock()
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plugin.get_subnets.return_value = [{"network_id": self.network_id,
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"enable_dhcp": True}]
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agents = self._get_agents(['host-a'])
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self._save_agents(agents)
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scheduler = dhcp_agent_scheduler.ChanceScheduler()
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self.assertTrue(scheduler.auto_schedule_networks(plugin,
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self.ctx, "host-a"))
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results = (
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self.ctx.session.query(agentschedulers_db.NetworkDhcpAgentBinding)
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.all())
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self.assertEqual(1, len(results))
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def test_auto_schedule_networks_network_already_scheduled(self):
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plugin = mock.MagicMock()
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plugin.get_subnets.return_value = [{"network_id": self.network_id,
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"enable_dhcp": True}]
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agents = self._get_agents(['host-a'])
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self._save_agents(agents)
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scheduler = dhcp_agent_scheduler.ChanceScheduler()
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self._test_schedule_bind_network(agents, self.network_id)
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self.assertTrue(scheduler.auto_schedule_networks(plugin,
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self.ctx, "host-a"))
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results = (
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self.ctx.session.query(agentschedulers_db.NetworkDhcpAgentBinding)
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.all())
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self.assertEqual(1, len(results))
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