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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