374 lines
17 KiB
Python
374 lines
17 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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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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"""
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Unit Tests for network code
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"""
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import IPy
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import os
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from nova import context
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from nova import db
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from nova import exception
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from nova import flags
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from nova import log as logging
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from nova import test
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from nova import utils
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from nova.auth import manager
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FLAGS = flags.FLAGS
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LOG = logging.getLogger('nova.tests.network')
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class VlanNetworkTestCase(test.TestCase):
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"""Test cases for network code"""
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def setUp(self):
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super(VlanNetworkTestCase, self).setUp()
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# NOTE(vish): if you change these flags, make sure to change the
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# flags in the corresponding section in nova-dhcpbridge
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self.flags(connection_type='fake',
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fake_call=True,
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fake_network=True)
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self.manager = manager.AuthManager()
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self.user = self.manager.create_user('netuser', 'netuser', 'netuser')
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self.projects = []
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self.network = utils.import_object(FLAGS.network_manager)
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self.context = context.RequestContext(project=None, user=self.user)
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for i in range(FLAGS.num_networks):
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name = 'project%s' % i
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project = self.manager.create_project(name, 'netuser', name)
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self.projects.append(project)
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# create the necessary network data for the project
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user_context = context.RequestContext(project=self.projects[i],
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user=self.user)
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host = self.network.get_network_host(user_context.elevated())
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instance_ref = self._create_instance(0)
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self.instance_id = instance_ref['id']
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instance_ref = self._create_instance(1)
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self.instance2_id = instance_ref['id']
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def tearDown(self):
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# TODO(termie): this should really be instantiating clean datastores
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# in between runs, one failure kills all the tests
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db.instance_destroy(context.get_admin_context(), self.instance_id)
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db.instance_destroy(context.get_admin_context(), self.instance2_id)
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for project in self.projects:
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self.manager.delete_project(project)
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self.manager.delete_user(self.user)
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super(VlanNetworkTestCase, self).tearDown()
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def run(self, result=None):
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if(FLAGS.network_manager == 'nova.network.manager.VlanManager'):
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super(VlanNetworkTestCase, self).run(result)
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def _create_instance(self, project_num, mac=None):
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if not mac:
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mac = utils.generate_mac()
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project = self.projects[project_num]
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self.context._project = project
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self.context.project_id = project.id
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return db.instance_create(self.context,
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{'project_id': project.id,
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'mac_address': mac})
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def _create_address(self, project_num, instance_id=None):
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"""Create an address in given project num"""
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if instance_id is None:
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instance_id = self.instance_id
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self.context._project = self.projects[project_num]
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self.context.project_id = self.projects[project_num].id
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return self.network.allocate_fixed_ip(self.context, instance_id)
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def _deallocate_address(self, project_num, address):
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self.context._project = self.projects[project_num]
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self.context.project_id = self.projects[project_num].id
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self.network.deallocate_fixed_ip(self.context, address)
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def test_private_ipv6(self):
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"""Make sure ipv6 is OK"""
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if FLAGS.use_ipv6:
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instance_ref = self._create_instance(0)
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address = self._create_address(0, instance_ref['id'])
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network_ref = db.project_get_network(
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context.get_admin_context(),
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self.context.project_id)
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address_v6 = db.instance_get_fixed_address_v6(
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context.get_admin_context(),
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instance_ref['id'])
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self.assertEqual(instance_ref['mac_address'],
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utils.to_mac(address_v6))
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instance_ref2 = db.fixed_ip_get_instance_v6(
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context.get_admin_context(),
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address_v6)
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self.assertEqual(instance_ref['id'], instance_ref2['id'])
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self.assertEqual(address_v6,
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utils.to_global_ipv6(
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network_ref['cidr_v6'],
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instance_ref['mac_address']))
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self._deallocate_address(0, address)
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db.instance_destroy(context.get_admin_context(),
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instance_ref['id'])
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def test_public_network_association(self):
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"""Makes sure that we can allocaate a public ip"""
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# TODO(vish): better way of adding floating ips
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self.context._project = self.projects[0]
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self.context.project_id = self.projects[0].id
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pubnet = IPy.IP(flags.FLAGS.floating_range)
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address = str(pubnet[0])
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try:
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db.floating_ip_get_by_address(context.get_admin_context(), address)
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except exception.NotFound:
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db.floating_ip_create(context.get_admin_context(),
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{'address': address,
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'host': FLAGS.host})
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float_addr = self.network.allocate_floating_ip(self.context,
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self.projects[0].id)
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fix_addr = self._create_address(0)
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lease_ip(fix_addr)
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self.assertEqual(float_addr, str(pubnet[0]))
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self.network.associate_floating_ip(self.context, float_addr, fix_addr)
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address = db.instance_get_floating_address(context.get_admin_context(),
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self.instance_id)
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self.assertEqual(address, float_addr)
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self.network.disassociate_floating_ip(self.context, float_addr)
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address = db.instance_get_floating_address(context.get_admin_context(),
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self.instance_id)
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self.assertEqual(address, None)
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self.network.deallocate_floating_ip(self.context, float_addr)
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self.network.deallocate_fixed_ip(self.context, fix_addr)
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release_ip(fix_addr)
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db.floating_ip_destroy(context.get_admin_context(), float_addr)
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def test_allocate_deallocate_fixed_ip(self):
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"""Makes sure that we can allocate and deallocate a fixed ip"""
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address = self._create_address(0)
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self.assertTrue(is_allocated_in_project(address, self.projects[0].id))
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lease_ip(address)
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self._deallocate_address(0, address)
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# Doesn't go away until it's dhcp released
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self.assertTrue(is_allocated_in_project(address, self.projects[0].id))
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release_ip(address)
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self.assertFalse(is_allocated_in_project(address, self.projects[0].id))
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def test_side_effects(self):
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"""Ensures allocating and releasing has no side effects"""
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address = self._create_address(0)
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address2 = self._create_address(1, self.instance2_id)
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self.assertTrue(is_allocated_in_project(address, self.projects[0].id))
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self.assertTrue(is_allocated_in_project(address2, self.projects[1].id))
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self.assertFalse(is_allocated_in_project(address, self.projects[1].id))
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# Addresses are allocated before they're issued
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lease_ip(address)
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lease_ip(address2)
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self._deallocate_address(0, address)
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release_ip(address)
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self.assertFalse(is_allocated_in_project(address, self.projects[0].id))
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# First address release shouldn't affect the second
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self.assertTrue(is_allocated_in_project(address2, self.projects[1].id))
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self._deallocate_address(1, address2)
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release_ip(address2)
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self.assertFalse(is_allocated_in_project(address2,
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self.projects[1].id))
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def test_subnet_edge(self):
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"""Makes sure that private ips don't overlap"""
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first = self._create_address(0)
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lease_ip(first)
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instance_ids = []
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for i in range(1, FLAGS.num_networks):
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instance_ref = self._create_instance(i, mac=utils.generate_mac())
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instance_ids.append(instance_ref['id'])
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address = self._create_address(i, instance_ref['id'])
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instance_ref = self._create_instance(i, mac=utils.generate_mac())
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instance_ids.append(instance_ref['id'])
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address2 = self._create_address(i, instance_ref['id'])
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instance_ref = self._create_instance(i, mac=utils.generate_mac())
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instance_ids.append(instance_ref['id'])
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address3 = self._create_address(i, instance_ref['id'])
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lease_ip(address)
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lease_ip(address2)
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lease_ip(address3)
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self.context._project = self.projects[i]
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self.context.project_id = self.projects[i].id
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self.assertFalse(is_allocated_in_project(address,
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self.projects[0].id))
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self.assertFalse(is_allocated_in_project(address2,
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self.projects[0].id))
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self.assertFalse(is_allocated_in_project(address3,
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self.projects[0].id))
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self.network.deallocate_fixed_ip(self.context, address)
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self.network.deallocate_fixed_ip(self.context, address2)
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self.network.deallocate_fixed_ip(self.context, address3)
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release_ip(address)
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release_ip(address2)
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release_ip(address3)
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for instance_id in instance_ids:
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db.instance_destroy(context.get_admin_context(), instance_id)
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self.context._project = self.projects[0]
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self.context.project_id = self.projects[0].id
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self.network.deallocate_fixed_ip(self.context, first)
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self._deallocate_address(0, first)
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release_ip(first)
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def test_vpn_ip_and_port_looks_valid(self):
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"""Ensure the vpn ip and port are reasonable"""
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self.assert_(self.projects[0].vpn_ip)
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self.assert_(self.projects[0].vpn_port >= FLAGS.vpn_start)
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self.assert_(self.projects[0].vpn_port <= FLAGS.vpn_start +
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FLAGS.num_networks)
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def test_too_many_networks(self):
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"""Ensure error is raised if we run out of networks"""
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projects = []
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networks_left = (FLAGS.num_networks -
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db.network_count(context.get_admin_context()))
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for i in range(networks_left):
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project = self.manager.create_project('many%s' % i, self.user)
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projects.append(project)
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db.project_get_network(context.get_admin_context(), project.id)
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project = self.manager.create_project('last', self.user)
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projects.append(project)
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self.assertRaises(db.NoMoreNetworks,
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db.project_get_network,
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context.get_admin_context(),
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project.id)
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for project in projects:
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self.manager.delete_project(project)
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def test_ips_are_reused(self):
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"""Makes sure that ip addresses that are deallocated get reused"""
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address = self._create_address(0)
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lease_ip(address)
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self.network.deallocate_fixed_ip(self.context, address)
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release_ip(address)
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address2 = self._create_address(0)
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self.assertEqual(address, address2)
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lease_ip(address)
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self.network.deallocate_fixed_ip(self.context, address2)
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release_ip(address)
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def test_available_ips(self):
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"""Make sure the number of available ips for the network is correct
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The number of available IP addresses depends on the test
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environment's setup.
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Network size is set in test fixture's setUp method.
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There are ips reserved at the bottom and top of the range.
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services (network, gateway, CloudPipe, broadcast)
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"""
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network = db.project_get_network(context.get_admin_context(),
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self.projects[0].id)
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net_size = flags.FLAGS.network_size
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admin_context = context.get_admin_context()
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total_ips = (db.network_count_available_ips(admin_context,
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network['id']) +
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db.network_count_reserved_ips(admin_context,
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network['id']) +
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db.network_count_allocated_ips(admin_context,
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network['id']))
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self.assertEqual(total_ips, net_size)
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def test_too_many_addresses(self):
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"""Test for a NoMoreAddresses exception when all fixed ips are used.
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"""
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admin_context = context.get_admin_context()
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network = db.project_get_network(admin_context, self.projects[0].id)
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num_available_ips = db.network_count_available_ips(admin_context,
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network['id'])
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addresses = []
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instance_ids = []
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for i in range(num_available_ips):
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instance_ref = self._create_instance(0)
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instance_ids.append(instance_ref['id'])
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address = self._create_address(0, instance_ref['id'])
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addresses.append(address)
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lease_ip(address)
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ip_count = db.network_count_available_ips(context.get_admin_context(),
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network['id'])
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self.assertEqual(ip_count, 0)
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self.assertRaises(db.NoMoreAddresses,
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self.network.allocate_fixed_ip,
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self.context,
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'foo')
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for i in range(num_available_ips):
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self.network.deallocate_fixed_ip(self.context, addresses[i])
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release_ip(addresses[i])
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db.instance_destroy(context.get_admin_context(), instance_ids[i])
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ip_count = db.network_count_available_ips(context.get_admin_context(),
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network['id'])
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self.assertEqual(ip_count, num_available_ips)
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def is_allocated_in_project(address, project_id):
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"""Returns true if address is in specified project"""
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project_net = db.project_get_network(context.get_admin_context(),
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project_id)
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network = db.fixed_ip_get_network(context.get_admin_context(), address)
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instance = db.fixed_ip_get_instance(context.get_admin_context(), address)
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# instance exists until release
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return instance is not None and network['id'] == project_net['id']
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def binpath(script):
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"""Returns the absolute path to a script in bin"""
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return os.path.abspath(os.path.join(__file__, "../../../bin", script))
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def lease_ip(private_ip):
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"""Run add command on dhcpbridge"""
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network_ref = db.fixed_ip_get_network(context.get_admin_context(),
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private_ip)
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instance_ref = db.fixed_ip_get_instance(context.get_admin_context(),
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private_ip)
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cmd = "%s add %s %s fake" % (binpath('nova-dhcpbridge'),
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instance_ref['mac_address'],
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private_ip)
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env = {'DNSMASQ_INTERFACE': network_ref['bridge'],
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'TESTING': '1',
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'FLAGFILE': FLAGS.dhcpbridge_flagfile}
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(out, err) = utils.execute(cmd, addl_env=env)
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LOG.debug("ISSUE_IP: %s, %s ", out, err)
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def release_ip(private_ip):
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"""Run del command on dhcpbridge"""
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network_ref = db.fixed_ip_get_network(context.get_admin_context(),
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private_ip)
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instance_ref = db.fixed_ip_get_instance(context.get_admin_context(),
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private_ip)
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cmd = "%s del %s %s fake" % (binpath('nova-dhcpbridge'),
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instance_ref['mac_address'],
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private_ip)
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env = {'DNSMASQ_INTERFACE': network_ref['bridge'],
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'TESTING': '1',
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'FLAGFILE': FLAGS.dhcpbridge_flagfile}
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(out, err) = utils.execute(cmd, addl_env=env)
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LOG.debug("RELEASE_IP: %s, %s ", out, err)
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