433 lines
17 KiB
Python
433 lines
17 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 Rackspace
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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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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.network import manager as network_manager
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import mox
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FLAGS = flags.FLAGS
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LOG = logging.getLogger('nova.tests.network')
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HOST = "testhost"
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class FakeModel(dict):
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"""Represent a model from the db"""
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def __init__(self, *args, **kwargs):
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self.update(kwargs)
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def __getattr__(self, name):
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return self[name]
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networks = [{'id': 0,
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'label': 'test0',
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'injected': False,
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'multi_host': False,
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'cidr': '192.168.0.0/24',
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'cidr_v6': '2001:db8::/64',
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'gateway_v6': '2001:db8::1',
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'netmask_v6': '64',
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'netmask': '255.255.255.0',
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'bridge': 'fa0',
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'bridge_interface': 'fake_fa0',
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'gateway': '192.168.0.1',
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'broadcast': '192.168.0.255',
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'dns1': '192.168.0.1',
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'dns2': '192.168.0.2',
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'vlan': None,
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'host': None,
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'project_id': 'fake_project',
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'vpn_public_address': '192.168.0.2'},
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{'id': 1,
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'label': 'test1',
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'injected': False,
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'multi_host': False,
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'cidr': '192.168.1.0/24',
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'cidr_v6': '2001:db9::/64',
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'gateway_v6': '2001:db9::1',
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'netmask_v6': '64',
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'netmask': '255.255.255.0',
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'bridge': 'fa1',
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'bridge_interface': 'fake_fa1',
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'gateway': '192.168.1.1',
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'broadcast': '192.168.1.255',
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'dns1': '192.168.0.1',
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'dns2': '192.168.0.2',
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'vlan': None,
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'host': None,
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'project_id': 'fake_project',
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'vpn_public_address': '192.168.1.2'}]
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fixed_ips = [{'id': 0,
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'network_id': 0,
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'address': '192.168.0.100',
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'instance_id': 0,
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'allocated': False,
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'virtual_interface_id': 0,
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'floating_ips': []},
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{'id': 0,
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'network_id': 1,
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'address': '192.168.1.100',
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'instance_id': 0,
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'allocated': False,
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'virtual_interface_id': 0,
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'floating_ips': []}]
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flavor = {'id': 0,
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'rxtx_cap': 3}
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floating_ip_fields = {'id': 0,
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'address': '192.168.10.100',
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'fixed_ip_id': 0,
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'project_id': None,
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'auto_assigned': False}
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vifs = [{'id': 0,
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'address': 'DE:AD:BE:EF:00:00',
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'network_id': 0,
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'network': FakeModel(**networks[0]),
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'instance_id': 0},
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{'id': 1,
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'address': 'DE:AD:BE:EF:00:01',
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'network_id': 1,
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'network': FakeModel(**networks[1]),
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'instance_id': 0}]
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class FlatNetworkTestCase(test.TestCase):
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def setUp(self):
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super(FlatNetworkTestCase, self).setUp()
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self.network = network_manager.FlatManager(host=HOST)
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self.network.db = db
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def test_get_instance_nw_info(self):
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self.mox.StubOutWithMock(db, 'fixed_ip_get_by_instance')
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self.mox.StubOutWithMock(db, 'virtual_interface_get_by_instance')
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self.mox.StubOutWithMock(db, 'instance_type_get')
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db.fixed_ip_get_by_instance(mox.IgnoreArg(),
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mox.IgnoreArg()).AndReturn(fixed_ips)
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db.virtual_interface_get_by_instance(mox.IgnoreArg(),
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mox.IgnoreArg()).AndReturn(vifs)
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db.instance_type_get(mox.IgnoreArg(),
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mox.IgnoreArg()).AndReturn(flavor)
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self.mox.ReplayAll()
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nw_info = self.network.get_instance_nw_info(None, 0, 0, None)
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self.assertTrue(nw_info)
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for i, nw in enumerate(nw_info):
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i8 = i + 8
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check = {'bridge': 'fa%s' % i,
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'cidr': '192.168.%s.0/24' % i,
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'cidr_v6': '2001:db%s::/64' % i8,
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'id': i,
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'multi_host': False,
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'injected': 'DONTCARE',
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'bridge_interface': 'fake_fa%s' % i,
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'vlan': None}
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self.assertDictMatch(nw[0], check)
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check = {'broadcast': '192.168.%s.255' % i,
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'dhcp_server': '192.168.%s.1' % i,
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'dns': 'DONTCARE',
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'gateway': '192.168.%s.1' % i,
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'gateway6': '2001:db%s::1' % i8,
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'ip6s': 'DONTCARE',
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'ips': 'DONTCARE',
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'label': 'test%s' % i,
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'mac': 'DE:AD:BE:EF:00:0%s' % i,
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'rxtx_cap': 'DONTCARE',
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'should_create_vlan': False,
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'should_create_bridge': False}
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self.assertDictMatch(nw[1], check)
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check = [{'enabled': 'DONTCARE',
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'ip': '2001:db%s::dcad:beff:feef:%s' % (i8, i),
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'netmask': '64'}]
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self.assertDictListMatch(nw[1]['ip6s'], check)
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check = [{'enabled': '1',
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'ip': '192.168.%s.100' % i,
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'netmask': '255.255.255.0'}]
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self.assertDictListMatch(nw[1]['ips'], check)
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class VlanNetworkTestCase(test.TestCase):
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def setUp(self):
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super(VlanNetworkTestCase, self).setUp()
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self.network = network_manager.VlanManager(host=HOST)
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self.network.db = db
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def test_vpn_allocate_fixed_ip(self):
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self.mox.StubOutWithMock(db, 'fixed_ip_associate')
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self.mox.StubOutWithMock(db, 'fixed_ip_update')
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self.mox.StubOutWithMock(db,
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'virtual_interface_get_by_instance_and_network')
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db.fixed_ip_associate(mox.IgnoreArg(),
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mox.IgnoreArg(),
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mox.IgnoreArg()).AndReturn('192.168.0.1')
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db.fixed_ip_update(mox.IgnoreArg(),
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mox.IgnoreArg(),
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mox.IgnoreArg())
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db.virtual_interface_get_by_instance_and_network(mox.IgnoreArg(),
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mox.IgnoreArg(), mox.IgnoreArg()).AndReturn({'id': 0})
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self.mox.ReplayAll()
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network = dict(networks[0])
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network['vpn_private_address'] = '192.168.0.2'
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self.network.allocate_fixed_ip(None, 0, network, vpn=True)
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def test_allocate_fixed_ip(self):
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self.mox.StubOutWithMock(db, 'fixed_ip_associate_pool')
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self.mox.StubOutWithMock(db, 'fixed_ip_update')
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self.mox.StubOutWithMock(db,
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'virtual_interface_get_by_instance_and_network')
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db.fixed_ip_associate_pool(mox.IgnoreArg(),
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mox.IgnoreArg(),
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mox.IgnoreArg()).AndReturn('192.168.0.1')
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db.fixed_ip_update(mox.IgnoreArg(),
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mox.IgnoreArg(),
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mox.IgnoreArg())
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db.virtual_interface_get_by_instance_and_network(mox.IgnoreArg(),
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mox.IgnoreArg(), mox.IgnoreArg()).AndReturn({'id': 0})
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self.mox.ReplayAll()
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network = dict(networks[0])
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network['vpn_private_address'] = '192.168.0.2'
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self.network.allocate_fixed_ip(None, 0, network)
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def test_create_networks_too_big(self):
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self.assertRaises(ValueError, self.network.create_networks, None,
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num_networks=4094, vlan_start=1)
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def test_create_networks_too_many(self):
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self.assertRaises(ValueError, self.network.create_networks, None,
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num_networks=100, vlan_start=1,
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cidr='192.168.0.1/24', network_size=100)
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class CommonNetworkTestCase(test.TestCase):
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class FakeNetworkManager(network_manager.NetworkManager):
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"""This NetworkManager doesn't call the base class so we can bypass all
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inherited service cruft and just perform unit tests.
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"""
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class FakeDB:
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def fixed_ip_get_by_instance(self, context, instance_id):
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return [dict(address='10.0.0.0'), dict(address='10.0.0.1'),
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dict(address='10.0.0.2')]
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def network_get_by_cidr(self, context, cidr):
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raise exception.NetworkNotFoundForCidr()
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def network_create_safe(self, context, net):
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fakenet = {}
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fakenet['id'] = 999
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return fakenet
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def network_get_all(self, context):
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raise exception.NoNetworksFound()
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def __init__(self):
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self.db = self.FakeDB()
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self.deallocate_called = None
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def deallocate_fixed_ip(self, context, address):
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self.deallocate_called = address
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def fake_create_fixed_ips(self, context, network_id):
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return None
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def test_remove_fixed_ip_from_instance(self):
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manager = self.FakeNetworkManager()
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manager.remove_fixed_ip_from_instance(None, 99, '10.0.0.1')
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self.assertEquals(manager.deallocate_called, '10.0.0.1')
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def test_remove_fixed_ip_from_instance_bad_input(self):
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manager = self.FakeNetworkManager()
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self.assertRaises(exception.FixedIpNotFoundForSpecificInstance,
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manager.remove_fixed_ip_from_instance,
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None, 99, 'bad input')
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def test__validate_cidrs(self):
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manager = self.FakeNetworkManager()
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nets = manager._validate_cidrs(None, '192.168.0.0/24', 1, 256)
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self.assertEqual(1, len(nets))
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cidrs = [str(net) for net in nets]
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self.assertTrue('192.168.0.0/24' in cidrs)
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def test__validate_cidrs_split_exact_in_half(self):
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manager = self.FakeNetworkManager()
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nets = manager._validate_cidrs(None, '192.168.0.0/24', 2, 128)
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self.assertEqual(2, len(nets))
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cidrs = [str(net) for net in nets]
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self.assertTrue('192.168.0.0/25' in cidrs)
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self.assertTrue('192.168.0.128/25' in cidrs)
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def test__validate_cidrs_split_cidr_in_use_middle_of_range(self):
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manager = self.FakeNetworkManager()
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self.mox.StubOutWithMock(manager.db, 'network_get_all')
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ctxt = mox.IgnoreArg()
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manager.db.network_get_all(ctxt).AndReturn([{'id': 1,
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'cidr': '192.168.2.0/24'}])
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self.mox.ReplayAll()
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nets = manager._validate_cidrs(None, '192.168.0.0/16', 4, 256)
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self.assertEqual(4, len(nets))
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cidrs = [str(net) for net in nets]
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exp_cidrs = ['192.168.0.0', '192.168.1.0', '192.168.3.0',
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'192.168.4.0']
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for exp_cidr in exp_cidrs:
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self.assertTrue(exp_cidr + '/24' in cidrs)
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self.assertFalse('192.168.2.0/24' in cidrs)
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def test__validate_cidrs_smaller_subnet_in_use(self):
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manager = self.FakeNetworkManager()
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self.mox.StubOutWithMock(manager.db, 'network_get_all')
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ctxt = mox.IgnoreArg()
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manager.db.network_get_all(ctxt).AndReturn([{'id': 1,
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'cidr': '192.168.2.9/25'}])
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self.mox.ReplayAll()
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# ValueError: requested cidr (192.168.2.0/24) conflicts with
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# existing smaller cidr
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args = [None, '192.168.2.0/24', 1, 256]
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self.assertRaises(ValueError, manager._validate_cidrs, *args)
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def test__validate_cidrs_split_smaller_cidr_in_use(self):
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manager = self.FakeNetworkManager()
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self.mox.StubOutWithMock(manager.db, 'network_get_all')
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ctxt = mox.IgnoreArg()
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manager.db.network_get_all(ctxt).AndReturn([{'id': 1,
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'cidr': '192.168.2.0/25'}])
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self.mox.ReplayAll()
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nets = manager._validate_cidrs(None, '192.168.0.0/16', 4, 256)
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self.assertEqual(4, len(nets))
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cidrs = [str(net) for net in nets]
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exp_cidrs = ['192.168.0.0', '192.168.1.0', '192.168.3.0',
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'192.168.4.0']
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for exp_cidr in exp_cidrs:
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self.assertTrue(exp_cidr + '/24' in cidrs)
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self.assertFalse('192.168.2.0/24' in cidrs)
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def test__validate_cidrs_split_smaller_cidr_in_use2(self):
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manager = self.FakeNetworkManager()
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self.mox.StubOutWithMock(manager.db, 'network_get_all')
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ctxt = mox.IgnoreArg()
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manager.db.network_get_all(ctxt).AndReturn([{'id': 1,
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'cidr': '192.168.2.9/29'}])
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self.mox.ReplayAll()
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nets = manager._validate_cidrs(None, '192.168.2.0/24', 3, 32)
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self.assertEqual(3, len(nets))
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cidrs = [str(net) for net in nets]
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print cidrs
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exp_cidrs = ['192.168.2.32', '192.168.2.64', '192.168.2.96']
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for exp_cidr in exp_cidrs:
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self.assertTrue(exp_cidr + '/27' in cidrs)
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self.assertFalse('192.168.2.0/27' in cidrs)
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def test__validate_cidrs_one_in_use(self):
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manager = self.FakeNetworkManager()
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args = [None, '192.168.0.0/24', 2, 256]
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# ValueError: network_size * num_networks exceeds cidr size
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self.assertRaises(ValueError, manager._validate_cidrs, *args)
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def test__validate_cidrs_already_used(self):
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manager = self.FakeNetworkManager()
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self.mox.StubOutWithMock(manager.db, 'network_get_all')
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ctxt = mox.IgnoreArg()
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manager.db.network_get_all(ctxt).AndReturn([{'id': 1,
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'cidr': '192.168.0.0/24'}])
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self.mox.ReplayAll()
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# ValueError: cidr already in use
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args = [None, '192.168.0.0/24', 1, 256]
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self.assertRaises(ValueError, manager._validate_cidrs, *args)
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def test__validate_cidrs_too_many(self):
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manager = self.FakeNetworkManager()
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args = [None, '192.168.0.0/24', 200, 256]
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# ValueError: Not enough subnets avail to satisfy requested
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# num_networks
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self.assertRaises(ValueError, manager._validate_cidrs, *args)
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def test__validate_cidrs_split_partial(self):
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manager = self.FakeNetworkManager()
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nets = manager._validate_cidrs(None, '192.168.0.0/16', 2, 256)
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returned_cidrs = [str(net) for net in nets]
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print returned_cidrs
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self.assertTrue('192.168.0.0/24' in returned_cidrs)
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self.assertTrue('192.168.1.0/24' in returned_cidrs)
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def test__validate_cidrs_conflict_existing_supernet(self):
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manager = self.FakeNetworkManager()
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self.mox.StubOutWithMock(manager.db, 'network_get_all')
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ctxt = mox.IgnoreArg()
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fakecidr = [{'id': 1, 'cidr': '192.168.0.0/8'}]
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manager.db.network_get_all(ctxt).AndReturn(fakecidr)
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self.mox.ReplayAll()
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args = [None, '192.168.0.0/24', 1, 256]
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# ValueError: requested cidr (192.168.0.0/24) conflicts
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# with existing supernet
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self.assertRaises(ValueError, manager._validate_cidrs, *args)
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def test_create_networks(self):
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cidr = '192.168.0.0/24'
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manager = self.FakeNetworkManager()
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self.stubs.Set(manager, '_create_fixed_ips',
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self.fake_create_fixed_ips)
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args = [None, 'foo', cidr, None, 1, 256, 'fd00::/48', None, None,
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None]
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result = manager.create_networks(*args)
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self.assertEqual(manager.create_networks(*args), None)
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def test_create_networks_cidr_already_used(self):
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manager = self.FakeNetworkManager()
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self.mox.StubOutWithMock(manager.db, 'network_get_all')
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ctxt = mox.IgnoreArg()
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fakecidr = [{'id': 1, 'cidr': '192.168.0.0/24'}]
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manager.db.network_get_all(ctxt).AndReturn(fakecidr)
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self.mox.ReplayAll()
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args = [None, 'foo', '192.168.0.0/24', None, 1, 256,
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'fd00::/48', None, None, None]
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self.assertRaises(ValueError, manager.create_networks, *args)
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def test_create_networks_many(self):
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cidr = '192.168.0.0/16'
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manager = self.FakeNetworkManager()
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self.stubs.Set(manager, '_create_fixed_ips',
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self.fake_create_fixed_ips)
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args = [None, 'foo', cidr, None, 10, 256, 'fd00::/48', None, None,
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None]
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self.assertEqual(manager.create_networks(*args), None)
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