0ddc93b1b1
This helps generating subnet masks by checking for subnet masks already used from the same test class. This also avoids having to check if a subnet with conflicting subnet CIDR already exists treating subnet error creation by looking in a local set of already reserved CIDRs. It fixes a problem that makes create_subnet try to reuse the same CIDRs more than once producing test failures. It also allows methods to blank list some CIDRs to avoid create_subnet from using it an therefore avoid interferences. Change-Id: I73e08a6832777d972990c3e68c582ef61568ad4e
148 lines
6.2 KiB
Python
148 lines
6.2 KiB
Python
# Copyright 2016 OpenStack Foundation
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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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import netaddr
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from tempest.common import utils
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from tempest.lib.common.utils import data_utils
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from tempest.lib.common.utils import test_utils
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from tempest.lib import decorators
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from tempest.lib import exceptions as lib_exc
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from neutron_tempest_plugin.api import base
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from neutron_lib import constants as lib_constants
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# 3 IP addresses are taken from every total for IPv4 these are reserved
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DEFAULT_IP4_RESERVED = 3
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# 2 IP addresses are taken from every total for IPv6 these are reserved
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# I assume the reason for having one less than IPv4 is it does not have
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# broadcast address
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DEFAULT_IP6_RESERVED = 2
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DELETE_TIMEOUT = 10
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DELETE_SLEEP = 2
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class NetworksIpAvailabilityTest(base.BaseAdminNetworkTest):
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"""
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Tests the following operations in the Neutron API using the REST client for
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Neutron:
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test total and used ips for net create
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test total and ips for net after subnet create
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test total and used ips for net after subnet and port create
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"""
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@classmethod
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@utils.requires_ext(extension="network-ip-availability", service="network")
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def skip_checks(cls):
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super(NetworksIpAvailabilityTest, cls).skip_checks()
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def _get_used_ips(self, network, net_availability):
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if network:
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for availability in net_availability['network_ip_availabilities']:
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if availability['network_id'] == network['id']:
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return availability['used_ips']
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def _cleanUp_port(self, port_id):
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# delete port, any way to avoid race
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try:
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self.client.delete_port(port_id)
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# if port is not found, this means it was deleted in the test
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except lib_exc.NotFound:
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pass
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def _assert_total_and_used_ips(self, expected_used, expected_total,
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network, net_availability):
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if network:
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for availability in net_availability['network_ip_availabilities']:
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if availability['network_id'] == network['id']:
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self.assertEqual(expected_total, availability['total_ips'])
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self.assertEqual(expected_used, availability['used_ips'])
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def calc_total_ips(prefix, ip_version):
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# will calculate total ips after removing reserved.
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if ip_version == lib_constants.IP_VERSION_4:
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total_ips = 2 ** (lib_constants.IPv4_BITS
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- prefix) - DEFAULT_IP4_RESERVED
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elif ip_version == lib_constants.IP_VERSION_6:
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total_ips = 2 ** (lib_constants.IPv6_BITS
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- prefix) - DEFAULT_IP6_RESERVED
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return total_ips
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class NetworksIpAvailabilityIPv4Test(NetworksIpAvailabilityTest):
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@decorators.idempotent_id('0f33cc8c-1bf6-47d1-9ce1-010618240599')
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def test_admin_network_availability_before_subnet(self):
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net_name = data_utils.rand_name('network')
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network = self.create_network(network_name=net_name)
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self.addCleanup(self.client.delete_network, network['id'])
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net_availability = self.admin_client.list_network_ip_availabilities()
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self._assert_total_and_used_ips(0, 0, network, net_availability)
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@decorators.idempotent_id('3aecd3b2-16ed-4b87-a54a-91d7b3c2986b')
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def test_net_ip_availability_after_subnet_and_ports(self):
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net_name = data_utils.rand_name('network')
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network = self.create_network(network_name=net_name)
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self.addCleanup(self.client.delete_network, network['id'])
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subnet = self.create_subnet(network, enable_dhcp=False)
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prefix = netaddr.IPNetwork(subnet['cidr']).prefixlen
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self.addCleanup(self.client.delete_subnet, subnet['id'])
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body = self.admin_client.list_network_ip_availabilities()
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used_ip = self._get_used_ips(network, body)
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port1 = self.client.create_port(network_id=network['id'])
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self.addCleanup(self.client.delete_port, port1['port']['id'])
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port2 = self.client.create_port(network_id=network['id'])
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self.addCleanup(self.client.delete_port, port2['port']['id'])
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net_availability = self.admin_client.list_network_ip_availabilities()
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self._assert_total_and_used_ips(
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used_ip + 2,
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calc_total_ips(prefix, self._ip_version),
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network, net_availability)
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@decorators.idempotent_id('9f11254d-757b-492e-b14b-f52144e4ee7b')
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def test_net_ip_availability_after_port_delete(self):
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net_name = data_utils.rand_name('network')
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network = self.create_network(network_name=net_name)
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self.addCleanup(self.client.delete_network, network['id'])
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subnet = self.create_subnet(network, enable_dhcp=False)
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self.addCleanup(self.client.delete_subnet, subnet['id'])
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port = self.client.create_port(network_id=network['id'])
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self.addCleanup(self._cleanUp_port, port['port']['id'])
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net_availability = self.admin_client.list_network_ip_availabilities()
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used_ip = self._get_used_ips(network, net_availability)
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self.client.delete_port(port['port']['id'])
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def get_net_availability():
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availabilities = self.admin_client.list_network_ip_availabilities()
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used_ip_after_port_delete = self._get_used_ips(network,
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availabilities)
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return used_ip - 1 == used_ip_after_port_delete
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self.assertTrue(
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test_utils.call_until_true(
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get_net_availability, DELETE_TIMEOUT, DELETE_SLEEP),
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msg="IP address did not become available after port delete")
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class NetworksIpAvailabilityIPv6Test(NetworksIpAvailabilityIPv4Test):
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_ip_version = lib_constants.IP_VERSION_6
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