66 lines
2.4 KiB
Python
66 lines
2.4 KiB
Python
# Copyright 2014 Cisco Systems, Inc.
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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 random
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from neutron.agent.linux import ovs_lib
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from neutron.agent.linux import utils
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from neutron.common import constants as n_const
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from neutron.tests.functional import base as functional_base
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BR_PREFIX = 'test-br'
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class BaseLinuxTestCase(functional_base.BaseSudoTestCase):
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def check_command(self, cmd, error_text, skip_msg, root_helper=None):
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try:
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utils.execute(cmd, root_helper=root_helper)
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except RuntimeError as e:
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if error_text in str(e) and not self.fail_on_missing_deps:
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self.skipTest(skip_msg)
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raise
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def get_rand_name(self, max_length, prefix='test'):
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name = prefix + str(random.randint(1, 0x7fffffff))
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return name[:max_length]
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def create_resource(self, name_prefix, creation_func, *args, **kwargs):
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"""Create a new resource that does not already exist.
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:param name_prefix: The prefix for a randomly generated name
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:param creation_func: A function taking the name of the resource
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to be created as it's first argument. An error is assumed
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to indicate a name collision.
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:param *args *kwargs: These will be passed to the create function.
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"""
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while True:
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name = self.get_rand_name(n_const.DEVICE_NAME_MAX_LEN, name_prefix)
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try:
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return creation_func(name, *args, **kwargs)
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except RuntimeError:
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continue
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class BaseOVSLinuxTestCase(BaseLinuxTestCase):
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def setUp(self):
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super(BaseOVSLinuxTestCase, self).setUp()
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self.ovs = ovs_lib.BaseOVS(self.root_helper)
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def create_ovs_bridge(self, br_prefix=BR_PREFIX):
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br = self.create_resource(br_prefix, self.ovs.add_bridge)
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self.addCleanup(br.destroy)
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return br
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