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# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import abc
import six
import stevedore
from tempest_lib.common.utils import misc
@six.add_metaclass(abc.ABCMeta)
class TempestPlugin(object):
"""A TempestPlugin class provides the basic hooks for an external
plugin to provide tempest the necessary information to run the plugin.
"""
@abc.abstractmethod
def load_tests(self):
"""Method to return the information necessary to load the tests in the
plugin.
:return: a tuple with the first value being the test_dir and the second
being the top_level
:rtype: tuple
"""
return
@misc.singleton
class TempestTestPluginManager(object):
"""Tempest test plugin manager class
This class is used to manage the lifecycle of external tempest test
plugins. It provides functions for getting set
"""
def __init__(self):
self.ext_plugins = stevedore.ExtensionManager(
'tempest.test.plugins', invoke_on_load=True,
propagate_map_exceptions=True)
def get_plugin_load_tests_tuple(self):
load_tests_dict = {}
for plug in self.ext_plugins:
load_tests_dict[plug.name] = plug.obj.load_tests()
return load_tests_dict
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