228 lines
6.9 KiB
Python
228 lines
6.9 KiB
Python
# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import concurrent.futures
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import fixtures
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import mock
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import threading
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import time
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from six.moves import queue
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from openstack import task_manager
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from openstack.tests.unit import base
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class TestException(Exception):
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pass
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class TaskTest(task_manager.Task):
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def main(self):
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raise TestException("This is a test exception")
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class TaskTestGenerator(task_manager.Task):
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def main(self):
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yield 1
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class TaskTestInt(task_manager.Task):
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def main(self):
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return int(1)
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class TaskTestFloat(task_manager.Task):
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def main(self):
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return float(2.0)
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class TaskTestStr(task_manager.Task):
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def main(self):
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return "test"
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class TaskTestBool(task_manager.Task):
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def main(self):
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return True
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class TaskTestSet(task_manager.Task):
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def main(self):
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return set([1, 2])
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class TestRateTransforms(base.TestCase):
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def test_rate_parameter_scalar(self):
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manager = task_manager.TaskManager(name='test', rate=0.1234)
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self.assertEqual(1 / 0.1234, manager._get_wait('compute'))
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self.assertEqual(1 / 0.1234, manager._get_wait(None))
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def test_rate_parameter_dict(self):
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manager = task_manager.TaskManager(
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name='test',
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rate={
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'compute': 20,
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'network': 10,
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})
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self.assertEqual(1.0 / 20, manager._get_wait('compute'))
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self.assertEqual(1.0 / 10, manager._get_wait('network'))
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self.assertIsNone(manager._get_wait('object-store'))
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class TestTaskManager(base.TestCase):
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def setUp(self):
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super(TestTaskManager, self).setUp()
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self.manager = task_manager.TaskManager(name='test')
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self.manager.start()
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def test_wait_re_raise(self):
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"""Test that Exceptions thrown in a Task is reraised correctly
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This test is aimed to six.reraise(), called in Task::wait().
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Specifically, we test if we get the same behaviour with all the
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configured interpreters (e.g. py27, p35, ...)
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"""
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self.assertRaises(TestException, self.manager.submit_task, TaskTest())
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def test_dont_munchify_int(self):
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ret = self.manager.submit_task(TaskTestInt())
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self.assertIsInstance(ret, int)
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def test_dont_munchify_float(self):
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ret = self.manager.submit_task(TaskTestFloat())
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self.assertIsInstance(ret, float)
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def test_dont_munchify_str(self):
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ret = self.manager.submit_task(TaskTestStr())
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self.assertIsInstance(ret, str)
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def test_dont_munchify_bool(self):
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ret = self.manager.submit_task(TaskTestBool())
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self.assertIsInstance(ret, bool)
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def test_dont_munchify_set(self):
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ret = self.manager.submit_task(TaskTestSet())
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self.assertIsInstance(ret, set)
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@mock.patch.object(concurrent.futures.ThreadPoolExecutor, 'submit')
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def test_async(self, mock_submit):
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self.manager.submit_function(set, run_async=True)
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self.assertTrue(mock_submit.called)
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@mock.patch.object(task_manager.TaskManager, 'post_run_task')
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@mock.patch.object(task_manager.TaskManager, 'pre_run_task')
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def test_pre_post_calls(self, mock_pre, mock_post):
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self.manager.submit_function(lambda: None)
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mock_pre.assert_called_once()
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mock_post.assert_called_once()
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@mock.patch.object(task_manager.TaskManager, 'post_run_task')
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@mock.patch.object(task_manager.TaskManager, 'pre_run_task')
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def test_validate_timing(self, mock_pre, mock_post):
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# Note the unit test setup has mocked out time.sleep() and
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# done a * 0.0001, and the test should be under the 5
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# second timeout. Thus with below, we should see at
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# *least* a 1 second pause running the task.
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self.manager.submit_function(lambda: time.sleep(10000))
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mock_pre.assert_called_once()
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mock_post.assert_called_once()
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args, kwargs = mock_post.call_args_list[0]
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self.assertTrue(args[0] > 1.0)
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class ThreadingTaskManager(task_manager.TaskManager):
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"""A subclass of TaskManager which exercises the thread-shifting
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exception handling behavior."""
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def __init__(self, *args, **kw):
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super(ThreadingTaskManager, self).__init__(
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*args, **kw)
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self.queue = queue.Queue()
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self._running = True
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self._thread = threading.Thread(name=self.name, target=self.run)
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self._thread.daemon = True
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self.failed = False
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def start(self):
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self._thread.start()
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def stop(self):
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self._running = False
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self.queue.put(None)
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def join(self):
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self._thread.join()
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def run(self):
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# No exception should ever cause this method to hit its
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# exception handler.
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try:
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while True:
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task = self.queue.get()
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if not task:
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if not self._running:
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break
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continue
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self.run_task(task)
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self.queue.task_done()
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except Exception:
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self.failed = True
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raise
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def submit_task(self, task, raw=False):
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# An important part of the exception-shifting feature is that
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# this method should raise the exception.
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self.queue.put(task)
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return task.wait()
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class ThreadingTaskManagerFixture(fixtures.Fixture):
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def _setUp(self):
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self.manager = ThreadingTaskManager(name='threading test')
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self.manager.start()
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self.addCleanup(self._cleanup)
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def _cleanup(self):
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self.manager.stop()
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self.manager.join()
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class TestThreadingTaskManager(base.TestCase):
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def setUp(self):
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super(TestThreadingTaskManager, self).setUp()
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f = self.useFixture(ThreadingTaskManagerFixture())
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self.manager = f.manager
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def test_wait_re_raise(self):
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"""Test that Exceptions thrown in a Task is reraised correctly
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This test is aimed to six.reraise(), called in Task::wait().
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Specifically, we test if we get the same behaviour with all the
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configured interpreters (e.g. py27, p35, ...)
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"""
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self.assertRaises(TestException, self.manager.submit_task, TaskTest())
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# Stop the manager and join the run thread to ensure the
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# exception handler has run.
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self.manager.stop()
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self.manager.join()
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self.assertFalse(self.manager.failed)
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