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# -*- coding: utf-8 -*-
# Copyright (C) 2014 Yahoo! Inc. All Rights Reserved.
#
# 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 io
from oslo_utils import reflection
from taskflow.engines.worker_based import endpoint
from taskflow.engines.worker_based import worker
from taskflow import test
from taskflow.test import mock
from taskflow.tests import utils
class TestWorker(test.MockTestCase):
def setUp(self):
super(TestWorker, self).setUp()
self.task_cls = utils.DummyTask
self.task_name = reflection.get_class_name(self.task_cls)
self.broker_url = 'test-url'
self.exchange = 'test-exchange'
self.topic = 'test-topic'
# patch classes
self.executor_mock, self.executor_inst_mock = self.patchClass(
worker.futurist, 'ThreadPoolExecutor', attach_as='executor')
self.server_mock, self.server_inst_mock = self.patchClass(
worker.server, 'Server')
def worker(self, reset_master_mock=False, **kwargs):
worker_kwargs = dict(exchange=self.exchange,
topic=self.topic,
tasks=[],
url=self.broker_url)
worker_kwargs.update(kwargs)
w = worker.Worker(**worker_kwargs)
if reset_master_mock:
self.resetMasterMock()
return w
def test_creation(self):
self.worker()
master_mock_calls = [
mock.call.executor_class(max_workers=None),
mock.call.Server(self.topic, self.exchange,
self.executor_inst_mock, [],
url=self.broker_url,
transport_options=mock.ANY,
transport=mock.ANY,
retry_options=mock.ANY)
]
self.assertEqual(master_mock_calls, self.master_mock.mock_calls)
def test_banner_writing(self):
buf = io.StringIO()
w = self.worker()
w.run(banner_writer=buf.write)
w.wait()
w.stop()
self.assertGreater(0, len(buf.getvalue()))
def test_creation_with_custom_threads_count(self):
self.worker(threads_count=10)
master_mock_calls = [
mock.call.executor_class(max_workers=10),
mock.call.Server(self.topic, self.exchange,
self.executor_inst_mock, [],
url=self.broker_url,
transport_options=mock.ANY,
transport=mock.ANY,
retry_options=mock.ANY)
]
self.assertEqual(master_mock_calls, self.master_mock.mock_calls)
def test_creation_with_custom_executor(self):
executor_mock = mock.MagicMock(name='executor')
self.worker(executor=executor_mock)
master_mock_calls = [
mock.call.Server(self.topic, self.exchange, executor_mock, [],
url=self.broker_url,
transport_options=mock.ANY,
transport=mock.ANY,
retry_options=mock.ANY)
]
self.assertEqual(master_mock_calls, self.master_mock.mock_calls)
def test_run_with_no_tasks(self):
self.worker(reset_master_mock=True).run()
master_mock_calls = [
mock.call.server.start()
]
self.assertEqual(master_mock_calls, self.master_mock.mock_calls)
def test_run_with_tasks(self):
self.worker(reset_master_mock=True,
tasks=['taskflow.tests.utils:DummyTask']).run()
master_mock_calls = [
mock.call.server.start()
]
self.assertEqual(master_mock_calls, self.master_mock.mock_calls)
def test_run_with_custom_executor(self):
executor_mock = mock.MagicMock(name='executor')
self.worker(reset_master_mock=True,
executor=executor_mock).run()
master_mock_calls = [
mock.call.server.start()
]
self.assertEqual(master_mock_calls, self.master_mock.mock_calls)
def test_wait(self):
w = self.worker(reset_master_mock=True)
w.run()
w.wait()
master_mock_calls = [
mock.call.server.start(),
mock.call.server.wait()
]
self.assertEqual(master_mock_calls, self.master_mock.mock_calls)
def test_stop(self):
self.worker(reset_master_mock=True).stop()
master_mock_calls = [
mock.call.server.stop(),
mock.call.executor.shutdown()
]
self.assertEqual(master_mock_calls, self.master_mock.mock_calls)
def test_derive_endpoints_from_string_tasks(self):
endpoints = worker.Worker._derive_endpoints(
['taskflow.tests.utils:DummyTask'])
self.assertEqual(1, len(endpoints))
self.assertIsInstance(endpoints[0], endpoint.Endpoint)
self.assertEqual(self.task_name, endpoints[0].name)
def test_derive_endpoints_from_string_modules(self):
endpoints = worker.Worker._derive_endpoints(['taskflow.tests.utils'])
assert any(e.name == self.task_name for e in endpoints)
def test_derive_endpoints_from_string_non_existent_module(self):
tasks = ['non.existent.module']
self.assertRaises(ImportError, worker.Worker._derive_endpoints, tasks)
def test_derive_endpoints_from_string_non_existent_task(self):
tasks = ['non.existent.module:Task']
self.assertRaises(ImportError, worker.Worker._derive_endpoints, tasks)
def test_derive_endpoints_from_string_non_task_class(self):
tasks = ['taskflow.tests.utils:FakeTask']
self.assertRaises(TypeError, worker.Worker._derive_endpoints, tasks)
def test_derive_endpoints_from_tasks(self):
endpoints = worker.Worker._derive_endpoints([self.task_cls])
self.assertEqual(1, len(endpoints))
self.assertIsInstance(endpoints[0], endpoint.Endpoint)
self.assertEqual(self.task_name, endpoints[0].name)
def test_derive_endpoints_from_non_task_class(self):
self.assertRaises(TypeError, worker.Worker._derive_endpoints,
[utils.FakeTask])
def test_derive_endpoints_from_modules(self):
endpoints = worker.Worker._derive_endpoints([utils])
assert any(e.name == self.task_name for e in endpoints)
def test_derive_endpoints_unexpected_task_type(self):
self.assertRaises(TypeError, worker.Worker._derive_endpoints, [111])
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