94b4b60967
Instead of always writing the worker startup banner to LOG.info make it so that a callback can be provided that will receive the worker banner and can write it to a desired location that the callback specifies (or drop it completely). This is useful for those who use workers but have an alternate location they desire the banner to go (for example some arbitrary stream). Change-Id: I61a4b7e9dd33ee06137caaed33153f5b3fbeb661
195 lines
6.8 KiB
Python
195 lines
6.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2014 Yahoo! Inc. 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 six
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from taskflow.engines.worker_based import endpoint
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from taskflow.engines.worker_based import worker
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from taskflow import test
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from taskflow.test import mock
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from taskflow.tests import utils
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from taskflow.utils import reflection
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class TestWorker(test.MockTestCase):
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def setUp(self):
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super(TestWorker, self).setUp()
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self.task_cls = utils.DummyTask
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self.task_name = reflection.get_class_name(self.task_cls)
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self.broker_url = 'test-url'
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self.exchange = 'test-exchange'
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self.topic = 'test-topic'
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self.threads_count = 5
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self.endpoint_count = 21
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# patch classes
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self.executor_mock, self.executor_inst_mock = self.patchClass(
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worker.futures, 'ThreadPoolExecutor', attach_as='executor')
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self.server_mock, self.server_inst_mock = self.patchClass(
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worker.server, 'Server')
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# other mocking
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self.threads_count_mock = self.patch(
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'taskflow.engines.worker_based.worker.tu.get_optimal_thread_count')
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self.threads_count_mock.return_value = self.threads_count
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def worker(self, reset_master_mock=False, **kwargs):
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worker_kwargs = dict(exchange=self.exchange,
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topic=self.topic,
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tasks=[],
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url=self.broker_url)
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worker_kwargs.update(kwargs)
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w = worker.Worker(**worker_kwargs)
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if reset_master_mock:
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self.resetMasterMock()
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return w
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def test_creation(self):
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self.worker()
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master_mock_calls = [
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mock.call.executor_class(self.threads_count),
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mock.call.Server(self.topic, self.exchange,
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self.executor_inst_mock, [], url=self.broker_url)
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]
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self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
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def test_banner_writing(self):
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buf = six.StringIO()
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w = self.worker()
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w.run(banner_writer=buf.write)
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w.wait()
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w.stop()
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self.assertGreater(0, len(buf.getvalue()))
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def test_creation_with_custom_threads_count(self):
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self.worker(threads_count=10)
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master_mock_calls = [
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mock.call.executor_class(10),
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mock.call.Server(self.topic, self.exchange,
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self.executor_inst_mock, [], url=self.broker_url)
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]
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self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
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def test_creation_with_negative_threads_count(self):
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self.assertRaises(ValueError, self.worker, threads_count=-10)
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def test_creation_with_custom_executor(self):
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executor_mock = mock.MagicMock(name='executor')
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self.worker(executor=executor_mock)
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master_mock_calls = [
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mock.call.Server(self.topic, self.exchange, executor_mock, [],
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url=self.broker_url)
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]
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self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
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def test_run_with_no_tasks(self):
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self.worker(reset_master_mock=True).run()
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master_mock_calls = [
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mock.call.server.start()
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]
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self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
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def test_run_with_tasks(self):
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self.worker(reset_master_mock=True,
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tasks=['taskflow.tests.utils:DummyTask']).run()
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master_mock_calls = [
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mock.call.server.start()
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]
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self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
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def test_run_with_custom_executor(self):
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executor_mock = mock.MagicMock(name='executor')
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self.worker(reset_master_mock=True,
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executor=executor_mock).run()
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master_mock_calls = [
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mock.call.server.start()
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]
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self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
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def test_wait(self):
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w = self.worker(reset_master_mock=True)
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w.run()
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w.wait()
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master_mock_calls = [
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mock.call.server.start(),
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mock.call.server.wait()
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]
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self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
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def test_stop(self):
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self.worker(reset_master_mock=True).stop()
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master_mock_calls = [
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mock.call.server.stop(),
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mock.call.executor.shutdown()
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]
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self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
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def test_derive_endpoints_from_string_tasks(self):
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endpoints = worker.Worker._derive_endpoints(
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['taskflow.tests.utils:DummyTask'])
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self.assertEqual(len(endpoints), 1)
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self.assertIsInstance(endpoints[0], endpoint.Endpoint)
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self.assertEqual(endpoints[0].name, self.task_name)
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def test_derive_endpoints_from_string_modules(self):
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endpoints = worker.Worker._derive_endpoints(['taskflow.tests.utils'])
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self.assertEqual(len(endpoints), self.endpoint_count)
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def test_derive_endpoints_from_string_non_existent_module(self):
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tasks = ['non.existent.module']
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self.assertRaises(ImportError, worker.Worker._derive_endpoints, tasks)
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def test_derive_endpoints_from_string_non_existent_task(self):
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tasks = ['non.existent.module:Task']
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self.assertRaises(ImportError, worker.Worker._derive_endpoints, tasks)
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def test_derive_endpoints_from_string_non_task_class(self):
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tasks = ['taskflow.tests.utils:FakeTask']
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self.assertRaises(TypeError, worker.Worker._derive_endpoints, tasks)
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def test_derive_endpoints_from_tasks(self):
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endpoints = worker.Worker._derive_endpoints([self.task_cls])
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self.assertEqual(len(endpoints), 1)
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self.assertIsInstance(endpoints[0], endpoint.Endpoint)
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self.assertEqual(endpoints[0].name, self.task_name)
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def test_derive_endpoints_from_non_task_class(self):
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self.assertRaises(TypeError, worker.Worker._derive_endpoints,
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[utils.FakeTask])
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def test_derive_endpoints_from_modules(self):
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endpoints = worker.Worker._derive_endpoints([utils])
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self.assertEqual(len(endpoints), self.endpoint_count)
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def test_derive_endpoints_unexpected_task_type(self):
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self.assertRaises(TypeError, worker.Worker._derive_endpoints, [111])
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