359cc490bd
To make it easily possible to change the retry atom execution from being in the engine thread this creates a retry executor (which is similar to the task executor) and provide that a serial executor (which it will use to execute with). This makes the retry and task actions closer to being the same and makes the surrounding code that much similar (which makes understanding it easier). Change-Id: I993e938280df3bd97f8076293183ef21989e2dba
362 lines
14 KiB
Python
362 lines
14 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 threading
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import time
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from oslo_utils import fixture
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from oslo_utils import timeutils
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from taskflow.engines.worker_based import executor
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from taskflow.engines.worker_based import protocol as pr
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from taskflow import task as task_atom
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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 as test_utils
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from taskflow.types import failure
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class TestWorkerTaskExecutor(test.MockTestCase):
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def setUp(self):
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super(TestWorkerTaskExecutor, self).setUp()
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self.task = test_utils.DummyTask()
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self.task_uuid = 'task-uuid'
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self.task_args = {'a': 'a'}
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self.task_result = 'task-result'
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self.task_failures = {}
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self.timeout = 60
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self.broker_url = 'broker-url'
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self.executor_uuid = 'executor-uuid'
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self.executor_exchange = 'executor-exchange'
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self.executor_topic = 'test-topic1'
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self.proxy_started_event = threading.Event()
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# patch classes
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self.proxy_mock, self.proxy_inst_mock = self.patchClass(
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executor.proxy, 'Proxy')
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self.request_mock, self.request_inst_mock = self.patchClass(
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executor.pr, 'Request', autospec=False)
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# other mocking
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self.proxy_inst_mock.start.side_effect = self._fake_proxy_start
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self.proxy_inst_mock.stop.side_effect = self._fake_proxy_stop
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self.request_inst_mock.uuid = self.task_uuid
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self.request_inst_mock.expired = False
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self.request_inst_mock.task_cls = self.task.name
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self.message_mock = mock.MagicMock(name='message')
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self.message_mock.properties = {'correlation_id': self.task_uuid,
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'type': pr.RESPONSE}
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def _fake_proxy_start(self):
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self.proxy_started_event.set()
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while self.proxy_started_event.is_set():
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time.sleep(0.01)
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def _fake_proxy_stop(self):
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self.proxy_started_event.clear()
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def executor(self, reset_master_mock=True, **kwargs):
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executor_kwargs = dict(uuid=self.executor_uuid,
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exchange=self.executor_exchange,
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topics=[self.executor_topic],
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url=self.broker_url)
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executor_kwargs.update(kwargs)
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ex = executor.WorkerTaskExecutor(**executor_kwargs)
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if reset_master_mock:
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self.resetMasterMock()
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return ex
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def test_creation(self):
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ex = self.executor(reset_master_mock=False)
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master_mock_calls = [
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mock.call.Proxy(self.executor_uuid, self.executor_exchange,
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on_wait=ex._on_wait,
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url=self.broker_url, transport=mock.ANY,
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transport_options=mock.ANY,
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retry_options=mock.ANY,
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type_handlers=mock.ANY),
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mock.call.proxy.dispatcher.type_handlers.update(mock.ANY),
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]
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self.assertEqual(self.master_mock.mock_calls, master_mock_calls)
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def test_on_message_response_state_running(self):
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response = pr.Response(pr.RUNNING)
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ex = self.executor()
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ex._requests_cache[self.task_uuid] = self.request_inst_mock
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ex._process_response(response.to_dict(), self.message_mock)
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expected_calls = [
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mock.call.transition_and_log_error(pr.RUNNING, logger=mock.ANY),
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]
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self.assertEqual(expected_calls, self.request_inst_mock.mock_calls)
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def test_on_message_response_state_progress(self):
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response = pr.Response(pr.EVENT,
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event_type=task_atom.EVENT_UPDATE_PROGRESS,
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details={'progress': 1.0})
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ex = self.executor()
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ex._requests_cache[self.task_uuid] = self.request_inst_mock
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ex._process_response(response.to_dict(), self.message_mock)
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expected_calls = [
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mock.call.notifier.notify(task_atom.EVENT_UPDATE_PROGRESS,
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{'progress': 1.0}),
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]
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self.assertEqual(expected_calls, self.request_inst_mock.mock_calls)
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def test_on_message_response_state_failure(self):
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a_failure = failure.Failure.from_exception(Exception('test'))
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failure_dict = a_failure.to_dict()
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response = pr.Response(pr.FAILURE, result=failure_dict)
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ex = self.executor()
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ex._requests_cache[self.task_uuid] = self.request_inst_mock
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ex._process_response(response.to_dict(), self.message_mock)
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self.assertEqual(len(ex._requests_cache), 0)
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expected_calls = [
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mock.call.transition_and_log_error(pr.FAILURE, logger=mock.ANY),
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mock.call.set_result(result=test_utils.FailureMatcher(a_failure))
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]
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self.assertEqual(expected_calls, self.request_inst_mock.mock_calls)
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def test_on_message_response_state_success(self):
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response = pr.Response(pr.SUCCESS, result=self.task_result,
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event='executed')
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ex = self.executor()
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ex._requests_cache[self.task_uuid] = self.request_inst_mock
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ex._process_response(response.to_dict(), self.message_mock)
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expected_calls = [
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mock.call.transition_and_log_error(pr.SUCCESS, logger=mock.ANY),
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mock.call.set_result(result=self.task_result, event='executed')
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]
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self.assertEqual(expected_calls, self.request_inst_mock.mock_calls)
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def test_on_message_response_unknown_state(self):
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response = pr.Response(state='<unknown>')
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ex = self.executor()
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ex._requests_cache[self.task_uuid] = self.request_inst_mock
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ex._process_response(response.to_dict(), self.message_mock)
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self.assertEqual(self.request_inst_mock.mock_calls, [])
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def test_on_message_response_unknown_task(self):
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self.message_mock.properties['correlation_id'] = '<unknown>'
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response = pr.Response(pr.RUNNING)
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ex = self.executor()
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ex._requests_cache[self.task_uuid] = self.request_inst_mock
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ex._process_response(response.to_dict(), self.message_mock)
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self.assertEqual(self.request_inst_mock.mock_calls, [])
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def test_on_message_response_no_correlation_id(self):
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self.message_mock.properties = {'type': pr.RESPONSE}
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response = pr.Response(pr.RUNNING)
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ex = self.executor()
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ex._requests_cache[self.task_uuid] = self.request_inst_mock
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ex._process_response(response.to_dict(), self.message_mock)
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self.assertEqual(self.request_inst_mock.mock_calls, [])
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def test_on_wait_task_not_expired(self):
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ex = self.executor()
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ex._requests_cache[self.task_uuid] = self.request_inst_mock
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self.assertEqual(len(ex._requests_cache), 1)
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ex._on_wait()
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self.assertEqual(len(ex._requests_cache), 1)
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def test_on_wait_task_expired(self):
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now = timeutils.utcnow()
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f = self.useFixture(fixture.TimeFixture(override_time=now))
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self.request_inst_mock.expired = True
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self.request_inst_mock.created_on = now
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f.advance_time_seconds(120)
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ex = self.executor()
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ex._requests_cache[self.task_uuid] = self.request_inst_mock
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self.assertEqual(len(ex._requests_cache), 1)
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ex._on_wait()
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self.assertEqual(len(ex._requests_cache), 0)
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def test_remove_task_non_existent(self):
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ex = self.executor()
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ex._requests_cache[self.task_uuid] = self.request_inst_mock
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self.assertEqual(len(ex._requests_cache), 1)
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del ex._requests_cache[self.task_uuid]
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self.assertEqual(len(ex._requests_cache), 0)
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# delete non-existent
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try:
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del ex._requests_cache[self.task_uuid]
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except KeyError:
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pass
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self.assertEqual(len(ex._requests_cache), 0)
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def test_execute_task(self):
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ex = self.executor()
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ex._finder._add(self.executor_topic, [self.task.name])
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ex.execute_task(self.task, self.task_uuid, self.task_args)
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expected_calls = [
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mock.call.Request(self.task, self.task_uuid, 'execute',
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self.task_args, self.timeout),
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mock.call.request.transition_and_log_error(pr.PENDING,
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logger=mock.ANY),
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mock.call.proxy.publish(self.request_inst_mock,
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self.executor_topic,
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reply_to=self.executor_uuid,
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correlation_id=self.task_uuid)
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]
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self.assertEqual(expected_calls, self.master_mock.mock_calls)
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def test_revert_task(self):
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ex = self.executor()
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ex._finder._add(self.executor_topic, [self.task.name])
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ex.revert_task(self.task, self.task_uuid, self.task_args,
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self.task_result, self.task_failures)
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expected_calls = [
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mock.call.Request(self.task, self.task_uuid, 'revert',
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self.task_args, self.timeout,
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failures=self.task_failures,
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result=self.task_result),
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mock.call.request.transition_and_log_error(pr.PENDING,
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logger=mock.ANY),
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mock.call.proxy.publish(self.request_inst_mock,
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self.executor_topic,
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reply_to=self.executor_uuid,
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correlation_id=self.task_uuid)
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]
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self.assertEqual(expected_calls, self.master_mock.mock_calls)
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def test_execute_task_topic_not_found(self):
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ex = self.executor()
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ex.execute_task(self.task, self.task_uuid, self.task_args)
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expected_calls = [
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mock.call.Request(self.task, self.task_uuid, 'execute',
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self.task_args, self.timeout),
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]
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self.assertEqual(self.master_mock.mock_calls, expected_calls)
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def test_execute_task_publish_error(self):
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self.proxy_inst_mock.publish.side_effect = Exception('Woot!')
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ex = self.executor()
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ex._finder._add(self.executor_topic, [self.task.name])
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ex.execute_task(self.task, self.task_uuid, self.task_args)
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expected_calls = [
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mock.call.Request(self.task, self.task_uuid, 'execute',
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self.task_args, self.timeout),
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mock.call.request.transition_and_log_error(pr.PENDING,
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logger=mock.ANY),
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mock.call.proxy.publish(self.request_inst_mock,
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self.executor_topic,
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reply_to=self.executor_uuid,
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correlation_id=self.task_uuid),
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mock.call.request.transition_and_log_error(pr.FAILURE,
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logger=mock.ANY),
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mock.call.request.set_result(mock.ANY)
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]
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self.assertEqual(expected_calls, self.master_mock.mock_calls)
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def test_start_stop(self):
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ex = self.executor()
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ex.start()
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# make sure proxy thread started
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self.assertTrue(self.proxy_started_event.wait(test_utils.WAIT_TIMEOUT))
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# stop executor
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ex.stop()
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self.master_mock.assert_has_calls([
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mock.call.proxy.start(),
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mock.call.proxy.wait(),
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mock.call.proxy.stop()
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], any_order=True)
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def test_start_already_running(self):
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ex = self.executor()
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ex.start()
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# make sure proxy thread started
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self.assertTrue(self.proxy_started_event.wait(test_utils.WAIT_TIMEOUT))
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# start executor again
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ex.start()
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# stop executor
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ex.stop()
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self.master_mock.assert_has_calls([
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mock.call.proxy.start(),
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mock.call.proxy.wait(),
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mock.call.proxy.stop()
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], any_order=True)
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def test_stop_not_running(self):
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self.executor().stop()
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self.assertEqual(self.master_mock.mock_calls, [])
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def test_stop_not_alive(self):
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self.proxy_inst_mock.start.side_effect = None
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# start executor
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ex = self.executor()
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ex.start()
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# stop executor
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ex.stop()
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# since proxy thread is already done - stop is not called
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self.master_mock.assert_has_calls([
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mock.call.proxy.start(),
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mock.call.proxy.wait()
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], any_order=True)
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def test_restart(self):
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ex = self.executor()
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ex.start()
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# make sure thread started
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self.assertTrue(self.proxy_started_event.wait(test_utils.WAIT_TIMEOUT))
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# restart executor
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ex.stop()
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ex.start()
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# make sure thread started
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self.assertTrue(self.proxy_started_event.wait(test_utils.WAIT_TIMEOUT))
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# stop executor
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ex.stop()
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self.master_mock.assert_has_calls([
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mock.call.proxy.start(),
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mock.call.proxy.wait(),
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mock.call.proxy.stop(),
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mock.call.proxy.start(),
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mock.call.proxy.wait(),
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mock.call.proxy.stop()
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], any_order=True)
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