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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.
from taskflow.engines.worker_based import engine
from taskflow.engines.worker_based import executor
from taskflow.patterns import linear_flow as lf
from taskflow.persistence import backends
from taskflow import test
from taskflow.test import mock
from taskflow.tests import utils
from taskflow.utils import persistence_utils as pu
class TestWorkerBasedActionEngine(test.MockTestCase):
@staticmethod
def _create_engine(**kwargs):
flow = lf.Flow('test-flow').add(utils.DummyTask())
backend = backends.fetch({'connection': 'memory'})
flow_detail = pu.create_flow_detail(flow, backend=backend)
options = kwargs.copy()
return engine.WorkerBasedActionEngine(flow, flow_detail,
backend, options)
def _patch_in_executor(self):
executor_mock, executor_inst_mock = self.patchClass(
engine.executor, 'WorkerTaskExecutor', attach_as='executor')
return executor_mock, executor_inst_mock
def test_creation_default(self):
executor_mock, executor_inst_mock = self._patch_in_executor()
eng = self._create_engine()
expected_calls = [
mock.call.executor_class(uuid=eng.storage.flow_uuid,
url=None,
exchange='default',
topics=[],
transport=None,
transport_options=None,
transition_timeout=mock.ANY,
retry_options=None)
]
self.assertEqual(expected_calls, self.master_mock.mock_calls)
def test_creation_custom(self):
executor_mock, executor_inst_mock = self._patch_in_executor()
topics = ['test-topic1', 'test-topic2']
exchange = 'test-exchange'
broker_url = 'test-url'
eng = self._create_engine(
url=broker_url,
exchange=exchange,
transport='memory',
transport_options={},
transition_timeout=200,
topics=topics,
retry_options={})
expected_calls = [
mock.call.executor_class(uuid=eng.storage.flow_uuid,
url=broker_url,
exchange=exchange,
topics=topics,
transport='memory',
transport_options={},
transition_timeout=200,
retry_options={})
]
self.assertEqual(expected_calls, self.master_mock.mock_calls)
def test_creation_custom_executor(self):
ex = executor.WorkerTaskExecutor('a', 'test-exchange', ['test-topic'])
eng = self._create_engine(executor=ex)
self.assertIs(eng._task_executor, ex)
self.assertIsInstance(eng._task_executor, executor.WorkerTaskExecutor)
def test_creation_invalid_custom_executor(self):
self.assertRaises(TypeError, self._create_engine, executor=2)
self.assertRaises(TypeError, self._create_engine, executor='blah')
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