347 lines
9.0 KiB
Python
347 lines
9.0 KiB
Python
# Copyright 2014 - Mirantis, Inc.
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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 mock
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from oslo.config import cfg
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from oslo_log import log as logging
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from mistral.db.v2 import api as db_api
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from mistral.engine import default_engine as de
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from mistral import exceptions as exc
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from mistral.services import workflows as wf_service
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from mistral.tests.unit.engine import base
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from mistral.workflow import states
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LOG = logging.getLogger(__name__)
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# Use the set_default method to set value otherwise in certain test cases
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# the change in value is not permanent.
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cfg.CONF.set_default('auth_enable', False, group='pecan')
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class DirectWorkflowEngineTest(base.EngineTestCase):
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def _run_workflow(self, workflow_yaml):
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wf_service.create_workflows(workflow_yaml)
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wf_ex = self.engine.start_workflow('wf', {})
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self._await(lambda: self.is_execution_error(wf_ex.id))
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return db_api.get_workflow_execution(wf_ex.id)
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def test_direct_workflow_on_closures(self):
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wf_text = """
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version: '2.0'
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wf:
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# type: direct - 'direct' is default
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tasks:
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task1:
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description: |
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Explicit 'fail' command should lead to workflow failure.
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action: std.echo output="Echo"
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on-success:
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- task2
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- succeed
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on-complete:
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- task3
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- task4
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- fail
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- never_gets_here
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task2:
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action: std.noop
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task3:
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action: std.noop
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task4:
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action: std.noop
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never_gets_here:
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action: std.noop
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"""
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wf_ex = self._run_workflow(wf_text)
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tasks = wf_ex.task_executions
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task1 = self._assert_single_item(tasks, name='task1')
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task3 = self._assert_single_item(tasks, name='task3')
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task4 = self._assert_single_item(tasks, name='task4')
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self.assertEqual(3, len(tasks))
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self._await(lambda: self.is_task_success(task1.id))
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self._await(lambda: self.is_task_success(task3.id))
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self._await(lambda: self.is_task_success(task4.id))
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self.assertTrue(wf_ex.state, states.ERROR)
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def test_direct_workflow_change_state_after_success(self):
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wf_text = """
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version: '2.0'
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wf:
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tasks:
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task1:
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action: std.echo output="Echo"
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on-success:
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- task2
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task2:
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action: std.noop
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"""
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wf_service.create_workflows(wf_text)
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wf_ex = self.engine.start_workflow('wf', {})
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self._await(lambda: self.is_execution_success(wf_ex.id))
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self.assertEqual(
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states.SUCCESS,
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self.engine.resume_workflow(wf_ex.id).state
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)
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self.assertRaises(
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exc.WorkflowException,
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self.engine.pause_workflow, wf_ex.id
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)
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self.assertEqual(
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states.SUCCESS,
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self.engine.stop_workflow(wf_ex.id, states.ERROR).state
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)
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def test_wrong_task_input(self):
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wf_text = """
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version: '2.0'
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wf:
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type: direct
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tasks:
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task1:
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action: std.echo output="Echo"
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on-complete:
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- task2
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task2:
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description: Wrong task output should lead to workflow failure
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action: std.echo wrong_input="Hahaha"
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"""
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wf_ex = self._run_workflow(wf_text)
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task_ex = self._assert_single_item(wf_ex.task_executions, name='task2')
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action_ex = db_api.get_action_executions(
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task_execution_id=task_ex.id
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)[0]
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self.assertIn(
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'Failed to initialize action',
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action_ex.output['result']
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)
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self.assertIn(
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'unexpected keyword argument',
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action_ex.output['result']
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)
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self.assertTrue(wf_ex.state, states.ERROR)
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self.assertIn(action_ex.output['result'], wf_ex.state_info)
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def test_wrong_first_task_input(self):
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wf_text = """
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version: '2.0'
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wf:
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type: direct
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tasks:
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task1:
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action: std.echo wrong_input="Ha-ha"
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"""
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wf_ex = self._run_workflow(wf_text)
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task_ex = wf_ex.task_executions[0]
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action_ex = db_api.get_action_executions(
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task_execution_id=task_ex.id
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)[0]
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self.assertIn(
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"Failed to initialize action",
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action_ex.output['result']
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)
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self.assertIn(
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"unexpected keyword argument",
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action_ex.output['result']
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)
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self.assertTrue(wf_ex.state, states.ERROR)
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self.assertIn(action_ex.output['result'], wf_ex.state_info)
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def test_wrong_action(self):
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wf_text = """
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version: '2.0'
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wf:
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type: direct
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tasks:
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task1:
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action: std.echo output="Echo"
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on-complete:
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- task2
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task2:
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action: action.doesnt_exist
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"""
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wf_ex = self._run_workflow(wf_text)
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# TODO(dzimine): Catch tasks caused error, and set them to ERROR:
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# TODO(dzimine): self.assertTrue(task_ex.state, states.ERROR)
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self.assertTrue(wf_ex.state, states.ERROR)
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self.assertIn("Failed to find action", wf_ex.state_info)
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def test_wrong_action_first_task(self):
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wf_text = """
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version: '2.0'
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wf:
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type: direct
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tasks:
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task1:
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action: wrong.task
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"""
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wf_service.create_workflows(wf_text)
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with mock.patch.object(de.DefaultEngine, '_fail_workflow') as mock_fw:
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self.assertRaises(
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exc.InvalidActionException,
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self.engine.start_workflow, 'wf', None)
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mock_fw.assert_called_once()
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self.assertTrue(
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issubclass(
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type(mock_fw.call_args[0][1]),
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exc.InvalidActionException
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),
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"Called with a right exception"
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)
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def test_messed_yaql(self):
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wf_text = """
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version: '2.0'
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wf:
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type: direct
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tasks:
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task1:
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action: std.echo output="Echo"
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on-complete:
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- task2
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task2:
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action: std.echo output=<% wrong(yaql) %>
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"""
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wf_ex = self._run_workflow(wf_text)
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self.assertTrue(wf_ex.state, states.ERROR)
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def test_messed_yaql_in_first_task(self):
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wf_text = """
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version: '2.0'
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wf:
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type: direct
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tasks:
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task1:
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action: std.echo output=<% wrong(yaql) %>
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"""
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wf_service.create_workflows(wf_text)
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with mock.patch.object(de.DefaultEngine, '_fail_workflow') as mock_fw:
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self.assertRaises(
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exc.YaqlEvaluationException,
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self.engine.start_workflow, 'wf', None
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)
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mock_fw.assert_called_once()
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self.assertTrue(
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issubclass(
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type(mock_fw.call_args[0][1]),
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exc.YaqlEvaluationException
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),
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"Called with a right exception"
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)
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def test_mismatched_yaql_in_first_task(self):
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wf_text = """
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version: '2.0'
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wf:
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input:
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- var
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tasks:
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task1:
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action: std.echo output=<% $.var + $.var2 %>
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"""
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wf_service.create_workflows(wf_text)
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exception = self.assertRaises(
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exc.YaqlEvaluationException,
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self.engine.start_workflow, 'wf', {'var': 2}
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)
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self.assertIn("Can not evaluate YAQL expression", exception.message)
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def test_one_line_syntax_in_on_clauses(self):
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wf_text = """
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version: '2.0'
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wf:
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type: direct
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tasks:
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task1:
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action: std.echo output=1
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on-success: task2
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task2:
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action: std.echo output=1
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on-complete: task3
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task3:
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action: std.fail
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on-error: task4
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task4:
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action: std.echo output=4
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"""
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wf_service.create_workflows(wf_text)
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wf_ex = self.engine.start_workflow('wf', {})
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self._await(lambda: self.is_execution_success(wf_ex.id))
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