mistral/mistral/tests/unit/engine/test_subworkflows.py

458 lines
12 KiB
Python

# Copyright 2014 - Mirantis, Inc.
# Copyright 2015 - StackStorm, Inc.
#
# 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 mock
from oslo_config import cfg
from mistral.actions import std_actions
from mistral import context as auth_context
from mistral.db.v2 import api as db_api
from mistral import exceptions as exc
from mistral.services import workbooks as wb_service
from mistral.tests.unit.engine import base
from mistral.workflow import states
# Use the set_default method to set value otherwise in certain test cases
# the change in value is not permanent.
cfg.CONF.set_default('auth_enable', False, group='pecan')
WB1 = """
---
version: '2.0'
name: wb1
workflows:
wf1:
type: reverse
input:
- param1
- param2
output:
final_result: <% $.final_result %>
tasks:
task1:
action: std.echo output=<% $.param1 %>
publish:
result1: <% task(task1).result %>
task2:
action: std.echo output="'<% $.param1 %> & <% $.param2 %>'"
publish:
final_result: <% task(task2).result %>
requires: [task1]
wf2:
type: direct
output:
slogan: <% $.slogan %>
tasks:
task1:
workflow: wf1 param1='Bonnie' param2='Clyde' task_name='task2'
publish:
slogan: "<% task(task1).result.final_result %> is a cool movie!"
"""
WB2 = """
---
version: '2.0'
name: wb2
workflows:
wf1:
type: direct
tasks:
task1:
workflow: wf2
wf2:
type: direct
output:
var1: <% $.does_not_exist %>
tasks:
task1:
action: std.noop
"""
WB3 = """
---
version: '2.0'
name: wb3
workflows:
wf1:
input:
- wf_name
output:
sub_wf_out: <% $.sub_wf_out %>
tasks:
task1:
workflow: <% $.wf_name %>
publish:
sub_wf_out: <% task(task1).result.sub_wf_out %>
wf2:
output:
sub_wf_out: wf2_out
tasks:
task1:
action: std.noop
"""
WB4 = """
---
version: '2.0'
name: wb4
workflows:
wf1:
input:
- wf_name
- inp
output:
sub_wf_out: <% $.sub_wf_out %>
tasks:
task1:
workflow: <% $.wf_name %>
input: <% $.inp %>
publish:
sub_wf_out: <% task(task1).result.sub_wf_out %>
wf2:
input:
- inp
output:
sub_wf_out: <% $.inp %>
tasks:
task1:
action: std.noop
"""
WB5 = """
---
version: '2.0'
name: wb5
workflows:
wf1:
input:
- wf_name
- inp
output:
sub_wf_out: '{{ _.sub_wf_out }}'
tasks:
task1:
workflow: '{{ _.wf_name }}'
input: '{{ _.inp }}'
publish:
sub_wf_out: '{{ task("task1").result.sub_wf_out }}'
wf2:
input:
- inp
output:
sub_wf_out: '{{ _.inp }}'
tasks:
task1:
action: std.noop
"""
WB6 = """
---
version: '2.0'
name: wb6
workflows:
wf1:
tasks:
task1:
workflow: wf2
wf2:
tasks:
task1:
workflow: wf3
wf3:
tasks:
task1:
action: std.noop
"""
class SubworkflowsTest(base.EngineTestCase):
def setUp(self):
super(SubworkflowsTest, self).setUp()
wb_service.create_workbook_v2(WB1)
wb_service.create_workbook_v2(WB2)
wb_service.create_workbook_v2(WB3)
wb_service.create_workbook_v2(WB4)
wb_service.create_workbook_v2(WB5)
wb_service.create_workbook_v2(WB6)
def test_subworkflow_success(self):
wf2_ex = self.engine.start_workflow('wb1.wf2')
project_id = auth_context.ctx().project_id
# Execution of 'wf2'.
self.assertEqual(project_id, wf2_ex.project_id)
self.assertIsNotNone(wf2_ex)
self.assertDictEqual({}, wf2_ex.input)
self.assertDictEqual({'namespace': '', 'env': {}}, wf2_ex.params)
self._await(lambda: len(db_api.get_workflow_executions()) == 2, 0.5, 5)
wf_execs = db_api.get_workflow_executions()
self.assertEqual(2, len(wf_execs))
# Execution of 'wf2'.
wf1_ex = self._assert_single_item(wf_execs, name='wb1.wf1')
wf2_ex = self._assert_single_item(wf_execs, name='wb1.wf2')
self.assertEqual(project_id, wf1_ex.project_id)
self.assertIsNotNone(wf1_ex.task_execution_id)
self.assertDictContainsSubset(
{
'task_name': 'task2',
'task_execution_id': wf1_ex.task_execution_id
},
wf1_ex.params
)
self.assertDictEqual(
{
'param1': 'Bonnie',
'param2': 'Clyde'
},
wf1_ex.input
)
# Wait till workflow 'wf1' is completed.
self.await_workflow_success(wf1_ex.id)
with db_api.transaction():
wf1_ex = db_api.get_workflow_execution(wf1_ex.id)
wf1_output = wf1_ex.output
self.assertDictEqual(
{'final_result': "'Bonnie & Clyde'"},
wf1_output
)
# Wait till workflow 'wf2' is completed.
self.await_workflow_success(wf2_ex.id, timeout=4)
with db_api.transaction():
wf2_ex = db_api.get_workflow_execution(wf2_ex.id)
wf2_output = wf2_ex.output
self.assertDictEqual(
{'slogan': "'Bonnie & Clyde' is a cool movie!"},
wf2_output
)
# Check project_id in tasks.
wf1_task_execs = db_api.get_task_executions(
workflow_execution_id=wf1_ex.id
)
wf2_task_execs = db_api.get_task_executions(
workflow_execution_id=wf2_ex.id
)
wf2_task1_ex = self._assert_single_item(wf1_task_execs, name='task1')
wf1_task1_ex = self._assert_single_item(wf2_task_execs, name='task1')
wf1_task2_ex = self._assert_single_item(wf1_task_execs, name='task2')
self.assertEqual(project_id, wf2_task1_ex.project_id)
self.assertEqual(project_id, wf1_task1_ex.project_id)
self.assertEqual(project_id, wf1_task2_ex.project_id)
@mock.patch.object(std_actions.EchoAction, 'run',
mock.MagicMock(side_effect=exc.ActionException))
def test_subworkflow_error(self):
self.engine.start_workflow('wb1.wf2')
self._await(lambda: len(db_api.get_workflow_executions()) == 2, 0.5, 5)
wf_execs = db_api.get_workflow_executions()
self.assertEqual(2, len(wf_execs))
wf1_ex = self._assert_single_item(wf_execs, name='wb1.wf1')
wf2_ex = self._assert_single_item(wf_execs, name='wb1.wf2')
# Wait till workflow 'wf1' is completed.
self.await_workflow_error(wf1_ex.id)
# Wait till workflow 'wf2' is completed, its state must be ERROR.
self.await_workflow_error(wf2_ex.id)
def test_subworkflow_yaql_error(self):
wf_ex = self.engine.start_workflow('wb2.wf1')
self.await_workflow_error(wf_ex.id)
wf_execs = db_api.get_workflow_executions()
self.assertEqual(2, len(wf_execs))
wf2_ex = self._assert_single_item(wf_execs, name='wb2.wf2')
self.assertEqual(states.ERROR, wf2_ex.state)
self.assertIn('Can not evaluate YAQL expression', wf2_ex.state_info)
# Ensure error message is bubbled up to the main workflow.
wf1_ex = self._assert_single_item(wf_execs, name='wb2.wf1')
self.assertEqual(states.ERROR, wf1_ex.state)
self.assertIn('Can not evaluate YAQL expression', wf1_ex.state_info)
def test_subworkflow_environment_inheritance(self):
env = {'key1': 'abc'}
wf2_ex = self.engine.start_workflow('wb1.wf2', env=env)
# Execution of 'wf2'.
self.assertIsNotNone(wf2_ex)
self.assertDictEqual({}, wf2_ex.input)
self.assertDictEqual(
{'env': env, 'namespace': ''},
wf2_ex.params
)
self._await(lambda: len(db_api.get_workflow_executions()) == 2, 0.5, 5)
wf_execs = db_api.get_workflow_executions()
self.assertEqual(2, len(wf_execs))
# Execution of 'wf1'.
wf1_ex = self._assert_single_item(wf_execs, name='wb1.wf1')
wf2_ex = self._assert_single_item(wf_execs, name='wb1.wf2')
self.assertIsNotNone(wf1_ex.task_execution_id)
self.assertDictContainsSubset({}, wf1_ex.params)
# Wait till workflow 'wf1' is completed.
self.await_workflow_success(wf1_ex.id)
# Wait till workflow 'wf2' is completed.
self.await_workflow_success(wf2_ex.id)
def test_dynamic_subworkflow_wf2(self):
ex = self.engine.start_workflow('wb3.wf1', wf_input={'wf_name': 'wf2'})
self.await_workflow_success(ex.id)
with db_api.transaction():
ex = db_api.get_workflow_execution(ex.id)
self.assertEqual({'sub_wf_out': 'wf2_out'}, ex.output)
def test_dynamic_subworkflow_call_failure(self):
ex = self.engine.start_workflow(
'wb3.wf1',
wf_input={'wf_name': 'not_existing_wf'}
)
self.await_workflow_error(ex.id)
with db_api.transaction():
ex = db_api.get_workflow_execution(ex.id)
self.assertIn('not_existing_wf', ex.state_info)
def test_dynamic_subworkflow_with_generic_input(self):
self._test_dynamic_workflow_with_dict_param('wb4.wf1')
def test_dynamic_subworkflow_with_jinja(self):
self._test_dynamic_workflow_with_dict_param('wb5.wf1')
def test_string_workflow_input_failure(self):
ex = self.engine.start_workflow(
'wb4.wf1',
wf_input={'wf_name': 'wf2', 'inp': 'invalid_string_input'}
)
self.await_workflow_error(ex.id)
with db_api.transaction():
ex = db_api.get_workflow_execution(ex.id)
self.assertIn('invalid_string_input', ex.state_info)
def _test_dynamic_workflow_with_dict_param(self, wf_identifier):
ex = self.engine.start_workflow(
wf_identifier,
wf_input={'wf_name': 'wf2', 'inp': {'inp': 'abc'}}
)
self.await_workflow_success(ex.id)
with db_api.transaction():
ex = db_api.get_workflow_execution(ex.id)
self.assertEqual({'sub_wf_out': 'abc'}, ex.output)
def test_subworkflow_root_execution_id(self):
self.engine.start_workflow('wb6.wf1')
self._await(lambda: len(db_api.get_workflow_executions()) == 3, 0.5, 5)
wf_execs = db_api.get_workflow_executions()
wf1_ex = self._assert_single_item(wf_execs, name='wb6.wf1')
wf2_ex = self._assert_single_item(wf_execs, name='wb6.wf2')
wf3_ex = self._assert_single_item(wf_execs, name='wb6.wf3')
self.assertEqual(3, len(wf_execs))
# Wait till workflow 'wf1' is completed (and all the sub-workflows
# will be completed also).
self.await_workflow_success(wf1_ex.id)
with db_api.transaction():
wf1_ex = db_api.get_workflow_execution(wf1_ex.id)
wf2_ex = db_api.get_workflow_execution(wf2_ex.id)
wf3_ex = db_api.get_workflow_execution(wf3_ex.id)
self.assertIsNone(wf1_ex.root_execution_id, None)
self.assertEqual(wf2_ex.root_execution_id, wf1_ex.id)
self.assertEqual(wf3_ex.root_execution_id, wf1_ex.id)